high compression
07-09-2007, 07:03 PM
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high compression
well i was looking at all the specs on the 3g tl specs compared to our cl type s specs and along with the 10hp/6tq increase in power i noticed that they also have an increase in compression(11.0:1) which is probably where they found that extra 10hp. so i was wondering if anybody knew the thickness of the honda v6 headgaskets. and which ones fit our type-s heads , as i am looking for higer compression
07-10-2007, 07:19 AM
#6
to achieve higher compression without changing too much internals (i.e. leaving the motor at 3.2L), you will have to contact JE or someone else who makes pistons. search around, there's 1 or 2 companies that already have our piston specs, so you can get a custom piston w/ high compression.
07-10-2007, 10:30 AM
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Originally Posted by CleanCL
you won't achieve higher compression from just the head gaskets.
While theoretically you could install thinner head gaskets to increase the compression ratio I don't think it's possible with our motors. The head gaskets are only 1mm thick to begin with.
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07-10-2007, 11:56 AM
#9
You can get an Odyssey Crank and Rods and then use RL pistons to achieve the 11.0:1 ratio and if I'm not mistaken still use the J32A2 Block. thats what I'll be doing myself on my motor rebuild
07-10-2007, 01:41 PM
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Originally Posted by JBlueCLS6
You can get an Odyssey Crank and Rods and then use RL pistons to achieve the 11.0:1 ratio and if I'm not mistaken still use the J32A2 Block. thats what I'll be doing myself on my motor rebuild
You don't need a new crank or rods to increase compression. Multiple piston manufactures have our specs and can make a set of pistons to your desired compression for less than purchasing the Honda crank, rods, and pistons. The crank and rods are required to increase displacement.
07-10-2007, 02:51 PM
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Originally Posted by mrsteve
You don't need a new crank or rods to increase compression. Multiple piston manufactures have our specs and can make a set of pistons to your desired compression for less than purchasing the Honda crank, rods, and pistons. The crank and rods are required to increase displacement.
07-10-2007, 02:52 PM
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Originally Posted by CleanCL
i would love to see a high compression J series. i was thinking about doing it myself, but due to time constraints custom pistons were not an option.
07-10-2007, 06:16 PM
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Originally Posted by CleanCL
JE, and also some guy w/ a TL-S who was doing a turbo def got pistons, actually i believe he was selling them, but i'm not sure if they were from JE.
3.5L, 12.0:1, and 8,000 rpm redline and lots of fuel... hmm
3.5L, 12.0:1, and 8,000 rpm redline and lots of fuel... hmm
8,000 rpm is gonna require a reworked valvetrain and a standalone. No getting around the ECU's redline with a piggy-back.
07-10-2007, 06:40 PM
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Originally Posted by poisx7
would u need new fuel demands "ECU" for that ??.
that might be very interesting if all that is needed is new pistons,
that might be very interesting if all that is needed is new pistons,
07-10-2007, 10:40 PM
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Originally Posted by CleanCL
e-manage ultimate can extend redline.. ok so maybe not 8,000.. how about 7500?
Can it extend redline successfully on the J32A2? The e-manage is supposed to do lots of things and it doesn't do many very well on our car.
And a bump to 7,500 wouldn't really make that much of a difference in power do you think? 300rpm?
07-11-2007, 07:31 AM
#22
Originally Posted by mrsteve
Can it extend redline successfully on the J32A2? The e-manage is supposed to do lots of things and it doesn't do many very well on our car.
And a bump to 7,500 wouldn't really make that much of a difference in power do you think? 300rpm?
And a bump to 7,500 wouldn't really make that much of a difference in power do you think? 300rpm?
07-11-2007, 08:41 AM
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Originally Posted by mrsteve
Pretty sure JE has the specs. ThinJim would know.
07-11-2007, 01:48 PM
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Originally Posted by CleanCL
its capable of doing it, but not sure on the J. i thought the official publish redline from acura was 6900. i always thought it revved a little higher to around 7200, but i figured that was generic tach error.
