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At 06:58 AM 7/23/04, Jim Adney wrote: >On 23 Jul 2004 at 8:26, RichardSt@price-hvac.com wrote: >> I may be buying a 72 T3 with a 2.0L T4 engine in it. Last weekend I bumped >> into a guy who is selling parts off of his Porsche 914 (I think) turbo; it >> 's a 2.0L as well. This got me thinking... has anyone here turbo'ed their T3 >> or T4 engines? What are your thought on this? > >914s were never turbo'd from the factory, so that's a conversion, too. Again, >what went wrong? Turbocharging a T4 isn't a good idea in any case. The exhaust ports are rather restrictive (and there's not much that can be done about it) and maintaining a good seal between the cylinder and head under boost is tricky. I'd stay away from it. A naturally-aspirated T4 engine in a T3, on the other hand, is a pretty good way to go if you're not a stock purist... >Consider GM's short lived experience (Oldsmobiles, was it?) with diesel >passenger cars. They tried to just change a few things and sell diesels when >gas prices went up in the 70s. Then these engines started failing because GM >had used the same piston rods as the original gas engines, and the bearings >weren't up to the task. Those engines showed up in Oldsmobiles, Buicks and some Chevy trucks and vans. I had one for about a year, so I know a bit about them. GM "dieselized" the Olds 350 V8. They did a great job re-engineering the bottom end -- cranks, rods, blocks. They did a piss-poor job re-engineering the top end, and they blew head gaskets at 30k miles, almost like clockwork. Those motors make an *excellent* base for a hi-po gas engine; the crank and block are nearly indestructable. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ Shameless link for search engines: http://listarchive.type3.org ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~