westmore

i have a 1999 subaru impreza 2000 turbo AWD,

i have found a 1996 wrx engine but people have told me that it will fit but it is the wrong engine, the gear box wont fit!!!

so if i also get a 1996 gear box to go on the 1996 wrx engine will my 1999 running gear fit the 1996 gear box.

or does any 1 no were i can get a 1999 turbro engine from???

thanks alan

alanbell

iTrader: (6)

the engine will fit , and your uk gearbox and diff will fit to it .

westmore

the rear diff then and thats it

Jay m A

iTrader: (2)

I take it you have a blown engine and need a replacement - your car is a MY99?

If so this 1996 engine will fit, but you will need to fit your 99 heads to the 96 short engine.

So if your blown engine includes bent valves etc then a MY96 long engine isn't a direct swap, because your 99 inlet manifold won't fit the earlier 96 heads

It will fit your gearbox though, any turbo engine will mate with any turbo gearbox.

westmore

thanks 4 your help m8

why wont the top end of the 1996 engine fit then.
is it to do with wires or what. why have i got to put the 1999 head on which is fine.

and you are definate that the 1996 engine will fit my 1999 gear box.

thanks alan

landy_man

now ive herd tht the difference between differnt years is the oil feed pipe to the turbo needs lengthening?

landy_man

i think u should buy the engine compare it to ur current engine and change which ever parts are needed to make it work, im sure ur god of a mechanic will do tht for u?? :-D

APIDavid

iTrader: (4)

This could turn into a nightmare. AND a right dogs dinner to try and get bits for in the future.

As it comes the 96 engine will physically go into the car, but the inlet manifold off the 99 won't go on as the stud pattern for it is wrong.

The electronics off the 99 car manifold won't go on the 96 manifold. The heads could be swapped, but you would need to use head gaskets appropriate for the 96 short motor, which have a different thickness to the head gaskets off the 99 car.

None of the PAS equipment off the 99 fits easily on the 96 car if the 96 inlet manifold is used.

All in all it is not easy.

The WRX gearbox will physically go in the car, but the final drive ratio may well be 4.1 and the original car gearbox is 3.9 ratio final drive at the front and 3.5 at the rear. The 96 gearbox which is 4.1 ratio final drive, will need a 4.1 ratio rear diff to match the front final drive. Then the rear drive shafts may not be compatible between the 96 diff and the 99 diff.

At the end of that you will have a 99 car with inferior running gear as the 96 engine and box are not as strong as the 99 stuff.

WHY DO THAT?

David APi

landy_man

so where can u get a bottom end or rebuilt engine? for a 99? been searching everywhere?

APIDavid

iTrader: (4)

Try calling me ?

Spec'c'57

iTrader: (1)

james-wrx

Hi David,

Quite clearly you are the resident expert on everything Impreza!

Can you tell me what i need to do to fit an Sti V3 or V4 gearbox to a 1995 WRX that currently has a P1 gearbox in it?

Assuming the final drives are the same on the P1 as the Sti shouldnt it go straight in?

Assuming the Sti one wont go straight in without the diff etc then would a u.k one?

APIDavid

iTrader: (4)

I assume then that something is wrong with the P1 box ? as that would be the best option, it is rather stronger than any of your other choices.

The STi Vers 3 or 4 box will go in assuming that the rear diff has been changed at some time to match the P1 box. The WRX could be either a 3.9 or 4.1 rear diff as standard and P1, vers 3 / 4 / 5 / 6 are all 4.4 rear diff.

Even so my preference and adviice would be to fis the 1 box if its sensibley fixable as the others are not good for hard use vand invreased power.

UK box won't go is as all UK WRX [ equivalent ] are 3.545 rear diff.

Good Luck - call me if you need more clarification in any way.

David APi

james-wrx

Thanks for the excellent response David!

I have a feeling the P1 box is in a bit of a bad way 4th gear Syncro is on it's last legs and the box makes some very strange sounds!

I dont want to get rid of the box I want to keep it and have it rebuilt at a later date when funds permit. I appreciate what you are saying about the Sti ones not being as robust and was hoping to buy a cheap 2nd hand one as a temp measure while I have the P1 box repaired, also cant really afford to have the car off the road while the box is repaired so this seems like the best option (in the short term) I just need a cheap 2nd hand box that will go straight in without changing diffs etc. I cant afford to buy an Sti box and have the P1 box repaired at the same time, not knowing what damage has been done to the P1 box im thinking in terms of worst case scenario!

landy_man

david how do i reach u? wots ur number? can u email/pm me if u have a 2000 v reg impreza engine?

APIDavid

iTrader: (4)

Landy man, 01926 614333 or 614522

Good Luck David

PS Not Saturday

landy_man

cheers il try and ring u monday

landy_man

david reading back and trying to understand?
so if i got hold of a 96 bottom end would i just need to swap the headgaskets to same age to fit my 99 heads and all other parts will fit??

APIDavid

iTrader: (4)

Not as easy as that mate, The piston height to bore top is different between 96 and 99 engines and also the compression chamber in the heads is matched to the piston height.

Do it wrong and you can up with too much compression or way too little. then the problem is that by taking [ or adding ] the difference of the head gasket's thickness, you can change the width of the block and head dimension by up to 2mm. Which means that your inlet manifold bolt holes won't reach across the 2mm difference

It'll work in principle, but not very well.

David

landy_man

ok thanks david il have to decide wot to do and maybe pm you if i have any other probs

many thanks