Custom Bisimoto Cams
06-27-2013 | 01:35 PM
#283
All motor
Joined: Sep 2008
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From: Long Island
^ Ask them to measure everything before they touch it!!!!!!!!!!!!!!!! So we can finally have some stock J30a4/5 cam specs lol. Hopefully they will use the same units Bisi did as in, .0394" lift, etc, etc.
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IntactACK (06-27-2013)
06-27-2013 | 01:44 PM
#285
I will work my best to get a dyno for some reference.
06-27-2013 | 02:42 PM
#286
my type-s cams are being reground as we speak at Web.
edit: also, I would take Bisi's cam specs that are advertised on the website with a grain of salt. If he posted actual specs, people would just take them and go straight to a grinder. Everything being quoted here from his website is most likely measured with absolutely 0 valve lash, among other things....
Bisi does good work, so what I'm saying is I wouldn't necessarily base a custom cam spec off of advertised numbers - you would be better off working with him directly on a custom cam spec.
Last edited by i_love_cars; 06-27-2013 at 02:46 PM.
06-27-2013 | 04:10 PM
#287
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From: Franklin County Virginia
The guy is suppose to look at the j30a4/5 valve adjustment video to see if that answers all of his questions. I will be sure to keep you guys up to date.
ILC thanks. I will get with them about custom cams.
ILC thanks. I will get with them about custom cams.
06-27-2013 | 06:49 PM
#288
If this works out. I think bisimoto will also drop prices or they will start CNC camshafts instead of regrinding. Anyone can regrind cams to specs. Not everyone can manufacture cams from a piece of billet.
06-27-2013 | 06:59 PM
#289
06-27-2013 | 07:14 PM
#290
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From: Franklin County Virginia
Think you misunderstood another post on v6p that I made about the j37a4 "type s" cams my friend. All cams EXCEPT the newer j37a2/4 cams can be reground. Bottom line. The 07-08 cams are actually the best because of weight savings. But if you're using a stock cam without grinding, RLs are the best.
06-27-2013 | 07:15 PM
#291
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From: Franklin County Virginia
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Sonnick (06-28-2013)
06-27-2013 | 07:37 PM
#293
Think you misunderstood another post on v6p that I made about the j37a4 "type s" cams my friend. All cams EXCEPT the newer j37a2/4 cams can be reground. Bottom line. The 07-08 cams are actually the best because of weight savings. But if you're using a stock cam without grinding, RLs are the best.
06-27-2013 | 07:42 PM
#294
The j37a1 has numerous advantages over previous 3.0, 3.2 and 3.5 engines. The heads feature higher flowing ports of which supposedly contributed to 7hp alone. They also have an improved valve design where they are cut differently as well as made from a much lighter material while keeping stem diameter the same and they are 36mm intakes. Even the cams are different. They, like the 07-08 TL-S cams, are hollow but they cannot be reground because they are simply lives pressed onto a splined shaft...not a solid casting. The valve covers and intake manifold are extremely light due to being made out of magnesium.
If anyone is wanting to do a 3.6 or 3.7, try and use at least the rods and pistons from a 2010 and up MDX because they have heavy duty rods and forged aluminum pistons...as do the 09 and up TL 3.7. The 07-09 MDX does have a forged crank also BUT the 10 and up made from a much stronger metal and forged differently. The forged aluminum pistons will raise compression from the prior part numbers by approx 2/10ths of a point. Oh, the piston rings in the later 3.7 use a special two piece oil ring and IM ASSUMING because of higher CR, maybe a stronger top ring as well(?).
If anyone is wanting to do a 3.6 or 3.7, try and use at least the rods and pistons from a 2010 and up MDX because they have heavy duty rods and forged aluminum pistons...as do the 09 and up TL 3.7. The 07-09 MDX does have a forged crank also BUT the 10 and up made from a much stronger metal and forged differently. The forged aluminum pistons will raise compression from the prior part numbers by approx 2/10ths of a point. Oh, the piston rings in the later 3.7 use a special two piece oil ring and IM ASSUMING because of higher CR, maybe a stronger top ring as well(?).
