fuel pump pushrods

Richard Cranium

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I've had a couple that have worn, but who else has been having trouble with them wearing? What do youz guys attribute it to; the rod being made of Chinesium, the camshaft, or using oil with no zinc?

I just bought a Comp Cams hardened one.

https://www.summitracing.com/parts/cca-4626

Thoughts?
 

BeepBeepRR

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Throw that one in the trash too. Just kidding I don't remember the part numbers for the last 2 that went bad but they were both Comp Cams. 2 pushrods in probably 6 months. Edited because I spoke wrong. lol
 
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69Bee

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Throw that one in the trash too. Just kidding I don't remember the part numbers for the last 2 that went bad but they were both Comp Cams. 2 pushrods in probably 6 months. Both bronze tipped too.
You didn't mention which cam type you are using, but the bronze tip rods are only for the billet roller cams.
 

ruffcut

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Something to look forward to! I think when it happens then I'll go with an electric pump.
 

BeepBeepRR

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You didn't mention which cam type you are using, but the bronze tip rods are only for the billet roller cams.
I was thinking wrong... No they were not bronze tip. But the same one RC just bought.

IMG_4303.JPG
IMG_4304.JPG
IMG_4304.JPG
IMG_4305.JPG
IMG_4306.JPG
IMG_4307.JPG
 
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w.Hudson

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I have had the best results with a fuel pump push rod from stock motor and using a zinc additive.

In fact the one that I am currently running came from a 69 dated 440.

Bought a fancy hardened rod from Mopar Performance for my Hemi. Wanted to have all brand new parts.

It didn't last long.
 

Mackman

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Maybe the cams have something to do with it. My stock pushrod lasted about 1500 miles after I installed a Comp Cams cam. Replaced it with another stock one I had. We’ll see.
 

R413

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Notice the common denominator yet?
Avoid their Cams and rods

I reuse original FP pushrods with joe Gibbs driven racing oil.
 

Fran Blacker

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What do guys think of take a the new push rod to a heat treater and have measure hardness on a Rockwell tester? Then induction harden the ends a couple numbers on the Rockwell C-scale?
 

R413

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What do guys think of take a the new push rod to a heat treater and have measure hardness on a Rockwell tester? Then induction harden the ends a couple numbers on the Rockwell C-scale?
Take an original one with you and have them match hardness to an original from the 1960’s.
 

69L48Z27

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All my big blocks reuse their original ones with no drama. I’ve never had a chewed up factory one. Maybe I’m lucky?
 

Richard Cranium

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img_4304-jpg.jpg





This is the one I just got from Comp Cams; Same part number on the package...

IMG_1622.jpg
 

hunt2elk

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Comp and Mancini rods are both junk. Haven't tried a Hughes yet, but really doubt it is any better than the other 2. I gave up on all of the reproductions and only use originals now.
 

turbine68rt

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I've had a couple that have worn, but who else has been having trouble with them wearing? What do youz guys attribute it to; the rod being made of Chinesium, the camshaft, or using oil with no zinc?

I just bought a Comp Cams hardened one.

https://www.summitracing.com/parts/cca-4626

Thoughts?
What oil are you currently using? If you need a good original I can send you one.
 

BeepBeepRR

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The last oil change I know for sure it got VR1 oil so hopefully that solves the issue. I do not know what he was using prior to the rod failure.
 

khryslerkid

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Not this topic again! :rolleyes:

Don't use any of the new ones. Find a OEM one or a used one that measures 3.220 or very close. A Howard's that I bought only lasted 2,000 miles.

We're is the "It's all Junk" thread?
 

F4R/T

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I dug a spare out of box of old engine parts after everyone started having problems and talking about it here..
 

Richard Cranium

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Not this topic again! :rolleyes:

Don't use any of the new ones. Find a OEM one or a used one that measures 3.220 or very close. A Howard's that I bought only lasted 2,000 miles.

We're is the "It's all Junk" thread?



This topic is new to me. If there other topics on it please post some links.

:thumbsup:
 
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