as the title says, we need a Discussion on clutch capacities and touch points. The most information i can get is try each setting to see what works best but NOTHING more on why and what is happening and any pro's and con's to running what with what hardware.
Clutch Capacity adjustment, which controls the hydraulic pressure applied to the clutch plates. +/-7 levels of adjustment to control clutch clamping force. used to eliminate clutch slip during full throttle upshifts, mainly in higher power GT-R's
negatives is that the seals will fail? from what i understand dodson seals will not fail due to this? please explain more if you know more.
Touch Point Adjustment is used to adjust the amount of clutch drag while stationary. It will eliminate excessive creep or set clutch drag for the perfect launch responsiveness between +/- 7
any negitives? when should each number be used? any drawback to different settings?
Would anyone like to describe clutch gear learning and gear position tests?
Some quotes i have found from google search on the subject.
CC (Clutch Capacity), is basically the line pressure or how hard the clutch grips (-7 is low clutch grip, +7 is max clutch grip)
TP (Touch Point), is basically when the clutch is engaged.
if you get no clutch slip with 0 0 0 0, I would stick with it. If you are making a lot of Torque, like with 20psi of boost and E85, then usually you need to bump the CC up to +1 or +2 to keep it from slipping.
Set the Clutch Capacity's up if your trans is slipping. You can set up to +7, I would use the lowest setting that you get no slip. If your setting is to low, that's how your burn clutches. As well as your tune. If your tune is off, then you will burn up clutches as well.
With a ProMax on a stock turbo car, Keep in mind a Promax does not like to be slipped, like with LC4/LC5. Especially if the tune makes the clutch slip.
Do a clutch learn with the Cobb.
I think this is some what related... i found another comment about transmission logging via ecutek... it appears you can use the ecutek trans logging even if you have cobb or syvecs. and here is one reason why... http://www.gtrherita...cm-only/?p=2844
I am a little late to this but hands down the ecutek can offer more. It is to a point that it will be a requirement for one of my dealers to have just for the logging ability. I have tried to explain to cobb how badly we need to be able to see sensors and to date I have not heard of any eta on this happening.
Hours and hours of diagnosing can be taken care of with a simple 30 second log !!! It will also become very easy to see if a clutch is going to be hurt while launching. If we could have them implement a warning light or limp in mode if things are not right ( x psi at X rpm while in launch mode ) it would save thousands of dollars worth of damaged clutch parts.
I will be doing a lot more testing on my car now that I have it ( thanks Bill )