turbopyitr

what all do i need for a ls/vtec conversion and how much does it cost? from what i can gather...a ls block, a gsr or type r head, a ecu (not sure which one)..which headers? and will the headers bolt on to the stock 93 civic dx exhuast or would i need a new or custom exhuast?? help plz1!!

Speedz

I've been researching this myself this is what i've found:

you'll need a B18a/b block, crank, rods.
your choice of b-series VTEC Head, i'm going with a B16a
ECU, look for a PR3 (JDM 89-91 B16A Integra) these are cheaper and more plentiful.
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this was taking from Hondata.com website.
- A B16A head on a LS Block can be driven with a P28, P30 and P72 if you have the OBD 1 distributor and wiring harness. On the P30 and P72 the knock sensor will need to be disabled. The P30 fuel and ignition tables are the most suitable, but custom tuning is desirable.

- If you have the pre-OBD 1 wiring harness and use a PR3 or PWO ECU (from a 89-91 JDM engine), you will need a matched (16 tooth) distributor. A knock sensor will need to be wired in.
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intake manifold and throttle body: Integra TypeR

you'll need to change the pistons, i was told the PR3 or p73 piston which give much higher compression as well at the valve relief necessary for the larger vtec pistons. Also highly recommended is a set of arp bolts and check the rods to make sure they arent too warn and stretched. you couldnt go wrong with getting a set of Crower connecting Rods or some other aftermarket performance rods

Also a p72/p73 oil pump will be necessary.
you'll need some SS braided hose and AN fittings to run your oil line from the block to the head for the VTEC valve train.

Use the B18a/b water pump

you'll need to upgrade the valve springs and all that stuff to aftermarket or ITR if you want to get revs over 7k to 8k rpm. old valve springs can cause problems.

for tranny, the LS tranny is taller geared than the GSR/ITR, its your choice. i'm keeping my LS 5speed.

it all depends on what your plans are, if you're planning on FI or NOS, you'll need to build the bottem end to handle the stress.

take your time and do it right
here's a website to look at that shows how to do the LS/VTEC conversion.

http://www.c-speedracing.com/howto/lsvtec/lsvtec.html

there are other websites out there that show how to do the LS/VTEC, but this one seems to be really good.

good luck.
i've seen cases of 195 hp from a stock LS/VTEC setup (flywheel) ... thats a nice place to start at.. then add ITR cams/ adjustable timing gears etc.
this is alot cheaper than buying a ITR engine and gets u about the same performance

turbopyitr

any idea on the price for that set up?

Speedz

i havent priced everything yet. i've been told the b16a head/intake system cost about $350, but i dont know. and i think about $300 for a PR3 ECU.. but i definately would shop around for the best deal.
i've been told about $1300 to $1700 total, i dont know yet, i'm buying parts as i got money. sux to be a poor college student that has to pay my own way.

Speedz

ttt,
anyone?

3rdShift.org

It all depends on how fast you want to go... you could spend a fortune. If you do all of the work and assembly yourself you should be able to spend between $1500 and $2500 for something reliable & fast.

Speedz

i have access to full machine shop, and dyno where i go to college. ..
i will be doing everything myself.

my goal is mid 12 second quarter NA.

i have pleanty of time to build this, i'm in no hurry, i want to do it right. not to mention that i dont have huge amounts of cash at one time. i'll buy things here and there as i have the money.

One8Hatch

who knows of which head gasket to use.i've heard of taking the b18a/b gasket and removing the little circle rings or was it the Vtec gasket? but yeah i've heard of people using the wrong gasket and blowing white smoke from exhaust and leaking oil. so which head gasket? thanks

turbopyitr

how much would a used ls/vtec with a gsr head cost vs a ls/vtec with a type r head? can anyone tell me why it costs from 1500 to 2500, the different parts etc?

Speedz

one8hatch, the B18 a/b is the one i saw used. since i'll be using my B18a block i think it'd be logical to use that head gasket and just modify it to work with the B16 head.

turbopyitr, the GSR/ITR heads will cost alot more than the B16a head. i dont have prices but, i'd guess they're close to $1k for them.

turbopyitr

what i meant is...how much is the whole conversion with the ls block?
anyways is a ls/vtec with a type r head and a ls tranny with shift linkage/axles/ecu pretty much everything installed for 3500 a good deal?


[Modified by turbopyitr, 3:17 AM 9/18/2001]

Speedz

well if they are doing everything including tuning... i dont think its to bad a deal, i'm not sure how many hours it'd take, but figuring in labor and stuff..

anyone else got comments??

when i do mine, i'm taking my time so i'm sure its gonna take quite a few hours.