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Diving in 911
 
Join Date: Apr 2014
Location: WA & AZ
Posts: 1,256
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951 wastegate issue...

Short of it is the old motor has a single port vacuum line on the wastegate. New motor does not have a port for it on the SEM vacuum router, I assume it was a 2 port wastegate on the donor car. Any issue in switching out the SEM to the one with the correct number of ports?

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1976 911s Special Edition Turbo bodied IROC tribute
2002 911 Carrera C4S
1971 914 1.7 Tangerine
1989 964 Coupe/1992 964 Cab
1987 928s4 Granite Green / 1986 951
Old 02-03-2015, 12:31 PM
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Diving in 911
 
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Nobody with an idea on this?
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1976 911s Special Edition Turbo bodied IROC tribute
2002 911 Carrera C4S
1971 914 1.7 Tangerine
1989 964 Coupe/1992 964 Cab
1987 928s4 Granite Green / 1986 951
Old 02-04-2015, 08:27 AM
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Toofah King Bad
 
Rasta Monsta's Avatar
 
Join Date: Oct 2006
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I'm afraid I don't know what a single port vacuum line is, or an SEM router.

I'd throw out an idea if I could. . .
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Old 02-05-2015, 06:22 AM
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Diving in 911
 
Join Date: Apr 2014
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Thanks Rasta, it's the Cyclic Valve and "single port" would be the number of vacuum connections on the wastegate. Some have 2 and some, like mine, have 1 vacuum port for a hose connection. One the old motor the CV has a dedicated port to run to that connection on the wastegate. The new motors CV does not have that port. So I'm trying to figure out if I can tie my old wastegate in somehow and where to do so.

Thanks
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1976 911s Special Edition Turbo bodied IROC tribute
2002 911 Carrera C4S
1971 914 1.7 Tangerine
1989 964 Coupe/1992 964 Cab
1987 928s4 Granite Green / 1986 951
Old 02-05-2015, 07:58 AM
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In the Fires of Hell.....
 
kdjones2000's Avatar
 
Join Date: Oct 2007
Location: Phoenix, AZ
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Sounds to me like your cycling valve has a nipple broken off - it is very common.

All models have 3 nipples on the cycling valve. I know of no exceptions to this.

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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
Old 02-05-2015, 04:56 PM
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