thrust bearing fail
#1805462
04/17/15 09:35 AM
04/17/15 09:35 AM
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Joined: Mar 2003
Posts: 1,629 pa
572charger
OP
top fuel
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OP
top fuel
Joined: Mar 2003
Posts: 1,629
pa
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anybody know why a 727 would tear up the back of the thrust bearing!!??? don't think the coverter is balloning ??
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
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Re: thrust bearing fail
[Re: 572charger]
#1805467
04/17/15 09:47 AM
04/17/15 09:47 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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anybody know why a 727 would tear up the back of the thrust bearing!!??? don't think the coverter is balloning ?? Just the back.. the conv is balloning and pushing forward on the crank
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Re: thrust bearing fail
[Re: 572charger]
#1805513
04/17/15 11:48 AM
04/17/15 11:48 AM
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Joined: Jan 2003
Posts: 7,131 Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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Line pressure possibly too high pushing the converter forward.
Last edited by BBR; 04/17/15 11:49 AM.
Drag Week 2011 - 77th place - DD Drag Week 2012 - 2nd place SRBB N/A Drag Week 2014 - Kapooya RMRW 2018 RMRW 2020
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Re: thrust bearing fail
[Re: 572charger]
#1806796
04/19/15 11:22 AM
04/19/15 11:22 AM
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Joined: Mar 2003
Posts: 1,629 pa
572charger
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top fuel
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its a ati convertor i have never had this problem before seemed to do it in one pass at the track on motor no no2 ?? same convertor and combo for 7 years i fresend the trans and motor 1 1/2 years ago rick it ahs a geardrive on it witha cam button all looked good there, i will send the covertor back ive had it for 10 yrs its a ATI blown fuel convertor and i will take the trans apart again to ck it thanks for all the in put
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
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Re: thrust bearing fail
[Re: 572charger]
#1806810
04/19/15 11:55 AM
04/19/15 11:55 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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its a ati convertor i have never had this problem before seemed to do it in one pass at the track on motor no no2 ?? same convertor and combo for 7 years i fresend the trans and motor 1 1/2 years ago rick it ahs a geardrive on it witha cam button all looked good there, i will send the covertor back ive had it for 10 yrs its a ATI blown fuel convertor and i will take the trans apart again to ck it thanks for all the in put Being that its a older conv and has many cycles on it, its possible that the walls of the conv are getting weaker from flexing and is actually starting to flex more... just a guess EDIT Didnt you use spray on that engine in the past.. if you did you might have stretched the front wall and it has less distance to move when it heats up
Last edited by MR_P_BODY; 04/19/15 12:03 PM.
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Re: thrust bearing fail
[Re: 572charger]
#1807270
04/19/15 10:14 PM
04/19/15 10:14 PM
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Joined: Mar 2003
Posts: 1,629 pa
572charger
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top fuel
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OP
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its a 606 cuin hemi calles crank and a ati convertor like i said before its all been together since 2007 , never a problem ive ssen turbo 400s ruin crank thrust bearings from the covertor charge hole size on the pump puts pressure on the convertor never heard of this on a 727 anybody else ??
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
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Re: thrust bearing fail
[Re: 572charger]
#1807307
04/19/15 10:59 PM
04/19/15 10:59 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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its a 606 cuin hemi calles crank and a ati convertor like i said before its all been together since 2007 , never a problem ive ssen turbo 400s ruin crank thrust bearings from the covertor charge hole size on the pump puts pressure on the convertor never heard of this on a 727 anybody else ?? I've seen 3 where the thrust was wiped out on the rear.. all 3 were from the conv expanding... and I have heard of more but I only seen the 3 EDIT All 3 I seen were 727
Last edited by MR_P_BODY; 04/19/15 11:00 PM.
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Re: thrust bearing fail
[Re: 572charger]
#1807536
04/20/15 09:19 AM
04/20/15 09:19 AM
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Joined: Mar 2003
Posts: 1,629 pa
572charger
OP
top fuel
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OP
top fuel
Joined: Mar 2003
Posts: 1,629
pa
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gonna send the convertor back to ATI this week ill ck it in the back of the crank 1st, im gonna pull the trans out and check the end play and pull the pump out of it take a peek before putting it behind the new bullet , thanks for all replies , gonna call john at CRT also pick his brain !!! since all the trans parts are from him !!!!
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
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Re: thrust bearing fail
[Re: 572charger]
#1807607
04/20/15 11:31 AM
04/20/15 11:31 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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gonna send the convertor back to ATI this week ill ck it in the back of the crank 1st, im gonna pull the trans out and check the end play and pull the pump out of it take a peek before putting it behind the new bullet , thanks for all replies , gonna call john at CRT also pick his brain !!! since all the trans parts are from him !!!! I was thinking about this last night... when you get a new conv you might want to measure the thickness of the conv so you have a reference later on... granted I have never done it but maybe we all should
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Re: thrust bearing fail
[Re: TheOtherDodge]
#1807979
04/20/15 06:50 PM
04/20/15 06:50 PM
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Joined: Jan 2004
Posts: 8,251 fredericksburg,va
cudaman1969
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master
Joined: Jan 2004
Posts: 8,251
fredericksburg,va
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If you can't seem to find anything wrong and certain the converter is not ballooning, add oil groves to that main. I had the same issue of wiping the thrust and couldn't find any evidence of the converter and was advised to add groves for extra oiling from my transmission builder who builds/races sprint cars. Have not had a problem since. can you explain more on grooving.
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