727 front clutch clearance? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer 727 front clutch clearance?

Print Thread

727 front clutch clearance? #1438950 05/19/13 05:10 PM 05/19/13 05:10 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Going through my 727 and the front clutch clearance is only .068" The wavy washer is .051, clutches are .061 and steels are .068. Is this acceptable for a street performance car? The FSM wants .088-.106". I've done some looking online and those parts seem to be std/low thickness. The pressure plate measures .068, again seems normal. Thanks, Steve

Re: 727 front clutch clearance? [Re: Skeptic] #1438951 05/19/13 05:39 PM 05/19/13 05:39 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	How many clutches. The wavy washer kinda adds some clearance I don't use it in the front clutches just the rear. on the front clutches you generally go .015 per set of frictions so I'm thinking .068 should be fine especially with a wavy washer in the mix! I'll recheck my book!

Re: 727 front clutch clearance? [Re: Dodgem] #1438952 05/19/13 07:22 PM 05/19/13 07:22 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	4 clutches, I've got the A@A select snap ring set, they are flat, the thinnest one was worse didn't right down the number though.

Re: 727 front clutch clearance? [Re: Skeptic] #1438953 05/20/13 09:06 PM 05/20/13 09:06 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot

Re: 727 front clutch clearance? [Re: Skeptic] #1438954 05/20/13 11:23 PM 05/20/13 11:23 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Guess I better check my book!

Re: 727 front clutch clearance? [Re: Skeptic] #1438955 05/21/13 05:05 PM 05/21/13 05:05 PM
Joined: Jan 2003 Posts: 75,092 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,092 A Banana Republic near you.	Quote: Going through my 727 and the front clutch clearance is only .068" The wavy washer is .051, clutches are .061 and steels are .068. Is this acceptable for a street performance car? The FSM wants .088-.106". I've done some looking online and those parts seem to be std/low thickness. The pressure plate measures .068, again seems normal. Thanks, Steve Pressure plate is .068 ??? that's way to thin , typo ? The factory clearance is usually on the large side. did you have any issue with it like that ? I'd ditch the wavy snap ring for a flat ring of the same thickness.

Re: 727 front clutch clearance? [Re: Skeptic] #1438956 05/21/13 06:45 PM 05/21/13 06:45 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Quote: 4 clutches, I've got the A@A select snap ring set, they are flat, the thinnest one was worse didn't right down the number though.- referring to the final clearance Yes, that should read .680". I may just chuck the PP in a lathe and cut the o.d to get the correct min clearance. Thanks again, Steve

Re: 727 front clutch clearance? [Re: Skeptic] #1438957 05/22/13 12:32 AM 05/22/13 12:32 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	Nomally the wavy snap ring goes on the rear (Direct) clutch, and a flat snap ring in the front clutch.

Re: 727 front clutch clearance? [Re: Skeptic] #1438958 05/22/13 09:30 AM 05/22/13 09:30 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	I've seen the pressure plates turned just around the the outer edge on top to allow more clearance or even clutches just in about 3/8 on the outside on one side. flat snap ring as said above wavy is normally on rear clutches as they are applied all the time save for reverse. performance says .015 per set of clutches stole this from john 7714919-6211068-Thinplate.jpg (528 downloads) Last edited by Dodgem; 05/22/13 09:38 AM.

Re: 727 front clutch clearance? [Re: Skeptic] #1438959 05/22/13 09:56 AM 05/22/13 09:56 AM
Joined: Jan 2003 Posts: 75,092 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,092 A Banana Republic near you.	Quote: Quote: 4 clutches, I've got the [Email]A@A[/Email] select snap ring set, they are flat, the thinnest one was worse didn't right down the number though.- referring to the final clearance Yes, that should read .680". I may just chuck the PP in a lathe and cut the o.d to get the correct min clearance. Thanks again, Steve Once again, are you having an overlap issue ?

Re: 727 front clutch clearance? [Re: JohnRR] #1438960 05/22/13 10:42 AM 05/22/13 10:42 AM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Quote: Once again, are you having an overlap issue ? It's a new rebuild never been in the car, bought the trans as a core.

Re: 727 front clutch clearance? [Re: Skeptic] #1438961 05/22/13 10:46 AM 05/22/13 10:46 AM
Joined: Jan 2003 Posts: 75,092 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,092 A Banana Republic near you.	I'll have to check my notes to see what I set the last one I did at , but I don't think you should have to be cutting the pressure plate with a .051 snap ring, But if you are cutting the plate I would cut it so you can uses a thicker ssnap ring , the thicker the snap ring the better. Are you sure on that .680 number?

