

| Subject: | Re: Wasserboxer cooling (was:Re: aftermarket instrumentatio |
| Date: | Tue, 16 Jul 1996 08:42:53 -0600 |
Interesting discussion, but it's apples and oranges. Shawn, I think it's inappropriate to compare the cooling of your Turbo inline 4 Jetta with the WB. There are stark differences in the oil cooling systems, the loads placed on the engines, and the way the engines are designed to deliver their power/torque. It is all ancedotal info. I have found the cooling to be adequate on all the WB's that I have driven under all conditions UNLESS there was a problem with the cooling system (an all too frequent occurance). One of the most common is/was the failure of the cooling fan switch. When the cooling fan doesn't go on when it should, you get over heating (incidently, this was true with the GTIs/Jettas as well). If you're over heating in 1st and 2nd I'd look into this. But if you don't think the cooling system as stock is sufficient, you can add a fan switch and thermostat with a lower temp range. VW makes replacements that just drop right in. Select the range that you want! >On 15 Jul 96 at 14:38, SyncroHead@aol.com wrote: > >> I expect that you'll say - "Ahhh, that's only coolant temperature, What >> about the oil temperature?" It is true that presently I am not able to >> monitor oil temperature. Oil temperature can be much more volitile than >> coolant temperature, but after a sustained period under extreme condiditions >> the coolant temperature will inevitibly rise if oil temperature remains very >> high. This would have been refelcted on the coolant temperature gage before >> long & it wasn't. >While I agree the w/b cooling system seems adequate so far on my '88 >under normal conditions, I do find it cannot cope with 1st & 2nd gear >travel for prolonged periods, even when keeping revs up to maintain >coolant flow. I often stop too cool off after 20-30 minutes of rough >road travel in these conditions. >I must disagree with your conclusion about the relationship between >oil & coolant temps, based on experience with my Jetta. I have a >mechanical oil pressure gauge on my Jetta which also reflects oil >temps somewhat. I find oil temp will climb slightly faster than >coolant temp on hills as indicated by a quick drop of about 10psi in >pressure. This is followed by coolant temp rise. However, the coolant >temp will drop to normal in about 1 minute of flat driving, while the >oil pressure will remain low for 5-10 minutes or more. I attribute >the quick rise in oil temp to the turbo on my Jetta, but since it has >the same oil-to-coolant exchanger as on the Vanagon, I suspect the >cool down process of the oil is similar in the Vanagon. So a coolant >gauge which has returned to 'normal' doesn't necessarily mean the >engine oil is also 'normal'. > > Shawn >'88 Westy 332k (Kyra) >'85 Jetta TD 350k (Jenni)
Have something to add on this topic today? Revive this thread in the forum »