 Case question for possible location for crank trigger |
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| technicalninja |
 Mar 4 2023, 02:45 PM
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#1
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Advanced Member  Group: Members Posts: 2,531 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region 
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What was the original use for the large hole on the flywheel side of the right (passenger) engine case?
Looks like it could have been a good flywheel lock location. To me it looks like very good spot for a crankshaft position sensor... What was its original reason for being there? |
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| technicalninja |
Mar 5 2023, 10:32 AM
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Advanced Member Group: Members Posts: 2,531 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region
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Wow, you did it the HARD way...
20 years ago, there was limited stand-alone equipment and I understand why you did it that way. How many slots did you have to cut into that flywheel? What a PIA! I'm planning to use the holes for the clutch bolts (they are symmetrical at 60 degrees) to trigger a MS3x. The stock flywheel might give me trouble (because of the extra balancing holes) but an aftermarket conversion flywheel appears to have only the holes for the clutch plate. The MS3 can trigger on either the leading or trailing signal from the sensor and you can apply any offset you desire. The distributor can be turned into a cam sensor and I have both sensors figured out now. I'm buying one of the unilights in the for-sale forum as it should be gravy to make into a cam sensor set up. I DO need to come visit you. I wish "Vulcan Mind Meld" was a real thing... |
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| ClayPerrine |
Mar 5 2023, 07:27 PM
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#3
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Life's been good to me so far..... Group: Admin Posts: 16,491 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(technicalninja @ Mar 5 2023, 10:32 AM)  Wow, you did it the HARD way... 20 years ago, there was limited stand-alone equipment and I understand why you did it that way. How many slots did you have to cut into that flywheel? What a PIA! I'm planning to use the holes for the clutch bolts (they are symmetrical at 60 degrees) to trigger a MS3x. The stock flywheel might give me trouble (because of the extra balancing holes) but an aftermarket conversion flywheel appears to have only the holes for the clutch plate. The MS3 can trigger on either the leading or trailing signal from the sensor and you can apply any offset you desire. The distributor can be turned into a cam sensor and I have both sensors figured out now. I'm buying one of the unilights in the for-sale forum as it should be gravy to make into a cam sensor set up. I DO need to come visit you. I wish "Vulcan Mind Meld" was a real thing... The early GM DIS ignition only had six slots to cut in the flywheel, plus one for the sync pulse at top dead center. I stuck a sharpie in the hole and spun the motor to get a center line for the slots. Then I chucked up the flywheel in a rotary table and machined a slot that was wider than the hole at 60 degree intervals, and one for they sync pulse. (IMG:http://www.914world.com/bbs2/uploads_offsite/4.bp.blogspot.com-1143-1678066024.1.gif) I turned an adapter on the lathe, and mounted the pickup in the case. It was a fairly simple operation. I had the throttle body and fuel injection system from an olds quad 4 to use. I just needed to machine an intake that would hook to the 914 runners and mount the throttle body. It would have been unique..... |
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Posts in this topic
technicalninja Case question for possible location for crank trigger Mar 4 2023, 02:45 PM
ClayPerrine
What was the original use for the large hole on t... Mar 4 2023, 08:03 PM ogdougy Just to be the devils advocate. Why not just get a... Mar 5 2023, 11:31 AM GregAmy https://thedubshop.com/crank-trigger-package-type-... Mar 5 2023, 11:56 AM technicalninja Thanks for other options guys.
The set up I have ... Mar 5 2023, 01:05 PM technicalninja One of the real early uses of coil on plug!
W... Mar 6 2023, 08:49 AM nditiz1 I'm not sure if Original Customs still makes t... Mar 6 2023, 09:00 AM Eric_Shea We use the DubShop units if the engine is out. We... Mar 6 2023, 09:26 AM technicalninja Eric, thanks for the tips!
My first ideas for... Mar 6 2023, 10:45 AM
ogdougy
Most of the OEMs have moved to directly on whate... Mar 6 2023, 12:24 PM Eric_Shea Way too much thinking for a T4 ;) Mar 6 2023, 12:46 PM r_towle once you put the motor together, the cam timing an... Mar 6 2023, 12:52 PM technicalninja
I think you are over estimating the "jitter... Mar 6 2023, 12:52 PM technicalninja
Way too much thinking for a T4 ;)
I slowly com... Mar 6 2023, 01:00 PM r_towle I have a few questions.
I get the install of the c... Mar 6 2023, 01:06 PM ClayPerrine Zims is building a drop in EFI kit for the 914. I... Mar 6 2023, 02:44 PM nditiz1 SOT: As someone that has done a 6 conversion...I w... Mar 6 2023, 03:25 PM technicalninja
Zims is building a drop in EFI kit for the 914. ... Mar 6 2023, 09:08 PM ClayPerrine
Zims is building a drop in EFI kit for the 914. ... Mar 7 2023, 06:30 AM technicalninja Yep, actually I'll use a GM flex fuel sensor a... Mar 7 2023, 02:52 PM ClayPerrine
Yep, actually I'll use a GM flex fuel sensor ... Mar 7 2023, 03:21 PM technicalninja My first 914 was a rusted out 70 1.7 with a 1911??... Mar 7 2023, 04:09 PM |
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