v3 STi engine into BG5

[Firenza]

I'm thinking of buying a cheap BG5 Legacy with a bung engine and sticking my old v3 sti shortblock into it as a new daily driver.

How hard would it be, what issues do people think I would have, and would there be any disadvantages to using the forged STi motor (lower performance due to different compression ratio?)

Any thoughts or help would be cool!

[rex-leggy]

easy as ! no problems has it got a busted engine?

[Firenza]

?

well, the engine in the garage has a warped head, so I thought id jut use the ones from the leggy.

The legacy would have a busted engine, as thats why id get it cheap!!

[rex-leggy]

would work fine blocks are the same . you'll also have the base for some upgrades later if you decide to go single turbo

there will be no issues with compression just heads on and away you go.

i would find out the reason why the bg5 engine let go as you wouldn't want to do the same to the v/3 block

[xxMELZxx]

Correct me if im wrong but wouldn't sti heads be better. Aren't leggy heads tappet and sti heads not

[Firenza]

The one of the STI heads are munted. Thats the reason behind using the Leggy ones.

[rex-leggy]

depends on which bg5 . could be Hydraulic lifters or shim over..... cam profile should be very similar if even identical .

have also been informed lately that gtb heads may even have better profiles then the sti.

info wasn't from me tho.

[Koom]

Make sure its a BG5b and not a BG5a and you'll be away laughing.

[Firenza]

I've been told to go for 1996 onward manual GTs as the auto uses a lesser engine. :-\

And of course, every GT available with a rooted engine is pre96 and auto

[Koom]

Depends on what you are going to end up doing to it really.

i.e. if you just want to get it going and leave it in stock format, then any model of BG could be a possiblity (although as I type that I'm not sure how compatible the early heads are with the v3 shortblock?)

But if you want to single turbo it, its easy as pi** with a BG5b. And you end up with a nic-ish daily that has midrange torque

[rex-leggy]

there all compatible you can slap any head pre avcs on any block and it will work. (even as early as 1990 rs/gt heads)

the pre 96 heads your talking about are the Hydraulic lifter type . nothing wrong with them imo...... i run them

the lifters can get a little noisy but you would give them a once over before you use them no matter what you use.

also my engines a 96 so it may be from 97 onwards.

[WRXONP]

keen to sell the STI heads ?

[xxMELZxx]

They're fucked you douche

[rex-leggy]

unless its warped really bad getting them decked and they could possibly be used . depends if they've gone soft .

id be keen to buy them also just for the parts inside ;D