Berg pump

Marcas · Post by **Marcas** » Wed Jul 03, 2002 12:16 am

I am rebuilding a 1600cc engine using a standard 4 rivet cam and am adding a berg full flow kit. The pump with the kit is designed to be used with all types of cams. I have had to push the shaft of the gear which fits into the cam 7.5mm into the gear in order to make it work properly. Although the instructions suggested some adjustment this seems a lot. Anyone else have experience of these pumps?

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Wed Jul 03, 2002 6:39 am

The pumps are suppose to be different, one should be an AK suffix, and the other a BK suffix. you can make it work that way, but it's risky.

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Jake Raby
Raby's Aircooled Technology
www.aircooledtechnology.com

Post by **Marc** » Wed Jul 03, 2002 7:00 am

I've wondered why Berg doesn't sell 2 different pumps (the 111 115 107BK that goes with a 4-rivet cam has longer gears than the AK, maybe they think the extra 4mm is a bad thing?). I don't see any justification for using a 4-rivet cam unless it's to allow the use of the bigger pump - they come loose at the rivets a lot more often than the 3-rivet ones do, presumably a harmonic-vibration thang, I dunno for sure. If there's nothing special about this cam, I'd swap it for a 3-rivet and use it in something else with a stock BK pump. People have been doing it Berg's way for years and I haven't heard of a problem, but I agree with Jake that it just doesn't seem right.