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final exhaust leak question
Posted by: evan1242
Date: January 02, 2009 10:18PM

car = 1983 280ZXT

it has an exhaust leak on the # 6 cylinder by the manifold.

will this affect the cars performance since it is a Turbo?

Marietta GA
1983 280 ZX Turbo @ 10 psi
Lone Wolf Performance intake manifold and throttle body
Taylor High Pro Wires
Greddy Type RZ BOV
Tokico Shocks/Lowering Springs/bushings from MSA
2.5 inch straight pipes
248,XXX miles
[www.zcar.com]

1991 240sx (s13) sr20det swap at 12 psi (about to be 20-22 when i get some bigger injectors)
full skunk2 drift suspension
full Megan racing exhaust
Greddy RZ Blow off valve
JDM sport intercooler
Apexi AFC neo controller
top mount exhaust manifold
Turbonetics 65 Trim
TIAL external wastegate
Turbo timer

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Re: final exhaust leak question
Posted by: mark240zforce
Date: January 02, 2009 11:18PM

Yes,boost pressure will be lost.

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Re: final exhaust leak question
Posted by: evan1242
Date: January 02, 2009 11:24PM

will it cause backfiring due to incorrect signals to the ECU?

Marietta GA
1983 280 ZX Turbo @ 10 psi
Lone Wolf Performance intake manifold and throttle body
Taylor High Pro Wires
Greddy Type RZ BOV
Tokico Shocks/Lowering Springs/bushings from MSA
2.5 inch straight pipes
248,XXX miles
[www.zcar.com]

1991 240sx (s13) sr20det swap at 12 psi (about to be 20-22 when i get some bigger injectors)
full skunk2 drift suspension
full Megan racing exhaust
Greddy RZ Blow off valve
JDM sport intercooler
Apexi AFC neo controller
top mount exhaust manifold
Turbonetics 65 Trim
TIAL external wastegate
Turbo timer

Options: Reply•Quote
Re: final exhaust leak question
Posted by: mark240zforce
Date: January 03, 2009 01:54PM

probably not,how big a leak are we talking?

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Re: final exhaust leak question
Posted by: evan1242
Date: January 03, 2009 01:55PM

a bad gasket on the manifold (# 6 cylinder)

Marietta GA
1983 280 ZX Turbo @ 10 psi
Lone Wolf Performance intake manifold and throttle body
Taylor High Pro Wires
Greddy Type RZ BOV
Tokico Shocks/Lowering Springs/bushings from MSA
2.5 inch straight pipes
248,XXX miles
[www.zcar.com]

1991 240sx (s13) sr20det swap at 12 psi (about to be 20-22 when i get some bigger injectors)
full skunk2 drift suspension
full Megan racing exhaust
Greddy RZ Blow off valve
JDM sport intercooler
Apexi AFC neo controller
top mount exhaust manifold
Turbonetics 65 Trim
TIAL external wastegate
Turbo timer

Options: Reply•Quote
Re: final exhaust leak question
Posted by: mark240zforce
Date: January 03, 2009 07:59PM

I suppose if the leak was big enough it could cause a backfire in the exhaust on overrun.Your going to have to bite the bullet and change that gasket,no sense trying to rationalize not doing it.One thing I would do is put a straight edge on the mounting surface of the exhaust manifold and make sure it's flat or you will be doing it again.

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