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#1 |
Senior Member
Join Date: Dec 2001
Location: Elysburg, Pa
Posts: 733
Likes: 361
Liked 327 Times in 121 Posts
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I run valve bodies that hold the low and reverse band in first, even if you break the sprag you'll never turn that drum fast enough with a band holding it to explode the drum. Those valve bodies that don't hold the band should be thrown out.
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#2 |
Senior Member
Join Date: Sep 2006
Location: Fulton County, PA
Posts: 617
Likes: 17
Liked 920 Times in 259 Posts
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People have been preaching to these guys for years. And plenty of them reply "been doing it my way for years and nothing ever happened".
No need for this to happen. With no low band apply in low gear, and the roller clutch completely fails under load in low gear, the engine freewheels. At somewhere north of 5000RPM x low gear ratio - 12000+RPM - the cast OE front drum explodes. The use of an aftermarket steel or aluminum drum and/or a low band apply valve body, prevents this from happening if the roller clutch fails. Just because the car moves in low gear doesn't mean the roller clutch hasn't failed. I've seen them in transmissions that came out of a car - that was being driven but had the rear end recently broken and repaired - with half the springs mashed and only half of the elements holding. This can happen with a 904, but the 727 is the one with the heavy OE drum that blows up. Failing to follow instructions for how to drive the car and/or a driveline or rear end failure under load in low gear will kill the roller clutch. Sometimes it still works well enough to get it into the water or to the starting line, with ugly results. |
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#3 |
Member
Join Date: Dec 2018
Location: Massachusetts
Posts: 177
Likes: 205
Liked 253 Times in 95 Posts
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Glad to here the drivers are ok. I guess I was mistaken on the truck.
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George Mirza D/SA 1236 ‘71 Duster 340 |
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#4 |
Member
Join Date: Dec 2001
Location: tomsriver nj
Posts: 479
Likes: 74
Liked 224 Times in 87 Posts
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It was good to be at there track . See some friends .I broke a brand new trans on the first pass mid track ( planitary ? ) rev limiter saved the new motor , I was told the M200 was faster than my coan TH350 , fast alright as in it put me on the trailer fast . At least no oil down , no guard rail or taking somebody else out . Didn't bring a spair so just hung out sat , headed home sun & swaped out trans ready for epping hopefully
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#5 |
Live Reporter
Join Date: Dec 2000
Posts: 4,866
Likes: 462
Liked 16,606 Times in 1,527 Posts
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Hey Ken, sorry to here about your bad luck. Yesterdays eliminations finished around midnight, and with 344 cars and lots of down time The track did a great job getting it all done.
Forgive me as I don't know who the winners are as am not familiar with there names. I do know Jeanne Linke went 5 rounds in Pro in her Stocker and Anthony Fetch went to the quarters I believe, and Dan Northrup went to the semis in Super Pro. Here are some tight finish line shots from this mornings first round in Pro. |
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#6 |
Live Reporter
Join Date: Dec 2000
Posts: 4,866
Likes: 462
Liked 16,606 Times in 1,527 Posts
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Next batch....
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#7 |
VIP Member
Join Date: Feb 2006
Location: Dela-where?
Posts: 2,195
Likes: 1,162
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Thanks Ken got a good shot of me getting spanked. (The 2 mopars running I’m the orange/black). Some tough racing here for sure
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KEITH MAYERS 2-1/2 X somebody Still many X nobody |
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