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View Full Version : 4 to 2 exhaust manifolds and downpipes


jimbob-mcgrew
24-01-13, 11:48 PM
would you guys say the 4-2, gte/gsi manifold is any better than the 4-2, 1.3 or 1.4. they all look very similar in design ?

and the 2-1 downpipe on the 1.3's are the shortest of the bunch, the 1.4 a little longer, the gte/gsi the longest, but again, all fairly similar design.

what say you ?
Novasport
24-01-13, 11:52 PM
14NV is a nice design, E16SE is also good.
Novasport
24-01-13, 11:55 PM
14NV compared to a Janspeed 4-2-1

http://img.photobucket.com/albums/v305/NovaSport/IMG-20120630-00344.jpg
http://img.photobucket.com/albums/v305/NovaSport/IMG-20120630-00343.jpg
Balley
25-01-13, 12:00 AM
The janspeed looks much better, although a gte system is wider and better than the NV system.
Novasport
25-01-13, 12:12 AM
I went for an NV so it would mate up to a 1.3/1.4 Magnex. I think the 1.6 routes/mounts differently.
jimbob-mcgrew
25-01-13, 12:23 AM
cheers for the pics novasport.

i heard that too, about the mounting. does the gte/gsi have different mount points on the chassis ?

would be cool if anyone else has a shot or 2 of a gte manifold / downpipe :)
phazer
25-01-13, 06:20 PM
The only difference I've seen between GTE and the Cat equipped GSi & SRi is the bracket to the floor pan on the downpipe (to help with the weight), you can see the same on Rich's pics above. Manifold and down pipe are the same length and terminate in the same place and then have sprung bolts to connect to centre section (GTE) or Cat (GSi/SRi).
Edd
25-01-13, 06:34 PM
GTE non cat exhausts do not line up the same as 1.3/1.4's at the join between downpipe and the system, been there and had the problems lol
Novasport
25-01-13, 06:39 PM
Yes, I was sure they were routed differently aswell.
Adam
25-01-13, 07:11 PM
1.3/1.4 has a straight fit where it joins the centre section.
GTE/GSI joins at an angle.
phazer
25-01-13, 11:01 PM
GTE non cat exhausts do not line up the same as 1.3/1.4's at the join between downpipe and the system, been there and had the problems lol

The guy wanted a picture of a GTE downpipe. My comments were that it was the same as the GSi without the cat bracket. Don't see any reference in my post to the 1.3/1.4 :roll:
Novasport
26-01-13, 09:03 AM
Looking at Jimbob's starting post, he is looking for an exhaust for a 1.3 or 1.4. If he is running with an exhaust system originally designed for one of those systems then a GTE manifold and downpipe may not fit.
Edd is just pointing that out so he does not waste his money buying something that wont fit. Just friendly advice imo.
phazer
26-01-13, 10:48 AM
Oh FFS seriously put the ****ing handbags down eh?
mowgli
26-01-13, 10:55 AM
unless the engine is seriously modified, the std 1.3/1.4 exhaust with a good back box is pretty good. the astra/nova challenge racers used to cut the 2-1 joint open to tidy it up as they reckoned it was worth 2-3hp.
the std gte is the same diameter as the 1.3/1.4 system, and it is definitely longer between the 4-2 & the 2-1 than the 1.3/1.4, and some of the 2-1 joint sections i have seen on the gte one look a lot worse than the 1.3 type.
Novasport
26-01-13, 11:50 AM
Oh FFS seriously put the ****ing handbags down eh?

I wasn't getting shirty mate, just pointing out what the lad was looking for. You were swinging the bag after Edd's reply which I thought was unecessary.
jimbob-mcgrew
28-01-13, 08:10 PM
Oh FFS seriously put the ****ing handbags down eh?

lol

cheers for the info guys. ive got something in mind from what said :thumb:
Novasport
28-01-13, 08:15 PM
What you going with?
jimbob-mcgrew
29-01-13, 01:05 AM
What you going with?

i think a complete 1.4 system is about as good as i can go... if the gte downpipes too long for the channelling in the shell...
i forgot to mention this is a for a 5 door too, so might complicate things slightly.
i know that any aftermarket system will prob be better, but i want to keep it semi-sleeper in GM clothes, plus im not massively keen on exhaust roar.
i just wanted something that could handle 100 horse
jimbob-mcgrew
29-01-13, 01:15 AM
i have a 1.3 manifold already. looks like the 1.4 manifolds different tho, a slight twist, and more meat on it ?
Novasport
29-01-13, 02:44 PM
If you have a 1.3 manifold already I would go with that as the 14NV manifolds and downpipes are getting hard to find.
I could not get a non genuine downpipe for my 14NV manifold and it took ages to find a genuine one.
mowgli
29-01-13, 02:48 PM
i think a complete 1.4 system is about as good as i can go... if the gte downpipes too long for the channelling in the shell...
i forgot to mention this is a for a 5 door too, so might complicate things slightly.
i know that any aftermarket system will prob be better, but i want to keep it semi-sleeper in GM clothes, plus im not massively keen on exhaust roar.
i just wanted something that could handle 100 horse

any bog std nova 4-2-1 exhaust will cope with 100hp.

the gte one should fit the 5door shell, as it fits my (originally) 1.0 3dr shell without any bother.