Oil Pressure Problems

Cannonball · Post by **Cannonball** » Fri May 30, 08 1:49 pm

jim
i know you will know but the pressure bleed down is not to do with the marks you have on your bearings, that prob is elsewhere unless the clearences are massive, could you have a gallery plug missing, i doubt that i am sure that it would never show pressure on the gauge, rackin me brian

Anonymous · Post by **Anonymous** » Fri May 30, 08 2:01 pm

Cannonball wrote:jim
rackin me brian

Poor old Bri will give anything a go for them extra inches

Just out of interest, would that crank journal / bearing damage have been caused by a foreign object left in the motor after build?

mopar_mark · Post by **mopar_mark** » Fri May 30, 08 2:42 pm

Cannonball wrote:jim
i know you will know but the pressure bleed down is not to do with the marks you have on your bearings, that prob is elsewhere unless the clearences are massive, could you have a gallery plug missing, i doubt that i am sure that it would never show pressure on the gauge, rackin me brian

I thought the same Dunc, I would of still expected to get better pressure as grooves in brg are bad, but not that bad to give massive oil drop.

Gallery plug sounds like a good suggestion

GTXJim · Post by **GTXJim** » Fri May 30, 08 2:56 pm

I think it may have picked up some debris in the oil system, I will let you know on Saturday when I do the autopsy

Cannonball · Post by **Cannonball** » Fri May 30, 08 4:45 pm

GTXJim wrote:I think it may have picked up some debris in the oil system, I will let you know on Saturday when I do the autopsy

jim if you get stuck i have several oil pumps milodon/keith black etc that your welcome to try for testing etc

Anonymous · Post by **Anonymous** » Sat May 31, 08 2:30 am

GTXJim wrote:Cheers Guy's, thanks for the advice, I've also heard that the big pump can supply too much oil to the Indy heads with the external oiling and almost fill up the valve covers so considering putting an adjustable oil pressure relief valve on. But in the mean time will check gauge then pump then every thing else, so should be fun this week.

Surely you would be better to have a more restrictive feed to the heads under those circumstances? restricting the feed to the whole engine can't be a good thing when it is only the heads being over oiled?

Anonymous · Post by **Anonymous** » Mon Jun 02, 08 10:28 pm

Hi Jim, you say that you had new main caps fitted . Did they line bore the block for you? Has anyone checked the oil clearance?
Paul.

GTXJim · Post by **GTXJim** » Tue Jun 03, 08 6:07 pm

Hi Paul, Yes mate the pro gram mains were lined bored and I plasigauged all the mains when the motor was assembled and will recheck when I fit the new bearings. Have you still got your Super Comp car and Motor or has it sold? I'd still like to come down and have a look one day cheers.

Pete · Post by **Pete** » Tue Jun 03, 08 6:09 pm

Any news yet Jim?

Fingers crossed for you...

GTXJim · Post by **GTXJim** » Tue Jun 03, 08 7:21 pm

New bearings have been ordered, will be cleaning and checking everything this week,hopefully bearings will turn up by Saturday then will reassemble and go though oiling system again

Anonymous · Post by **Anonymous** » Tue Jun 03, 08 7:48 pm

Yes Jim, have got the car in the workshop. You are still very welcome to come over. I'm going to Florida on Saturday, back on 21st.
Call or e-mail me and come on over.
If you are still having problems I'll be happy to help you out.
I also thought last night to get you to check the oil pick up. Make sure when it swings around that you still have at least a 1/4" under it, as this will suck down just like a hover. I've see these fitted too low in the pan.
You definitely need restricted oiling to Indy heads as well.
Good luck. L8R.

Paul.