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Join Date: Jan 2007
Location: Finland
Posts: 16
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What are thees holes ?
I have an idle problem, could this be the reason ?
The engine is a 3.0 SC with 204 hp ( 930 / 10) from 1982. I was surprised to se these 2, probably drilled holes, you can see in the middle. 
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09-03-2008, 03:47 AM
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83 CHECKER
Join Date: Jun 2008
Location: Saratoga N.Y.
Posts: 611
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If I don't know what it is I probably won't be of much help, but what is it? Secondly the holes look machined or molded that way and not drilled to me. We are talking of the 2 smaller ones obviously.
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'83 911SC CAB '90 ZR-1 '68 TR-250 |
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09-03-2008, 04:28 AM
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Location: Finland
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what is it ?
Sorry, I forgot to explain. I do not know how this part is called
but it is Rubber / plastic cap on top of the CIS. I have also a 2,4 cis engine from 1973 and there are no "extra holes" in that one. The holes are between the throttle body and the CIS air plate. regards John |
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09-03-2008, 05:05 AM
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Location: New Jersey
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That doesn't look right. Seems like a major unmetered air leak!
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Peace, Ron www.ronorlando.net 78SC Targa 3.2 SS, 964 cams, CIS, SSI's,Dansk Own a gun and you can rob a bank , own a bank and you can rob the world. |
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09-03-2008, 06:07 AM
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Location: Finland
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idel problem solved
I plugged the holes and EUREKA the idle problems disappeared !
I do have a theory about the holes: the guy who sold me the crasched 911, from which i salvaged the engine, works as a drag race bike mechanic, so he would know how to install a Nos system. Can anyone tell me if these 2 wholes could have been used for this purpose 
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09-08-2008, 10:57 AM
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Location: MS.
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It very easily have been for a single stage NOS set-up. One hole for the extra fuel, and one for the juice.
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84' Steelslantnose Cab. 1953 Dodge B-4-B-108" 90,127 miles 1953 Dodge B-4-C-116" 58,146 miles 1954 Dodge C-1-B8-108" 241V8 POLY 1973 Roadrunner 440-SIX-PACK* 1986 F-250 Super Cab-460 V8 tow Newest additions- Matching numbers 1973 340 Road Runner!! 1948 Dodge B-1-F-152" 1-1/2 ton Dump body, 39,690 miles others... |
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09-08-2008, 12:05 PM
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Location: Northern Virginia
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Wouldn't it have been simpler to come in through one of the throttle body vacuum ports instead of tapping the intake boot? Just curious.
Brian
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'82 SC Targa '83 SC Cabriolet |
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09-08-2008, 12:24 PM
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I don't think that would have worked, going the vacuum port route , being the need for two spray nozzles. 1-fuel and 1 NOS.
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84' Steelslantnose Cab. 1953 Dodge B-4-B-108" 90,127 miles 1953 Dodge B-4-C-116" 58,146 miles 1954 Dodge C-1-B8-108" 241V8 POLY 1973 Roadrunner 440-SIX-PACK* 1986 F-250 Super Cab-460 V8 tow Newest additions- Matching numbers 1973 340 Road Runner!! 1948 Dodge B-1-F-152" 1-1/2 ton Dump body, 39,690 miles others... |
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09-08-2008, 06:19 PM
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Hope the PO was careful about the amount of boost. Sounds like you may have bought a car that was driven hard.
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1984 Carrera Coupe = love affair 1997 Eagle Talon Tsi = old girlfriend (RIP) 2014 Chrysler 300 AWD Hemi = family car "Lowering the bar with every post!" |
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09-08-2008, 08:19 PM
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Dentist, I was thinking the same thing....
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84' Steelslantnose Cab. 1953 Dodge B-4-B-108" 90,127 miles 1953 Dodge B-4-C-116" 58,146 miles 1954 Dodge C-1-B8-108" 241V8 POLY 1973 Roadrunner 440-SIX-PACK* 1986 F-250 Super Cab-460 V8 tow Newest additions- Matching numbers 1973 340 Road Runner!! 1948 Dodge B-1-F-152" 1-1/2 ton Dump body, 39,690 miles others... |
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09-09-2008, 05:36 AM
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It was designed to get to the Finnish line fast.
Brian
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'82 SC Targa '83 SC Cabriolet |
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09-09-2008, 06:13 AM
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Location: MYR S.C.
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i have heard it called "the turtle"
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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09-09-2008, 06:17 AM
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Location: Long Island,NY
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Quote:
Stealth NoX Install
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1980 911SC #99 track car, 993 3.6, 50 PMO's 2019 Ford F150 da dragger 2015 MB SL400 wifey DD 2008 E93 M3 DD 2007 E60 530 wifey winter beater |
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09-09-2008, 05:36 PM
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1984 Porsche Carrera
Eagle Talon TSi AWD
Chrysler 300 AWD Hemi