Re: 727 front clutch clearance? [Re: JohnRR] #1438962 05/22/13 03:28 PM 05/22/13 03:28 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Positive on the .680" number. I've looked @ 2 different FSMs the '72- where I got the clearance #s I posted first, the '68 that I checked this A.M. shows a much wider range of clearances. They are both consistent in showing the wavy washer in the front drum and the flat in the rear.

Re: 727 front clutch clearance? [Re: Dodgem] #1438963 05/22/13 03:31 PM 05/22/13 03:31 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Quote: I've seen the pressure plates turned just around the the outer edge on top to allow more clearance or even clutches just in about 3/8 on the outside on one side. flat snap ring as said above wavy is normally on rear clutches as they are applied all the time save for reverse. performance says .015 per set of clutches stole this from john That looks like what I was thinking about, but I'd only cut enough to get adequate clearance- with a flat snap ring.

Re: 727 front clutch clearance? [Re: Skeptic] #1438964 05/22/13 04:19 PM 05/22/13 04:19 PM
Joined: Jan 2003 Posts: 75,092 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,092 A Banana Republic near you.	Quote: Positive on the .680" number. I've looked @ 2 different FSMs the '72- where I got the clearance #s I posted first, the '68 that I checked this A.M. shows a much wider range of clearances. They are both consistent in showing the wavy washer in the front drum and the flat in the rear. the wavy washer should be in the front (direct) clutch and a flat in the rear (forward) clutch

Re: 727 front clutch clearance? [Re: JohnRR] #1438965 05/22/13 05:10 PM 05/22/13 05:10 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Quote: Quote: Positive on the .680" number. I've looked @ 2 different FSMs the '72- where I got the clearance #s I posted first, the '68 that I checked this A.M. shows a much wider range of clearances. They are both consistent in showing the wavy washer in the front drum and the flat in the rear. the wavy washer should be in the front (direct) clutch and a flat in the rear (forward) clutch That's what I thought. I may have mis-read the 2 people that seemed to post the opposite.

Re: 727 front clutch clearance? [Re: Skeptic] #1438966 05/22/13 06:54 PM 05/22/13 06:54 PM
Joined: Jan 2003 Posts: 75,092 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,092 A Banana Republic near you.	Quote: Quote: Quote: Positive on the .680" number. I've looked @ 2 different FSMs the '72- where I got the clearance #s I posted first, the '68 that I checked this A.M. shows a much wider range of clearances. They are both consistent in showing the wavy washer in the front drum and the flat in the rear. the wavy washer should be in the front (direct) clutch and a flat in the rear (forward) clutch That's what I thought. I may have mis-read the 2 people that seemed to post the opposite. No, they posted the opposite and I'm too.

Re: 727 front clutch clearance? [Re: Skeptic] #1438967 05/22/13 09:27 PM 05/22/13 09:27 PM
Joined: Feb 2003 Posts: 581 Wisconsin B beecrazy69 mopar
beecrazy69 mopar B Joined: Feb 2003 Posts: 581 Wisconsin	Skeptic, John is correct in that the forward (rear)clutch with the shaft uses a flat snap-ring to retain the pressure plate. The wave does go in the direct (front) clutch. How many clutches discs can you fit with the .680" pressure plate? I am going to assume 3.... It sounds like you have a 4 clutch drum set up for 3 if the pressure plate is that fat. The forward and direct should have the same thickness pressure plates (they are the same). You can continue to use the wave snap ring and have the pressure plate about .010" below the snap ring groove. If you choose to use a flat snap ring, (thicker ones are better) but then machining of the pressure plate may need to be done to get good clearance. .068" is fine for clearance, I wouldn't go tighter but that is still fine. I usually don't go over .090". Don

Re: 727 front clutch clearance? [Re: beecrazy69] #1438968 05/22/13 11:27 PM 05/22/13 11:27 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic OP master
Skeptic OP master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	Right now there are 4 clutches. I've looked @ my '68 FSM and the specs are far more broad than the '72 FSM, the spec range for a 4 clutch front drum go from .024"->.125" and the High Perf 440 is .066"->.123". With that I'm going to put it together as is. Thanks again, Steve

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1