Guys in the tranny business
Guys in the tranny business Many moons ago when I spent serveral years in an independent trans. shop,the way we fired a trans was converter dry fill the pan w/ 4-5 qts. fire the motor put it in reverse (tires off the ground) and poor another 5 or so qts and then go thru all the gears and start checking it.Has this procedure changed with you guys? I know the fluid amount might vary per trans.THANKS
Well these days the convertor company's like for the converter to have some oil in for initial start up. Reason for this is for lube and also they want you to soak the lock up clutch. IMO it's the right way to do it. In the old days I would agree with you that's how I did it. But I have found on the trans dyno is when you fire it up dry it thends to knock or make noise for a bit. This can't be good for a new convertor.
Last edited by FLT; Apr 2, 2006 at 09:02 PM. Reason: mis-type
I would like to hear what these guys (sponsors do)GM ships there trannys with the converters in,do they have fluid in them?Interesting if it is mentioned in the late model GM service manuals.
You have to put ATF in the converter to lube the pump and oil the bearings and clutch surface
if you do not do this the converter will run dry and overheat the bearings and damage the inner sprage roller clutch assy. and the front hub
The front pump bushing of the transmission can also run dry till the converter fills.
if you do not do this the converter will run dry and overheat the bearings and damage the inner sprage roller clutch assy. and the front hub
The front pump bushing of the transmission can also run dry till the converter fills.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
I'm not a shop (but my Dad was)...
First, 1 qt in TC, install TC, install trans.
Then, 8 qts down fill tube.
Start engine.
Go thru gears a few times.
Check level and add upto 3 more qts.
Allow to warm up and recheck level.
You know how much a trans. holds, so adjust the 8 qt step for different trans.
First, 1 qt in TC, install TC, install trans.
Then, 8 qts down fill tube.
Start engine.
Go thru gears a few times.
Check level and add upto 3 more qts.
Allow to warm up and recheck level.
You know how much a trans. holds, so adjust the 8 qt step for different trans.
I have never had any converter building experience but I would have to believe that most converters are assembled much like any engine or transmission.Engines are assembled with special lubes or oils to prevent damage from dry starts.Just as transmissions are assembled with a lube waxy like with a low melting point and bearings are soaked in ATF just as clutches and steals are soaked to get accurate clearances and an eliminate dry start damage.Converter lock up discs could also be pre soaked I assume.
Last edited by gonzo 6.0; Apr 2, 2006 at 11:53 PM.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Converter parts near the outside edge have to be dry when the converter is welded together.
Converter gets hot when welded.... after tacking, the circumference is welded in one continuous weld.
Converter gets hot when welded.... after tacking, the circumference is welded in one continuous weld.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Originally Posted by joecar
Converter parts near the outside edge have to be dry when the converter is welded together.
Converter gets hot when welded.... after tacking, the circumference is welded in one continuous weld.
Converter gets hot when welded.... after tacking, the circumference is welded in one continuous weld.