SBC mechanical fuel pump oil seal issues

General engine tech -- Drag Racing to Circle Track

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pamotorman
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Re: SBC mechanical fuel pump oil seal issues

Post by pamotorman » Tue Oct 10, 2017 12:50 pm

the only way the oil can get there is down the push rod or from the pan being forced up the drain hole by G forces in the turns. see if you can put a baffle in the pan to keep the oil from getting into the drain back hole in the turns

ProPower engines
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Re: SBC mechanical fuel pump oil seal issues

Post by ProPower engines » Tue Oct 10, 2017 7:29 pm

There used to be a company named seals it.
They sold a boot type seal that kept the fuel pump from being overwhelmed with oil and pissing out the vent holes.
Not sure if they are still available but we used them for years till 2000 and something when we went to injection.

May be worth a search to see.Buy 2 if you can as they don't last forever but a couple seasons were what we got out of them.
Real Race Cars Don't Have Doors

cgarb
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Re: SBC mechanical fuel pump oil seal issues

Post by cgarb » Tue Oct 10, 2017 11:20 pm


leahymtsps
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Re: SBC mechanical fuel pump oil seal issues

Post by leahymtsps » Wed Oct 11, 2017 6:25 am

FC-Pilot wrote:
Tue Oct 10, 2017 10:13 am
I have used two dart SBC's and on both the drain back from the fuel pump barely broke through into the crankcase. We had to get the grinder out and open it up. Next time you have the engine torn down you may want to check that. That could definitely prevent proper oil drainback.

Paul
X2 most if not all are like that
Tom

Kev7s
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Re: SBC mechanical fuel pump oil seal issues

Post by Kev7s » Wed Oct 11, 2017 8:28 am

leahymtsps wrote:
Wed Oct 11, 2017 6:25 am
FC-Pilot wrote:
Tue Oct 10, 2017 10:13 am
I have used two dart SBC's and on both the drain back from the fuel pump barely broke through into the crankcase. We had to get the grinder out and open it up. Next time you have the engine torn down you may want to check that. That could definitely prevent proper oil drainback.

Paul
X2 most if not all are like that
Tom
Thanks guys ,ill do that over winter I have one race left the weekend, so its almost ready to come out.

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