Show whole topic Oct 11, 2017 9:38 pm
Mark Offline
Member
Registered since: Feb 05, 2009
Location: Worcestershire


Subject: Options to pressure feed the crankshaft of an 11.9
I am looking at options to modify the engine lubrication on my 1923 11.9. Currently there is a plunger pump that drips oil into the two main bearings and onto the timing chains. The big ends are reliant on splash lubrication. This is quite effective but the risk of oil starvation to the front big ends on long inclines always remains.
There are a number of successful modifications of these engines which involves drilling oil ways into the crank to supply the cranks bearing journals. The oil supply is then enhanced through upgrading the oil pump with and Austin 7 unit on the later 12/24 and making a new double acting plunger pump for the simpler 11.9 engine.

My question is whether anyone has any experience of using a remote 12V gear driven oil pump to pressurise the lubrication system on an early vintage engine? These pumps are readily available for use with turbo chargers etc. If using such a pump is feasible they are small enough to be positioned discretely and plumbed into existing pick up and supply pipes.

As usual any advice gratefully received.

Regards
Mark