[Vwdiesel] Volvo Diesels

Kurt Nolte syncronized_turbo at yahoo.co.uk
Fri Jan 12 02:32:21 EST 2007

LBaird119 at aol.com wrote:
>   Amazing what a 3" exhaust would do to drop temps.  Maybe 
> bigger if it's a TD.  2 1/2 on the 1.6, so I figure 3" for my 2.0 Audi 
> TD then at LEAST 3" for a 2.4 TD Volvo.  EGT drops dramatically 
> with bigger exhaust.  That in turn would drop operating heat load.  
> I don't understand where all this "diesels run hotter than a gas" 
> stuff comes from.

It's not so much a "diesel runs hotter than gas" thing as a "the 2.4 
runs hotter than the 1.6" thing. Apparently over time they can run hot 
enough to de-temper the rings (???) which makes them quite smoky as they 
get older. I'm more than a little skeptical about that one, though.

Engine in question is an NA model, though eventually I'll probably buy 
and drop in a TD engine once I get serious about the Volvo. Which, given 
how long of a project I'm looking at the Ultimate Syncro project being, 
might be pretty soon just so I have a driveable diesel. ;)


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