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FE Power Forums => FE Technical Forum => Topic started by: cattleFEeder on March 12, 2020, 06:46:17 AM

Title: Roller bearing fuel pump eccentric
Post by: cattleFEeder on March 12, 2020, 06:46:17 AM
I never heard of this before, probably not going to be a big help on a street motor.
https://www.hipoparts.com/ford-roller-bearing-fuel-pump-eccentric-kit-w-arp-pro-series-bolt/
Title: Re: Roller bearing fuel pump eccentric
Post by: machoneman on March 12, 2020, 08:56:13 AM
Interesting idea for sure. Wonder what hp it freed up. Likely not much at all. Dyno test, anyone?
Title: Re: Roller bearing fuel pump eccentric
Post by: GerryP on March 12, 2020, 09:10:32 AM
Interesting idea for sure. Wonder what hp it freed up. Likely not much at all. Dyno test, anyone?

If you aim to eliminate the fuel pump as a friction source, it would make more sense to run an electric pump.  Even a roller bearing has some friction.
Title: Re: Roller bearing fuel pump eccentric
Post by: mbrunson427 on March 12, 2020, 09:17:20 AM
Have 2 of them on the shelf, was talked out of running them. For a street motor anyways. Just increases the risk of sending metal through the engine.

I set them to the side with the RobbMc fuel pump. Figured that the high volume mechanical fuel pump and one of those ball bearing eccentrics go hand-in-hand for a track engine.
Title: Re: Roller bearing fuel pump eccentric
Post by: WConley on March 12, 2020, 09:47:57 AM
I like the claim he makes about "eliminating fuel pump arm bounce".   Umm - no.  It's still a round eccentric that creates the same motion in the arm.  Saving a bit of friction won't keep the arm on the eccentric.

It's not a bad thing, but most likely the answer to a question nobody has asked!
Title: Re: Roller bearing fuel pump eccentric
Post by: gt350hr on March 12, 2020, 10:12:04 AM
  It was a Nascar thing to reduce friction when they were stuck with "mechanical only" pump rules. Actually did ( strangely) keep the lever in contact at 8,500+ rpm better than the stock eccentric as proven by Spintron testing. It was expensive , often locked up , and was heavier ( by far) than the stock eccentric. It obviously was a Ford ( RYR) thing.
   Randy