|12-27-2006 05:55 PM|
|67 Deuce 4 Me||
Thats a great point! I had a buddy in school years ago that had a built 302.It developed oil pressure problems. The filter had came apart inside. Filter fixed the problem!
|12-27-2006 08:39 AM|
|newmexicosaint||I will check at the filter, change the filter, and check at the side of the block and check oil pressure there as well. Gosh I hope that the issue is simple|
|12-27-2006 12:53 AM|
Had the same problem once.
Did all the same things, even pulled bearings. after about the third time pulling the pan rechecking everything again. I decided to replace the brand new oil filter I had just replaced and my pressure came back to normal! Yes I had bought a filter that went bad after about 3days of driving. Cheap to try and easy to overlook. Good luck.
|12-27-2006 12:30 AM|
Earlier Tech Post- Not FORD Specific
You need to take a oil pressure reading at the filter boss (QUALITY MECHANICAL GAUGE) as this will read the actual oil pump output. The boss at the rear of the block is after the oil has gone through all the passages/bearings/lifter bores.
Have you contacted FORD RACING TECH?
|12-26-2006 09:42 PM|
Spring limits the maximum pressure, not the minimum.
If it did 45 cold then the spring will allow at least 45 hot === if there is any pressure available through the bearings.
|12-26-2006 07:46 PM|
Per Jon Kaase racing engines I used a melling hv pump and valvoline racing oil 20-50. This is a new pump replacing a new pump. I dread checking the rod and main bearing clearances but I am about out of options (man, this sux). You guys have all been great for responding. Let me know if you come up with anything else. I'll keep you posted.
I did not change the spring in the pump but achieved higher pressure with the replacement. I also have not checked pressure at the oil galleys-I have only checked at the back of the block. This is the ford racing A-460 block and I am new to the ford thing. (been a chevy guy all my life, I just have a mustang fetish, he he)
|12-25-2006 06:44 AM|
|12-25-2006 02:26 AM|
|curtis73||Possibly a bypass valve stuck open?|
|12-24-2006 11:13 PM|
|67 Deuce 4 Me||Only gaining 1 or 2 psi when revved is not normal. Taking into consideration what you have already checked. I would have to think there is excessive clearance between your crank and bearings allowing pressure to bypass just my .02. Did you search old threads for similar problems?|
|12-24-2006 09:12 PM|
|Gokussj5okazu||That's not extremely unusual if you think about it. It holds good pressure when it's cold because the oil is thick, but thins out alot when it gets hot. Sounds like you just need to run a thicker oil. What weight are you using?|
|12-24-2006 06:05 PM|
Oil pressure prob. (unusual)
I just dropped a 598 c.i. ford stroker in my mustang and I am facing an unusual oil pressure issue. The engine holds 45lbs pressure cold and 15lbs pressure hot. The pressure does not increase with RPMs more than 1-2lbs.
We have changed oil pump, gauge, and checked oil galley plugs. we have also pulled the pan and primed the engine to see if we had a cam bearing washed out. I am at a loss and could use your insight and theories. Thanks folks.