07-12-2007, 09:04 AM
#26
Again back to reality, is it worth it, the gain in HP, the labour and the $$$$ spent to get there. Are they not well sort out cheaper sources and means. i think it comes to a point when u just say Ok thats it unless one is making a statement.
The truth is our cars aint that Mod friendly to start with. So the more the challenege, hype and $$
The truth is our cars aint that Mod friendly to start with. So the more the challenege, hype and $$
07-12-2007, 02:57 PM
#29
to make it worthwhile the 3.5 stroker should be done...
if i could do it all over again, i would heat treat the 3.5 crank and rods, get 12.0:1 compression pistons and heat treat them, heat treating is cheaper than installing oil squirters and you will surely need to keep cylinder temps down, hone the cylinders, increase oil pathways and may need to dip connecting bolts and rod/crank bearings (i would), port the exhaust on the head, dip the cams, port/polish the intake manifolds and throttle body, i'm not sure how much more you can push the cams out with such a high compression piston, if you get nice big reliefs then you can def do cams, eliminate EGR, filter off the valve cover hose, make sure your injectors and FPR is solid, may need to upgrade to 1:1 FPR depending on how much you push the cams out to achieve a better idle, but as long as you have a emanage to tune it shouldnt matter much, i would use a walbro fuel pump over the OEM pump, w/ a good tune, i'd say you are in the ball park of 300whp N/A, but probably close to $7,500 in the hole, and possibly closing in on 10k
if i could do it all over again, i would heat treat the 3.5 crank and rods, get 12.0:1 compression pistons and heat treat them, heat treating is cheaper than installing oil squirters and you will surely need to keep cylinder temps down, hone the cylinders, increase oil pathways and may need to dip connecting bolts and rod/crank bearings (i would), port the exhaust on the head, dip the cams, port/polish the intake manifolds and throttle body, i'm not sure how much more you can push the cams out with such a high compression piston, if you get nice big reliefs then you can def do cams, eliminate EGR, filter off the valve cover hose, make sure your injectors and FPR is solid, may need to upgrade to 1:1 FPR depending on how much you push the cams out to achieve a better idle, but as long as you have a emanage to tune it shouldnt matter much, i would use a walbro fuel pump over the OEM pump, w/ a good tune, i'd say you are in the ball park of 300whp N/A, but probably close to $7,500 in the hole, and possibly closing in on 10k
07-12-2007, 03:02 PM
#30
oh and while i'm dreaming, i would run an icebox intake if ITBs can't be fitted and comptech headers but ditch the j-pipe and run true dual exhaust all the way to the rear, or maybe just do side exits to eliminate weight, it depends on how much back pressure is needed.
07-12-2007, 03:02 PM
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i think the type s cams like high compression. with a bump up to 11 or 11.5:1 you'd probably see a difference. i dont know how similar the 3g tl motor is to ours. but im guessing thats where they got that extra 10hp/6trq over our motor.
07-12-2007, 03:05 PM
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Originally Posted by sinfulj32
i think the type s cams like high compression. with a bump up to 11 or 11.5:1 you'd probably see a difference. i dont know how similar the 3g tl motor is to ours. but im guessing thats where they got that extra 10hp/6trq over our motor.
07-12-2007, 03:08 PM
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Originally Posted by CleanCL
oh and while i'm dreaming, i would run an icebox intake if ITBs can't be fitted and comptech headers but ditch the j-pipe and run true dual exhaust all the way to the rear, or maybe just do side exits to eliminate weight, it depends on how much back pressure is needed.
07-12-2007, 03:38 PM
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07-12-2007, 03:43 PM
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Originally Posted by mrsteve
Less restrictive air intake and higher compression
are you guys sure theres no other way to just bump up the compression on our motors other than pistons?
07-14-2007, 10:21 AM
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Originally Posted by sinfulj32
there you go. the tl has around a 20hp gain on power over us just from less resrictive intake and higher compression. that compression bump to 11.5:1 sounds mighty good right now. are you guys sure theres no other way to just bump up the compression on our motors other than pistons?
are you guys sure theres no other way to just bump up the compression on our motors other than pistons?There's pretty much no other way possible. It's not as if we have a knob that we can spin on the side of the block to increase or decrease compression ratio
