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Date:         Thu, 31 Aug 2017 13:52:24 -0400
Reply-To:     Gabriel Hourtouat <ghourtouat@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gabriel Hourtouat <ghourtouat@GMAIL.COM>
Subject:      Re: oil pressure problem on my 1983 air-cooled
In-Reply-To:  <CY4PR20MB1303646674CADC7F81308D6BA0850@CY4PR20MB1303.namprd20.prod.outlook.com>
Content-Type: text/plain; charset="UTF-8"

still trying to understand this thread about timing and zigzag papers. I picked up okay on taking up smoking (except for the coughing); but I don't get the 34-35deg ahead timing and the paper between the points. Any further guidance would be thoroughly soaked up. g 86 wbx

On Wed, Aug 23, 2017 at 4:11 PM, Dennis Haynes <d23haynes57@hotmail.com> wrote:

> If you still have the degree plate near the fan you should be able to see > the timing advance as you rev the engine. On the Non California models just > disconnecting the vacuum advance will change the distributor to centrifugal > advance only and reduce the total advance available. Try that and see if > you can set it to 34-35 at 3,500 rpm. Then just set the idle speed to > compensate for where the ignition timing lands at idle. For the oil cooler > it can be done with the engine in place. Just remove the fan housing to get > the oil cooler off and fabricate a block off for the air ducting. I use > copper tubing at the engine due to the close proximity of the exhaust and > other hot parts. Aeroquip socketless hose from the oil thermostat to the > cooler element, -08, (1/2"). > > Dennis > > > From: Christophe Guilbert [mailto:cguilbert@picasso.ucsf.edu] > Sent: Wednesday, August 23, 2017 1:50 PM > To: Dennis Haynes <d23haynes57@hotmail.com>; vanagon@GERRY.VANAGON.COM > Subject: Re: oil pressure problem on my 1983 air-cooled > > 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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