Quote:
Originally posted by svxistentialist
A lot of people come to the same conclusion Harvey, the excessive heat is caused by the slow slurring shifts. Totally imperceptible, except in your wallet.
In the States some of the members have put in the TransGo shift kit. This is designed to firm up the change. Pretty sure it does not make it go CLUNK like a racing transmission, just takes a lot of the slide out of it.
From memory, they have two kits, one an aftermarket set that can be fitted without a stripdown, the other an Engineer's kit, that can only be put in while the box is being rebuilt.
Possibly Ron Mummert has had this done. I must mail him and see if it works well. My tranny is due a stripdown when I return from the 10th Anniversary meeting in England, and it might be a good insurance to add the kit to take away some of the excess heat cause.
Joe
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Gid'ay Joe, don't get too ironed out at the meet. Don't forget that you have to get back home.
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The heat that is produced in the trans is mainly from the torque converter. As the load of acceleration is applied, the converter starts to multiplying the engine torque, by changing it's ratio down from 1:1 to a maximum of 2:1. This action lowers the overall ratio to lessen the load on the engine. The trade off is large amounts of heat into the oil. I have seen examples of stall tests being done where the oil boils, forcing the oil up the dipstick to ignite on the exhaust.
The actual applying of clutches and bands doesn't produce much heat and is of no concern.
As far as shift kits go on this box, I become wary. Changing items in the valve body is not the way, thats why it's controlled by a computer, the valve body is just a dumb slave. All the operational actions, are performed in the TCU. If we want to change the action, it's the computer that needs the change.
As I said to Kuoh, there are a few different TCUs from other Subaru products that may provide the difference.
Anyway Joe enjoy the Meet and have a few for us. One for James and I'll have The rest.
Harvey.