Folks, my problem appears to be solved.
After running 15 minutes, at 180* oil temp, I have 42psi of oil pressure at idle (about 2K).
Thanks John at AVIAID for supplying a great pump and being so helpful.
I guess I won't really know whether the pump was the fix, or if one of the other two...
Lionel - I have two scavenge lines fron the pan, and one coming from the head.
There is a tiny restrictor fitting in the head to keep most of the oil going to the block - there's just not that much oil in the head.
From what I've witnessed, there's almost no oil going down the scavenge line...
>>Oil pressure dropping of alarmingly with temperature is often a result of a worn out or wide clearance oil pump.
>>first I got rid of my old pump - it's an old TDC pump made in the 70s. While I did have it rebuilt, I have no confidence in it. I've switched to a nice new Aviaid pump, with...
While oil pressure certainly varies with temp, it should not vary 60 psi, sorry. I'm using Mobil 1 10-30 nothing fancy. Many other racers are using zero weight with no issues.
Morning folks.
Moving the tank from the trunk up to the passenger footwell made a big difference - but did not solve the problem. After say 10 minutes on track the pressure starts dropping again - much slower than before but still drops to very low (under 10psi at idle).
I have made three...
Thanks everyone.
In order to move the tank to the passenger footwell, I had to find a suitable place for the ECU and move it, along with moving pretty much the entire electrical system (fuse housings relays, etc).
I've also found a nice used Huffaker sump pan so I'll be swapping that out and...
So, turns out the tank was 8" below the pump. I'm in the process of moving the tank much closer to the engine, almost 5 feet closer.
When I was looking at the line filling the tank, I wasn't impressed with the volume of the oil coming out. There wasn't really enough flow to get the contents of...
Morning folks, first post. I've spent a couple hours digging around and didn't see my question answered before so I thought I'd post a new thread.
I am racing an EProduction mazda miata in SCCA club racing. As the stock miata oil pump regulator is proned to problems, I've "made the plunge" and...
