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Author Topic: More valvetrain issues  (Read 1314 times)

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fryedaddy

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Re: More valvetrain issues
« Reply #15 on: May 29, 2024, 11:47:25 AM »
i broke a tip off one of my pushrods and the problem was my pushrods were a hair too long and it caused one of the cup ends of the pushrod to hit the rocker body.
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1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

Jim Comet

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Re: More valvetrain issues
« Reply #16 on: May 29, 2024, 08:32:20 PM »
I used 1 piece .120 wall Smith Brothers push rods. Looking at the ARP studs on the driver's side there are some shiny spots on them signifying wiggle. The passenger side looks totally normal.  I think new studs and some additional clamping force should solve the issue. I hope!!!
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Jim Comet

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Re: More valvetrain issues
« Reply #17 on: May 29, 2024, 08:42:49 PM »
As far as afr, I used my lambda meter. Good lambda on a pass for E85 would be 75 to 83. When we made a pass the readings were getting over 90 (very lean) and we lifted and coasted through the top end. Hopefully I have it figured out (more fuel pressure) or I will go back to VP110.
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