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IntactACK (06-28-2013)
06-28-2013 | 12:07 AM
#297
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wait a minute now....am super confused now...
J32A3 are the base cams (2004-2008 TL)....these can be used, but are heavy
J35A8 used in 2007-2008 TL Type S and 2005-2008 RL...can these be used since they are hollow?
J35Z6 in 2009+ TL (Base)...can these be used or not? why?
J37A2 in 2009-2012 RL, can these be used or not? why?
J37A4 in 2009+ TL SHAWD, can these be used or not? why?
J32A3 are the base cams (2004-2008 TL)....these can be used, but are heavy
J35A8 used in 2007-2008 TL Type S and 2005-2008 RL...can these be used since they are hollow?
J35Z6 in 2009+ TL (Base)...can these be used or not? why?
J37A2 in 2009-2012 RL, can these be used or not? why?
J37A4 in 2009+ TL SHAWD, can these be used or not? why?
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jauman (11-27-2013)
06-28-2013 | 07:36 AM
#298
ONLY the newer cams from the j37a2 and the J37a4 (as well as ANY J35zX) engine CANNOT be used with our motors. The reason they cannot be used is because they simply do not work with our heads.
*For those wanting a further explanation, please read further*
There are several reasons we cannot use the j37a2 or the j37a4 cams with previous j-series engines such as the j32a3, j32a2, j35a8, j30a4, etc...
Reason 1: The cam journals do NOT align with the bearing journals on the heads. They are spaced much differently.
Reason 2: There are only 4 lobes per cylinder due to the new rocker arm design. Our engines have 5 lobes per cylinder.
Aside from being non-interchangeable with our cams they're new design prevents them from being receiving any sort of regrind services...at least this is what I was told by one specific company that offers this service.
Here's a picture to compare a J37a2 cam (left) and a J32a3 cam (right).
*For those wanting a further explanation, please read further*
There are several reasons we cannot use the j37a2 or the j37a4 cams with previous j-series engines such as the j32a3, j32a2, j35a8, j30a4, etc...
Reason 1: The cam journals do NOT align with the bearing journals on the heads. They are spaced much differently.
Reason 2: There are only 4 lobes per cylinder due to the new rocker arm design. Our engines have 5 lobes per cylinder.
Aside from being non-interchangeable with our cams they're new design prevents them from being receiving any sort of regrind services...at least this is what I was told by one specific company that offers this service.
Here's a picture to compare a J37a2 cam (left) and a J32a3 cam (right).
Last edited by yungone501; 06-28-2013 at 07:38 AM.
06-28-2013 | 07:51 AM
#299
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Joined: Sep 2008
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From: Long Island
^ Wonderful explanation. If Type S cams were given to me as a gift (because I'm awesome), I would so do it. However, I'm not planning to spend $450 on the cams alone just to get them reground. Although, if Delta does it for like $200 total, that's not such a bad deal.
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Sonnick (06-28-2013)
06-28-2013 | 10:34 AM
#304
Out of the j35a8 cams, the RL cams are the best performing but the TL-S cams are the lightest...IMO, a lighter cam makes no difference in regards to power production. The lobe specs of the RL justify its use over the TL-S.
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jauman (11-27-2013)
06-28-2013 | 10:51 AM
#305
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Joined: Oct 2012
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From: Franklin County Virginia
Bisi charges 722 for regrinds so 450 would still be a hell of a deal. I'mhoping they wwon't charge over 300 for both. 400 is the absolute highest I'd want to see. The guy from delta is suppose to be looking into all of this today and get back to me about information he may need. Compression liter engine bore stroke etc etc etc.
06-28-2013 | 11:08 AM
#307
06-28-2013 | 11:09 AM
#308
I think the slight difference in weight would be very nominal in terms of overall output.
What is the difference btw? 1lb or less. Got it.
What is the difference btw? 1lb or less. Got it.
Last edited by maharajamd; 06-28-2013 at 11:11 AM.
