[T3] type 4 2000cc oil pressure and overheating problem

[Keith Park]

Welcome to the world of the T4!
Even the slightest of problems will cause them to overheat, you have to
start by getting and AFR meter on it so you know where your mixture is.

A 2056 in my T3 gave similar results, IF it try it again I need to
re-install the sump baffle to prevent frothing of the oil, which caused me
the low oil pressure on the highway, and I need to install an oil cooler as
the T3 intake doesn’t pressurize the air intake and it doesn’t get enough
air for cooling.

Keith


Top Notch Restorations
topnotch at nycap.rr.com 
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of pablo vial
de ruyt
Sent: Friday, December 09, 2011 7:22 AM
To: type3 at vwtype3.org
Subject: [T3] type 4 2000cc oil pressure and overheating problem





Hi, i from Chile and looking for real empirical experience, need help for
oil temp problem with my automatic Westfalia 1978 (stock 2000cc, type 4 -
dual carbs solex 32-34 pdsit-3), my interest is only summer use with long
travels with my family (need fiability) ....temp range in my country in
summer is 75-95 Fº. Rebuilt 20 or 30 type 1 engines without problems, but
first experience with a type 4. Is second time rebuilt my engine in 2
month.....first time (without fuel pump push rod install) overheating and
melted after only 40 miles run......possible causes: plugs white lean,
timing incorrect 10-12º btdc, 7,8 CR, possible low oil pressure, etc....Now
i rebuilt again (very expensive) crank completly machined 0,25 and check,
new bearings, new piston and barrels kit, heads ok, and install aftermarket
Schadeck oil pump (1829 CB performance for type4/914) fit ok , holes
alignment, but difference size holes oil pump, 7,3 CR , 3º btdc to 850 rpms
with 28 max (without vacuum hose connected), and increase 125 fuel jets to
140 size....This time installed oil pressure and temp gauge for better
control.

First check:
Runs very well but 20 minutes or 3 miles 195 Fº oil temp...with 10-40 psi
oil pressure range.....

Second check:
With 88 Fº exterior temp........20-50 psi cold engine oil pressure.......and
hot:
70 km/h 
2500 rpm
7 idle - 25 psi max oil pressure
230 Fº oil temp
20W/50 oil
After highway road to my house oil temp 240 Fº and oil pressure max 20 psi.

Check again timing and without vacuum hose 28º max....with vacuum hose 35º
aprox.....and 3º btdc idle.....idle is fine???
Considerer this.......but need make sure correct position cooler flaps 100
open and need jets recommend for dual solex 32-34 pdsit-3, now installed 140
mains, idle 52,5, airs 160, stock rest. 
My fear is overheating again.

Appreciate your advice
Best regards and thanks. 
Pablo V. 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20111209
/149f882f/attachment.htm>
_______________________________________________
VWType3.Org mailing list - type3 at vwtype3.org
http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
Contact gregm at vwtype3.org if you need help with the list.