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Author
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Topic: 347 with glowing red hot headers
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86 Maier
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Member # 9668
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posted
 
 
I built a 347 with World products heads, Edelbrock intake, 1.7 rockers, 30lbs inj, B-cam, BBk headers, 3in exhaust. The headers glow after driving it for about 15 minutes. TPS motorsports dino tuned the car 3 times to make sure all the fuel ratios, timing, etc are where they are supposed to be. The exhaust is huge and unrestrictive. Any ideas what could be going on?
Posts: 84 | From: La Honda 94020 | Registered: Dec 2009
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92_5.0
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Member # 7624
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posted
That's odd. I was gonna say timing. Just out of curiosity, what's the average temp when warmed up? After market gauge or stock?
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Infineon/Sears point? same difference!
11.8 @ 115 mph @ Sac Raceway
411 rwhp 402 trq (old set up)
540 rwhp 517 rwtrq (new set up)
ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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turbo50
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Member # 6700
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posted
quote:
Originally posted by 86 Maier:
I built a 347 with World products heads, Edelbrock intake, 1.7 rockers, 30lbs inj, B-cam, BBk headers, 3in exhaust. The headers glow after driving it for about 15 minutes. TPS motorsports dino tuned the car 3 times to make sure all the fuel ratios, timing, etc are where they are supposed to be. The exhaust is huge and unrestrictive. Any ideas what could be going on?
Did the headers glow on the dyno???
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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SLOWSN95
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Member # 8269
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posted
Stock/old harmonic balancer?
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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86 Maier
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Member # 9668
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posted
Temp is cool. It doesn't run hot at all. The gauge is stock but works good. The headers do NOT glow on the dino. Only after freeway for 10-15 min. Harmonic balancer is a new Cloys hex adjust and hasn't slipped. The car runs fast strong with no running issues.
Posts: 84 | From: La Honda 94020 | Registered: Dec 2009
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Secnd2nun64
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Member # 1431
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posted
Advance your initial timing and back down your total timing to compensate for the increase of initial timing.
Posts: 1460 | From: CA | Registered: Jun 2002
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turbo50
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Member # 6700
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posted
quote:
Originally posted by 86 Maier:
Temp is cool. It doesn't run hot at all. The gauge is stock but works good. The headers do NOT glow on the dino. Only after freeway for 10-15 min. Harmonic balancer is a new Cloys hex adjust and hasn't slipped. The car runs fast strong with no running issues.
Then hoook a wideband up to it and see what is happening when you actually drive it. Very odd that it didnt happen on the dyno when timing and AFRs were monitored/set to where they need to be....
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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SLOWSN95
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Member # 8269
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posted
quote:
Originally posted by turbo50:
quote:
Originally posted by 86 Maier:
Temp is cool. It doesn't run hot at all. The gauge is stock but works good. The headers do NOT glow on the dino. Only after freeway for 10-15 min. Harmonic balancer is a new Cloys hex adjust and hasn't slipped. The car runs fast strong with no running issues.
Then hoook a wideband up to it and see what is happening when you actually drive it. Very odd that it didnt happen on the dyno when timing and AFRs were monitored/set to where they need to be....
+1
Cruising AFR should be around 14.0-15.0.. but even 17.0s cruising wouldn't cause glowing red headers. WOT AFR should be anywhere from 12.4-13.0 with an NA setup
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94' GT
347 Stroker
MM Suspended
2003 SB SVT Lightning
Pullied and Lowered
89'Hatch-SOLD
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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