I did mention this in other thread,,I'm going dry sump in my dax cosworth,think i've got all the measurements sorted,one thing has sprung to mind,,what about the piston jets,,has anyone backfed through the oilway,with a conversion plate where the oil pump used to be ??

 

I imagine you need to wait for Mark Shead to chime in on this.

Who is building your engine?

 

Engine is already in car and running,the main reason i'm changing is for sump ground clearance,its about 50mm from the ground

just looking at the pic below,you can just about see it,,,and its even lower now

 

Ah, gotcha, I split the sump on my 7 showing off to a blonde, we yumped and there was oil everywhere


She gave it up though

 

easy done !

 

Yes, she was

 

 

anyone ?

 

here's my plan:-
Tap out the old oil feed hole hole(m16ish,or whatever the size is),from where the pump fed through,use a solder type banjo,re-configure/join/braze,the old existing oil spray bar,re fix where nesessary.Use a take off plate over the old oil filter,join both pipes together so one will be back feeding down to the jets.
now shoot me down.
Looking at an old oil pump,the jets only work on bypass,i assume this is to keep the pressure up on low rpm,but on the jets that are machined into the oilway they would be flowing all the time.just curious ,would the standard internal pump need to be uprated to compensate for low rpm.I'm not going down this route,just curious.

 

You need some kind of pressure control
You don't just want it dumping oil all the time

 

The oil jets that are machined and fitted directly to the block have springs in them to retain pressure. Dont really understand where you would feed the std pipe from?

 

would be fed from the existing oil way where the pump would normally feed oil into the oil filter,i could fit a pressure relief valve on the pipe feeding into the adaptorplate that i am back feeding

 

 

When did you last upgrade the firmware on your CAD system?

 

its commodore vic-20 software,i was thinking of using a vicrel box to control the engine management

 

That brings back memories, we still have a Commodore 64 and zx spectrum in the loft.

 

That will work fine matt.

 

Cheers nixon,,i'll get some pics up when i start