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04-15-2013, 02:28 PM | #41 |
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Re: Manual Trannys
I started with zero knowledge using a soft-lok 10.5" and then stepped up to a Magforce dual 8". Along the way all I got was "take more base out of it" from the race department. I didn't have any guidance. I learned the cause and effect of doing this and doing that. So for that, the experience was invaluable. But man, there was a lot of busted knuckles along the way!
I then went with a Sportsman single 10". As is not uncommon, but few will admit, I burned up two of those pricey clutches because I didn't follow the directions! I finally realized what the problem was. I was measuring throw-out bearing clearance the old way; moving the pedal and / or shift fork linkage, whatever, and convincing myself I had plenty of clearance between the levers and the TO bearing. The levers on the Sportsman unit move differently than the Soft-lok I was accustomed to. Bottom line was there was not the clearance I thought I had and when you take the base pressure down and there's not enough clearance, you slip the disk massively. And as many others do, but won't admit, I stayed on the throttle much to long. John Calvert asked me why. I stuttered and finally admitted, "because you think it's going to fix itself!" To that, he agreed and said he'd been there, done that also! Now I know what to do and what not to do. I simply worked the clutch until I could make 1320 / MPH equaled the optimum ET. I still don't have a data logger but that would be an invaluable tool. Now, I'm convinced I could help a newbie that was local and have a clutch pretty much dialed in within 2-3 days of track time. I plan on getting a data logger and that will be an entirely new learning curve for me but I'm up for the challenge.
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Jeff Lee 7494 D/S '70 AMX |
04-15-2013, 03:23 PM | #42 | |
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Re: Manual Trannys
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Leave Ed alone he's been racing longer than I've been alive (sorry Ed I couldn't resist) raced all kinds of cars sticks and autos. We have fun all the time with it. He says im crazy and I tell him to get rid of that junk auto. All in fun.
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Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development |
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04-15-2013, 03:30 PM | #43 | |
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Re: Manual Trannys
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Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development |
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04-16-2013, 01:05 AM | #44 |
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Re: Manual Trannys
They told me if I built my 68 Impala with a Big Block and a stick it would break parts (too heavy). Close to 100 passes on car when i had it, only broken part were rear gears on pass #18, they were "street gears" I used Pro gears after that. Racing weight was 4095 pounds.
11.70's in I/S I used a Jerico. I am building a 65 Imp, same combination w/ 396/325 Will Lamprecht |
04-16-2013, 11:52 PM | #45 | |
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Re: Manual Trannys
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Don't you know your 10 Commandments? "Though shall not shift without clutch engagement"
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Sean Fischer 5864 SS/E |
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04-16-2013, 11:55 PM | #46 |
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Re: Manual Trannys
Manual Transmission-CHECK!
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Sean Fischer 5864 SS/E |
04-16-2013, 11:57 PM | #47 | |
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Re: Manual Trannys
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Sean Fischer 5864 SS/E |
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04-19-2013, 09:52 PM | #48 |
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Re: Manual Trannys
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04-21-2013, 05:00 PM | #49 |
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Re: Manual Trannys
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04-21-2013, 09:26 PM | #50 |
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Re: Manual Trannys
There is no such thing as a stupid question. That is how we all learn.
What this refers to is not enough holding pressure. The clutch does not have enough base pressure to control the slip. So the clutch is slipping more than what was intended. Hope this helps. Sean
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Sean Marconette 84 Mustang 5060 SS/N |
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