High oil temp and forensic engine investigation

Moderators: Amskeptic, Sluggo

User avatar
drober23
Addicted!
Location: Metro Detroit
Status: Offline

Re: High oil temp and forensic engine investigation

Post by drober23 » Mon Sep 11, 2017 9:55 am

No, I don't. I held off responding because I thought I could find the original notes that Jake provided with the engine. I can't seem to put my hands on them, which disappoints me a bunch. Anyway, no idea what gears are in there.

I plan to check the end play next time I have the engine out. Not sure if I will drop it this fall though. I need to change my transaxle final drive seals (got a leak starting), but I think I can do that with the trans in place.
DJ

'75 Westfalia, '79 Deluxe
(plus more busses than sense)

In a time of chimpanzees I was a monkey

User avatar
Amskeptic
IAC "Help Desk"
IAC "Help Desk"
Status: Offline

Re: High oil temp and forensic engine investigation

Post by Amskeptic » Mon Sep 11, 2017 10:49 pm

drober23 wrote:
Mon Sep 11, 2017 9:55 am
No, I don't. I held off responding because I thought I could find the original notes that Jake provided with the engine. I can't seem to put my hands on them, which disappoints me a bunch. Anyway, no idea what gears are in there.

I plan to check the end play next time I have the engine out. Not sure if I will drop it this fall though. I need to change my transaxle final drive seals (got a leak starting), but I think I can do that with the trans in place.

Next time you are rooting around under the engine, look directly up from the carrier at the center rear of the engine.
If you have a flat plate, it is likely a Melling 30mm. If it is an aluminum cap with a protrusion, that is the factory 26mm pump. Strangely enough, the little factory pump so very often does a much better job at idle because it is perfectly indexed with the crankcase holes . . .


Yes, you can do the side seals installed:

viewtopic.php?f=47&t=10203
BobD - 1978 Bus . . . . . . . . . . . 111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 108,000 miles
Pluck - 1973 Squareback . . . . . . 55,570 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

User avatar
drober23
Addicted!
Location: Metro Detroit
Status: Offline

Re: High oil temp and forensic engine investigation

Post by drober23 » Tue Sep 12, 2017 6:10 am

Definitely a flat plate up there. I have some pictures from the build that confirm this:

Image

The oil pressure is quite low at idle. How does the pressure provided by the Melling pump compare to stock at high RPM though? You learn new things every day!
DJ

'75 Westfalia, '79 Deluxe
(plus more busses than sense)

In a time of chimpanzees I was a monkey

User avatar
Amskeptic
IAC "Help Desk"
IAC "Help Desk"
Status: Offline

Re: High oil temp and forensic engine investigation

Post by Amskeptic » Tue Sep 12, 2017 8:54 am

drober23 wrote:
Tue Sep 12, 2017 6:10 am
Definitely a flat plate up there. I have some pictures from the build that confirm this:

The oil pressure is quite low at idle. How does the pressure provided by the Melling pump compare to stock at high RPM though? You learn new things every day!
Normally, the aftermarket big pumps get better at high rpm.
Colin
BobD - 1978 Bus . . . . . . . . . . . 111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 108,000 miles
Pluck - 1973 Squareback . . . . . . 55,570 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

User avatar
sgkent
Addicted!
Location: Citrus Heights CA (near Sacramento)
Status: Offline

Re: High oil temp and forensic engine investigation

Post by sgkent » Tue Sep 12, 2017 1:49 pm

might be excessive endplay. JR is known for that.
Thank You -

Merlin The Wrench

Machine Work/Shop Recommendations: http://kentcomputer.com/77VW/machinework.pdf

Pointers on rebuilding an engine: http://kentcomputer.com/77VW/rebuilding_a_vw_engine.pdf

Post Reply