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Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Tue Mar 16, 2010 9:58 am
by kevin
Ben, have not forgortten to find the hardness brinell c. Must just do some conversions to get exact figure if its above or below 60. Been chatting to a lot of ''experts '' , and the most critical element is, as Mats mentioned is the oil. If the oil is breaking down and molecules are shearing , this intern causes minor ''explosions'' on the gear resulting in pitting and then failure. This is all induced from the vibration in the l gear from accelaration to decelleration. Got to look at a gear in the same light as a journal as it basicaly is producing the same function-. I think we just get sh*t oil here as the are ten times more gearbox failures here than i have seen anywhere else. maybe our drivers are really bad
Must say the imported redline oil is working great at the moment.
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Thu Mar 18, 2010 1:00 pm
by gtv-racer
When i'm overhauling my transaxle i'll do some test. Check the hardness off the pinion gear and some other , check it for kerbs. Also gonna discus it with our engenier or it can be strengthen. Maybe make some new parts . Whe can make everything over here. Also whe can do good research. So there maybe al salution. maybe maybe maybe....
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Fri May 28, 2010 4:46 pm
by Greg Gordon
I have seen that exact pinion failure twice, both times on stockish 2.5 engines. That leads me to agree that it may have been a quality control issue.
Greg Gordon,
www.hiperformancestore.com
www.okinjectors.com
Oh, and I am back!
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Fri May 28, 2010 8:44 pm
by GregoryV
Greg Gordon wrote:I have seen that exact pinion failure twice, both times on stockish 2.5 engines. That leads me to agree that it may have been a quality control issue.
Yeah, that was mine way back when at 29K miles, and an 83 at that, dumped the clutch and, bang - stripped pinion...
350 RWhp... sheesh
and torque? GV
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Sat May 29, 2010 12:57 am
by Mats
Hardening issues maybe? Too deep and you have problems like this.
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Sun May 30, 2010 10:49 am
by kevin
Mats , think i mentioned this before but I did have the pionion analysed and they found oxidation in the root of the pinion tooth caused from ingerss off air during heat treatment process . Therefore FACTORY DEFECT.
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Sun May 30, 2010 10:52 am
by kevin
sorry ''ingress" . i still got copies of report and lab x-ray pics.
Re: 75 3.0v6 boosted.Preparing transaxle for extra load.
Posted: Sun May 30, 2010 12:28 pm
by Mats
Sry, thought Greg were talking about the pinion falling off.