New long block in '67 and low oil pressure at idle when hot?

[Warren]

So I would like to get some feedback on my new long block and see if I am getting steered wrong here from the builder...

Right after I got it I made the run home on the freeway about 30 miles at about 60-65mph on a fairly warm day but nothing major (mid-hgh 80's)

When I got off the ramp and stopped she went to idle the oil light came on - Tickled the throttle and it went out but checked the level any how and it was full.

Called the maker the next day and they said it's not a big deal as long as it does indeed go out when I tickle the throttle and to keep driving it and if it still does it at the 2000 mile check they can "bump up the pressure".

As an side using straight HD 40 weight as recommend here in San Diego.

I have 700 miles on him now and any long 20-30 minute run on the highway and he'll still do it. No weird sounds or anything and he runs superb.

I've never seen this before so am worried...
_________________
Warren in San Diego
1967 Beetle Sunroof Sedan

[vwoldbug]

Make sure the idle speed is ok and get the oil pressure tested . Then try to find out if it has the proper oil light switch . Then talk to the builder , did you get a warranty . Is there a repair order showing what was done .

[Warren]

[TDCTDI]

Get an oil pressure gauge, bring car up to temp where the light was coming on, remove pressure switch, install gauge & see what the oil pressure is.
_________________
Everybody born before 1975 has a story, good, bad, or indifferent, about a VW.


GOFUNDYOURSELF, quit asking everyone to do it for you!


An air cooled VW will make you a hoarder.


Do something, anything, to your project every day, and you will eventually complete it.

[Danwvw]

I would try a different oil pressure sender before taking it back. The 67's had single oil pressure relief cases "H" cases and when they got a lot of miles on them they would do that and that is one of the reasons VW went to the Dual Oil Pressure relief cases which provide more oil than even worn out bearings need and dump the extra oil pressure through the Oil Pressure Control valve. If your engine is running too hot this could cause it too.
Oil temps over 230' F are starting to be too hot. The Single Port engines sometimes have the original heads cut for 1585cc or bigger and the result is too high of compression and so with the Iron oil cooler that they have and all, the oil temp gets too hot.
It could also be something wrong with the parts used Ie. the Oil Pump it'self and if so it can be fixed easily with the right oil pump. Consider an early 26mm filter pump. If your case is aftermarket a dual oil relief case you would use the later 71 on oil pumps. Maybe it has the wrong oil pump.
_________________
1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[mukluk]

A fresh rebuild will tend to run hot for a while until it breaks in. Additionally, with the closer tolerances of the fresh rebuild and what I feel is too heavy of an oil weight will lead to higher oil pressure at cruising speed which will bypass the oil cooler for a longer period, reducing its cooling and therefore resulting in higher oil temps and reduced pressure at idle.

Did the builder say to run straight 40wt or did you use it upon somebody else's recommendation?
_________________
1960 Ragtop w/Semaphores "Inga"

[Warren]

[Q-Dog]

You have a warranty. Do whatever the builder says.
_________________
Brian

'69 Dune Buggy
'69 Beetle Convertible
'70 Beetle

[bugheadred]

[Warren]

[surfbeetle]

What are his recommendations for after the first 2000 miles? I too am in SD, I always ran 20-50 oil but as you said before, do what the engine builder says so that your warranty will remain in place.
_________________
67 Beetle Build Thread
69 Beetle

[&Dan]

You might check to determine your fuel pump is not leaking nor overpressurizing your carburetor and dribbling gas into the case, diluting the oil. That can happen.

[bluebus86]

low pressure when hot at idle can cause the lamp to illuminate. the real trst to determine if something is wrong or not with pressure it to hook a gage up the gage can be attached where the pressure switch is. vw service manual gives the specifications for pressure at a given weight of oil, at a given temperature and rpm. make sure your motor is within those limits. since the motor is new, pressure should be on the high end of the limits

Bug On!

ps my oil light never comes on at idle, and it is a well used motor. you NEED to test pressure. Bentley Manual describes the test.
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information

Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022

[Warren]