Yet again, looks like i did serious damage to a tranny
06-12-2010, 09:38 PM
#62
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I went through this when I built a th350 for a young guy I used to work with. I built it for his 3rd gen piece of **** with a 305 that you could out run with a bicycle.
I told him it'll handle anything his car could throw at it.
2 weeks later he brought it back with burned up forward clutches, no other problems. Clutch seals pressure test ok. I fixed it for free.
3 weeks later it stopped moving. He brought it back. It had a broken low roller, nothing else.
Couldn't figure out either failure. He wanted to know too. I told him either neutral dropping or trying to powerbrake it might cause these failures.
a week later we're on a job and he just busts out with "whats a neutral drop?"
I said thats where you rev the car up in neutral and just put it in drive at wot, thats what the **** you've been doing isn't it?!
He said, well yea, I've done it a few times because I couldn't get the tires to spin power braking.
You just never know.
I told him it'll handle anything his car could throw at it.
2 weeks later he brought it back with burned up forward clutches, no other problems. Clutch seals pressure test ok. I fixed it for free.
3 weeks later it stopped moving. He brought it back. It had a broken low roller, nothing else.
Couldn't figure out either failure. He wanted to know too. I told him either neutral dropping or trying to powerbrake it might cause these failures.
a week later we're on a job and he just busts out with "whats a neutral drop?"
I said thats where you rev the car up in neutral and just put it in drive at wot, thats what the **** you've been doing isn't it?!
He said, well yea, I've done it a few times because I couldn't get the tires to spin power braking.
You just never know.
06-12-2010, 10:30 PM
#63
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im not tranny genius or anything but it kinda sounds like there is something besides the hard parts going wrong, did you flush all the transmission fluid out before installing again, it might have some metal fragments in it causing the valve body to do some weird stuff, or maybe something wrong with the valve body itself. it just kinda seems weird that this has happened so many times to you, i had a 03 silverado with bolt-ons a tune and turnin 22's with nuttin done to the tranny but a corvette servo, a 93 k1500 with 33's and my car now all with 60e's in them and have never had a tranny prob and i beat the **** out of my cars, maybe u just got some bad luck with transmissions but somethin seems wrong here for sure.
06-13-2010, 01:05 AM
#65
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is there any possiblity that the driveshaft is warped? A few yrs ago I built a th400 for a guy in a c-10 with a 434sbc trans worked they didnt tighten the straps on the DS and it slung it. They put the same DS back and the case broke the next day and of course it was my fault lol. After some choice words back and forth they decided theydidnt want e to build them another one, so they installed one from another builder. This trans lasted about 2 hours and was all ove rthe road the only thing left on the motor was the bell cracked of course the inout drum and the converter lol so I said to them well was this builder a POS also? come to find out the DS was bent from the initial sling out so this ordeal kinda put a hinder on a long time freindship because they were quik to bad mouth me when the whole time it was thier mistake anyway. point being that I am sorry there is something else going on besides builder error here. I have also had a bad MAF destroy a unit also 4 times would completely tear the 3-4 clutches off the backing there would be perfect 3-4 pack metrial in the filter lol. P-built built the unit then Circle D went back into it and thse are both reputable builder IMO so is FLT and RPM to name a few others. I think if it was a tranny issue that circle D would have seen it there are telltale signs of a problem in these units when you pullthem apart they are really not rocket science. I have been building thse 60s for at least 10 yrs and have them myself in mid 9 sec vettes. I think before you give up you really need to look at the car cause if other stuff isnt right you are gonna have afragged 80 also. Get the unit fixed put the PCM back to stock check the DS make sure there is no buildup on the mating surface of the bell to the block make sure there is enough converter endplay I think you may find something in these areas.
06-13-2010, 01:26 PM
#66
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honestly i dont think im that hard on it, with all that converter i dont need to be and it still goes way faster than most people drive lol
I NEVER neutral drop, thats what a 3400 rpm Circle D stall is for and it works fantastic, and I dont power brake it either. I have Wilwood's on the back and rear tires are bigger too so it wont powerbrake, the brakes are too strong.
Its Circle D man, they flushed everything every time. I do have bad luck with trannys, and i agree, somethings fishy here. Glen@Circle D told me on the phone minutes after it broke he thinks were missing something too.
Its possible i suppose, although i put a different DS in it about a month ago with the 12 bolt install, ill damn sure check though, thank you.
im not tranny genius or anything but it kinda sounds like there is something besides the hard parts going wrong, did you flush all the transmission fluid out before installing again, it might have some metal fragments in it causing the valve body to do some weird stuff, or maybe something wrong with the valve body itself. it just kinda seems weird that this has happened so many times to you, i had a 03 silverado with bolt-ons a tune and turnin 22's with nuttin done to the tranny but a corvette servo, a 93 k1500 with 33's and my car now all with 60e's in them and have never had a tranny prob and i beat the **** out of my cars, maybe u just got some bad luck with transmissions but somethin seems wrong here for sure.
Its possible i suppose, although i put a different DS in it about a month ago with the 12 bolt install, ill damn sure check though, thank you.
06-13-2010, 02:24 PM
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[
Its possible i suppose, although i put a different DS in it about a month ago with the 12 bolt install, ill damn sure check though, thank you.[/QUOTE]
another thing to check make sure th driveshaft isnt rammed up into the rear of the tranny how much slip do you have on the front yoke is the driveshaft too long maybe just dome other things to throw out there
Its possible i suppose, although i put a different DS in it about a month ago with the 12 bolt install, ill damn sure check though, thank you.[/QUOTE]
another thing to check make sure th driveshaft isnt rammed up into the rear of the tranny how much slip do you have on the front yoke is the driveshaft too long maybe just dome other things to throw out there
06-13-2010, 03:32 PM
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DS is bone stock aluminum ones.
Bro Inc, look back through this thread and youll see some killer carnage pics lol. this thread started at the very first failure, detailed em all as theyve happened
Bro Inc, look back through this thread and youll see some killer carnage pics lol. this thread started at the very first failure, detailed em all as theyve happened
06-13-2010, 06:23 PM
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Yes, I've followed.
First you had the forward sprag go bad. I'm asking if, at that time, anyone checked the rest of the transmission.
Like all the other broken parts 3 days later?
I'm saying to pull the fwd sprag out and replace it is fairly easy without getting into the rest of the transmission. The fwd sprag may have rolled over because the planetaries, that later broke, were failing the first time and took the fwd sprag out. It's a long shot I know but I don't know.
You don't let the girlfriend drive it do you? valet parking, little brother....
First you had the forward sprag go bad. I'm asking if, at that time, anyone checked the rest of the transmission.
Like all the other broken parts 3 days later?
I'm saying to pull the fwd sprag out and replace it is fairly easy without getting into the rest of the transmission. The fwd sprag may have rolled over because the planetaries, that later broke, were failing the first time and took the fwd sprag out. It's a long shot I know but I don't know.
You don't let the girlfriend drive it do you? valet parking, little brother....
at the sprag failure i doubt anything was checked but when the rest got chunked i would assume Circle D looked deeper into what and why it was continually failing. Ill ask on Monday, but im thinking a lot more needs to be checked, as in everything lol.
