Coan turbo 350 XLT

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

buzzinhalfdozen · 09-08-2009, 06:55 AM

Well as I suspected the 3rd disc did not slow the car in fact it made some of it's fastest runs ever. We have 7 runs on it so far I'll let it go to 25-30 then tear down for inspection. Did not notice any ill effects from the clutch pack rearrangement, hopefully it will look good at tear down. Joe

69ssea · 09-09-2009, 08:31 AM

We had the same problem with our XLT. Added third clutch and now it looks like new after 100 runs. Also removed the O-rings from the steels.

Phil Unruh
52 SS/EA

08-31-2009, 11:38 AM	#1
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,374 Likes: 358 Liked 308 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	#2
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 479 Likes: 74 Liked 224 Times in 87 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

09-08-2009, 06:55 AM	#3
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 Well as I suspected the 3rd disc did not slow the car in fact it made some of it's fastest runs ever. We have 7 runs on it so far I'll let it go to 25-30 then tear down for inspection. Did not notice any ill effects from the clutch pack rearrangement, hopefully it will look good at tear down. Joe __________________ Joe Buchanan SS/BX 3117

09-09-2009, 08:31 AM	#4
69ssea Junior Member Join Date: Oct 2006 Location: kansas Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: Coan turbo 350 XLT We had the same problem with our XLT. Added third clutch and now it looks like new after 100 runs. Also removed the O-rings from the steels. Phil Unruh 52 SS/EA