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924RACR
Joined: 29 Jul 2001
Posts: 8889
Location: Royal Oak, MI, USA
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 Posted: Fri Nov 12, 2021 12:03 am Post subject: |
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Correct; one is signal from the Hall effect sensor, the other is the shielded ground for the co-ax wire.
Not sure how best to connect to an MSD, though.
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Vaughan Scott
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'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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MikeJinCO
Joined: 08 Jun 2010
Posts: 1243
Location: Maysville, Colorado
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| Posted: Fri Nov 12, 2021 1:13 am Post subject: |
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Gone for a couple of days, I'll get the get the diagram for the MSD when I get back.
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Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Fri Nov 12, 2021 8:06 am Post subject: |
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| 924RACR wrote: | | Correct; one is signal from the Hall effect sensor, the other is the shielded ground for the co-ax wire. |
Interesting. I think I missed that ground. I will fix that! |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Fri Nov 12, 2021 8:12 am Post subject: |
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| MikeJinCO wrote: | | Gone for a couple of days, I'll get the get the diagram for the MSD when I get back. |
Awesome, thanks! I've been using the MSD diagram, but I wasn't sure what type of distributor I'm using.
Here is the instruction book: https://documents.holley.com/6425.pdf
I assumed it was a Points/Amplifier Style Ignition. Thus my my white wire is going to that center wire from the coax cable on the distributor.
I then figured my red wire was going to the "Z" terminal on my cutoff switch (where the ignition coil is on the diagram for the switch):
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MikeJinCO
Joined: 08 Jun 2010
Posts: 1243
Location: Maysville, Colorado
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| Posted: Sat Nov 13, 2021 6:10 am Post subject: |
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MSD Wiring:
Heavy Red to battery positive.
Heavy Black to Ground.
Orange to positive on Coil
Black to negative on coil
Violet(purple) to Positive on distributor-
Green to negative on distributor.
White wire NOT used.
I don't think there is any actual polarity in our distributor, but mine are wired, PIN toward FRONT purple, Pin toward BACK green.
If you are using the stock tachometer the is something needed to make it work right. Someone else will have to chime in on that.
Hoe this helps
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Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Sat Nov 13, 2021 10:36 am Post subject: |
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| OK, perfect. Thanks! |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Thu Dec 02, 2021 5:34 am Post subject: |
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Where do you guys get your clutch parts from?
Any recommendations on what we should use? |
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924RACR
Joined: 29 Jul 2001
Posts: 8889
Location: Royal Oak, MI, USA
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| Posted: Thu Dec 02, 2021 10:35 pm Post subject: |
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Been a while since I bought one, but we're using stock Sachs. Heard too many stories about bad aftermarket clutches from other racers... Centerforce comes to mind...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Fri Dec 03, 2021 3:43 am Post subject: |
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Understood, thanks!
We were thinking of using the South Bend Clutch Stage 2 Endurance kit.
Any thoughts on a flywheel? Ours is missing teeth..... |
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MikeJinCO
Joined: 08 Jun 2010
Posts: 1243
Location: Maysville, Colorado
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| Posted: Fri Dec 03, 2021 5:49 am Post subject: |
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I'm building a higher power NA motor so I quizzed morghen about the clutch he is using with his supercharged car. He said that the stock Sachs has been working well. Not knowing the cost of the South Bend unit I wouldn't spend extra to get it.
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Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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MikeJinCO
Joined: 08 Jun 2010
Posts: 1243
Location: Maysville, Colorado
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| Posted: Fri Dec 03, 2021 5:53 am Post subject: |
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I remember years back Raceboy kept a stock clutch in his turbocharged NA also.
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Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1400
Location: Washington DC area
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| Posted: Fri Dec 03, 2021 12:27 pm Post subject: |
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I've been running stock clutch discs in all my Porsche, BMW and Benz race cars for over 40 years. Never had any of the problems my competitors did with their fancy clutch packages.
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1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car |
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ChrisCXC
Joined: 18 Oct 2019
Posts: 19
Location: Los Angeles, CA
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| Posted: Tue Dec 07, 2021 3:26 am Post subject: |
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Great info guys, thanks.
Where do you guys like to get your stock clutches and flywheels from? Pelican (our normal supplier) seems to be out of stock. |
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hayeslewis
Joined: 21 Aug 2011
Posts: 74
Location: Alexandria, VA
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| Posted: Sat Feb 05, 2022 7:55 am Post subject: clutches flywheels |
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FCP euro has them. I've found them on ebay. You should be able to machine the flywheel.
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Hayes Lewis
1979 924 HP
1979 924 ITB/HP???
2007 Armada
2013 Hyundai Elantra
1972 MG Midget Vintage project
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