i'm picking up an LS shortblock this weekend and i'm gonna start building it. i plan on doing LS/VTEC with a gsr head and then going boost. what do you guys think my best options are in the way of pistions and rods would be? i know a lot about boosting cars but i've never built a motor. thanks.
building for boost, help?
- Thread starter bompdrop
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unstable ls/vtec? why would that be?
i would get a set of 81.5mm wiseco pistons, and eagle rods. 9:1 compression would be ideal.
thats only 2 parts of many that you need though.
i would get a set of 81.5mm wiseco pistons, and eagle rods. 9:1 compression would be ideal.
thats only 2 parts of many that you need though.
Green is right, dont boost a LS/VTEC... either just boost the LS or go all motor. you build an ls vtec for high revin hp, along with raising your compression.... plus boost equals a time bomb.....i suggest a ls turbo... cheaper and u get a more stable engine with just as much power, vtec is not all that great man.
Ls turbos are great motors, I dont want Vtec on my turbo setup. Just one more thing that would need tuned.
yes, technically, a ls/vtec turbo is a possibility but the worst one. like they said its a ticking time bomb with compression and such. just boost the LS and you wont de dissapointed. unless its a gsr/b16a/LS i wouldnt go turbo((considering b-series)). but yes with boost and vtec tuning is your best friend and KNOW who's tuning your s**t lol.
Take the money you would have spent on the head, and put it toward some internal work.
your ignorance is astounding...
why NOT do an LS/VTEC? the b series vtec heads have been proven to outflow non vtecs by a substantial amount. DEFINITELY worth the extra money.
You should read your own sig, just cause everybody else is doing LS/Vtecs doesn't mean its the best thing to do. LS engines have made impressive numbers without the aid of vtec. Doesn't mean I agree with 253eg.
Billy.
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the heads are known to flow better, especially over an LS head. the slightly added compression helps make power quicker than without it thus less boost is necessary to reach your ultimate goal.
if you think vtec is stupid, get a f**kin neon
Why is it that just because we have a honda we are somehow obligated to have vtec??
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theres nothing unstable about ls/vtec. instead of using 12.4:1 cr pistons just use 9:1 cr pistons and throw boost stability concerns out the window.where not, i just bought my first vtec engine, but that becouse i got it for a hell of a deal.
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the concept is simple.
vtec engines = oem performance. they were built for added performance over non-vtec engines.
in which cars do we see vtec engines. civic si, civic ex, gsr, itr, ctr, s2000, NSX, etc.. all of which were built and geared for added performance (some more than others)
in which cars do we see non-vtec engines, dx, lx, cx, ls, etc... all of which were built and geared for fuel efficiency (some more than others)
and the vx engine i like to think as an error by honda. my hypothesis on it is honda made it too fuel efficient and it lacked tremendous pick up power. they had to do something about it, so they added vtec-e in the powerband where they would need it... a whopping 900rpms total of vtec power1!!!1
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I think bombdrop needs to let us know what kind of numbers hes shooting for.
Id still rather have a boosted ls then a boosted ls/vtec
Id still rather have a boosted ls then a boosted ls/vtec
well i'm picking up an LS head tomorrow and i've got my block so i'm stick with straight LS for now. i've had a DA integra rs before and loved it. just thought maybe throwing a gsr head on there would give me a little benefit but i guess not haha. i'm planning on going turbo, but what compression should i go for with just an LS? and should i bore the block? i know a little bit about head work but almost nothing about pistons and rods. help me out please.
With a turbo setup, 9:1 comp. is ideal. On a honda engine, you would resleeve the block rather bore it out. But, it all depends on how much you're willing to spend on this.