Version 7 engine in 89 rs need info

[Mad rs]

Planing on putting version 7 engine in 89 rs legacy will everything fit in like old gear box old turbo engine mounts what\'s different???

[scooby-wrx]

Is it an STI engine - variable valve timing?

Power steering will need mods (lines etc). I think the rest fits, assuming its a WRX engine.

If its an STI engine, wiring loom will need mods to suit or replaced all together.

[Guest]

 scooby-wrx said:

Is it an STI engine - variable valve timing?

Power steering will need mods (lines etc). I think the rest fits, assuming its a WRX engine.

If its an STI engine, wiring loom will need mods to suit or replaced all together.

Some non sti are also avcs. Comp ratio will come into play regardless of whether youre doing shortblock or long.

[rex-leggy]

if its the complete v7 engine then a link is the easiest way .

then just rewire engine loom to suit.

if you just use the v7 shortblock thats the most strait foward option. (as above headgastets to suit)

need more details really

[F.F.Sltd]

Engine bolts in fine you will need to replace pas pump lines. If you csn get a front half loom from a gda plus fuel pump controller.

Have done 6 conversions last year. Easiest way if budget allows get a wire in g4 extreme.

[Pappu1]

if u dont wana use fuel pump controller, u can just remove the code from the ecu and it wont complain (from past experience on this type of conversion)

but yea as other have said - get the loom if u wana use the v7 ecu

its not a hard swap

[Mad rs]

Thanks guys it\'s a complete long block v7 non Sti non avcs can\'t afford to go aftermarket computer will just get wiring done so do I need a fuel controller aswell and what for? And it doesn\'t come with a flywheel is that interchangeable with the old one ?

[soopersubaru]

You should be able to do this straight swap without messing with too much. However the engine loom/intake manifold/idle control is different and this is where issues will occur. If you change the engine loom you will possibly be able to start it, However idle cannot be controlled as the system is stepper motor on V7 not induction coil. If you fit the RS manifold to the V7 engine (drilling or adapter required) it will run ok, But tuning will be out of kilter therefore an aftermarket ecu will be needed. So save your coin buy a link or similar then you can do it correctly and you will have a reliable ride. Thats what I did on my 91 anyway.

[boon]

Do you have the V7\'s computer? If so run that. I think you\'d be bonkers to try and rewire/convert to run on an old loom/manifold etc.

[Mad rs]

 boon said:

Do you have the V7\'s computer? If so run that. I think you\'d be bonkers to try and rewire/convert to run on an old loom/manifold etc.

Yeah jus brought the engine have the v7 ecu and loom do will run with that if not to much problems any one know were I can get it wired up in Auckland?

[boon]

 Mad rs']

[quote name='boon said:

Do you have the V7\'s computer? If so run that. I think you\'d be bonkers to try and rewire/convert to run on an old loom/manifold etc.

/quote]

Yeah jus brought the engine have the v7 ecu and loom do will run with that if not to much problems any one know were I can get it wired up in Auckland?

There won\'t be much to wire up. You could probably do it yourself if you know which end of a soldering iron you hold and what a multimeter does.

[Mad rs]

 soopersubaru said:

You should be able to do this straight swap without messing with too much. However the engine loom/intake manifold/idle control is different and this is where issues will occur. If you change the engine loom you will possibly be able to start it, However idle cannot be controlled as the system is stepper motor on V7 not induction coil. If you fit the RS manifold to the V7 engine (drilling or adapter required) it will run ok, But tuning will be out of kilter therefore an aftermarket ecu will be needed. So save your coin buy a link or similar then you can do it correctly and you will have a reliable ride. Thats what I did on my 91 anyway.

So if I use the v7 ecu it won\'t run the idle controler ??

[boon]

If you use the V7 ECU with the RS manifold and old-style IACV then it won\'t work.

If you keep the V7 motor intact, and use the manifold with the ECU etc, it will work fine.

[Mad rs]

 boon said:

If you use the V7 ECU with the RS manifold and old-style IACV then it won\'t work.

If you keep the V7 motor intact, and use the manifold with the ECU etc, it will work fine.

Sweet that\'s the plan then thanks

[soopersubaru]

 boon said:

If you use the V7 ECU with the RS manifold and old-style IACV then it won\'t work.

If you keep the V7 motor intact, and use the manifold with the ECU etc, it will work fine.

So the V7 engine loom will be ok connected to the 91 rs loom? ,And the V7 ecu will plug into the 91 loom as well?...Was not aware that this could be done.

[boon]

 soopersubaru']

[quote name='boon said:

If you use the V7 ECU with the RS manifold and old-style IACV then it won\'t work.

If you keep the V7 motor intact, and use the manifold with the ECU etc, it will work fine.

/quote]

So the V7 engine loom will be ok connected to the 91 rs loom? ,And the V7 ecu will plug into the 91 loom as well?...Was not aware that this could be done.

No, there will be some cut and solder work to be done.

But I\'d rather change a couple of wires in the footwell instead of fecking around with the manifold swap.

[Pappu1]

If u have full v7 loom then just run that as its just a Lot easier

If u don\'t have loom then start soldering and chopping

[F.F.Sltd]

So I take it you have done this boon as you are sayin its only a few wires.

1st you need to run v7 half loom through engine.

2nd remove all un needed wiring from both looms

3rd sort main relay fuel pump

4th wire up fp controller

5th run obd2 and flashing plug

6 sort how how you are going to tell computer that you have no electronic speedo

7 fit engine turn rear o2 cel off.

It is bout 16-18hrs to do wiring correctly.

Also no part from the rs engine loom of ecu is interchangeable

[soopersubaru]

 boon']

[quote name='boon said:

If you use the V7 ECU with the RS manifold and old-style IACV then it won\'t work.

If you keep the V7 motor intact, and use the manifold with the ECU etc, it will work fine.

/quote]

So the V7 engine loom will be ok connected to the 91 rs loom? ,And the V7 ecu will plug into the 91 loom as well?...Was not aware that this could be done.

No, there will be some cut and solder work to be done.

But I\'d rather change a couple of wires in the footwell instead of fecking around with the manifold swap.

Ok....Here is what i did. Used the engine loom for a 91 installed on the V7 manifold/engine.Single bolt ignition coils fitted. Then the only wiring alteration was for the TPS. (it moves the other way,plug is different to) Also removed the idle control from the throttle body.

Installed a link G4 plug in. This allowed easy retune as required and also negated the idle control requirement.

Simple as that.

Does that clarify "how too"?

[boon]

Now do it without adding a Link. Thats like $3k on top.

[soopersubaru]

 boon said:

Now do it without adding a Link. Thats like $3k on top.

Ah yes that be true!...However one should. "Do it once do it right"...Just a bit of patience whilst one saves the dough really.

Rewiring a car could lead to all sorts of angst. Not to mention hours etc,etc.

Just information not having a dig at anyone\'s method of overcoming an upgrade engine installation.

[soopersubaru]

Here is the answer to your issue. Total tuneability that you will not regret Be Quick!!... http://www.clubsub.org.nz/forum/index.php/topic,41349.msg527327.html#msg527327