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#15
by
8v-of-fury
on 24 Jan, 2010 13:53
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Back pressure is nessary on gassers but not Diesels. The better the Diesel breaths, the better she runs.
But does that apply to non turbo's ?
Yes sir! the fact that diesels do not need back pressure and gassers do, is soley based on the fact that gas engines have valve overlap because of cam design. because of the tight tolerances of these diesels there is no overlap.. therefore no need for back pressure.
Obviously it would be impossible to have 0 back pressure on a normal car unless you are running just the manifold.. but the less there is on a diesel the better. A turbo diesel will have just as much backpressure straight piped.. as an N/a would have with a single normal muffler on it.
either way it is probably 12% of what was there stock
rip that old exhaust off.. 2.5" and a Turbo muffler outback! will be very UN restrictive.
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#16
by
macka
on 24 Jan, 2010 14:05
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I have 3 inch SS at home waiting to be made up. Its gonna be much better.
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#17
by
rabbitman
on 24 Jan, 2010 14:12
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Back pressure isn't the deal, it's velocity that you want so the outgoing gasses sorta suck the incoming air into the cylinder right before the ex valve closes. No good unless you have some valve overlap.
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#18
by
8v-of-fury
on 24 Jan, 2010 15:55
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rabbitman you just described Back-Pressure with different words. lol
I concur
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#19
by
Rabbit on Roids
on 25 Jan, 2010 07:24
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diesels dont need pack pressure. its just making the exhaust leave the engine a little harder. we already have 24:1 compression, we dont need back pressure too...
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#20
by
1oldcj
on 25 Jan, 2010 08:27
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What's the best exhaust I can put on my 92 1.6l n/a ?
I have an all stock system and want her to breath better!
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#21
by
veector
on 25 Jan, 2010 08:38
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I remember reading somewhere that 8v gasser manifolds fit but not sure about the advantage
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#22
by
Rabbit on Roids
on 25 Jan, 2010 09:03
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3" straight pipe is the best exhaust to run on your 1.6 td. no muffler, no restrictions.
as for the gasser intake manifold, it fits, but it takes a bit more than bolting it on to get it to fit.you have to have a low mounted turbo, so it sits closer to the block and axle. otherwise the gasser manifold hits the turbo.
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#23
by
GEE-BEE
on 25 Jan, 2010 09:03
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2.25 OR 2.5 Diameter
I would go S/S up there..
techtonicstuning.com
Gee-Bee
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#24
by
Rabbit on Roids
on 25 Jan, 2010 09:09
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2.25 OR 2.5 Diameter
I would go S/S up there..
techtonicstuning.com
Gee-Bee
techtonics is expensive...
a local exhaust shop could do just as good of a job, for probably half the price.
and hes gonna make a 3" down pipe, so why go 2.5 after the 3" DP? thats just stupid...
and the fact that he was asking for the best performing exhaust for a diesel vw. techtonics exhaust systems work alright, but they dont make a 3" system, and i dont they sell an exhaust system without a muffler. and he probably doesnt wanna spend his left nut on an exhaust system. he has a turbo, thats enough muffler.
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#25
by
GEE-BEE
on 25 Jan, 2010 10:44
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They will build it with or without a muffler
I paid 315.00 for s/s 2.5 DP
300.00 for 2.5 Complete exhaust
Is that expensive ?
Mine's perfect,like everything else I do....
You get what you pay for ....
I do agree 3' would be nice but I think I would have a little clearance issue on my caddy
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#26
by
Rabbit on Roids
on 25 Jan, 2010 11:12
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615 bucks is expensive for a single pipe exhaust, yes. i personally would never spend that much for exhaust on ANY vw, not even a BRAND NEW one...
my buddy had a custom full dual exhaust put on his V8 s-10 for under 250 bucks. and that was with the cost of the flowmasters and everything. and the guy that did it, did a damn good job doing it. it wasnt stainless tho, but most people dont care if its stainless or not.
and that sounds a little snobby/egotistical saying that EVERYTHING you do is perfect..
there is no such thing as perfect, so go figure. there are only people who think "perfect" exists.
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#27
by
veector
on 26 Jan, 2010 07:00
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the TT option is indeed a pricy one as the exhaust guy quoted me less than half of that for about the same thing. Im just saving up a bit of cash and the car will be dropped of for some work sooon
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#28
by
dieselsmoke
on 26 Jan, 2010 07:01
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Veector
I am running the same setup as you are but I am running at 15 psi of boost. Do you have an intercooler on yours or an egt gauge when running at 18-20 psi?
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#29
by
GEE-BEE
on 26 Jan, 2010 07:40
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So you wouldn't buy A full Ti exhaust if you had the money ?
I don't have time to make my own, I would rather pay a professional to get what I want, I was very happy with techtonics.
I sent them three different turbos and manifolds so they would have the pattern for others
I think some exhaust systems are a work of art.
Some exhaust systems for the Turbo 997 Porsche are over 6K without headers or Tip's
I mfg a strap seal for different exhaust mfg's for the muffler straps.
GB