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Re: Two Piece Crank--440 go BOOM! [Re: 70Dustmite440] #1742815 02/04/15 10:12 AM 02/04/15 10:12 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	727 burn outs- Always start in 2nd--quick shiftto 3rd gets wheel speed up fast and the sprag is safe do one in first and when the wheels hit dry and chirp that sprag gets Whammed!!! Sooner or later it fails--it is press fit into case and has a small set screw to keep it from spinning--the bolt ins are a repair item not fool proof at all IMO. Most Mopar guys have blown at least one before we discovered the weak link NO first gear burn outs and you are safe as can be.

Re: Two Piece Crank--440 go BOOM! [Re: ] #1742816 02/04/15 01:06 PM 02/04/15 01:06 PM
Joined: Apr 2003 Posts: 2,708 jax. fla. 70Dustmite440 master
70Dustmite440 master Joined: Apr 2003 Posts: 2,708 jax. fla.	I'll see what I can do Heyy Big Todd and David, this is Eric from down in Jax FL. 8418705-WP_20150124_013.jpg (53 downloads)

Re: Two Piece Crank--440 go BOOM! [Re: 70Dustmite440] #1742817 02/04/15 01:08 PM 02/04/15 01:08 PM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: I still start my burnout in first, either i'm too old to change my ritual or my engines are too weak starting in second... or both I do too but always shift up when the tires are going without exception. "I think its got a hemi"

Re: Two Piece Crank--440 go BOOM! [Re: gdonovan] #1742818 02/04/15 07:49 PM 02/04/15 07:49 PM
Joined: Mar 2006 Posts: 9,831 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,831 MI, usa	I don't ever let the tires chirp. I'm out of the throttle as soon as it's rolling out of the water (3rd gear). Doug

Re: Two Piece Crank--440 go BOOM! [Re: dvw] #1742819 02/04/15 07:52 PM 02/04/15 07:52 PM
Joined: Jul 2006 Posts: 4,179 California mickm master
mickm master Joined: Jul 2006 Posts: 4,179 California	so i know very little about automatics, what is the problem with doing a burnout in first gear?

Re: Two Piece Crank--440 go BOOM! [Re: mickm] #1742820 02/04/15 07:54 PM 02/04/15 07:54 PM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: so i know very little about automatics, what is the problem with doing a burnout in first gear? The problem is the tires getting traction and the sudden stop in first will damage the overrunning clutch, explosion can follow. In simple terms. "I think its got a hemi"

Re: Two Piece Crank--440 go BOOM! [Re: gdonovan] #1742821 02/04/15 07:59 PM 02/04/15 07:59 PM
Joined: Jul 2006 Posts: 4,179 California mickm master
mickm master Joined: Jul 2006 Posts: 4,179 California	Quote: Quote: so i know very little about automatics, what is the problem with doing a burnout in first gear? The problem is the tires getting traction and the sudden stop in first will damage the overrunning clutch, explosion can follow. In simple terms. ok, makes perfect sense, with what little i know! so i guess that would be true for any automatic, modified or not?

Re: Two Piece Crank--440 go BOOM! [Re: mickm] #1742822 02/04/15 08:04 PM 02/04/15 08:04 PM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: so i guess that would be true for any automatic, modified or not? I just know Chrysler, can't speak for GM or Ford. Even the race units with bolt in sprags or the later RWD OD units (which also have a bolt in sprag) it would be a bad idea to shock the drivetrain in first gear. Just a roller and spring arrangement that does not take kindly to the abuse. "I think its got a hemi"

