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727 BURNT UP!
#1021628
06/27/11 10:56 PM
06/27/11 10:56 PM
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Joined: Nov 2006
Posts: 1,090
north cakalaky
instigator
OP
super stock
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OP
super stock
Joined: Nov 2006
Posts: 1,090
north cakalaky
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Finally got the trans pulled out and opened up tonight....
Found front clutches(5)were burnt....so were rear clutches(4)
I made 5 passes on the car with the fastest going 128mph in the 1/8th..so it was making some steam but not wicked up like I want to be able to....
This was the 1st time out after replacing the stripped aluminum drum with a steel, cluthes then looked good....
I test fit a 7 cluth red alto in the front drum tonight and had .070....
also test a 5 clutch rear setup and had 0 clearnaced....got to do a little work to get the .025 minimum...
probably looking to put a brake in the trans since I have it out and tore down....any recomendations....anyone use the tranzact nitro brake with the increased line pressure?
65 Barracuda
All aluminum Indy HEMI with some boost!
COMING TO A TRACK NEAR YOU!
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Re: 727 BURNT UP!
[Re: steeldust]
#1021630
06/27/11 11:59 PM
06/27/11 11:59 PM
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Joined: Nov 2006
Posts: 1,090
north cakalaky
instigator
OP
super stock
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OP
super stock
Joined: Nov 2006
Posts: 1,090
north cakalaky
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The 128mph pass was at 18 psi.....I really want to get the 727 to work for me....I feel I may have had something out of wack the last time I put the trans back together because I had about 50 passes on it before and the clutches looked good after I tore the trans down to fix the broken planetary.
Now that was with less power but I still had numerous 120mph+ 1/8th mile passes before.
65 Barracuda
All aluminum Indy HEMI with some boost!
COMING TO A TRACK NEAR YOU!
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Re: 727 BURNT UP!
[Re: JohnRR]
#1021634
06/28/11 10:16 AM
06/28/11 10:16 AM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Yea I gotta agree the 727 wasnt setup properly.. I have been 900+HP with a 727 with mostly stock parts and they have been lasting for years.  I have run several Tranzact Brakes, and they work flawlessly.
Last edited by Bob_Coomer; 06/28/11 10:16 AM.
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: 727 BURNT UP!
[Re: Leon441]
#1021639
06/28/11 02:14 PM
06/28/11 02:14 PM
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Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
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Quote:
Quote:
Time for a glide or a TH400....Doubt the mopar trans will last at those levels....
A properly built 727 will last well over a full season at much more power.
My personal experience.....
Ran over 140MPH in the eighth at 3200 lbs 31X10.5W tires 4.10 rear gear. Used a Tranzact Pro brake with the clean neutral. Did not have to run a lot of line pressure either. 135 psi. When I had trouble burning up clutches it was when I tried other Valve Bodies. Get a Tranzact.
Also I know it against most of the Mopar communities advise.. but, I never had good results with the red clutches. The ones I ran were smooth. After running a powerglide I found that most in that arena do not run the smooth clutches due to the fact they, for lack of a better word, hydraplane. The smooth surface just can not properly squeeze the fluid out from between the clutch and plates without slipping first. My best luck with the 727 was when running the blue grooved clutches and steels. My engine did not make a million HP or Torque but I have timeslips to proove I ran a lot faster than these guys think is possible with a 727. Maybe it is how they built their trannies.
Leon
I love the blue clutches, its all I run. I have seen guys run them with a lot of hp, but not every week all season off a trans brake. Most switched when trying to stay in the points every week, they weren't rotating the world, just good solid 10.20 cars. Maybe the VB makes the difference, I can't say.
What is the clean Neutral you guys are talking about?
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Re: 727 BURNT UP!
[Re: Dragula]
#1021640
06/28/11 02:33 PM
06/28/11 02:33 PM
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Joined: Feb 2007
Posts: 5,080
organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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Quote:
Quote:
Quote:
Time for a glide or a TH400....Doubt the mopar trans will last at those levels....
