Custom Bisimoto Cams
#241
takin care of Business in
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Man...the "lost some low end" made me lose my damn woodie !!!
how bad was the low end loss? I wish you had dyno's before and after....can you still get a dyno done? I think I can still compare it to either Sonnick's or Justin's to get an idea of how much low end was lost...
on a different subject, you will be able to gain some back with a pnp job on the heads and if you raise the CR
I am thinking of raising the CR by 2 points (0.5 being 1 point)....I am thinking of going to 12:1 since I want to be able to run 91/93 octane....guessing this will boost some torque
how bad was the low end loss? I wish you had dyno's before and after....can you still get a dyno done? I think I can still compare it to either Sonnick's or Justin's to get an idea of how much low end was lost...
on a different subject, you will be able to gain some back with a pnp job on the heads and if you raise the CR
I am thinking of raising the CR by 2 points (0.5 being 1 point)....I am thinking of going to 12:1 since I want to be able to run 91/93 octane....guessing this will boost some torque
#242
Burning Brakes
One of the most stand up guys I've met, that I've never hung out with lol. I bullshit with him on a daily basis and he always is willing to help me when I'm a Noob. I took 95% of his information trusting him when installing the cams, its just been a tough few months that guys I was lucky enough to install cams and do all the work I did considering I'm in the process of buying this house. 35 grand out of pocket makes modding a daily driver pretty unjustifiable to a woman lol....and to add she is better than most, her father owned a body/mechanics shop so she grew up with it. Give me some time to give some more valuable information. I regret not going out of the way to dyno before hand. I can say my car "feels" like it has a hell of a lot more power, yes I lost some low end power. I've been modding cars since I was 15 done all my own work and raced auto cross to drag racing to on a professional track at Watkins glen. I can also give an assumption and attest to my experience and say that I've gained a lot of power and its more so between 3.5k-4k to 6.5k redline ish.
I can also say that the track conditions were almost the worst I've ever seen but I wasn't not going to reveal my times because everyone was throwing ahhissy fit. I can tell you my 1/8 times should be much lower resulting in obviously a faster time. No one could launch well, it was super hot, Hugh humidity, I'm going to go to a good track where they also hold night runs providing me with colder denser air and I'm going to bring both sets of wheels and do separate runs on the same evening. Give me time guys or try yourself that's the fun in it.....I tore apart my drivers side CV joint lol the womanwoman wasnt loving that when I came home on a flatbed
I can also say that the track conditions were almost the worst I've ever seen but I wasn't not going to reveal my times because everyone was throwing ahhissy fit. I can tell you my 1/8 times should be much lower resulting in obviously a faster time. No one could launch well, it was super hot, Hugh humidity, I'm going to go to a good track where they also hold night runs providing me with colder denser air and I'm going to bring both sets of wheels and do separate runs on the same evening. Give me time guys or try yourself that's the fun in it.....I tore apart my drivers side CV joint lol the womanwoman wasnt loving that when I came home on a flatbed
But I'm more concern on your timing. I live where the track is 1,100 above sea level so if were to run in California where it's under 100 above sea level, I could well be just as fast as the pro's stock by pulling .2 off my time.
#243
All motor
Intack: What track was it? And don't take offense to this, but 98mph, even in 2500ft DA is nothing spectacular. When corrected, that's 101. Maybe it's just a slow track, I don't know. I know Island Drag would be a far drive for you coming from near Albany, but check it out online. It's a great track. I was consistently going 103.5 - 103.9 in 1350ft DA before my 4" CAI.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
#244
Burning Brakes
iTrader: (1)
Intact - just to reinforce, nobody is trying to shit on your times - I think everyone here came in and saw the weather conditions from your track run, and the fact you were running 19's, and we all asserted that the car is in fact capable of being in the 13's.
also nobody attacking you for not having a dyno - just wishing we had one before cams because it adds more information to the pot once you get the after-dyno.
swoosh - nobody is shitting on the thread with speculation - just trying to keep expectations realistic.
