Advice Needed

[hudson 10]

I'm just on with having a brand new car built for rallying and have ordered a maniflow works type manifold for the GTI6 engine but was told upon ordering that the tunnel needs modification could anyone give me some advice or pictures on the correct modification needed to the tunnel to allow this to be fit as my engine will be a while before it is ready for collection and I was hoping to get the shell finished and painted and suspension ect fit whilst waiting for the engine and gearbox.

[welshpug 1,657]

I would take the car to someone and have it built on the car.

[hudson 10]

Yes but in doing that I'm going to struggle to have the engine dynoed as I need an exhaust manifold to have it run in the set up so it's a bit of a catch twenty two

[welshpug 1,657]

build engine, fit engine, take it to get exhaust made, go to RR.

Edited April 17, 2014 by welshpug

[hudson 10]

The engine is being built professionally and like most engine builders I have seen they tend to run them up in an engine room or at least this is what this one is doing.

[welshpug 1,657]

In that case one would assume they will already have an exhaust manifold to suit it if they are well versed in XU 16v engines.

[hudson 10]

If you read the title it's says advice not argument thanks for your advice though most helpful

[welshpug 1,657]

Pardon?!

[Tom Fenton 1,541]

How about install the manifold on a dummy engine so you can offer it into the shell to sort clearance? Thats what I'd do if you are worried about getting the clearance right. All you really need is a bare block head gearbox and some mounts to be able to mock it up? And then as a bonus your engine can be run up with the manifold it will use in the car.

[aldworth33 45 1 Cars]

If it's the proper 205 gti6 conversion manifold it should fit, mines got a 4-2-1 that clears everything easily. It's a bit stupid of them selling an exhaust that to be fitted you need to modify the car, surely they could modify the exhaust to suit the car. I'm unsure of the make of mine I'll have a look through the invoices I have

[Tom Fenton 1,541]

If it's the proper 205 gti6 conversion manifold it should fit, mines got a 4-2-1 that clears everything easily. It's a bit stupid of them selling an exhaust that to be fitted you need to modify the car, surely they could modify the exhaust to suit the car. I'm unsure of the make of mine I'll have a look through the invoices I have

A conversion manifold that fits into the space is just that. A manifold with precise tuned lengths for 100% performance will not have packaging high on the list of priorities. A serious race rally car engine will have clearance made as needed, rather than the other way around which is doing the best you can in the space there is.

[Miles 331 1 Cars]

It really depends which one you have ordered, But if they know the tunnel needs to be modded they should know what needs doing so I'd ask them, if they don;t then it's slightly odd as they must have fitted one to a car to offer it for sale

[hudson 10]

The guy said the exhaust was developed with Richard long man and would require slight modification to the tunnel to allow clearance but was unsure of what it would this would consist of probably going to go down the route of dry fitting a dummy engine and see how it fits he said they did two types I opted for the works type