build safer rev with lsVtec

[sleepwalker50]

i have a 94 ls coupe and i was think of going ls tec all motor but i was wondering what can i do so i can rev higher with out messing up my block
im planing to do a
ctr head
itr piston
skunk2 intake manifold
spoon throttle body
skunk2 cams

and is there another way so i can do a 5lug conversion with out spending the money on type r

 

[inline4four]

ARP rod bolts will let you rev a little higher. LS rods arent the best either. I would replace the rods and use ARP hardware. as for your 5-lug conversion question. look to spend anywhere form $1000-$2000 for a complete conversion. www.inlinefour.com has 5-lug conversions and I believe www.hmotorsonline.com also has them. Hmotors would have a better price.

 

[jsnm]

mainly I would upgrade the valvetrain in the head to keep high-revving safer.i used KMS valves,springs(good to 11,000 rpms),and retainers. http://www.honda-performance.com >got them here.also,yes the ARP head studs.i run ls/vtec up to 8500 rpms with no problems.

 

[Baldy201]

The reason LS VTEC's blow up is oil starvation. especially in the head. If you up grade the oil pump to a GSR or ITR oil pump you will be better off. Along with what inline said, the weakest part on the LS is the rod bolts and the rods.

 

[slow_99integra]

i personally have heard bad things about the ls/vtec....please if i am wrong correct me.......
ls vtec work much better with high CR. stay away from a turbo ls/vtec. i looked into building this engine, and to me for the money the cons outweigh the pros. Example: the vtec head doese not fit exactly on the ls block, therefore the head must A. be machined to fit the block or B. a ls/vtec conversion kit must be used. Next: the water pump on the gsr have i believe 21teeth and the ls have 19 teeth the gsr water pump must be switched. Also the gsr oil pump is needed to the supply the needed oil to the head. Then the ls pistons will not be a good enough CR, so itr or gsr pistons are needed. Next the vtec oil line needed to tap the block to the head. In theory this is a brand new engine and all the bearings should be replace and everything should be resurfaced. Also a vtec controller or a gsr ecu. This just seemed like too much work. if this is not built correctly it will not last.

 

[DC2-Integra]

yea i'm debating on going this " ls/vtec" route on my integra, but i'm still in question about how reliable it is, i've got a few friends that have built it and have had no problems w/ it, but then again i have heard some stories that make you just want to be like uhm no and consider something else instead of this conversion, i was thinking maybe boost? ( shrugs ) we'll see : )

 

[Baldy201]

It all depends on how close you pay attention to detail and how healthy your engine is before you do the conversion. It is true that VTEC like the higher compression, that is why the GSR has 10:1 comp where the LS has 9.5:1. If done right to a healthy engine, there is no reason that LS/VTEC will blow.

 

[dc2nr]

i have no problems running my stock gsr to 8500rpms, but far has higher reving goes, u would need a stronger valve train.

 

[Blackout_GSR]

I personally can speak from experience i have a gsr with a b18A block and a Gsr head , i have no problems hitting 8000 rpm plus , my shyt moves! i have no probelm taking out Gsrs the only drawback i have is this knock sensor problem. So go with the Ls/vtec