Well I just got done reading the article #34, pg 118 and I still dont get your point. I see where Mr. Holmes talks about construction quality, then the shift kit, then the transmission tech to do the work, then about amsoil ATF, then about how tight it feels, then gives a test condition where at a given speed, boost level, load, etc he flips between lockup and unlocked and measured the RPM change. Then uses that to calculate that at those test conditions the TC unlocked is 92% efficient. -- I dont see anywhere where he talks about running WOT at 100% lockup or any of this other stuff.
Giving him the benifit of the doubt, I will say that this sounds like SunCoast has made a nice and efficient TC. One worthy of consideration.
I think the point that people are trying to get across is that appling huge amounts of power to a fully locked up TC, especially low RPMs is not going to help your TC live a long and healthy life. The original TC lockup clucthes where made for cruising to give better fuel economy. They were never designed to handle power. This is why the ECM in these things does not even lock the TC until overdrive. Because its for crusing and economy.
Even though DTT, SunCoasts, and other lockup clutches are much stronger that stock, they are still no match for the power of the cummins. If full size clutch in a manual transmission, even some after market ones, cant live up to this kind of power, then how to you expect these much smaller TC lockup clutches to last. At least Bill has the balls to tell you it wont last, and does not try to fool you into thinking it will.
And finally the other point is that with a nice and efficent TC like this 92% SunCoast in the article, you dont need to have lockup to get power to the ground and go. If anything when I read Mr. Homes article I think that is what impresses him is how well it operates unlocked. " opposed to the traditional lots of engine revs but not a whole lotta go". I really think that his point. I dont see anywhere where he states the best use of the TC is to hurry up and get into lockup. Or the fact is says locked at WOT.
Giving him the benifit of the doubt, I will say that this sounds like SunCoast has made a nice and efficient TC. One worthy of consideration.
I think the point that people are trying to get across is that appling huge amounts of power to a fully locked up TC, especially low RPMs is not going to help your TC live a long and healthy life. The original TC lockup clucthes where made for cruising to give better fuel economy. They were never designed to handle power. This is why the ECM in these things does not even lock the TC until overdrive. Because its for crusing and economy.
Even though DTT, SunCoasts, and other lockup clutches are much stronger that stock, they are still no match for the power of the cummins. If full size clutch in a manual transmission, even some after market ones, cant live up to this kind of power, then how to you expect these much smaller TC lockup clutches to last. At least Bill has the balls to tell you it wont last, and does not try to fool you into thinking it will.
And finally the other point is that with a nice and efficent TC like this 92% SunCoast in the article, you dont need to have lockup to get power to the ground and go. If anything when I read Mr. Homes article I think that is what impresses him is how well it operates unlocked. " opposed to the traditional lots of engine revs but not a whole lotta go". I really think that his point. I dont see anywhere where he states the best use of the TC is to hurry up and get into lockup. Or the fact is says locked at WOT.