Uh...oh

[Luvtruck]

Lost oil pressure at the end of a 1/8th mile pass during qualifying this past Saturday:cry2::sick2:

[mytmouz]

Bummer...

[Diabolical]

I hope nothing seriously broke!!
If it did.. Post a pic here and we will mourn the carnage with you..

[sgblazer2]

I hope nothing seriously broke!!
If it did.. Post a pic here and we will mourn the carnage with you..

X2!!

[Luvtruck]

It didn't smoke or make any bad sounds so hopefully just some bearings.

I was getting ready to pull it anyway to have the heads massaged and a new custom ground cam done by bullet:bling:.

I'm thinking the oil pickup or something like that

I'll keep ya posted

[Bacon]

Hope its nothing major.

[dand355]

did you loose pressure completly or just at end of race?? i used to loose pressure at end of a long run (1/4 mile for you 1/8ers) all my oil would pump up to the top and didn't hit the pan fast enuff turn off the track and would loose press temperary, took care of problem...

[Luvtruck]

did you loose pressure completly or just at end of race?? i used to loose pressure at end of a long run (1/4 mile for you 1/8ers) all my oil would pump up to the top and didn't hit the pan fast enuff turn off the track and would loose press temperary, took care of problem...

I lost pressure completely.

[dand355]

oopps....

[Luvtruck]

Dropped the pan last Thursday and one of the ears had broken off of the oil pump.

Checked rod bearings and main bearings and everything looked like new:rock:

Dodged a bullet on that one:cool4:

[421s10]

good to hear it didnt damage anything..

[434 smallblock]

congrats glad it wasnt bad

[Luvtruck]

Thanks!! Guess I need to give some credit to my VR1 20-50 molasses oil:laughoutloud:

[Luvtruck]

WTF!!!!! Broke another pump after only 15 passes:veryangry:

It did the very same thing that it did before.....just as soon as I lifted at the 1/8th mile mark the oil light come on and my pressure was flickering from 0-5psi just like before.

Motor's coming out and going to the shop for some head work and a new Bullet cam and to see what's causing these pumps to break all of a sudden.

Might be time to just get an aftermarket block.

[AlteredRacer]

Oh man that sucks. I had a fellow racer who had a 800 hp 410 sbc in his rear engine dragster and he kept breaking ppumps as well and here his rear main cap was broken. Good luck

[Mad Max]

Try 15 - 40W oil. I bet that goop 20 -50 you're using is cauisng whiplash when you let off :laughoutloud:. If you're using a high volume pump, that my be another reason. Milodon makes a real nice $$$$$ pump for SBCs.

[mytmouz]

Is this by chance a Melling pump? There are several threads on other boards about a redesign causing this...

[Luvtruck]

Is this by chance a Melling pump? There are several threads on other boards about a redesign causing this...

Yes Sir!! The first pump was a high volume Melling pump and it broke one of the ears at the base where it bolts to the block and was pushing oil out the side.

New pump is a Shuman which is thicker at the base but evidently broke also.
I haven't pulled the pan...figured I'd let the engine builder do that so he can see it fresh for himself.

Man I love that sig of yours!!!!!!

[Luvtruck]

Try 15 - 40W oil. I bet that goop 20 -50 you're using is cauisng whiplash when you let off :laughoutloud:. If you're using a high volume pump, that my be another reason. Milodon makes a real nice $$$$$ pump for SBCs.


I would but I'm running alcohol and it was recommended that I run the 20-50.

Motor is going to a HIGHER end builder this time so we'll see what he recommends this time....might end up back on race gas.

[Mad Max]

I would but I'm running alcohol and it was recommended that I run the 20-50.

Motor is going to a HIGHER end builder this time so we'll see what he recommends this time....might end up back on race gas.

Oh... An alky eh? Better stop drinking that stuff, it'll kill you.:laughoutloud:
I didn't know you were running bug juice. If you go back to R gas = carb changes, cam etc?

[mytmouz]

Yes Sir!! The first pump was a high volume Melling pump and it broke one of the ears at the base where it bolts to the block and was pushing oil out the side.

New pump is a Shuman which is thicker at the base but evidently broke also.
I haven't pulled the pan...figured I'd let the engine builder do that so he can see it fresh for himself.

Man I love that sig of yours!!!!!!

Not familiar with Shuman, but the melling figures...

[Luvtruck]

Oh... An alky eh? Better stop drinking that stuff, it'll kill you.:laughoutloud:
I didn't know you were running bug juice. If you go back to R gas = carb changes, cam etc?

I can run either:stirpot:
I have a gas Dominator and an Alky Dominator.

I just ordered a Dart Iron Eagle block and these Pontiac 867's are heading to Ron's Porting for the full massage:laughoutloud:than it's cam time.

Looking(hoping)to run 5.60's on motor

[Diabolical]

That will be a nice set up!!