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Join Date: Apr 2005
Location: Foat Wuth
Posts: 408
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Shroud, Ducts & Gaps - Oh MY~!
The engine is rebuilt and putting on the shrouds and ducts.
First the easy one: where the alternator wires come thru the hole in the center of the shroud, is there - should there be - a grommet (rubber)? The bummer one: Backdate to 1974 Less Blower Heat - Left Side Plastic Hot Air Socket... All holes match up: 2 on the shroud, 1 on the fan housing, 1 on the block - But Look - Pretty significant gap at the bottom right of the socket, and about a 1/4" gap up the right vertical side~!! Common? Unusual? Socket does not appear to be warped. What to do?  The less hurtful one: Back date 74 Right Side Metal Hot Air Socket Plate. With a little bit of bending where it meets the fan housing - a pretty good fit... But see the circled cut out square opening at the bottom left corner? What's with that? OK as is - or?  Just how 'air tight' must the shroud, ducting and sockets be? I'm thinking 'pretty darn' tight is necessary... Thoughts? Thanks! Jim
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1980 911SC - 2nd Rebuild in Process - 2005 Porsche Cayenne Turbo - 2013 VW R ________________________ 2000 BMW X5 - 1996 BMW 530i - Toy 4 Runner (x2 or 3) - 1987 Toy Supra - 1988 Honda Si - 1984 El Camino Super Sport - MGA - MGB - Fiat 124 Spyder - Fiat 128 Wagon - 1962 Karmann Ghia - 1951 VW - 1953 Willys Jeepster w/Chevy 286 - 1995 Volvo 960 - 2006 VW GTI |
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02-26-2006, 09:37 AM
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Join Date: Apr 2002
Location: Santa Clara, CA
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Grommet, yes.
It is worth (wuth?) the effort to try and plug any air gaps. Any air leaking out the gaps is not cooling your heads and cylinders. I would try repositioning the block off plates to mininize any leakage, and fashion some type of plug for that square hole. The big air-loss area that is often overlooked is the spark pug boots. Those are big holes that can let a lot of air escape. Old boots tend to seal poorly, and often are not seated properly.
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Chuck Moreland - elephantracing.com - vonnen.com |
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02-26-2006, 09:52 AM
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Location: Foat Wuth
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Hi Chuck
Help some more: 'Reposition the block off plates'~? Confused... The left side hot air socket isn't used along with any 'block off plates' - is it? (It's not 'blocked off' it's channeling air - right?)
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1980 911SC - 2nd Rebuild in Process - 2005 Porsche Cayenne Turbo - 2013 VW R ________________________ 2000 BMW X5 - 1996 BMW 530i - Toy 4 Runner (x2 or 3) - 1987 Toy Supra - 1988 Honda Si - 1984 El Camino Super Sport - MGA - MGB - Fiat 124 Spyder - Fiat 128 Wagon - 1962 Karmann Ghia - 1951 VW - 1953 Willys Jeepster w/Chevy 286 - 1995 Volvo 960 - 2006 VW GTI |
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02-26-2006, 10:09 AM
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Registered
Join Date: Apr 2002
Location: Santa Clara, CA
Posts: 5,668
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By 'reposition' I mean to loosen the bolts and slide it around to minimize the gaps. Ovalize the holes a bit if needed.
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Chuck Moreland - elephantracing.com - vonnen.com |
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02-26-2006, 11:06 AM
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