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Location:
Brisbane
Registered:
February 2003
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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Tue, 13 April 2004 02:00
 
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| Skip wrote on Tue, 13 April 2004 09:27 |
Have you noticed a power loss?
Perhaps your ignition timing is very retarded?
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thanks skip, i forgot about this stuff:
-surging/faltering over 7-8psi boost suggesting not enuf fuel
-vacuum at idle around 15-18mm/Hg - not enuf i think
-i had reset timing back to about 12degree static before driving around brisbane with wilbo, it had been running very high and was prone to pinging
- there was less power at low revs (reduced timing?) but the turbo seemed to be spooling up onto boost very nicely from about 2750prpm
- compared to when i had massive leak in exhaust manifold, it spooled up quicker - as if there was less restriction on incoming air and less exhaust gasses escaping before turbo - and it required less pedal movement to get the thing up onto boost (e.g. prior to this, spooling up took longer)
- we weren't experiencing any pinging/detonation - which the previous timing was causing
- in attempt to get it running cooler, we pulling the timing right back and ran with choke on - this hopefully explains all the soot/carbon.
- the manifold is steam pipe, not exhaust tubing - so i figure it needs a shitload of heat to get glowing red hot?
tho more i dwell on this, the more it sounds like carbi not delivering enuf fuel at high rates of air flow - tis the only thing that explains why it was red hot at cruise, yet sooty from idling.
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| | Subject | Poster | Date |
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what would make turbo manifold run red hot? leanout? very-rich?
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thechuckster | Mon, 12 April 2004 15:58 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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TA22 | Mon, 12 April 2004 16:34 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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wilbo666 | Mon, 12 April 2004 22:39 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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Skip | Mon, 12 April 2004 23:27 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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thechuckster | Tue, 13 April 2004 02:00 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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RWDboy | Tue, 13 April 2004 02:52 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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Skip | Tue, 13 April 2004 04:58 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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E30-323ti | Tue, 13 April 2004 09:05 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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Toobs | Tue, 13 April 2004 09:16 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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Skip | Tue, 13 April 2004 09:21 |
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Re: what would make turbo manifold run red hot? leanout? very-rich?
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thechuckster | Tue, 13 April 2004 14:06 |
