Date: Fri, 13 Aug 1999 08:54:02 -0400 From: "Eric Law" <elawxnospamxnopsamecsxnospamx.com> Subject: Re: Exploding turbo plumbing: do up your hose clamps.
FYI/FWIW: The earlier turbo cars (thru about '84 or so) had a metal strap between the throttle body and the intercooler or turbo pipe, just to prevent this from happening. When they switched to the newer, molded rubber connectors (black instead of red), they dropped the strap arrangement. Whenever I've done major boost increases, I've made my own. Eric Law Dean Malandris <wwwnopsamus-technologies.com> wrote in message news:37b11fa7.310330171nopsam.zip.com.au... > A week or so ago, I turned up the maximum boost pressure setting on the APC > unit in my Classic 900 16V. As a result, the throttle now has two settings: > idle, and Hyperspacial Jump Drive. Me like very muchly. > > Late last night, a kilometre away from home, there was a very sudden and > loud bang, and an immediate loss of all power (the engine was nowhere near > full boost at the time). Sounded like it was running on one cylinder. I > limped it home (barely making it), with nasty visions of changing the head > gasket. > > Imagine my surprise when I found that the reason for the bang was that the > pipe running between the output of the intercooler and the input to the > throttle body housing had popped off its fitting to the latter, like a cork > popping out of a chapagne bottle. Or to be more exact, the rubber coupling > had separated from the throttle body housing; the rubber coupling and the > pipe still being in one solid piece. > > This is a 60mm solid aluminium pipe. I'm impressed, and as Jesse The Body > used to say, I don't impress easy. > > So I refitted it, only to have the same happen later this afternoon. I then > found out that the hose clamps securing the fittings just weren't gripping > tightly enough. Tight, yes, but looks like it needs to be > Boa-Constrictor-Quality tight. These had, over the years, just lost their > condition. > > A new pair of hose clamps and that should be it. May I suggest to those of > you that twiddle with the boost pressure to double-check the tightness of > all clamps keeping high-pressure plumbing intact.
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