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Old 12-14-2021, 08:26 PM   #427
IROCZman15
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Join Date: Dec 2004
Location: Roxbury, NJ
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yup, thanks Matt. Makes sense!

I did a little research today and brought the pump to work where I disassembled it..took that roll-pin out and the spring out. I couldn't verify that the spring was stuck or not, but I did learn how it all worked when I called Melling just after I took it apart. The internal pressure relief valve slides open to relieve pressure (controlled by the spring). If the valve or spring is stuck, it would cause high pressure as it is unable to bypass the excess fluid. According to melling, the spring in this current pump is a 58 psi spring. Which makes sense, because i was getting 60 psi (on my stock camaro dashboard's oil pressure gauge) for many months. And then all of a sudden after racing at island one day LAST October, it went to 80ish psi and lived around there ever since. Melling also said,t hat 80 isn't dangerous back then when I called them, and they said the same exact thing to me today. During our chat today, they did agree that I should repair or replace the pump. Melling then told me that they would recomend a better version of the pump, one with better gears, a chromoly shaft, a more robust "neck", and a (blue) spring installed that is pre-set to 70 psi. It also comes with another 58 psi spring, but he said the 70 psi would be best for me due to how I use the car and the rpms I rev to.
-The pump they recommended to me is the Melling Select # 10550ST. ( link contains a video)
https://www.summitracing.com/parts/m...gaAh9SEALw_wcB

Looks like I would have to buy a pickup tube though? And then weld it on to the pump? Am I correct ?










I then called the Engine builder (Pat at Nyes Racing Engines) and he agreed that this pump would be great, along with the blue 70psi spring. We also chatted about rear main seals and the oil pan gasket failure as well as what gaskets to use for the rebuild.
FelPro Rear main seal:
https://www.summitracing.com/parts/f...8aAlUuEALw_wcB

OR,
I could buy the bottom end block full gasket set:
https://www.summitracing.com/parts/fel-cs77332

but this comes with the 4 piece cork gasket set for the oil pan. I'm thinking of using the 1 piece synthetic oil pan gasket.
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