He has the problem that he assumes every statement VW made about cooling with different parts is untrue, as they would get sued.. Typical paranoid Yank. In that he reckons that VW had to deny that the Type 3 head tins were better than Type 1 tins, or they would have been sued.
Isn’t it possible that the type 3 tins ARE better than the normal type 1 tins, as they were an afterthought, or improvement? Is does make sense though with the full ‘around the barrel’ air flow, didn’t it?
The whole air flow round a Type 3 engine is different. The fan is on the crankshaft, a different design to the T4 as well. A direct drive fan like on the T3 or T4 gives better cooling as the fan belt cannot slip, so the cooling increases with RPM unlike a T1 where the fanbelt slips more and more. Plus the fan is able to move more air anyway - 800 cubic feet per minute on a T4 (dunno for T3) vs 650 cubic feet per minute on a T1. And there are flow deflectors on a T1 engine between the barrels, and in the heads and pieces in front of and behind the barrels, so there is air being forced through the fins rather than past them. And then there are the sled tins and the heater boxes deflecting the cooling air further so it wraps round the cylinders and barrels. He has J tubes, wrong tin under the engine, maybe T3 tins are better then.. - but even he does say if you have it all stock T1 tinware and a stockish T1 engine it will be OK too.. Here's another disruptive distraction - but quite expensive. https://lnengineering.com/type-4-store/dtm-cooling-systems.html But if all you do is setup your carburettor and mixture properly, fix the tinware that should be there and drive sensibly with maybe using a temperature gauge as a warning, you shouldnt have trouble.
Amazing these things were and are still driven around in Africa Arizona México and any other belting hot places on Earth Don’t worry Soggzy it ain’t going to overheat in Somerset nipper… even if it has been a good summer
Lack of ommon sense seems a constant theme @Soggs - another none event ... Sent from my SM-G960F using Tapatalk
Exception being diesel engines which have been optimised to the point of oblivion and beyond - scraping cars as new injectors are just too horrendously expensive to replace.
I’ve seen electric fans fitted on the rear of fan housings. Or could a leaf blower be converted into a crude turbo? Saying that, my mate Andy did fit a turbo to his bay, for a laugh….
