Extra clutches in the direct, really worth it?
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2quiktocare
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- May 12, 2003
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Jakeshoe has the correct answer. You start thinning out the steels and all you are going to get is a lot of extra heat build up due to the steels not being able to dissipate the heat fast enough.
You know, what was my line of thinking. I know the more clutch surface area you can get the better, but it seemed like too much of a compromise running steels that thin.
I know it's good to add one in the 4th gear, but the shorter piston does nothing to effect heat transfer.
Let me ask another related question, the last build I set my directs to .040" per your recomendation. Can you get me some more reasoning behind that over whatever stock clearance gives you. Is it only to improve apply time so that the piston doesn't have to stroke as far??
(I'm only a student, no expert by far, but I do like to know why things are the way they are)
I know it's good to add one in the 4th gear, but the shorter piston does nothing to effect heat transfer.
Let me ask another related question, the last build I set my directs to .040" per your recomendation. Can you get me some more reasoning behind that over whatever stock clearance gives you. Is it only to improve apply time so that the piston doesn't have to stroke as far??
(I'm only a student, no expert by far, but I do like to know why things are the way they are)
IMO,
the ".040" on the dot MUST be that way clearance is not necessary.
You MUST have a minimum of .040 to prevent dragging of the clutches in gears other than direct, but the difference between .040-.050 in apply time is pretty negligable in a performance calibrated trans with the feed holes opened up.
I wouldn't be afraid of anything from .040-.060". The only advantage I can see of trying ot set the same exact tolerance everytime is to get perfect repeatability with the same orifice size, etc..
And again not really THAT ritical.
Same deal on the band adjustment. .040-.060 will work fine.
Biggest thing is you don't want a huge sloppy band clearance and a huge sloppy clutch clearance.
When it goes from 2-3 it COULD cause a shift flair due to bad shift timing caused by WAY excessive clearances.
It's also a critical shift to time on a 700 because the band has to release and the 3-4's have to apply. And both are known weakness's in the 700, as both tha band and directs are known weaknesses in the 200.
the ".040" on the dot MUST be that way clearance is not necessary.
You MUST have a minimum of .040 to prevent dragging of the clutches in gears other than direct, but the difference between .040-.050 in apply time is pretty negligable in a performance calibrated trans with the feed holes opened up.
I wouldn't be afraid of anything from .040-.060". The only advantage I can see of trying ot set the same exact tolerance everytime is to get perfect repeatability with the same orifice size, etc..
And again not really THAT ritical.
Same deal on the band adjustment. .040-.060 will work fine.
Biggest thing is you don't want a huge sloppy band clearance and a huge sloppy clutch clearance.
When it goes from 2-3 it COULD cause a shift flair due to bad shift timing caused by WAY excessive clearances.
It's also a critical shift to time on a 700 because the band has to release and the 3-4's have to apply. And both are known weakness's in the 700, as both tha band and directs are known weaknesses in the 200.
Clearance
Well, to achive the .040" in my direct, I think I had to put in 4 oversized steels, I figured that would just equate to better thermal endurance.
One reason I ask, is I have a set of Kolenes for it hanging around, I was wondering if I should try them and go with looser clearance, or go back with stock+oversized steels. I didn't know if wanted to start up the Kolene vs standard discussion. LOL
I want to say I had about .090 on my band, it was within the ATSG clearance anyhow. Never really had a problem with the big alto red band and 694 servo. Second always hits good in mine, even when the pump was failing it was pretty snappy.
Well, to achive the .040" in my direct, I think I had to put in 4 oversized steels, I figured that would just equate to better thermal endurance.
One reason I ask, is I have a set of Kolenes for it hanging around, I was wondering if I should try them and go with looser clearance, or go back with stock+oversized steels. I didn't know if wanted to start up the Kolene vs standard discussion. LOL
I want to say I had about .090 on my band, it was within the ATSG clearance anyhow. Never really had a problem with the big alto red band and 694 servo. Second always hits good in mine, even when the pump was failing it was pretty snappy.
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