I've got plenty of hard information coming. My car is apart right now, actually. I fronted Gerzand 3200 bucks for his j32a3 heads and intake runners 5 months ago - now that his new project has started coming to fruition, I finally got his heads in the mail. I have had them flow benched, I also have my stock type-s heads being flow benched today, I've got the rocker ratios measured, I have stock type-s cam measurements because I paid for a 2nd set of cams to be sent off to Hondata to measure (purely in the interest of bringing more information into the community, mind you), and once I see flow charts of Gerzand's j32 heads next to the j35, I'll be making a determination of whether I'll use his heads or port and do some minor decking on my j35 heads. Custom cam spec will be forthcoming regardless.
I have a shitload of information coming, I've already put thousands and thousands of dollars into this project, but it takes time. Hopefully in the next couple weeks I'll be able to get cams back from Web (not working with Bisimoto, going straight to the grinder).
Trust me, there will be plenty of info about cams and heads. I fully expect more good information to come from your build as well.
In the meantime, I see no problem with all of us discussing cams and heads in this thread, with moderate speculation to keep interest alive as more of us complete our builds.
also nobody attacking you for not having a dyno - just wishing we had one before cams because it adds more information to the pot once you get the after-dyno.
swoosh - nobody is shitting on the thread with speculation - just trying to keep expectations realistic.
I've got plenty of hard information coming. My car is apart right now, actually. I fronted Gerzand 3200 bucks for his j32a3 heads and intake runners 5 months ago - now that his new project has started coming to fruition, I finally got his heads in the mail. I have had them flow benched, I also have my stock type-s heads being flow benched today, I've got the rocker ratios measured, I have stock type-s cam measurements because I paid for a 2nd set of cams to be sent off to Hondata to measure (purely in the interest of bringing more information into the community, mind you), and once I see flow charts of Gerzand's j32 heads next to the j35, I'll be making a determination of whether I'll use his heads or port and do some minor decking on my j35 heads. Custom cam spec will be forthcoming regardless.
I have a shitload of information coming, I've already put thousands and thousands of dollars into this project, but it takes time. Hopefully in the next couple weeks I'll be able to get cams back from Web (not working with Bisimoto, going straight to the grinder).
Trust me, there will be plenty of info about cams and heads. I fully expect more good information to come from your build as well.
In the meantime, I see no problem with all of us discussing cams and heads in this thread, with moderate speculation to keep interest alive as more of us complete our builds.
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#245
takin care of Business in
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please post everything in this thread? or PM me the link with the new thread LOL
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IntactACK (06-25-2013)
#247
Suzuka Master
iTrader: (2)
Intack: What track was it? And don't take offense to this, but 98mph, even in 2500ft DA is nothing spectacular. When corrected, that's 101. Maybe it's just a slow track, I don't know. I know Island Drag would be a far drive for you coming from near Albany, but check it out online. It's a great track. I was consistently going 103.5 - 103.9 in 1350ft DA before my 4" CAI.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
New York International Raceway Park. I punched in 14.43 @ 98 MPH at 12:54 PM, 6/22/13 on Dragtimes DA calculator and got this:
Stock and Mildly Modified Naturally Aspirated Engines
13.943 @ 101.498 MPH
DA was 2828, but don't forget he had his brother in the car, so I bet he can go low 13.80's @ 103 in ideal conditions with no passenger, on the same sixty foot. Not too shabby! With a tune, 104 mph is plausible.
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IntactACK (06-25-2013)
#248
Racer
iTrader: (1)
Intack: What track was it? And don't take offense to this, but 98mph, even in 2500ft DA is nothing spectacular. When corrected, that's 101. Maybe it's just a slow track, I don't know. I know Island Drag would be a far drive for you coming from near Albany, but check it out online. It's a great track. I was consistently going 103.5 - 103.9 in 1350ft DA before my 4" CAI.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
Hard work pays off man. Congrats on the house and I hope everything goes well. Totally understandable that a dyno may not be a priority at this point. If you get it, that's great, if not, your house is much more important I swear lol.
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Sonnick (06-25-2013)
#249
Racer
iTrader: (1)
Intact - just to reinforce, nobody is trying to shit on your times - I think everyone here came in and saw the weather conditions from your track run, and the fact you were running 19's, and we all asserted that the car is in fact capable of being in the 13's.
also nobody attacking you for not having a dyno - just wishing we had one before cams because it adds more information to the pot once you get the after-dyno.
swoosh - nobody is shitting on the thread with speculation - just trying to keep expectations realistic.
