Oil Pump Options

[CG-914]

I know that oil pumps are the bases for discussion, but:

I do have a type for and a type 1 pump,
But I like the Idea of having a type 4 pump, that lines up and is made out of aluminum,
like this one.
http://www.cbperformance.com/ProductDetail...roductCode=1829
It has the same expansion rates like the block.
Has anyone used it?
What is the QUALITY?

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[Mark Henry]

I've used a CB pump before, quality and fit is hit or miss.
Ditch the POS aluminium cover and use a steel cover.

[Keith914]

I've used a CB pump before, quality and fit is hit or miss.
Ditch the POS aluminium cover and use a steel cover.

Just installed a 1829 Maxi Pump 1-914/Type 4 oil pump from CB Performance. Used Gasgacinch gasket sealer (per CB advice). Started motor -- at just under 1,000 rpm idle -- 40 psi at cold start up, declined to 27 psi with warm oil -- much improved oil pressure! BUT after warm up, checked for oil leaks, -- 3" puddle of oil on the floor under the oil pump with a new drop every 15 seconds or so.
I assembled the pump with a smear of new engine oil (along with a full engine oil change) on the two gears and their shafts, and applied the sealer to both sides of the thick gasket (pump to engine case) and the pump and cover plate mating surfaces (paper gasket is too thin to smear sealer on). By this time the paper thin gasket was oily which I attempted to remove most of the oil by blotting with a paper towel. I torqued the four bolts to about 15 ft/lb.
Oil is clearly leaking only from the pumps cover plate gasket line, as observed from under the jacked up car. I could only access the two bottom pump bolts which I was able to tighten a little more -- made no reduction in oil leak!!

Where did you get or how did you design/make a steel plate. Why was this necessary? I assume this was a good solution?
Thanks, Keith.

[Mark Henry]

Jupump bolts which I was able to tighten a little more -- made no reduction in oil leak!!

Where did you get or how did you design/make a steel plate. Why was this necessary? I assume this was a good solution?

You can use this cover, just plug the outlet with a 3/8" NPT plug if not going full flow. http://www2.cip1.com/ProductDetails.asp?Pr...ode=C13-31-2940
Also make sure that it's flat using a piece of glass and some 120 grit sandpaper.
I use the steel cover because the pump gears actually try to drill through the cover.

I use Threebond under the pump and on the thin cover gasket I rub RTV (gasp! not RTV! Yes RTV...) into the gasket. I said rub it in, no excess what so ever.
Absolutely important that there is no excess RTV, or any other sealant you may use, in the grove that is cut around the face of the pump.
That groove is there for a reason, to the relieve the pressure that causes cover leaks.