mk3 vr6 into mk4?

[jnrm3]

Hey all, I have been on the look out for damaged golfs for a engine conversion and came across a 96 vr6 which is going through the auction next week.

I have done a few engine conversions before on subaru's but never a vw, so I have a question about the chassis.

Are the chassis similar/same to replace the hole sub frame(motor, box, brakes) from the mk3 to the mk4?

has anyone engineered a conversion like this before? i no there are certain requirements with emissions and i will have to speak with the engineer during the week.

any info would be good.

cheers
steve

[99gti]

Dependant on state laws, I didn't think you were allowed to put an older engine into a newer car?

[Tim]

why would you bother when you can buy one already done from the factory!

http://www.uniquecarsales.com.au/pls/carsales/!unique_content.enquiry?current_rec=2&page_number=1&vehicle_id=5057732&total_rec=78&sort_type=1&keywords=VW

[GoLfMan]

Dependant on state laws, I didn't think you were allowed to put an older engine into a newer car?

true, but the emissions laws changed in 97 and i think you can put in a 97 model VR6 into a leter model car as it complies to the newer emissions laws...

good luck trying to find a 97 model VR, let alone a wrecked one!
try finding a Bora V6 4 motion and slot that in its a DOHC VR engine and it has more power!

[Mrk_Mickey]

Mk4's came with VR6 engines in them in other countries anyway..mk4 Golf GTI VR6 or whatever anyone wants to call it, had a 12v VR6 engine with only very slight differences to the engine, and a big engine cover to conceal it.

[madglf3]

I thought that the mk4 vr6 was a 24v, I think I heard it on the 'Tex one time?

[Tim]

I thought that the mk4 vr6 was a 24v, I think I heard it on the 'Tex one time?

it probly is a 24v but technically the 24v is a better engine anyways. Just dont tell any of the mk3 boys i said that

[h100vw]

As attractive as the idea sounds, I wouldn't be putting a 10 year old motor in a newer car. I reckon it's fraught with danger.

Getting immobilisers to function, making the rev counter work. Tons of other issues spring to mind like connecting to the fuse box, will the accessories like AC run smoothly?

It would seem like a rod for your back. Not that it can't be done but would you want to?

Dropping the VR into a 1.6 MK3 with all the VR running gear would be a different proposition.

Gavin

[Valver.]

it probly is a 24v but technically the 24v is a better engine anyways. Just dont tell any of the mk3 boys i said that

The early US-spec only Mk4 VR6s were 12v engines and converted later to 24v as per UK etc.

Just for reference, Josh, all of them are DOHC in a single head - the angle of the cylinders is too small to have 2 separate heads and thus a quad cam overall layout.

You'd have to be on very bad drugs to put a 12v VR6 into a Mk4. A basic Mk4 GTI with a reflash would blow your doors clean off

[h100vw]

You'd have to be on very bad drugs to put a 12v VR6 into a Mk4.

LOL, I wanted to say something like that but managed not too!

Gavin

[GoLfMan]

The early US-spec only Mk4 VR6s were Just for reference, Josh, all of them are DOHC in a single head - the angle of the cylinders is too small to have 2 separate heads and thus a quad cam overall layout.

yeh cheers for that Stu, i was under the disillusion that they had crammed 4 cams into the VR head bit of a tight squeeze dont you think? The R32/36 motor has the same 15 degree angle, is this also a two cam arrangement aswell? (sorry to go off topic!)

i love the VR motor, as long as it has a turbo

[Golf Loon]

Any engine swop in a Mk4 is fraught with difficulty. The only one I would consider was if you had a real nice 1.6 that you wanted to put a V5 or something in that came from a Mk4 / Bora chassis.

Then I`d want the whole donor car and would swop every loom over in front of the fusebox. You`d need the ecu, key and column from the donor car to make it work.

I have all these parts from a wrecked V5 and would have put em all in an Ibiza if it was that easy. Its all here if someone feels the uge for a V5 Mk4.

[Valver.]

yeh cheers for that Stu, i was under the disillusion that they had crammed 4 cams into the VR head bit of a tight squeeze dont you think? The R32/36 motor has the same 15 degree angle, is this also a two cam arrangement aswell? (sorry to go off topic!)

i love the VR motor, as long as it has a turbo

Yep, still a twin cam head - only major difference being the direct injection into the combustion chambers for the FSI as far as I'm aware

[Oneofthegreats]

Just to clear somthing up.

If you do it by the book & legally, you can't put an older engine into a newer car at all under ADR's & engineer's.

Eg., you can't fit a VN 5L into a VS 5L, you can't fit a HK engine into a HG etc.

You can't fit a 86 KR 16V into a 88 model.

But this is only if you do it by the book.

Why would you fit a VR6 into a Mk4 anyway.

It's already been stated that a lightly tuned 20VT will pump a VR6!

Also, if you planned on 4 motion gear, you will need a the entire Bora to cut the floor out to fit a AWD stuff. Waist of time.

If you want a VR6 in a mk4, buy a bora!

[Mrk_Mickey]

....Or an R32
*keeps dreaming*