Weltmeister Oil Pressure Booster Kit

[D7N7MASTER]

Hi All,
I recently purchased a Weltmeister Oil Pressure Booster Kit for our '73 2.0 914-4. Color me stupid - but I don't see the relief valve on the side of the case. The one on the bottom is obvious. The engine is in the car, sooo, what do I need to remove to gain access. Thanks,
Gary

[Dave at Pelican Parts]

It's not there on all 914 engines. Look on the driver's side of the case, somewhere in amid the lifter bores (where the pushrod tubes go).

--DD

[D7N7MASTER]

Ok... thanks. When did this configuration change? Should I be able to narrow this down to engine s/n? What if I just replace the larger piston on the bottom? Will I see a pres. inc?
Thanks Again, Gary

[Dave at Pelican Parts]

I'm not sure when it happened. I've heard "some time in 73", but I can't back that up with any solid info.

You'll probably see some kind of pressure increase just replacing the bypass piston.

--DD

[D7N7MASTER]

Thanks Dave. Couldn't have guessed. I was starting to question my eyesight...hehehe. My porsche shop manual shows two valves, so if the bible says it's there - it's there. DOOOhhhh, then it's not. Now what do I do with this "extra" valve...:-)

[Will98D]

Is there a less expensive kit with just the one valve for the later engines? Seems stupid to throw one away, unless they're identical, in which case you could have a spare or sell it to another later engine owner.