Who has had issues with afr heads??
06-01-2015 | 10:02 PM
#91
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From: yorkville,il
if the valve stem does not get lubed it will fail!
06-01-2015 | 10:24 PM
#92
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From: Raystown Lake , Pa.
Mike , empty your PM box .
06-01-2015 | 10:54 PM
#93
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From: chicago
Should have sent them to Jim Valako. You would have got the right springs, proper guide clearances , lubricated guides, and he could have improved the exhaust port while he had them. 
06-02-2015 | 12:15 AM
#94
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From: Chicago
Some folks (I lied it was BB) got all butthurt when Valako said the AFR exhaust port could be improved. Seems like a moot point when they can`t get a couple sets of heads with the right springs put together.
Poor guy who got Tims head and is thinking hes got a solid roller spring package! ooooops!
Poor guy who got Tims head and is thinking hes got a solid roller spring package! ooooops!
Last edited by ICDEDPPL; 06-02-2015 at 12:17 AM.
06-02-2015 | 04:46 AM
#95
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From: Olmsted Falls,Ohio Marblehead,Oh
[ATTACH=CONFIG]541762[/ATTACH]
Actually it is green.... Thought blue oops looking at pic a couple posts down that's what I got is geeen
Blue stripe wouldn't be correct, the pac spring is a green stripe. We went through this when I got my afr's. My builder looked them up and he thought the stripe on my springs looked blue, which would have been a pioneer spring and he would have made me change. AFR discontinued use of the pioneer spring sometime late last year, when I talked to AFR he told me that there wasn't even a blue/black stripe spring (pioneer) in there facility when the order was placed for my heads, they were gone long before that. I placed that phone call to get it all straight to assure my builder, and had them send me pics of the pioneer spring with the blue/black stripe to confirm. The pac spring has a green stripe on them, if it has a blue/black stripe it is a pioneer spring.
Last edited by Full Force; 06-02-2015 at 06:05 AM.
06-02-2015 | 06:54 AM
#97
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http://www.jegs.com/i/AFR-Airflow-Re...ductId=1630809
06-02-2015 | 07:06 AM
#98
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BTW, have you verified that you have the inconel exhaust valves? At this point, I would be verifying everything about those heads.
06-02-2015 | 07:34 AM
#99
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From: Olmsted Falls,Ohio Marblehead,Oh
Well, FWIW, this is what Jegs lists as the specs for the green stripe AFR springs. It lists a spring rate of 645 lb/in - does that sound right? Take it for what it's worth, I would verify your spring rates with a spring tester. It doesn't say if this is the PAC spring, so it might be something different.
http://www.jegs.com/i/AFR-Airflow-Re...ductId=1630809
http://www.jegs.com/i/AFR-Airflow-Re...ductId=1630809
06-02-2015 | 07:34 AM
#100
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From: Olmsted Falls,Ohio Marblehead,Oh
