<VV> Subject: Turbo hose clamps

djtcz at comcast.net djtcz at comcast.net
Sat Oct 25 17:23:03 EDT 2014

Some foreign cars have (had?) clamps made of wire that would seem to apply more concentrated pressure. 

Modest pressure should seal a uniform round or elliptical surface. Sealing against local low spot would be far tougher, requiring serious squishing deformation of the hose. 

The machined turbo outlet would be hard to dent, although corrosion could under mine a good surface. The stamped steel manifold inlet might benefit from gentle application of an expanding exhaust pipe expander to raise any low spots. Are you clamping over the raised rib, or beside it? 

Dan T 


Date: Mon, 20 Oct 2014 09:05:36 -0400 
From: Jim Simpson <simpsonj at verizon.net> 
To: Virtual Vairs <virtualvairs at corvair.org> 
Subject: <VV> Turbo hose clamps 

Does anyone have a good suggestion for replacement hose clamp for the turbo 
outlet-intake cross-over pipe hose? 

The original Chevrolet clamps really don't provide a good seal; at decent 
boost levels, there's a fair amount of leakage. If you try to tighten them 
too much, the bolt flanges bend. And that leaking air/gas mix goes 
directly into the heater! 

I've used standard SS radiator hose clamps, but just about all the ones in 
the local parts stores are pretty junky. I've looked at -- on line -- the 
Summit Racing "T-Bolt" hose clamps and they look pretty good. 

Does anyone have any experience with them or have another suggestion? 

Thanks in advance. 

Jim Simpson 

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