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Early Sti Rebuild Vs Version 3&4 Engine Change
Topic Started: Jun 16 2008, 11:07 AM (161 Views)
davidgoodwinuk
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1993 WRX
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Hi guys, i have a 1994 sti version 1 and i am thinking of getting an engine rebuild by triton motorsport but i am thinking of just changing the engine for a sti version 3&4 engine my question is this...

the rebuild they do costs around £3,000 i think and they do use all the best internals, i am looking to get 400bhp over the next few years, would the internals of a sti version 3&4 handle this sort of power or do i need the rebuild on the engine i already have in the car (closed Deck).

Hope you can all understand my question :blink:

David
[GK-customfield]David Goodwin[customfield-GK]
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myblackwrx
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Doesn't have a home to go to!
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Just rebuild your engine v3&4 engines will still have to be rebuit to take 400bhp reliably.
When i've asked Triton they say they build the engines to cope with 400+bhp.

tbh 400bhp is a lot to put in a road car a classic with 320+ is pretty damn quick
[GK-customfield]Paul[customfield-GK]
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impreza94
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Rick GTR
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If your car is running a closed deck already then get it rebuilt mate, at least that way you know the engines history. A ver3-4 block will take 400hp if its in great condition but your still gonna have to change parts on it eg- injectors, turbo, fuel pump, remap and tmic i hope that helps :rock:
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Ian
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Part of team impreza
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might have a version 6 engine for sale soon :D
im not lazy im just chilled
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LJ
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Ian
Jun 16 2008, 12:13 PM
might have a version 6 engine for sale soon :D

i may be interested in ur engine Ian if you manage to buy your "wonky" one back :lol: :P
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Ian
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i need to buy it back i seem to have sold every thing all ready lol
im not lazy im just chilled
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myblackwrx
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Ian
Jun 16 2008, 11:31 AM
i need to buy it back i seem to have sold every thing all ready lol

At least your'll get your money back :)
[GK-customfield]Paul[customfield-GK]
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RA Jay
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4 Have Gone But Never Forgotten.
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The road i would take would be a 2.5 short block fitted your existing heads etc which would cost alot less than 3k and will take 400bhp.
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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CU, KEV
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400 is an expensive target to hit, you'll need to uprate quite a bit to get a truely reliable car.

Gearbox will be the next weakest item, a standard box will not withstand 400bhp for long at all! and with that goes uprated clutch etc.

You'll then need to sort out fueling with 255 fuel pump, larger injectors, pressure regulator, maybe a parallel fuel rail kit.

Then cooling - front mount i/c, induction kit, 3" turbo back exhaust; but i'm sure some of those mods have been done already?

Then comes the ecu - stand alone ecu's aren't really that cheap! and you'll also need a boost controller of some sort.
thats quite a list so far and we haven't even mentioned turbos.... thats going to be £1000 alone.

I would stay 2ltr tbh as you have a closed deck block already; a version 3-4 would need uprating to closed deck anyway.

If you do decide to go down that route then fairplay, but you might want to invest in stopping and handling mods also, as a car of that age with 400horsies and 400 torques will be a handful.

In all honesty if you have a good engine already then 350 is a nice mark to hit, that will set you back a few k, where as 400 will cost 3-4 x that!! if done correctly.. or if you really want big power, buy a car with it done already - that will save you a fortune.

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davidgoodwinuk
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1993 WRX
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i do understand that 400bhp will cost alot but its a long term plan and wont be happening over night.

if i want more than 320 bhp on my early sti i will need to get a rebuild anyway as i was told it will melt if i go any further so if i am getting this done i am as well go full hog and try to get to the 400 mark.

i would be happyish with 350bhp but if i am going to spend 3k to build a new engine and only try for an extra 20 bhp that i could get on the standard internals seems a bit pointless.

if the later sti internals would handle 350-360 bhp then i think i would be happy with that, if not then i will need the rebuild.

Thanks david
[GK-customfield]David Goodwin[customfield-GK]
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LegacyTurbo
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y0
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for a decent closed deck 2.5 with forgies etc its about 3k+ just for the short block.
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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davidgoodwinuk
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1993 WRX
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i do understand that 400bhp will cost alot but its a long term plan and wont be happening over night.

if i want more than 320 bhp on my early sti i will need to get a rebuild anyway as i was told it will melt if i go any further so if i am getting this done i am as well go full hog and try to get to the 400 mark.

i would be happyish with 350bhp but if i am going to spend 3k to build a new engine and only try for an extra 20 bhp that i could get on the standard internals seems a bit pointless.

if the later sti internals would handle 350-360 bhp then i think i would be happy with that, if not then i will need the rebuild.

Thanks david
[GK-customfield]David Goodwin[customfield-GK]
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CU, KEV
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What are you getting done for £3000? and does that include vat?

I'm not trying to put you off, just make sure you have everything listed you need and prices also - its easy to forget something simple and that could end up costing a pretty penny.

As a guide here's a basic cost break down of what i had done:-
(and that doesn't include the lovely 17.5% :angry: )

Engine

Build and supply steel rods, forged pistons, CDB short motor - 1695.00
Version 4 cam belt & gasket set - 250.00
Overhaul cylinder heads - 300.00
(includes relap all valves, balance combustion chambers, reset valve spring lengths, reshim all tappets)
Build up heads and short motor, clean all existing reuseable parts etc etc 400.00
Remove & fit complete engine to car - 600.00
(includes all oils, liquids and consumable parts.)
Supply and heatproof wrap & fit tubular headers - 350.00
Supply and fit stainless dash 6 parallel fuel rail kit - 300.00

Sub Total - 3895.00

PS I think standard STi internals (well V3-4) will handle upto 360bhp, but that is at the top of their limits and that of the box too.
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davidgoodwinuk
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1993 WRX
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£3,000 was for the engine rebuild only quoted by triton then on top are all the other goodies

turbo
fuel pump
injecters
ecu
ect ect.

Thanks David
[GK-customfield]David Goodwin[customfield-GK]
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