I've got plenty of hard information coming. My car is apart right now, actually. I fronted Gerzand 3200 bucks for his j32a3 heads and intake runners 5 months ago - now that his new project has started coming to fruition, I finally got his heads in the mail. I have had them flow benched, I also have my stock type-s heads being flow benched today, I've got the rocker ratios measured, I have stock type-s cam measurements because I paid for a 2nd set of cams to be sent off to Hondata to measure (purely in the interest of bringing more information into the community, mind you), and once I see flow charts of Gerzand's j32 heads next to the j35, I'll be making a determination of whether I'll use his heads or port and do some minor decking on my j35 heads. Custom cam spec will be forthcoming regardless.
I have a shitload of information coming, I've already put thousands and thousands of dollars into this project, but it takes time. Hopefully in the next couple weeks I'll be able to get cams back from Web (not working with Bisimoto, going straight to the grinder).
Trust me, there will be plenty of info about cams and heads. I fully expect more good information to come from your build as well.
In the meantime, I see no problem with all of us discussing cams and heads in this thread, with moderate speculation to keep interest alive as more of us complete our builds.
also nobody attacking you for not having a dyno - just wishing we had one before cams because it adds more information to the pot once you get the after-dyno.
swoosh - nobody is shitting on the thread with speculation - just trying to keep expectations realistic.
I've got plenty of hard information coming. My car is apart right now, actually. I fronted Gerzand 3200 bucks for his j32a3 heads and intake runners 5 months ago - now that his new project has started coming to fruition, I finally got his heads in the mail. I have had them flow benched, I also have my stock type-s heads being flow benched today, I've got the rocker ratios measured, I have stock type-s cam measurements because I paid for a 2nd set of cams to be sent off to Hondata to measure (purely in the interest of bringing more information into the community, mind you), and once I see flow charts of Gerzand's j32 heads next to the j35, I'll be making a determination of whether I'll use his heads or port and do some minor decking on my j35 heads. Custom cam spec will be forthcoming regardless.
I have a shitload of information coming, I've already put thousands and thousands of dollars into this project, but it takes time. Hopefully in the next couple weeks I'll be able to get cams back from Web (not working with Bisimoto, going straight to the grinder).
Trust me, there will be plenty of info about cams and heads. I fully expect more good information to come from your build as well.
In the meantime, I see no problem with all of us discussing cams and heads in this thread, with moderate speculation to keep interest alive as more of us complete our builds.
GLAD WERE ALL FRIENDS AGAIN
#251
3.7L Nitrous Breathing CL
iTrader: (7)
With people saying possible 103's that is sounding much better.
98mph in the 1/4 is a dog,and I'm hoping to see that in the 1/8 sooner or later.
Although I've never used a calculator to try to figure a faster time I've always gone by whats on the slip. Since what's on the slip is what it did run.
I could say on a mid day in october with a nice tail wind I could run 118+ but if it's not on paper it's just is not true.
Not trying to keep you down, just trying to separate fact.
fact is you ran 98mph and you say average which has me to believe you ran slower as well.
get your bother on the sideline and run it again.
Only vid I took with the cams I had installed was burning 1st to the end of 2nd when i left off.
The cams did have more power once rpms got up but the loss of low end was not worth keeping them in. At least with out upping compression or using them with some sort of Boost.
http://s899.photobucket.com/user/acu...126d8.mp4.html
98mph in the 1/4 is a dog,and I'm hoping to see that in the 1/8 sooner or later.
Although I've never used a calculator to try to figure a faster time I've always gone by whats on the slip. Since what's on the slip is what it did run.
I could say on a mid day in october with a nice tail wind I could run 118+ but if it's not on paper it's just is not true.
Not trying to keep you down, just trying to separate fact.
fact is you ran 98mph and you say average which has me to believe you ran slower as well.
get your bother on the sideline and run it again.
Only vid I took with the cams I had installed was burning 1st to the end of 2nd when i left off.
The cams did have more power once rpms got up but the loss of low end was not worth keeping them in. At least with out upping compression or using them with some sort of Boost.
http://s899.photobucket.com/user/acu...126d8.mp4.html
#252
Suzuka Master
iTrader: (2)
ESTA drag strip which is considered Sh*t compared to NYIIRP. Like I stated everyone was not having a good day on the track....I'm not worried about it either way. I was launching very well trust me I've dragged for years, guys that pull 1.5 60 times were around 2.0 on this day and track. I will get out again soon! I'm in the process of looking into some headwork myself
#254
Pro
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#256
Pro
#257
takin care of Business in
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hmmm....i need to hit up Julio and Delta...
