[malmech12]

Throwing my 427 back together. The old pump was a Mellings M77HV. The new pump is a plain M77. Installed the "Blue" spring. My question is: What is the plastic sleeve/bushing that came with it? My old one didn't have one. Whats this for?

 

[Dave427]

Its for the stock style oil pump drive. The bushing holds the stock style shaft from falling off the pump.

Dave

 

[GOSFAST]

Throwing my 427 back together. The old pump was a Mellings M77HV. The new pump is a plain M77. Installed the "Blue" spring. My question is: What is the plastic sleeve/bushing that came with it? My old one didn't have one. Whats this for?

Recommend not using the "plastic" sleeve (retainer) to hold the pump-driveshaft in position when using ANY HV or HP pumps. These sleeves do break occasionally.

Get the driveshaft that has the "steel" sleeve for a retainer. Melling part #IS-77! (The plastic sleeved one is part #IS-77A)

Thanks, Gary in N.Y.

P.S. Also would recommend installing the "pink" pressure-relief spring found in your HV pump in the new M-77 piece! Spring is Melling #M77020

 

[malmech12]

What the deal on the Pink spring?

 

[malmech12]

I don't think I need the retainer. I have a Moroso driveshaft. It has a pinned sleeve on the diameter of the shaft, can't fall out. Or am I missing something here. Also I am not running the HV pump. The HV pump smoked the thrust area on the last build. So is this Pink spring your talking about something for a standard M77? The concensious from what I have read here is go with the standard M77 and run the Blue spring. As someone here said, if that setup was good enough for Smokey Yunick to win the Daytona 500, it outta be good enough for a street pounder. What your guys thoughts on all of this?

 

[Dave427]

Run your Moroso pump driveshaft, its all you need.

Dave