Re: Two Piece Crank--440 go BOOM! [Re: mickm] #1742823 02/04/15 08:12 PM 02/04/15 08:12 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Quote: so i know very little about automatics, what is the problem with doing a burnout in first gear? The problem is the tires getting traction and the sudden stop in first will damage the overrunning clutch, explosion can follow. In simple terms. ok, makes perfect sense, with what little i know! so i guess that would be true for any automatic, modified or not? Not really... a STOCK VB has the LBA(low band apply) a RMVB with out LBA the low band isnt applied if just in drive... if you pull it down into low(1st) then it applies the band... the thing with the over running clutch is.. if the tires are spinning and the ORC(over running clutch.. or known as the sprag) it can load and unload... that forward SLAM on it can break it... usually the next hard load on it just blows the ORC then.. (this is the important part) the forward drum will turn 2.2 times faster than the engine rpm... pretty much anything over 6200 engine rpm and the drum will centrifugally explode... hope that gives you a idea of what happens EDIT If you start in 2nd with a MRVB(or just a manual VB) you are not using the ORC so you dont have the issue low gear is a issue on the 727.. thats why its advised to get out of it ASAP.... never pedal a 727 in low.. shift first Last edited by MR_P_BODY; 02/04/15 08:18 PM.

Re: Two Piece Crank--440 go BOOM! [Re: MR_P_BODY] #1742824 02/04/15 08:20 PM 02/04/15 08:20 PM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Thanks Mr.P, been awhile since I heard the explanation, seen plenty of pics of the results though! "I think its got a hemi"

Re: Two Piece Crank--440 go BOOM! [Re: gdonovan] #1742825 02/04/15 08:31 PM 02/04/15 08:31 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Thanks Mr.P, been awhile since I heard the explanation, seen plenty of pics of the results though! Thats a lot of typing for me so I think I got it all right.. the big thing is get out of low ASAP... second and high arent a issue... and NEVER pedal in low.. that is when you slam the ORC... shift first

Re: Two Piece Crank--440 go BOOM! [Re: MR_P_BODY] #1742826 02/04/15 09:03 PM 02/04/15 09:03 PM
Joined: Jul 2006 Posts: 4,179 California mickm master
mickm master Joined: Jul 2006 Posts: 4,179 California	Quote: Quote: Thanks Mr.P, been awhile since I heard the explanation, seen plenty of pics of the results though! Thats a lot of typing for me so I think I got it all right.. the big thing is get out of low ASAP... second and high arent a issue... and NEVER pedal in low.. that is when you slam the ORC... shift first ok, did get most of that, but what do you mean "pedal in low"?

Re: Two Piece Crank--440 go BOOM! [Re: mickm] #1742827 02/04/15 09:08 PM 02/04/15 09:08 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Quote: Thanks Mr.P, been awhile since I heard the explanation, seen plenty of pics of the results though! Thats a lot of typing for me so I think I got it all right.. the big thing is get out of low ASAP... second and high arent a issue... and NEVER pedal in low.. that is when you slam the ORC... shift first ok, did get most of that, but what do you mean "pedal in low"? On and off the gas.. that is when the ORC will load and unload.. the loading can break it... if it unloads in low.. shift before you get back on it

Re: Two Piece Crank--440 go BOOM! [Re: MR_P_BODY] #1742828 02/04/15 09:56 PM 02/04/15 09:56 PM
Joined: Jul 2006 Posts: 4,179 California mickm master
mickm master Joined: Jul 2006 Posts: 4,179 California	Quote: Quote: Quote: Quote: Thanks Mr.P, been awhile since I heard the explanation, seen plenty of pics of the results though! Thats a lot of typing for me so I think I got it all right.. the big thing is get out of low ASAP... second and high arent a issue... and NEVER pedal in low.. that is when you slam the ORC... shift first ok, did get most of that, but what do you mean "pedal in low"? On and off the gas.. that is when the ORC will load and unload.. the loading can break it... if it unloads in low.. shift before you get back on it

Re: Two Piece Crank--440 go BOOM! [Re: mickm] #1742829 02/04/15 10:52 PM 02/04/15 10:52 PM
Joined: Mar 2010 Posts: 984 Tennessee H Hemi ragtop super stock
Hemi ragtop super stock H Joined: Mar 2010 Posts: 984 Tennessee	I am running a Turbo Action "auto" valve body, extra line pressure etc. In drive, do I have to worry about the tires spinning and then hooking while the shifter is in Drive and the trans is still in low? Side note, I am also using an A&A sprag etc. Last edited by Hemi ragtop; 02/04/15 10:54 PM.

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