just buy my jdm itr pistons and rings and ls rods for 245 and you will be set...not really but you will have some good pistons and rods...lol pm if you have ?S you know where to find me...

 

but with a tankfull of 110+ octane and the race gas tune, you'll have another 10-20whp to play with. I think thats worth the extra work.

 

not for a dd...id wouldnt recommend it..id go with jdm b16a pistons..thats what i got and honestly the car pulls hard as fuck..and its not even tuned.

 

first off, just to clarify, i said two posts ago that the increase in compression shifts the powerband up, not right. if you look at a dyno sheet, and i will be happy to demonstrate if need be, the line showing the relation between power and RPM (the powerband) will shift straight up with an increase in compression. you mentioned cams... and as im sure you will recall, bigger cams will shift the powerband to the right, in essence, making more power top end and equal or less low end (assuming no increase in rev limit)

secondly, you say compression does not affect idle. so you are saying, if i take a B18 that idles at 750, and increase its compression from ~9.6:1 (stock) and crank the compression to 13:1, it will idle just fine at 750? if you are telling me it wont be happier idling higher, and can back that up, then i will apologize for the trouble and admit im wrong. i have no problem doing so. but i believe you incorrect saying compression does not affect idle.

finally, about piston speed. actually, you are going in the right direction with the LS comment you made. engines with lower rod/stroke ratios will actually make more power at lower RPM (and lose efficiency faster, hence lower rev limits) than the same engine with a better rod/stroke ratio, because at extreme crank angles the longer stroke pulls the piston down faster, hence higher piston speed, and hence more vacuum to suck in more air to make more power.

i really dont mean any hard feelings.... i am an engineering student but i would like to get the most practical experience i can. hence, me on here talkin about engines.

the purpose of me warning whoever it was about going too high with the compression (13:1) was that it would be more trouble than its worth, and according to Kevin, who says he has experience tuning these setups, i was correct.

but, if you want to call me a fool and laugh instead of correcting me and moving on, that its your perogative.

 

I have much more tuning time than kevin. he is more of a builder/fabricator. He is very good at what he does. I have given up on the high compression honda's 4-5 years ago, boosted only now. I have alot of experience building/tuning/fabricating honda/nissan/toyota cars. I just closed the doors to my shop about 3 months ago, to finish school. It just strikes a nerve when people shoot off at the mouth when, they have no PERSONAL experience. Only word of mouth experience. which, as we all know, is not always true.

 

+12345678910.....

I have had to detune tons of setups with over 12:1
I simply would not recommend anything over a c/r of 11.8:1 on a 1.8L bseries build on pump.

 

so you are offended that i voiced an opinion?

please dont take this the wrong way, this is nothing personal, but u are getting pissed at me for providing an answer to a question with the best information i have availible to me. the whole point of this forum is to get different opinions. and like i said, im not going to be stubborn. if im wrong i have no problem admitting that, but i, as of yet, have no reason to believe i am.

again, please refer to my very first post on this thread, where i said, and i quote:
i never misled anyone, or gave any impression i had personal experience with this. im sorry to HKShatian for all this shit on your thread. i hope the info i provided could be of some help, if for nothing more than a conservative approach.

 

Wat tranny are u running?

 

It's alright man i'm learning alot from this thread.

 

if i was building an all motor 1.8 and wanted some decent acceleration (which i am, and do) i would get a B16A tranny (which i have )

yes, it sucks on the interstate, but there is nothing short of an ITR/CTR that will make your car feel faster. i love mine with my B18B... and if i bump the compression it will just get better.

as for the info on here, as you know, i dont have any experience with LS/VTEC, but i have built plentiful motors, and the info i found about the pistons seems pretty legit to me.

if you would like me to post up some of the links i found, i would be happy to, so you can check em out yourself.