[TR] Oil Pressure Loss

davehogye dlhogye at comcast.net
Tue Dec 27 20:19:58 MST 2016

Here are photos of the improved oil pickups. They scavenge the oil very close, (about 1/4") to the floor of the pan. Most modern oil pickups have the pickup screen close to the pan floor for added efficiency and security. 
There are two styles in the photos. One for standard depth and one for deep sumps. 
I have modified stock pickup tubes and the one with the bend is for the deep sump. 

Dave H. 

----- Original Message -----

From: "david brady" <dmb993 at earthlink.net> 
To: triumphs at autox.team.net 
Sent: Monday, December 26, 2016 12:44:21 PM 
Subject: Re: [TR] Oil Pressure Loss 

Wow, this group is certainly experienced with dumping oil out of live 
engines! I understand it was common practice to do hot engine oil 
changes on irrigation engines. It was to cumbersome to take the engine's 
completely out of service which would require re-priming to get the 
pumps running again; instead, they brought the engines to a slow idle, 
opened a ball valve to drain the sump, spun on a new filter, and 
refilled the sump, then the engine was cranked up to full load. 

I had my self pretty much convinced that even though I dumped three 
quarts out the gauge orifice I never starved the bearings of oil flow. 
Now I'm not so sure. I have an aluminum sump which holds 7 quarts. I 
pumped out three, so now the question is, how deep does the oil pump 
suction inlet go into the sump pan? IOWs, did the oil geyser stop 
because I shut down the engine or did it stop because the oil pump 
started sucking air after pumping three quarts? 

'68 TR250, 

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