@ UPS Mech Hell get to it in a later video😂 He’s going the whole 9 yards here walking you thru the build,hasn’t been done before on a 47/48 This is priceless….
The biggest mystery to setting these up to me is getting the tolerances correct. Having not done one yet, could you show where the feeler gauge is located when checking for said clearance" Thanks again man!
Logan, why dex/merc? Im just getting into building 47/48s and have come across this before with built 47/48s. What makes dex/merc a better option than atf4?
ATF4 is a thinner viscosity fluid than dex merc. It does not hold up to heat as well. All of the event timing of the valves in the valve body change when you change the viscosity of the fluid. This is why on an electronically controlled transmission such as a 68 you only want to run the factory spec ATF+4 to keep the clutch values and fill rates within spec with the correct viscosity fluid.
@@LoganbuiltRaceShop That makes complete sense. So in the case of built 47/48s running tighter than book tolerances, extra clutches, lube mods, and increased line pressure, the thicker fluid helps mitigate binds/flares induced by thermal viscosity differences. Am I seeing that correctly?
@ UPS Mech
Hell get to it in a later video😂
He’s going the whole 9 yards here walking you thru the build,hasn’t been done before on a 47/48
This is priceless….
The biggest mystery to setting these up to me is getting the tolerances correct. Having not done one yet, could you show where the feeler gauge is located when checking for said clearance" Thanks again man!
Tonight’s video is direct drum set up and I cover that more in depth!
Good shtuff!
Hah. My lip seal tool is made from an old camping flat mat cutting board . 🤙🏼
Logan, why dex/merc? Im just getting into building 47/48s and have come across this before with built 47/48s. What makes dex/merc a better option than atf4?
ATF4 is a thinner viscosity fluid than dex merc. It does not hold up to heat as well. All of the event timing of the valves in the valve body change when you change the viscosity of the fluid. This is why on an electronically controlled transmission such as a 68 you only want to run the factory spec ATF+4 to keep the clutch values and fill rates within spec with the correct viscosity fluid.
@@LoganbuiltRaceShop That makes complete sense. So in the case of built 47/48s running tighter than book tolerances, extra clutches, lube mods, and increased line pressure, the thicker fluid helps mitigate binds/flares induced by thermal viscosity differences. Am I seeing that correctly?
You said you use dex/merc but are soaking in atf4?
No soaking in dex/merc