A properly built 727 will last well over a full season at much more power.
My personal experience.....
Ran over 140MPH in the eighth at 3200 lbs 31X10.5W tires 4.10 rear gear. Used a Tranzact Pro brake with the clean neutral. Did not have to run a lot of line pressure either. 135 psi. When I had trouble burning up clutches it was when I tried other Valve Bodies. Get a Tranzact.
Also I know it against most of the Mopar communities advise.. but, I never had good results with the red clutches. The ones I ran were smooth. After running a powerglide I found that most in that arena do not run the smooth clutches due to the fact they, for lack of a better word, hydraplane. The smooth surface just can not properly squeeze the fluid out from between the clutch and plates without slipping first. My best luck with the 727 was when running the blue grooved clutches and steels. My engine did not make a million HP or Torque but I have timeslips to proove I ran a lot faster than these guys think is possible with a 727. Maybe it is how they built their trannies.
Leon
I love the blue clutches, its all I run. I have seen guys run them with a lot of hp, but not every week all season off a trans brake. Most switched when trying to stay in the points every week, they weren't rotating the world, just good solid 10.20 cars. Maybe the VB makes the difference, I can't say.
What is the clean Neutral you guys are talking about?
fwiw, a torqueflite will take INFINITE torque and power with the right parts. i agree on the blue clutches- they're excellent. valve bodies make a difference ime. clean neutral is a reverse valve body with an additional neutral beyond high gear- a cool thing.
for what is the good life if not doing things thoughtfully?
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Re: 727 BURNT UP!
[Re: maximum entropy]
#1021641
06/28/11 02:47 PM
06/28/11 02:47 PM
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Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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A clean neutral will give you some where to go with a reverse pattern valve body if you sling the guts out of one in the top of second or third gear.
Getting old just means you were smarter than some and luckier than others.
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Re: 727 BURNT UP!
[Re: dodgedude4x4]
#1021643
06/28/11 05:57 PM
06/28/11 05:57 PM
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Joined: Nov 2006
Posts: 1,090
north cakalaky
instigator
OP
super stock
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OP
super stock
Joined: Nov 2006
Posts: 1,090
north cakalaky
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I definetly like the idea of being able to go to neutral at the big end....
I got the red altos that are grooved..they are not smooth...And I was able to squeeze 7 of them instead of 5 into the front drum...and 5 into the rear drum instead of 4...
I already had a billet steel front drum, steel front planet, ultimate sprag, I had already machined the front drum feed hole in the pump support, and an A&A manual valvebody with a high pressure spring....I had the stock lever, I believe 3.4 (CRT recommended it since I had extra line pressure( never measured it though I definetly will this time) I have a 4.2 if I should go with it....
65 Barracuda
All aluminum Indy HEMI with some boost!
COMING TO A TRACK NEAR YOU!
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Re: 727 BURNT UP!
[Re: DusterW2]
#1021647
06/28/11 10:14 PM
06/28/11 10:14 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Another comment I ran 4 front clutches and 4 rear.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: 727 BURNT UP!
[Re: Leon441]
#1021648
06/29/11 10:26 AM
06/29/11 10:26 AM
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Joined: May 2008
Posts: 1,238
North Cackilacky
sdaurity
pro stock
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pro stock
Joined: May 2008
Posts: 1,238
North Cackilacky
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I could run that many with nitrous, but had to stack the drums with the turbo for it to last.
One day I will have something cool here.
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Re: 727 BURNT UP!
[Re: instigator]
#1021649
06/29/11 12:37 PM
06/29/11 12:37 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Quote:
I had already machined the front drum feed hole in the pump support...
Are you guys talking about the feed passage between the rings on the pump support (reaction support)? This applies/holds the front clutch pack.
I have seen a couple methods, including Griner's milling the space between the rings flat all the way down to the feed hole. This pic shows it simply "V" shaped to improve flow (during the engagement).
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