#259
Suzuka Master
your paying for a middleman
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#261
Pro
#262
Burning Brakes
#263
Pro
I'm expecting a phone call today from them. Hopefully I won't mess their call while at my second job.
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jauman (11-27-2013)
#266
Racer
iTrader: (1)
Yes that is the last thing you want to do....if your are unsure of the install I would recommend having someone who knows what they are doing present, you can't just slap them in. Double check everything, I believe we turned the motor over so each cylinder was tdc and bdc while adjusting and checking them when they were under load and not. Don't qoute me on this for some reason my brain is shot today.
#267
Pro
Here is a previous post on another forum.
"Can regrinding is common in the racing world. And yes, it does involved having a smaller "base circle" profile. Most, if not all, engines have a maximum amount of clearance that limits the max lift available for a given engine. This is usually determined by the size of the cam bearing (typical for cam-in-block arrangements.) To get more lift and duration, the heel is ground closer to the centerline of the camshaft. This becomes the baseline for the closed valve and increases the difference between the closed and max lift points. The slack is take up by either longer pushrods, lifers, or the normal adjustment method for the followers. In high bucks racing, teams may use many experimental shafts that will be reground on the way to a final profile which can be supplied by the manufacturer as a new part once the final specs are determined. Some extreme camshafts are ground from billets with no reliefs between the lobes since the smaller base circle tends to weaken the shaft and allow flexing. I never heard of any cam being welded. I suppose it's possible, but being one of the most highly stessed parts in an engine, and relatively less expensive than most of the other hardware, I don't see why anyone would. Aside from the aformentioned billet steel shafts, most are cast iron, which is VERY difficult to weld properly not to mention pricey in itself.
Hope this was helpful.
Jay"
And for those that don't understand since the bottom of the cam is ground away the rocker is adjusted to reach lower. Which means that when the cam turns to the lobe side it now has more lift, again, because the rocker was adjusted.
Last edited by NvrDwn; 06-26-2013 at 01:00 PM.
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jauman (11-27-2013)
#268
3.7L Nitrous Breathing CL
iTrader: (7)
Their has to be a little to add.
You could go just about as big as the journal size.
The regrinds I had could've had taller lobes no problem and they were just about the same specs of the level 2's.
I believe on the regrinds their was room for 1.5-2mm more.
You could go just about as big as the journal size.
The regrinds I had could've had taller lobes no problem and they were just about the same specs of the level 2's.
I believe on the regrinds their was room for 1.5-2mm more.
#269
Pro
#271
3.7L Nitrous Breathing CL
iTrader: (7)
I did regrinds and had a few different cams in hand and do my own engine work.
I would do cams based off the 08 tls made as big as possible before any grinding how ever they needed to be made.
Hope the regrinds work out for you guys.
If someone can show graphs where the cams don't lose power I would be wanting some too. Again
I just had no luck with slips to back the fail.
#272
Pro
yes I agree but, what I'm saying is there was maybe 2mm less lobe height over 08 tls cams so you can make a higher lift and longer duration cam than whats offered by just regrinding. Obviously you would need different springs to reduce the chance of coil bind and float going more agressive.
I did regrinds and had a few different cams in hand and do my own engine work.
I would do cams based off the 08 tls made as big as possible before any grinding how ever they needed to be made.
Hope the regrinds work out for you guys.
If someone can show graphs where the cams don't lose power I would be wanting some too. Again
I just had no luck with slips to back the fail.
I did regrinds and had a few different cams in hand and do my own engine work.
I would do cams based off the 08 tls made as big as possible before any grinding how ever they needed to be made.
Hope the regrinds work out for you guys.
If someone can show graphs where the cams don't lose power I would be wanting some too. Again
I just had no luck with slips to back the fail.
#273
3.7L Nitrous Breathing CL
iTrader: (7)
people say you can't add lift because if the lobes are bigger than the cam journal it won't slide in the head.
The rocker won't hit anything.You might have do do a little grinding to the head for rotational clearance for the higher lobes but you can see where it's already machined from the factory for clearance.
