question....i plan on getting my ls built into an ls/vtec, and was just wondering if the stock ls crankshaft can hold 8k rpm without any problems. or will the crank have to be micropolished and blah blah??? thanks

 

your LS engine doesnt make power past 7800 rpm. LS/Vtec is a horrible idea, if it wasnt honda would have done it 10 years ago. the LS block isnt a high reving block, the Vtec head is a high reving head. you could bore out the block and sleeve it with ITR internals, but thatll hold up for about a year. answer: no

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hate &raquo;</TD></TR><TR><TD CLASS="quote">your LS engine doesnt make power past 7800 rpm. LS/Vtec is a horrible idea, if it wasnt honda would have done it 10 years ago. the LS block isnt a high reving block, the Vtec head is a high reving head. you could bore out the block and sleeve it with ITR internals, but thatll hold up for about a year. answer: no</TD></TR></TABLE>

lol, man you need to read more before you answere this type of questions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EvilIntegrationLS &raquo;</TD></TR><TR><TD CLASS="quote">question....i plan on getting my ls built into an ls/vtec, and was just wondering if the stock ls crankshaft can hold 8k rpm without any problems. or will the crank have to be micropolished and blah blah??? thanks</TD></TR></TABLE>

do a search, you can find alot of info on how to build a reliable ls/vtec

 

i think you're missing the question, i asked about the crank holding up past 8k rpm, not if the block is high reving. its only revved that high because it is a non vtec motor with low compression, so yea, naturally it wont rev that high in the first place. but i'm asking about the crank.

 

i need to read more? ok let me explain this better. the b18a/b bottom end cant handle high revs. thats why an LS/VTEC conversion isnt an efficient setup. the rod/stroke ratio limits how high a motor can rev. follow. and the b18a/b doesnt have a high revving r/s ratio. on top of that the LS doesnt ahev oil squirters capable of providing enough oil at higher rpms. oh and a typo from before the redline is 6800...not 7800

 

haha, yea i was about to correct you on that earlier...6800

 

dude...LS/VTEC = bad idea. your still up for spending as much money as it would take to swap a decent motor in? the answer is yes for a short amount of time it will hold up

 

for the amount of money it would take to build a reliable LS/VTEC you could swap in a C1 long block and ecu

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hate &raquo;</TD></TR><TR><TD CLASS="quote">dude...LS/VTEC = bad idea. your still up for spending as much money as it would take to swap a decent motor in? the answer is yes for a short amount of time it will hold up
</TD></TR></TABLE>

STFU...don't throw words around when you have only heard them from other people, thats whats called a rumor...if you don't know the real facts about it, don't spread the rumors around...

and a well-built (keyword:well-built) ls/vtec setup is just as reliable as any other...trust me, I've done it...

 

do a search!

i dont believe the crank is different???????
could be though

 

I have a LS VTEC and I sift at 8500 just put on a type r oil and water pump. That oil squirter **** is for **** I know many people who put ctr slugs in their gsr and do you think they shift at 6800 shut up you don't even have a LS block you never drove a LS block so why give some stupid IMO bull ****.

 

ive never driven an LS block? i have a ****** LS. Ive also driven a LS/Vtec with itr internals. The LS/Vtec motor lasted for about a year....end yourself.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hate &raquo;</TD></TR><TR><TD CLASS="quote">ive never driven an LS block? i have a ****** LS. Ive also driven a LS/Vtec with itr internals. The LS/Vtec motor lasted for about a year....end yourself.</TD></TR></TABLE>

so you built the ls/vtec? maybe thats part of the reason it didnt last...

 

All you guys have to remember is when that issue of IMPORT RACER came out and on the front page had a integra LS/VTEC with TURBO pushing 500hp!... that is reliable... enough said

 

HA HA

 

hmmm a pissing contets...ill stay out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JeremyL &raquo;</TD></TR><TR><TD CLASS="quote">hmmm a pissing contets...ill stay out</TD></TR></TABLE>

hahaha, one question is all it takes

 

i dont see why an LS crank powered engine wouldnt be able to rev as high as long as the bearings can take it and its all put together properly

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hate &raquo;</TD></TR><TR><TD CLASS="quote">ive never driven an LS block? i have a ****** LS. Ive also driven a LS/Vtec with itr internals. The LS/Vtec motor lasted for about a year....end yourself.</TD></TR></TABLE>

Jeez you make it sound like LS/Vtec is the end of the world. Yes there are other motors you can mod for that much money, but what if the person doesnt care and is set on building an ls/vtec? It can be as reliable as any. For the oil squiters, screw it, just get forged pistons. For revving to 8grand, Crower 404 cams make power up to 8000, so there are cams that require ls motors to rev to 8. As for your friends motor blowing up, I'd say poorly built, or poorly driven. If the bottom end is built correctly withing spec, new bearings, and fully balanced bottom end, it should last also with the assumption you don't drive like ****. By the way, you can have a nice stock type R motor and still kill it in a year if you drive like ****.

 

tuning and grade of gas used is probably an even bigger factor in longevity than the quality of the build, of course there is no better tuning factor than a reasonable and compotent driver

 

i disagree. I know somebody with an ls/vtec. good power and very fast! and its lasted way longer than a year Its a good combo, i say go for it!

 

what if you were to use a b17 crank or a b18c crank?...wouldnt that make your r/s ratio much better therefore allowing it to rev higher safer?

 

get a stroker kit

 

the best way to go high revving and still have good torque would be to use a B16 block and bore it 84mm