GTi Exhaust photos attached

[Sir Chad]

Got a request to see pics of exhaust, so here they are:


view from back/nearside



view from rear looking up from the ground

[curtis_caddy]

have been mulling over a gti conversion, how do you rate it against the waterboxer, did you use an 1800 or 2 litre motor, are there any problems doing it, have heard you have to mod the fuel tank with a swirl pot, any comments apreciated.

[bmouthboyo]

Looks sweet, just what im after.

Do you have a link to more high res pics of them?

Thanks

[Technohippy]

Sorry to butt in...

have been mulling over a gti conversion, how do you rate it against the waterboxer

my 1.9 wbx never got up to a ton... ever... not even down hill... my 1.8 gti does, and moreover its less chuggy and more carlike through the gears

did you use an 1800 or 2 litre motor, are there any problems doing it, have heard you have to mod the fuel tank with a swirl pot, any comments apreciated.

Yes you get fuel surging without a swirl pot, and even with one fitted I was still getting some surge at around half full but fitted a static lift pump to it as well and its smoothed everything out nicely:)

[Sir Chad]

Wot technohippy said
a 1.8 GTi has 105hp the original WBX was something like 60hp, you get a better mpg too.
I swapped mine cos I didn't want to fork out a fortune on a replacement WBX, did all the work myself except for the exhaust connection pipe.
Anyone considering the conversion should read the wiki and trawl through this forum.
The wiring loom is a bit of a pig, VW put a few surplus wires in which go nowhere, split the loom and you'll find them.
I had to cut and weld the chassis to get the engine in, no lump hammer would ever make enough room for the 87 1.8GTi I used.
I didn't use a swirl pot, I used the GTi fuel pump and eventually I fitted a facet pump as a lift pump and I also fitted a modified parker non-return valve (fitted with a stronger spring)to the tank return, this keeps the main pump slightly pressured and makes it run silent.

[Technohippy]

EEEK! shouldn't have to do that do that???
DX code 1.8 Gti engine is the same block as the JX code TD in a T25... used all the bits off a TD with the engine and the only bit of persuading mine needed was a bit of a pummel at the "inner wing" inside the engine bay to get the air intake manifold to fit

[Sir Chad]

I believe some of the inlet manifolds are bigger than others, which is why some people have to cut and weld the chassis and some getaway with hitting it hard with a hammer.
forgot to say 2.0 litre GTi can be used but you have to either use or get around the ECU immobiliser.

[Technohippy]

as this is an exhaust pictrure thread here's mine (also posted in bmouthboyo's thread in tech)



mixture of MK1 bits and a TD Transporter back box

[bmouthboyo]

I really want one looking like that asap lol

What silencer did you use? That connection looks handy just before it.

My problem is I cant move my bus without the exhaust so cannot take it to a fabricators. Consider buying / renting a MIG welder and giving it a go, nothing to loose.

Do you have to bend any pipes? cause I wouldn't have the heating equipment for that.

[bmouthboyo]

I really want one looking like that asap lol

What silencer did you use? That connection looks handy just before it.

My problem is I cant move my bus without the exhaust so cannot take it to a fabricators. Consider buying / renting a MIG welder and giving it a go, nothing to loose.

Do you have to bend any pipes? cause I wouldn't have the heating equipment for that.

[Technohippy]

its all cut out of the mk1 downpipe no bending just a bit of filleting...

the connection is the flange cut off the other end of the TD backbox tailpipe and used that end on the "downpipe"

I don't weld so I don't know how tricky it was to do

[curtis_caddy]

Glad i butted in on this thread now, sorry bout that, have put another wbx in the panel for now, but have all the diesel parts here to mount a gti motor. Have read that there is a variation in size of the inlet manifolds, see that you mention a dx code technohippy, is this the one you used, what year golf do i need to look for?, is it best to go for a pre ecu engine to keep it simple, would the use of a vw 2.1 injection tank get round the swirl pot issues, is anyone in the cambs area so i could take a look at what needs to be done?

[Sir Chad]

I would go for a 1.8 digifant. It's a very simple system and very easy to maintain. I ran with the injection pump alone for a couple of years with no problems. I only put a priming pump on because the golfs all had lift pumps in their tanks so I thought it would be good to mimic this - for reliability and durability. This thread is the only one I've seen that refers to swirl pots. The golf pump has an accumulator which I believe serves the same function as a swirl pot.

[Echo Beach]

I could be wrong (and according to my wife its a 99% certainty) reading between the lines we have two different installs here. Technohippy's is a K-jet set up (mechanical fuel inj) from a Mk1 or early Mk2 gti and i think Sir Chads is the later digifant (efi) set-up. I suppose its what installation you feel more comfortable with and what is available to you. Obviously a running donor car would be a bonus for pumps etc

[Echo Beach]

You beat me to it I think andy maybe right with the injection tank though as i thought i had read it had a bigger outlet and combining it with the 2.1inj pump it should be man enough for the job. If and when i do mine this is what i'll use as i have the 1.9wbx inj engine in mine already and err, well its already there