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
>