GT/G40 exhausts..

dub envy · Post by **dub envy** » Sat Aug 23, 2003 9:19 pm

Are they the same?

KarlM · Post by **KarlM** » Sat Aug 23, 2003 10:08 pm

not 100% sure but i would say NO because the manifolds are different

polo2k · Post by **polo2k** » Sun Aug 24, 2003 11:43 am

can we get an engine code for both and ill check

hardhitter · Post by **hardhitter** » Sun Aug 24, 2003 12:54 pm

They are different. The G40 manifold has a bracket for the charger on it, it also has a slightly bigger bore too. The G40 downpipe has a slightly larger bore as does the exhaust system.

A few people have put G40 exhaust manifolds & systems on a GT before, should see some gains. The only problem is they aint cheap to buy new.

Engine codes:

GT- 3F
G40- PY

polo2k · Post by **polo2k** » Sun Aug 24, 2003 1:40 pm

ok just looking at the down pipe the part is interchangeable but the g40 uses a long life version

dub envy · Post by **dub envy** » Sun Aug 24, 2003 3:21 pm

so basically, i need an exhaust.

i plan in the near future to start looking for a g40 engine.

when i get said engine my new de-cat downpipe will be useless..

i dont know what to do.

sod it. i'll just buy the stainless zorst, and then i'll have to sell it when i get the g40. i'm sure that a complete GT engine, de-cat, and stainless exhaust will be pretty easy to sell.....

hardhitter · Post by **hardhitter** » Sun Aug 24, 2003 10:04 pm

What exhaust are you thinking of getting ? If you get a custom, ask them to use 2" or 2 1/4" tubing for the system, which they will probably do anyway. That would be fine on a G too.

The systems can be swapped between the two, G40 system will fit GT and visa versa. You wouldnt need to sell it.

dub envy · Post by **dub envy** » Tue Aug 26, 2003 12:32 am

how would i go about fitting the larger bore g40 exhaust to the smaller gt downpipe?? shims?

poloace · Post by **poloace** » Fri Aug 29, 2003 3:49 am

G40 back box +Mid section are the same as a GT (Unless the GT I broke fo rmy MK2 conversion had a G40 exhaust) However manifolds and downpipes with cat are different the 2 down pipe bits are a lot bigger bore. My centre section broke on my G and I was able to use the one I had in my garage from the GT as a straight swap. The G40 was quite restricted by VAG and a noticable power gain is acheived with a performance exhaust.

hardhitter · Post by **hardhitter** » Sat Aug 30, 2003 1:11 pm

dub envy wrote:how would i go about fitting the larger bore g40 exhaust to the smaller gt downpipe?? shims?

The downpipe to centre section join is pretty much the same for the GT and G40 in diameter. I think the difference in bore is at the manifold end where its two pipes.

dub envy · Post by **dub envy** » Sat Aug 30, 2003 1:45 pm

ok. so gt/g40 systems are the same.

I can order a GT one with piece of mind

hardhitter · Post by **hardhitter** » Sun Aug 31, 2003 6:36 pm

What kind of system are you getting ?

dub envy · Post by **dub envy** » Sun Aug 31, 2003 6:45 pm

I want to order one from that company at the Polo Show.. But I can't find their flyer, and can't remember their web address... I have searched on the net, but cant seem to find them... I think it was something like www.performanceexhausts.com ????? not too sure on the make now either, but am sure it was Motec...

Oh well... I want a full stainless system, with no middle silencer and a boxer (letterbox) style tip..

I think that should look and sound ok..

hardhitter · Post by **hardhitter** » Sun Aug 31, 2003 7:39 pm

Motex, do you mean.
http://www.sportexhausts.com/index.html

Should be good, they looked good quality. What will you do about hanging brakets, make your own ?

polo2k · Post by **polo2k** » Sun Aug 31, 2003 10:56 pm

thats the one