GolfGTIforum.co.uk

Model specific boards => Golf mk2 => Topic started by: Oilburner on 29 January 2009, 22:59

Title: Exhast manifold/down pipe
Post by: Oilburner on 29 January 2009, 22:59

More help needed i am afraid  :cry: I did have a look on search and in faq for this one, but cant see anything!!?

Sooo, whilst removing my heater matrix today (horrid :angry:) I was checking out the manifold and down pipe. I have gases coming up in to the engine bay when starting from cold which go once the engine is up to temp which I am assuming is the gasket, there is also a serious blow from the down pipe to centre pipe connection, the result of an awsome hash job by the cars previous owner taking it to ATS, is being held by 2 U clamps on either side of the joint and loads of sealant!!!

Said previous owner came round today to laugh at me trying to do the matrix and we were talking about the boge job and the manifold. He then decides to mention that the 'bloke' at ATS said the reason the joint was not sealing was because it was a 16v manifold, which is apparently shorter than the 8v (like mine) so the centre section is to short to connect up...

So is the 16v manifold shorter? will it fit on the 8v? I cant realy see there would be any difference bettween them... or am I being stupid?? :laugh:

Cheers

 

Title: Re: Exhast manifold/down pipe
Post by: rubjonny on 30 January 2009, 10:47

He will have meant the downpipe, manifold is completly different fitment. its not shorter, its a bigger bore.  this would explain the need to bodge it so very badly to make it fit.

Title: Re: Exhast manifold/down pipe
Post by: Oilburner on 30 January 2009, 14:00

hmm ok that makes sense!!

Thanks; I will have to have a closer look...

Next problem is Haynes says a special tool is required for the clips on the Manifold to down pipe connection? there must be a way round this?

cheers

Title: Re: Exhast manifold/down pipe
Post by: rubjonny on 30 January 2009, 16:02

thats for the carby/early 8v GTI ones, if you really do have a 16v downpipe its got 6 bo0lts holding it on!

Title: Re: Exhast manifold/down pipe
Post by: Oilburner on 30 January 2009, 16:53

So its all good news then!! excellent, about time i had some of that!!  :cool:

Title: Re: Exhast manifold/down pipe
Post by: DOA on 30 January 2009, 17:21

I wont warn you that you have to take the subframe off to get the downpipe and manifold off then  :evil: :rolleyes:

Title: Re: Exhast manifold/down pipe
Post by: Oilburner on 31 January 2009, 00:20

Quote from: DOA on 30 January 2009, 17:21

I wont warn you that you have to take the subframe off to get the downpipe and manifold off then  :evil: :rolleyes:

WTF???

I bloody well hope not?  :cry:

Title: Re: Exhast manifold/down pipe
Post by: oakgreengolf on 31 January 2009, 09:18

If you can get the car in the air or if you have a pit it will twist out between the rack and the tunnel. You will need to undo the 3 bolts holding the gear stick thingy onto the rack and push this to one side. Its very tight!!

Title: Re: Exhast manifold/down pipe
Post by: rubjonny on 31 January 2009, 10:37

if you undo the rack and push it forward that would help, but droppin the subby would be easier.

what it might be is a 16v zaust fitted on an 8v, that could also explain the problem.  you can tell if its a 16v downpipe simply by looking at it, if it has a big round box on it then its 16v, if not its 8v (or a modded 16v :grin:)

heres an early 8v gti/carb 'toilet bowl' downpipe:
http://cgi.ebay.co.uk/VW-Golf-Mk2-GTi-Exhaust-downpipe-manifold-pipe-NEW_W0QQitemZ320325848226

late 8v gti looks liek the above but it has a 6 nut flange, and a 16v one looks like an 8v one but with a big round box just before the end :)

Title: Re: Exhast manifold/down pipe
Post by: sidecarphil on 31 January 2009, 15:43

mine was blowing from the joint under the car ,

costs over 250 euros :O

because my car should have a cat  :angry:

SO cunning plan , fit a second hand 4 branch , 100 euros

(will be for sale soon as i'm changing to a VR6 engine )

Title: Re: Exhast manifold/down pipe
Post by: Oilburner on 02 February 2009, 11:23

Quote from: rubjonny on 31 January 2009, 10:37

if you undo the rack and push it forward that would help, but droppin the subby would be easier.

what it might be is a 16v zaust fitted on an 8v, that could also explain the problem.  you can tell if its a 16v downpipe simply by looking at it, if it has a big round box on it then its 16v, if not its 8v (or a modded 16v :grin:)

heres an early 8v gti/carb 'toilet bowl' downpipe:
http://cgi.ebay.co.uk/VW-Golf-Mk2-GTi-Exhaust-downpipe-manifold-pipe-NEW_W0QQitemZ320325848226

late 8v gti looks liek the above but it has a 6 nut flange, and a 16v one looks like an 8v one but with a big round box just before the end :)

Have had a proper good look at whats going on now... It is a 16v system on to an 8v downpipe, hence the bodge! Its a Supersprint centre and rear section and original downpipe and manifold.

Seems a shame to rip of the 16v bits (which are in good nick) and replace. Is it not possible to get an adapter of some description to reduce the bore to the correct size for the downpipe?

If not it looks like i will have a 16v system for sale  :undecided:

Title: Re: Exhast manifold/down pipe
Post by: danny_p on 02 February 2009, 16:09

you can buy  adaptor sleves that you clamp in,

Title: Re: Exhast manifold/down pipe
Post by: rubjonny on 03 February 2009, 09:59

yeah what you need is a 2" -> 2.25" adaptor.  if yoyu can find one miltec front silencer for an 8v is 2." at the front and 2.25" at the back, or at least the one my mate bought was.  Basically the rear silencer & back box are the same on the 8v and 16v systems, they just supply a different front one to reduce the bore.

Title: Re: Exhast manifold/down pipe
Post by: Oilburner on 03 February 2009, 22:20

Thanks for the help!

Got Saturday earmarked for getting it off and seeing what i can sort  :wink:  that is If it ever stops bloody snowing.....