The only problem I see would be having the correct geometry where the adjuster sits on the valve correctly.
And as long as theirs enough clearance between valve and piston the rest would be only cam timming and tuning
The rocker won't hit anything.You might have do do a little grinding to the head for rotational clearance for the higher lobes but you can see where it's already machined from the factory for clearance.
The only problem I see would be having the correct geometry where the adjuster sits on the valve correctly.
And as long as theirs enough clearance between valve and piston the rest would be only cam timming and tuning
Last edited by richardparker; 06-26-2013 at 05:24 PM.
#274
Pro
people say you can't add lift because if the lobes are bigger than the cam journal it won't slide in the head.
The rocker won't hit anything.You might have do do a little grinding to the head for rotational clearance for the higher lobes but you can see where it's already machined from the factory for clearance.
The only problem I see would be having the correct geometry where the adjuster sits on the valve correctly.
And as long as theirs enough clearance between valve and piston the rest would be only cam timming and tuning
The rocker won't hit anything.You might have do do a little grinding to the head for rotational clearance for the higher lobes but you can see where it's already machined from the factory for clearance.
The only problem I see would be having the correct geometry where the adjuster sits on the valve correctly.
And as long as theirs enough clearance between valve and piston the rest would be only cam timming and tuning
Stage 2 bisi 0.415" valve lift on the intake and 0.423"exh; 255 and 236 deg duration on intake and exhaust at 0.050", respectively.
Stage 1 bisi 0.394" valve lift on the intake and 0.395"exh; 246 and 234 deg duration on intake and exhaust at 0.050", Respectively.
My custom cam 0.415” valve lift on the intake and 0.423”exh; 250 and 235 deg duration on intake and exhaust at 0.050” Respectively.
It's my understanding that the duration is what makes a car high end or low end powered. Here I have given the same lift as stage 2 but shorten the duration to allow for a little less low end loss. Thoughts?
Last edited by NvrDwn; 06-26-2013 at 06:04 PM.
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#275
Burning Brakes
Be nice to have them come in here and do a little chit chat on their regrinds. I hear from other Subies that they weld regrind cams. But will go by what you said.
#277
3.7L Nitrous Breathing CL
iTrader: (7)
Ok I see. So most of the power will come form the duration. The best way to get power without having to do things to your head is to add lift by grinding the bottom of the camshaft and then slightly flatten the top of the lobe for duration. This way it fit's fine, has more lift and duration. I was thinking of making a custom cam with this profile. Those who really understand this let me know what you think..
Stage 2 bisi 0.415" valve lift on the intake and 0.423"exh; 255 and 236 deg duration on intake and exhaust at 0.050", respectively.
Stage 1 bisi 0.394" valve lift on the intake and 0.395"exh; 246 and 234 deg duration on intake and exhaust at 0.050", Respectively.
My custom cam 0.415” valve lift on the intake and 0.423”exh; 250 and 235 deg duration on intake and exhaust at 0.050” Respectively.
It's my understanding that the duration is what makes a car high end or low end powered. Here I have given the same lift as stage 2 but shorten the duration to allow for a little less low end loss. Thoughts?
Stage 2 bisi 0.415" valve lift on the intake and 0.423"exh; 255 and 236 deg duration on intake and exhaust at 0.050", respectively.
Stage 1 bisi 0.394" valve lift on the intake and 0.395"exh; 246 and 234 deg duration on intake and exhaust at 0.050", Respectively.
My custom cam 0.415” valve lift on the intake and 0.423”exh; 250 and 235 deg duration on intake and exhaust at 0.050” Respectively.
It's my understanding that the duration is what makes a car high end or low end powered. Here I have given the same lift as stage 2 but shorten the duration to allow for a little less low end loss. Thoughts?
#278
Pro
Agreed. I don't know if we have the RPM to be able to use that big of duration. Didn't someone say with stage 1's the powerband started dropping off at 6500rpm? The custom grind I showed should be arounf 7k rpm.
#279
takin care of Business in
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NVRDWN !!! you the man !!! let me know how this cam does for it....
are you sending in a Type S core or a Base Core? I might get the same profile down the line as well....
are you sending in a Type S core or a Base Core? I might get the same profile down the line as well....
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jauman (11-27-2013)