Blowing up input shaft bearings on dseries trannies
well i broke two of the 3 forks in my z6-s20 tranny. i found some kid at a car show with a turbo y8 that said he had 3 trannies laying around that i coudl have to pull the forks out of. well, i opened them all yesterday on is a z6 tranny, one a cx, and one a y8. well on EVERYONE, he blew up the input shaft bearing. everytime and on the cx tranny, he even broke the input shaft.
what the hell is this kid doing, its not like he is putting down much power, a mere t-25. i blew up the forks, but thats what i figured would happen with over 300whp. well i got my forks, so im happy
what the hell is this kid doing, its not like he is putting down much power, a mere t-25. i blew up the forks, but thats what i figured would happen with over 300whp. well i got my forks, so im happy
From what I understand: on all Honda transmissions (that includes the B series), the input shaft bearing is a major problem area. If the bearing goes bad, it will trash the shaft.
I think that it's due to the fact that the bearing only gets oil to it when you go around corners and the oil "sloshes" up to where it's located.
If somebody was REAL tricky, it would be good to try locating a roller bearing to replace the ball bearing. But then again, that may not be the end-all fix.
Wes
I think that it's due to the fact that the bearing only gets oil to it when you go around corners and the oil "sloshes" up to where it's located.
If somebody was REAL tricky, it would be good to try locating a roller bearing to replace the ball bearing. But then again, that may not be the end-all fix.
Wes
Its happened to me and many others, but the growing trend seems to be: 6th gen trannies and ISB's don't get along too well.
Mine took a dive and I'm only stock.
Mine took a dive and I'm only stock.
a roller bearing woudl take away a degree a freedom, so that may not be good depending on the strength. i was just suprised by seeing it. i mean i have blown diffs and stuff, but this is new to me 
thanks for the reply!

thanks for the reply!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Wes V »</TD></TR><TR><TD CLASS="quote">From what I understand: on all Honda transmissions (that includes the B series), the input shaft bearing is a major problem area. If the bearing goes bad, it will trash the shaft.
I think that it's due to the fact that the bearing only gets oil to it when you go around corners and the oil "sloshes" up to where it's located.
Wes</TD></TR></TABLE>
The problem is people who drop the clutch hard in first, or really abuse first gear. Doing anything hard in first is REALLY hard on the input shaft bearing. I have 5 Hondas/Acuras over 400k and ALL of them still have nice quiet bearings, mainly due to being easy in first gear. Most of the cars have seen quite a bit of track duty, so they see a lot of hard driving. Still, that bearing is just fine.....
I think that it's due to the fact that the bearing only gets oil to it when you go around corners and the oil "sloshes" up to where it's located.
Wes</TD></TR></TABLE>
The problem is people who drop the clutch hard in first, or really abuse first gear. Doing anything hard in first is REALLY hard on the input shaft bearing. I have 5 Hondas/Acuras over 400k and ALL of them still have nice quiet bearings, mainly due to being easy in first gear. Most of the cars have seen quite a bit of track duty, so they see a lot of hard driving. Still, that bearing is just fine.....
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