Coan turbo 350 XLT

Mike Taylor 3601 · 08-28-2009, 03:56 PM

On 1-2 shift intermediate drum has to swap directions,thats why supposed to start burnout in 2nd
and not shift from high to neutral (rev. pattern) at any speed besides stopped.that is what destroys
intermediate sprags on th 350 rev. pattern.
Mike Taylor3601

chevy620 · 08-28-2009, 05:28 PM

Quote:

Originally Posted by Mike Taylor 3601

On 1-2 shift intermediate drum has to swap directions,thats why supposed to start burnout in 2nd
and not shift from high to neutral (rev. pattern) at any speed besides stopped.that is what destroys
intermediate sprags on th 350 rev. pattern.
Mike Taylor3601

We have a reverse pattern 350 in our bracket car. I am dropping it into neutral when I get the speed slowed down to 60-70 mph.... this is NOT a good idea then? It seems to go right through to neutral.

Mike Taylor 3601 · 08-29-2009, 02:34 PM

That's what Coan told me said you couldn't shift from high to neutral without trans not trying to swap
directions on intermediate drum not mention how many cars have been crashed by getting put
in rev by accident most had rev lockout but got past somehow.Coan has clean neutral on some
trans I've seen where has a second neutral past high gear {rev. pattern}
Mike Taylor 3601

J Simoneaux · 08-30-2009, 06:51 PM

has anyone ever compared the A1 pro-flites (or whoever makes them now) with the coan XLT 350?

ken robinson · 08-31-2009, 11:07 AM

I thought the top stock Coan 350 xlt with double " N " shift pattern was designed / built so you could shift into " N " in the shut down and click off the motor ? Looks like a nice piece but I don't no anyone who runs one or how many runs you can get out of one ? Did call Coan and what did they say ? .....

buzzinhalfdozen · 08-31-2009, 11:36 AM

My trans has the "clean" nuetral, that's not an issue just can't keep intermediate clutches in it.I'm hoping that the latest "fix" is the cure. Now I've been told that adding the third disc is going to slow me down, I'm not really grasping the idea however I've been told this by a few trans guys. Since I still have clearence in my clutch pack I'm unable to understand how this is going to slow me down. Can someone explain? Joe

Mike Taylor 3601 · 08-31-2009, 11:38 AM

That's right clean neutral is to shut down in neutral without trans damage or risk of accidently shift
in reverse. Joe, sounds like one of those problems ''nobody else'' has had I've
been there before I don't know you but from reading you're post/replies for awhile
I say you have the abilities to figure it out. You may air test piston in drum
thats giving trouble see if releases as quick as others or you can stack assm.of drums like trans was together,except outside of case and apply air through pump
passages and check how things are working.I found problem in 350TH that way
once.I also used mitchell manual told when this was applied for this gear that was applied for that gear etc.could help track down problem.

Mike Taylor 3601

ken robinson · 09-06-2009, 10:01 AM

Joe , adding the 3rd clutch disc to the intermediate pack may not slow you down . You may not have enough points of contact/clutch suface area and is a possible answer as to why you are burning them up or driving through the clutch pack . I like Mikes idea on the bench test with pressure regulators . Or at lest fluid psi gage on the trans case to make shore you got the pressure you need . Its not enough clutch or not enough pressure .Good luck Joe let us know what the fit was . Ken R

08-28-2009, 03:56 PM	#1
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 306 Times in 103 Posts	Re: Coan turbo 350 XLT On 1-2 shift intermediate drum has to swap directions,thats why supposed to start burnout in 2nd and not shift from high to neutral (rev. pattern) at any speed besides stopped.that is what destroys intermediate sprags on th 350 rev. pattern. Mike Taylor3601

08-29-2009, 02:34 PM	#3
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 306 Times in 103 Posts	Re: Coan turbo 350 XLT That's what Coan told me said you couldn't shift from high to neutral without trans not trying to swap directions on intermediate drum not mention how many cars have been crashed by getting put in rev by accident most had rev lockout but got past somehow.Coan has clean neutral on some trans I've seen where has a second neutral past high gear {rev. pattern} Mike Taylor 3601

08-30-2009, 06:51 PM	#4
J Simoneaux Junior Member Join Date: Jul 2009 Posts: 1 Likes: 0 Liked 0 Times in 0 Posts	Re: Coan turbo 350 XLT has anyone ever compared the A1 pro-flites (or whoever makes them now) with the coan XLT 350?

08-31-2009, 11:07 AM	#5
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 479 Likes: 74 Liked 215 Times in 86 Posts	Re: Coan turbo 350 XLT I thought the top stock Coan 350 xlt with double " N " shift pattern was designed / built so you could shift into " N " in the shut down and click off the motor ? Looks like a nice piece but I don't no anyone who runs one or how many runs you can get out of one ? Did call Coan and what did they say ? .....

08-31-2009, 11:36 AM	#6
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: Coan turbo 350 XLT My trans has the "clean" nuetral, that's not an issue just can't keep intermediate clutches in it.I'm hoping that the latest "fix" is the cure. Now I've been told that adding the third disc is going to slow me down, I'm not really grasping the idea however I've been told this by a few trans guys. Since I still have clearence in my clutch pack I'm unable to understand how this is going to slow me down. Can someone explain? Joe __________________ Joe Buchanan SS/BX 3117

08-31-2009, 11:38 AM	#7
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 306 Times in 103 Posts	Re: Coan turbo 350 XLT That's right clean neutral is to shut down in neutral without trans damage or risk of accidently shift in reverse. Joe, sounds like one of those problems ''nobody else'' has had I've been there before I don't know you but from reading you're post/replies for awhile I say you have the abilities to figure it out. You may air test piston in drum thats giving trouble see if releases as quick as others or you can stack assm.of drums like trans was together,except outside of case and apply air through pump passages and check how things are working.I found problem in 350TH that way once.I also used mitchell manual told when this was applied for this gear that was applied for that gear etc.could help track down problem. Mike Taylor 3601 Last edited by Mike Taylor 3601; 08-31-2009 at 11:58 AM.

09-06-2009, 10:01 AM	#8
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 479 Likes: 74 Liked 215 Times in 86 Posts	Re: Coan turbo 350 XLT Joe , adding the 3rd clutch disc to the intermediate pack may not slow you down . You may not have enough points of contact/clutch suface area and is a possible answer as to why you are burning them up or driving through the clutch pack . I like Mikes idea on the bench test with pressure regulators . Or at lest fluid psi gage on the trans case to make shore you got the pressure you need . Its not enough clutch or not enough pressure .Good luck Joe let us know what the fit was . Ken R