Vacuum pump install; engine plate

[Caprimaniac]

Yes;invested in a CVR vacuum pump; fitting kit and a Moroso Mandrel drive not long ago. First time out doing something like this; and first time doing a race only engine as well. Guessed there was no harm getting some In HG out of the crankcase….

Installing on a SBF 302 with front engine plate. I'd like some good advice on how to mount it on the motorplate.

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Should the rear of pump be level with front of motorplate and bracket sit at the far rear of pump?
Or; should i make (an oval, for adjustments) hole in the plate so the bracket goes to the front of pump w/ spacers? (Personally I "feel" this 2. posibility best- regarding the pump & belt placement. Pump held at front, belt close to crank snout. But worst regarding the plate- not too much material there, and the pump needs a large area to go through…)

Or; it does not really matter? Strain on pump/ belt/ cranksnout no such magnitude as of causing any problems?

[Dragsinger]

judging by the photo, I think you will want to do a cutout [recess the pump] in the motor plate so the crank drive pulley is as close to the damper as possible

[Caprimaniac]

That was my thought too...

I think; Plate not too wide..... Cut a piece of the bottom out- putting pump low, leaving as much of the plate as possible.

Will have to check clearance for filter and tubing, but I think you got me in the right direction...


BTW: Not much info on this pump to be found. Seems like Moroso + Star +... is more popular. 1. impression: It's a good Product...

[Caprimaniac]

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The best I could do tight now as the spacers and bolts are to short to put it another 1/2’’ reareards.

[Rick!]

There’s not a lot of “yank” on the pump shaft due to belt tension on a vacuum pump. I see them mounted by just the back onto the motor plate often, especially when a crank driven procharger is present. I’m not familiar with CVR but Moroso and Star pumps do fine mounted on their backside.