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Date:         Tue, 5 Oct 2010 06:21:28 -0700
Reply-To:     Don Hanson <dhanson928@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Don Hanson <dhanson928@GMAIL.COM>
Subject:      Re: Oil temp. ? and OP ?
In-Reply-To:  <AANLkTinPoNH-+rEvfrHbwkhxbic6M44OMZK4g0kptiKK@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Great, thank you, everyone.

Mine seems to be running a little too hot, compared to these numbers then. Assuming my gauges are correct and located in good places, on a highway drive in 70f temps at 65mph I was seeing 230-245f Oil Temp, stabilized after about 10 miles of coming up to temp. I am running without the coolant/oil filter heat exchanger connected right now, so I shall put that into the system to see if that will bring my Oil temp down. If that doesn't help much, then I'll try a real oil cooler...probably in the driver's side D-pillar (the passenger side has my cool air intake snorkle) I didn't have any numerical gauges when running the old 1.8 liter set up..just the light and the water temp dash indicator...which, by the way, reads just below the LED with an 80c thermostat, has done on both motor confifurations.

My oil pressure, as indicated by a new VDO sender and instrument, sensing from the front of the head, indicates that my oil is losing significant viscosity at the motor gets hot...I have about 85psi on start up (15/40 dino oil) but as I reach 230f with the oil temp. the pressure sinks to about 25 at 2000+ rpms and 10psi at idle..Lower than I like. Not low enough to activate the OP warning light, but too low for my liking ... When the Oil temp is indicated around 200, I have 40psi OP.. In town, the temp comes down to around 210f. I bet when climbing a long mountain pass..it will probably rise to beyond what is good...that is just a guess...

I may also be seeing some thermal issues from my ignition timing being off a little. I timed this "franken-motor" by ear, and now I am incrementally working the timing back, little by little (advancing the ignition spark timing) until it begins to show signs of detonation...

A few more 'refinements' as I wrap up this little project..swapping the 1.8 liter block out for the ABA jetta bottom end.

Thanks again for the temp and pressure numbers, everyone.

Don Hanson

On Tue, Oct 5, 2010 at 5:09 AM, Jonathan Berg <jonbergga@gmail.com> wrote:

> 50 degree ABA I4 layout like yours. VDO gauges in the A pillar. MobIl > 1 15W50. Syncro with lots of fiddlly bits. > > Cold start up presides of ~75 psi. > > Warm idle of ~15-20 psi. > > Intown high temps of 220-225F. Haven't seen a pressure lower than 30 off > idle. > > Sustained highway driving at 75mph I've touched 240F with no drops in > pressure ~65psi. A touch hot me thinks. > > Thinking about a larger oil/waterheat exchanger or a separate D pillar > oil cooler. > > HTH > > JB > > On Tuesday, October 5, 2010, Don Hanson <dhanson928@gmail.com> wrote: > > Those of you with Oil Temperature gauges, what kind of operating temps > do > > you see? And Oil pressure gauges? Readings? > > > > I just installed some into my 'new' inline Jetta powered 84..I have no > > idea of what the ranges of temp and pressure is deemed acceptable.. > > > > Anybody have actual gauges and want to share? > > > > Don Hanson > > >


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