For some Lancer EVO8 info, check this link.

http://www.baic.net/forums/showthread.php?threadid=253

the stock head on a b16 can handle 17-18psi and the stock block without a tune will hold 8-9 pounds. a motor i just built it was a b16 with an 18g turbo with je 9:5:1cr pistons and fmu and vafc holds 17 psi daily driving with out mods to the head. just some info my expierience with boost and the b16

Well not to be argumentative... the head and block don't give out after XXXpsi, they flow, and handle power.

The stock B16a* pistons can hold ~300whp, soon thereafter the piston's ringlands will give out, and around 310whp the rods will bend, and then snap under the pressure. Detonation will of course speed up this process.

The stock B16a* head flows very well. Upwards of 350whp. GSR flows slightly better up top. I believe it was about 1.5% or something marginal.

B series motors handle about the same power.

D series give out around 300.

i must disagree with you cronic, not in a sense about your whp figure, but in a sense that your saying at exaclty 300whp and thats not accurate because its not exactly 300whp, some motors have been perfectly tuned and blew up before 300whp and some have handled more and ran fine. too say exactly 300whp is not accurate.

but i believe you in the 300whp number but i like to say, every b series motor should be able to handle around 300whp and i wouldnt push more then 300whp

and also to say the rods will bend at 310whp is also incorrect because you dont know when the rods will bend could be sooner could be later. no 2 motors are build the same so you cant expect them to handle the same power

Re-read my friend. I said around 300. Which is absolutely correct.

cronic not to be argumenative but the b16 i spoke of is my daily driven 17 psi and 355 whp and the stock rods are holding just fine as is my head and your theory that a gsr head flows better that a b16 tell that to the people who make hondas because apparently they dont know that their design is flawed because a b16 is the same head as the b18c5 minus a factory port and polish

The stock B16a pistons can hold 300whp, soon thereafter the piston's ringlands will give out

thats what you said, it doesnt say around 300whp, it says pistons can hold 300whp. but thats cool if thats what you meant because you seem to be the only other person that knows the stock internals will only handle around 300whp, others seem to think more or less or whatevers.

and then rods will snap at around 310whp. 10whp is nothing if they snap at 310whp then they can certainly snap at 300whp. it would be just fair to say that you shouldnt go higher then 300whp, any higher and you lose reliability. you can go higher then 300whp but higher and its not a given on how long the motor will last. but as a general rule and previous motors that tuners have seen and tuned, anything higher then 300whp has lead to a blown motor faster, so its not that its impossible its just that hte motor will likely not last as long

actually a test ive seen on a lsvtec with a b16 and a gsr head, the gsr head came out with more hp, shown on a dyno sheet. gsr head is a better head to start out with anyways, more potential

cronic did you even read my post, i said stock rods holding just fine @ 350+ hp.been boosted @ 17 psi for year now daily driven, not to be rude dude but duh! a gsr will get more horsepower beause of the larger displacement also more torque,( that's like comparing an h22a to any 1.8 vtec and trying to tell me that sock the h22 would have more hp duh duh duh duh)(like those dumb domestic idiots say" no replacement for displacent ,even a turbo") it is not an idication that that the head flows any better because like i said the b16 head is identical minus the itr's slighly larger valves and a factory port and polish and if you know your stuff you would know that that itr's head is the best honda head from the factory. i told that this is what i do for a living man build motors

Aparently no one here reads...
A ~ as I put in front of the 300, means around.
Your motor making 355whp on stock pistons/rods is a freak of nature. Personally I dont believe it's anything but luck that your engine is still alive.

No one is contesting that a GSR can make more power. Im not sure what you're getting at. I've seen a flow bench of a stock B16a2, and a B18c1 head. The GSR flows slightly better up top. kthxbye.
A b16 is not the same as an ITR, the cams are different, the valve springs are different, as well as the light PnP. You are very wrong here. Actually, the combustion chambers might even be different here. I dont know that for a fact however.

If you build motors for a living, an use stock rods to make 355whp. You're a retard, and your putting your customers on a razor edge of performance and reliability.

The stock B16a pistons can hold 300whp, soon thereafter the piston's ringlands will give out

thats what you said, it doesnt say around 300whp, it says pistons can hold 300whp. but thats cool if thats what you meant because you seem to be the only other person that knows the stock internals will only handle around 300whp, others seem to think more or less or whatevers.

and then rods will snap at around 310whp. 10whp is nothing if they snap at 310whp then they can certainly snap at 300whp. it would be just fair to say that you shouldnt go higher then 300whp, any higher and you lose reliability. you can go higher then 300whp but higher and its not a given on how long the motor will last. but as a general rule and previous motors that tuners have seen and tuned, anything higher then 300whp has lead to a blown motor faster, so its not that its impossible its just that hte motor will likely not last as long

actually a test ive seen on a lsvtec with a b16 and a gsr head, the gsr head came out with more hp, shown on a dyno sheet. gsr head is a better head to start out with anyways, more potential

Im not arguing with anything your sayin here. 300whp is where i'd stop on stock internals. Too many motors have I watched blow up above that number.

again i say did you even read my post i said that i was running forged pistons JE 9:5:1 cr which in will hold upwards of 350 hp no sweat so before you go and talk your shit" READ!" and yes i guess what i meant to say is the heads heads are identical cast from the same shit from the factory and yes the valvetrain parts are different never said they were not i said that the heads were the same. and yet again you are wrong because b16 flow better for the same reason the type-r does so go look at some more flow charts and make sure you have your glasses on okay BIGBOY

I'm pretty sure the b16 head flows better than the b18c. But you guys did make the mistake of thinking he meant at exactly 300whp. Boosted how about a posting yor dyno numbers up, cause quite frankly i call BS. No way your rods held up to a year's worth of abuse at 330+whp.

Prove me wrong then. Go do your own reasearch and post it up. I already have seen the flow charts from the two heads. There is a marginal difference, but it's there.

the gsr head does flow better, ive seen dyno number on a ls vtec with b16 and gsr head. it made about 10 more hp.

ok well now that boostedteg said his cr is lower i believe it. because jeff @ IB is making 350 something whp on his gsr stock block but with a thicker hg to lower compression so i believe it is possible.

but the fact that you say only 350 at 17psi is BS, you either got the worse motor ever, or you got the worse tune ever. ive never seen any motor making that little whp at that psi.

It could be too large, or too small of a turbo.

My friend's LS made 276whp @ 18psi on a PT67/t3 (.63a/r)
The turbo didn't make full boost until 7K, the turbo was rediculously big for his car, and still had the small shaft in it with only a stage 5 wheel. So there was no way he was going to get anywhere with that turbo. I couldn't believe anyone even made that combination for him.. but anything for a buck I guess.

With a properly sized turbo, on a GSR. 10psi should net 300whp. Gaining anywhere from 7-12whp/psi. Just depends on tuning, and the size of the turbo.

not to be rude dude but duh! a gsr will get more horsepower beause of the larger displacement also more torque,( that's like comparing an h22a to any 1.8 vtec and trying to tell me that sock the h22 would have more hp duh duh duh duh)

he didnt say B18C vs B16A ENGINE, it was a LSVTEC with a GSR HEAD and one head a SI HEAD