My 57 air cooled bus always needed to be re-timed when I went from 6000' elevation to sea level.... otherwise it would stop!.... literally skid to a halt as the motor got too hot..., Wait a bit, and she'd go again.. I got good at timing it using a zig-zag rolling paper between the points and the fan pulley notch... On Aug 23, 2017 10:50 AM, "Christophe Guilbert" <cguilbert@picasso.ucsf.edu> wrote: Thanks Dennis. You guessed it, I removed the ERG, Yes cylinder head is over 400 most of the time. My van is a California model so the timing is 5deg ATDC, taking into account that I have no ERG, reducing the timing down to 35 degrees would means what ? 40 (35+5) ATDC or 30(35-5) BTDC ? I have a secondary oil cooler in the front already in place , I just did not had time to connect it yet using PTFE stainless braided line and plate sandwich (with thermostat). I love your setting but it appears to me that you need to remove the engine to install it. I will certainly do that during my next engine rebuild. I will connect the second oil cooler this week, do I still need to change the timing knowing that the temp will be fixed ? Thanks so much for the help. Chris
On 08/22/2017 10:58 PM, Dennis Haynes wrote: > > Your engine is overheating terribly. Your oil temp should be around > 200 or lower. Cylinder head temps are probably well over 400. Most > likely your EGR system is missing or not working. As a fix you need to > get the ignition timing down to about 35 degrees total advance. > Consider getting a real oil cooling system in place. > > Dennis > > Sent from my Windows 10 phone > > *From: *Christophe Guilbert <mailto:cguilbert@PICASSO.UCSF.EDU> > *Sent: *Tuesday, August 22, 2017 7:29 PM > *To: *vanagon@GERRY.VANAGON.COM <mailto:vanagon@GERRY.VANAGON.COM> > *Subject: *oil pressure problem on my 1983 air-cooled > > > Hi guys, > > I installed recently an oil pressure gauge in my vanagon (air-cooled 2L > 1983) > > in a hot day (100F) , my (very annoying ) alarms triggers all the time > when I am idling. the pressure is less than 5 PSI for an oil temp of > 250-260F. > > I notice that the oil pressure really diminish over oil temperature > which is normal but I am wondering if I am within the spec . > > When engine is cool , I have a PSI of 45. I have 20PSI around 240F when > the van is cruising at 60-65MPH, it goes down to 15PSI at 260F while > cruising at 60-65MPH. > > I think my oil pressure is too low , What do you think ? . Do you think > my oil pump is guilty ? , I went cheap by not replacing it when I > rebuilt my engine. > > Do you also think that the low oil pressure could be the reason why I > have noisy hydraulic lifter when the engine is cold. > > Thanks for any feedback > > > Chris > |
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