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Re: Tritech three piece rear main seal install?
[Re: gregsdart]
#2766846
04/21/20 05:32 PM
04/21/20 05:32 PM
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Joined: Aug 2011
Posts: 2,919
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,919
Pattison Texas
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10 and 2 are not 180 degrees apart so it doesn't make any sense. Since the two parts crush slightly when the retainer is installed, if the two parts were both at 12 oclock they would not have to slide on each other to seat properly but might leak. If they were 180 degrees from each other that would create the largest amount of slip between the inner and outer parts. 10 and 2 make sense to me because they would be offset a lot but wouldn't have to slip as much to crush together, eliminating distortion. 572boatracer has been able to pull some very high vacuum using these seals. The engineer also asked what seal i was using on the front of the crank. The Milodon geardrive seal works fine but Tritec makes a special seal for Jesel beltdrives to help hold vacuum. I am just as confused as Andy, does the inner part of the seal move in the outer part ??
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5
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Re: Tritech three piece rear main seal install?
[Re: CSK]
#2766900
04/21/20 07:35 PM
04/21/20 07:35 PM
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Joined: Jan 2003
Posts: 10,155
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,155
Frostbitefalls MN (Rocky&Bullw...
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10 and 2 are not 180 degrees apart so it doesn't make any sense. Since the two parts crush slightly when the retainer is installed, if the two parts were both at 12 oclock they would not have to slide on each other to seat properly but might leak. If they were 180 degrees from each other that would create the largest amount of slip between the inner and outer parts. 10 and 2 make sense to me because they would be offset a lot but wouldn't have to slip as much to crush together, eliminating distortion. 572boatracer has been able to pull some very high vacuum using these seals. The engineer also asked what seal i was using on the front of the crank. The Milodon geardrive seal works fine but Tritec makes a special seal for Jesel beltdrives to help hold vacuum. I am just as confused as Andy, does the inner part of the seal move in the outer part ?? The gray outer and tan inner can be slid around easily when loose. Once on the crank and tightened up by the retainer i am sure they won't move.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Tritech three piece rear main seal install?
[Re: jlatessa]
#2766901
04/21/20 07:39 PM
04/21/20 07:39 PM
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Joined: Jan 2003
Posts: 10,155
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
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Frostbitefalls MN (Rocky&Bullw...
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I think maybe they mean is the vertical PARTING line should be between 10 and 2 o'clock.
Joe not so. You have two lip seals, one rides inside the other and both lips ride on the crank.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Tritech three piece rear main seal install?
[Re: gregsdart]
#2766907
04/21/20 07:55 PM
04/21/20 07:55 PM
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Joined: Aug 2011
Posts: 2,919
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,919
Pattison Texas
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10 and 2 are not 180 degrees apart so it doesn't make any sense. Since the two parts crush slightly when the retainer is installed, if the two parts were both at 12 oclock they would not have to slide on each other to seat properly but might leak. If they were 180 degrees from each other that would create the largest amount of slip between the inner and outer parts. 10 and 2 make sense to me because they would be offset a lot but wouldn't have to slip as much to crush together, eliminating distortion. 572boatracer has been able to pull some very high vacuum using these seals. The engineer also asked what seal i was using on the front of the crank. The Milodon geardrive seal works fine but Tritec makes a special seal for Jesel beltdrives to help hold vacuum. I am just as confused as Andy, does the inner part of the seal move in the outer part ?? The gray outer and tan inner can be slid around easily when loose. Once on the crank and tightened up by the retainer i am sure they won't move. Thanks 
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5
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Re: Tritech three piece rear main seal install?
[Re: AndyF]
#2767001
04/22/20 06:13 AM
04/22/20 06:13 AM
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Joined: Jan 2003
Posts: 10,155
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,155
Frostbitefalls MN (Rocky&Bullw...
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10 and 2 are not 180 degrees apart so it doesn't make any sense. Andy these are two seperate 360 degree seals, one rides inside the other. Both have lips that ride on the crank.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Tritech three piece rear main seal install?
[Re: gregsdart]
#2926698
05/25/21 10:00 PM
05/25/21 10:00 PM
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Joined: Oct 2006
Posts: 1,270
New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,270
New York, USA
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I used this seal on my last dyno 498” with a vacuum pump. I also changed the jesel front seal with the tritek ptfe seal. Tried my very best to seal up the rest of the motor. I installed the rearain with the parting lines 180 deg apart and just not lined up with the retainer/block parting lines. Sealing lips pointing toward rear outside of engine.
On the first pull with the initial regulator in just random setting, we had to abort the run bc the vacuum was at 21”. Those seals worked very good on my engine. We finally settled in at 13” after a few reg adjustments. I did install it completely dry. It did have a slight leak on initial breakin because we kept the vacuum pump belt off for the breakin period and the seal is pointing the wrong way with no vacuum. Once we pulled vacuum, no leaks at all.
I’m investigating whether i could use this rearmain seal on a street engine with it installed in traditional positioning. I have a persistent leak with a viton felpro seal after 2 installs. I’m thinking that tritek design might work if installed backwards from the direction With a vacuum pump. We will see. Not sure of the life of ptfe on a street engine with alot of miles. Didn’t mean to hijack, but i do like this seal. And thanks to Boatracer for guideance when i installed it.
Last edited by Chargerfan68; 05/25/21 10:04 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Tritech three piece rear main seal install?
[Re: sasquatch]
#2926782
05/26/21 09:09 AM
05/26/21 09:09 AM
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Joined: Jan 2003
Posts: 19,610
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,610
Las Vegas
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Ok
Anybody have contact info on this wonder seal? Todd Rodd been using them for awhile. Very good stuff FWIW.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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