Gearbox bracing

nominousnominous familEE
in Engine & Drivetrain
Ok, I've heard about draggers bracing their boxes to keep them a bit stronger. I know someone on here (sorry forget the name)( split their box around the diff area.

Has anyone looked into bracing for large power or have any good links on D series bracing solutions ?

What about cryo?

Does anyone know if the shuttle box has steel caged bearings ?
The Y1/Y2 boxes don't, we tend to do that to them when we rebuild them over here.

Comments

  • eldonciv777eldonciv777 Wagonist
    I've honestly never heard of what you speak of. If it split around the differential, most likely the diff pin or spider gears took a shit and blew a hole it the side of the trans. In the USA there are pleny of guys running 400+ hp on stock transmissions with upgraded differentials with hardly any problems.
  • Mista BoneMista Bone Wagonist
    I know of the issue, no way to brace the cheap Honda castings from shaft walk.

    I had an idea about how to fix it........only afterwards the tranny won't be able to fit back into the chassis, oops!
  • nominousnominous familEE
    :lol:

    I've seen before people pulling the 5th from a drag box in a B and putting bracing in that way.

    Looking at cyro and WPC treatments over here. TBH I thought it would be expensive but it's not that bad.
    I know of a guy that does NDT looking for cracks and damage in the gears so probably give him a shout too.
  • Mista BoneMista Bone Wagonist
    that is not bracing, but a "handcuff" to keep the shafts from walking apart.

    It does nothing for the thrust loading, basically the countershaft trying to exit out the end of the case.
  • eldonciv777eldonciv777 Wagonist
    So this is actually a valid concern? I was under the impression that they were fairly stout and not something to be concerned about. Also, how much power are we talking before this is something that should be looked at? 350? 550? 800?
  • Mista BoneMista Bone Wagonist
    D series is fine until 350-400 whp with a LSD.

    About 400 whp is where you start stripping the gear teeth. There is a guy on HondaTech that has a coating, but that will not prevent axial walking of the shaft.

    Go much beyond 400 whp, look into an adapter plate to run a B series tranny.
  • nominousnominous familEE
    400whp is the goal and the finish line then.
Sign In or Register to comment.

© Vanilla Keystone Theme 2025