high comp and boost

[Devin]

could you run any amount of boost at all with 12:1 comp, i have all forged internals

[4doorkiller]

i aint the smartest, but i would expect that at low psi with 12.1 cpr you should put out substantial numbers anyway. how many psi were you looking towards running under?

[Devin]

i aint the smartest, but i would expect that at low psi with 12.1 cpr you should put out substantial numbers anyway. how many psi were you looking towards running under?

as much as possible with out it getting dangerous for the engine i have alot in the build but with the comp that high i have to retard the hell out of the timing and it is slow on take off

[4doorkiller]

if i were you, i would play it safe at first. run a low 8psi. just somewhere to start off with. if you arent happy with your numbers then turn up the boost. i cant tell you what numbers you will but out because i am not sure of the mods you have done so far. but i do know this: at 10.1cpr on 1.6L engine and a skunk2 manifold, we put out 310whp and 240tq. this was also on 10psi! so at 12.1cpr and with a 2.2L engine, i cant wait to see wat numbers you come up with.

[Devin]

if i were you, i would play it safe at first. run a low 8psi. just somewhere to start off with. if you arent happy with your numbers then turn up the boost. i cant tell you what numbers you will but out because i am not sure of the mods you have done so far. but i do know this: at 10.1cpr on 1.6L engine and a skunk2 manifold, we put out 310whp and 240tq. this was also on 10psi! so at 12.1cpr and with a 2.2L engine, i cant wait to see wat numbers you come up with.

thanx u guyz

[dbsharp]

what kind of gas are you going to be using?

[9Deucelx]

wait i thought high comp. and boost dont get along? some one plz answer

[d112crzy]

it all depends on your tune. if you can tune, then you have nothing to worry about.

when you have a higher compression engine and you mix boost in, you have a smaller margin for error when it comes to tuning. its not exactly bad, but just a bit more dangerous and easier to blow up an engine.

I'm gona do a high compression boost build one of these days. 11.0 to be exact.

[4doorkiller]

wait i thought high comp. and boost dont get along? some one plz answer

holy crap your right! i forgot about that factor! 12.1cpr if i am not mistaken is strictly drag. research, research, RESEARCH!

[d112crzy]

its not strictly drag.

anyone that is interested in boost, the last thing on your mind should be the compression ratio of your engine.

learn how to tune!

[9Deucelx]

i agree d11 tuning is essential with n e kind of engine build..but wouldnt a low comp. engine make more power than a high comp. on the same boosted engine?

[h22sparkle]

its not strictly drag.

anyone that is interested in boost, the last thing on your mind should be the compression ratio of your engine.

learn how to tune!

thats just one but mainly 1 of the many important factors. Then you have to maintain that shit and monitor it for even the slightest hiccup could be your last.

[4doorkiller]

speakin of tuning, when taking my car to get tuned, what all should i expect this people to be doing to this engine? i know i cant be taught how to tune in one thread, but i would rather know a little bit about the process rather than being completely clueless. also, how can i learn how to tune these vehicles? i have often wandered how tuners become just that.

[HondaB18]

i agree d11 tuning is essential with n e kind of engine build..but wouldnt a low comp. engine make more power than a high comp. on the same boosted engine?

Not quite but there are exceptions. Given the same scenario but with a higher compression engine with smaller boost the output could be the same if not within the same range as the engine running lower compression with higher boost. It is power that should be concerned and not psi level. And yes margin of error for tuning is decreased.

[NAiL05]

I have a vid of a teggy running 11.5:1 compression boosting like 12 psi or somethin. As D112 mentioned depends on the tune mainly which is basically essential for any turbo setup actually.