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Dicko · Alfasud Joined: 17 Jan 2004 Posts: 49 Location: Sydney

Hi all, happy motoring.

Im seeking advice about my Alfa...

I have a 1.5 Ltr series one 33 ( 1986) and am trying to decide if I should fit a new custom pipe or standard 16v exhaust (mid and back box).

Has any one got experience fitting a 2 inch standard 16v pipe to an older series one body???? Is it a bolt on job (except the difference in width?

This would save me a few hundred from getting a custom 2 inch done.

My car has matched porting, compression ratio increse, different cams and ansa crossover manifold (which would have to be cut a little short to fit 2 inch.

Thanks
RIch
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Too Many!! 33 QV 1.5 1986 (day driver, Sud 1.5 82 (toy) and Sud Ti Qv 84 (on hold), 1988 1.7 carbie too (wobly).

Serpent33 · Posted: Fri Jul 08, 2005 5:06 pm Post subject:

Hi, I have cut the end of the standard 8V extrator and replaced with 2 inch section, So that it joins the 16v centre pipe perfectly(which is 2 inch straight through). Worked well. Do source for the 1.7 extractor that have a larger diammeter to begin with, which was what I did. And yes, I saved a lot.
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Each time I speed I say, "Dear lord, make me fast and accurate..."

johnboy · Posted: Fri Jul 08, 2005 8:05 pm Post subject:

Hi there
serpent33 is right get the 1.7 manifold should help, we all need MORE POWER! some more than other's Wink

regards john
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WODA WE NEED? MORE POWER!!

Alfa gt jtdm blackline
1990 S2 16v veloce sleeping!
2002 ts gtv the wifes now
1997 seadoo gsx 800
1999 freestyle superjet

Ben_nz · Posted: Sat Jul 09, 2005 12:30 am Post subject:

But the 1.7 manifold would be a downgrade from the crossover manifold he already has. Confused

Serpent33 · Posted: Mon Jul 11, 2005 12:41 am Post subject:

Er.. I think I have seen the factory cross over extractors. The diameters are way too small. Tune length headers are mapped good for only a certain rpm range. Most importantly the size should support the output. For our case 1.7 is a leap from the smaller cc and I would think size matters more than tuned length. I have discarded my devil tuned length headers due to a few dents (4-1) and also due to the small diameter. There are reccommended diameters to match power output. That is why you see pipe sizes go up relatively with power.
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Each time I speed I say, "Dear lord, make me fast and accurate..."