06-28-2013 | 11:10 AM
#309
It would yes. It would rev up faster in neutral and that's about the only place you would actually feel any difference I assure you. When a load is physically applied to the engine (such as the vehicle being in gear and in motion) you won't be able to feel the difference of the rotational weight being reduced...but I'm not saying it doesn't technically add gains. Just nothing to justify it over the RL cams as I've said.
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swoosh (06-28-2013)
06-28-2013 | 02:20 PM
#313
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shuddup Robert 
well, I know what you mean....I wasnt expecting it to get me to 60 quicker, but I was just hoping it would prove just as beneficial as changing out the crank pulley for a lighter one, or changing out other accessory pulleys....
well, I know what you mean....I wasnt expecting it to get me to 60 quicker, but I was just hoping it would prove just as beneficial as changing out the crank pulley for a lighter one, or changing out other accessory pulleys....
06-28-2013 | 03:00 PM
#314
Are we literally talking the difference between a hollow cam vs a solid? Or are the cams made of a different material all together (billet, chilled cast, etc)? Or does one or another have smaller diameter?
I mean we can discuss theoretical physics here but it's not anywhere close to the same thing as reducing weight at the fly or at the wheels.
2 lbs literally could translate to less then 1HP (hell .5HP), ie not a dyno-able difference in powah.
Weight savings really should not have any impact in choosing a cam. IMO.
Anyone care to actually weight these and do some measurements?
Edit: Unless you literally are only caring about how fast you can "rev" your car. Which will still be negligible depending on how depending on how my first 3 questions get answered. No?
I mean we can discuss theoretical physics here but it's not anywhere close to the same thing as reducing weight at the fly or at the wheels.
2 lbs literally could translate to less then 1HP (hell .5HP), ie not a dyno-able difference in powah.
Weight savings really should not have any impact in choosing a cam. IMO.
Anyone care to actually weight these and do some measurements?
Edit: Unless you literally are only caring about how fast you can "rev" your car. Which will still be negligible depending on how depending on how my first 3 questions get answered. No?
Last edited by maharajamd; 06-28-2013 at 03:14 PM.
06-28-2013 | 03:27 PM
#316
In fact, Webcams actually grinds away 100 thou from the base circle for our cams because there isn't enough room to the head casting to weld on any material, so they circumvent having to add to the lobe cuz you won't need as much lift.
They can get away with this because we have a roller cam so there's less risk in taking material off of the base circle.
also because of the roller we don't have to worry much about rocker wear.
As a final touch, Webcams will actually send your cams out to Honda for re-hardening after they grind away 100 thou on the base circle, so that you retain the durability of the cam as it was in stock form.
That's why it also takes usually an extra week if you ship your cams off to Web for a re-grind
..........as I am finding out now lol 
06-28-2013 | 03:31 PM
#318
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Joined: Oct 2012
Posts: 677
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From: Franklin County Virginia
Honda cams are steel. Doesn't matter if it's type-s or not. That's why they make sure durable regrind candidates because they won't break.
In fact, Webcams actually grinds away 100 thou from the base circle for our cams because there isn't enough room to the head casting to weld on any material, so they circumvent having to add to the lobe cuz you won't need as much lift.
They can get away with this because we have a roller cam so there's less risk in taking material off of the base circle.
also because of the roller we don't have to worry much about rocker wear.
As a final touch, Webcams will actually send your cams out to Honda for re-hardening after they grind away 100 thou on the base circle, so that you retain the durability of the cam as it was in stock form.
That's why it also takes usually an extra week if you ship your cams off to Web for a re-grind ..........as I am finding out now lol
In fact, Webcams actually grinds away 100 thou from the base circle for our cams because there isn't enough room to the head casting to weld on any material, so they circumvent having to add to the lobe cuz you won't need as much lift.
They can get away with this because we have a roller cam so there's less risk in taking material off of the base circle.
also because of the roller we don't have to worry much about rocker wear.
As a final touch, Webcams will actually send your cams out to Honda for re-hardening after they grind away 100 thou on the base circle, so that you retain the durability of the cam as it was in stock form.
That's why it also takes usually an extra week if you ship your cams off to Web for a re-grind
..........as I am finding out now lol
06-28-2013 | 04:01 PM
#320