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914World.com _ 914World Garage _ Gear Lube
Posted by: Sir Nick Dec 28 2016, 08:55 PM
Hey ya'll. I'm finally restoring my old 914-6 I've had for 35 years. Sorry, I got sidetracked by a few 911's and a 944. I've got the engine done and am considering installing a LSD in the trans. I'd like your recommendations for a LSD for street and the rare autocross? But my main question is for gear lube recommendations, both with and without LSD?
Posted by: Mark Henry Dec 28 2016, 09:01 PM
To me you only need a LSD if you race a lot, very high HP or drive in the snow often.
IIRC the Quafe LSD is the best bang for the buck.
Posted by: N_Jay Dec 28 2016, 10:24 PM
Years ago, Swepco was the best gear oil for porsche transmissions.
Not sure if there is something better now.
Posted by: ConeDodger Dec 29 2016, 07:30 AM
Swepco 
Guard and Quaiffe both make great products. I would recommend a Torque biasing differential over an LSD for your stated street / autocross purposes.
Posted by: Mark Henry Dec 29 2016, 08:06 AM
Swepco is ok and I swear by their 101 grease, but personally I don't believe the hype on the gear oil.
To me it's just average gear oil with a pretty blue dye and a high price tag. I have two jugs of it gathering dust on a shelf in the shop.
To me Kendall has always been a far superior gear oil, try Kendall NS-MP Gear Lube.
Posted by: N_Jay Dec 29 2016, 09:51 AM
Swepco is ok and I swear by their 101 grease, but personally I don't believe the hype on the gear oil.
To me it's just average gear oil with a pretty blue dye and a high price tag. I have two jugs of it gathering dust on a shelf in the shop.
To me Kendall has always been a far superior gear oil, try Kendall NS-MP Gear Lube.
When did they add blue dye? (Yes, My SWEPCO gear oil is that old!)
Posted by: Mark Henry Dec 29 2016, 11:47 AM
When did they add blue dye? (Yes, My SWEPCO gear oil is that old!)
Don't know, over 10 years.
One thing I have been doing is adding 1/2 quart swepco to my gear oil so I can easily see if an oil leak is tranny or engine.
Posted by: johnhora Dec 29 2016, 12:06 PM
I've had good luck with Sta-Lube in 901 ZF LSD equipped transmissions:
You can get it online or at your local NAPA.
Used Swepco for may years in 911/914...good oil and the best for finding leaks...always a little purple spot under any transmission
using it....whether old or just rebuilt.... No weeping problems with the Sta-Lube
Used Redline in the race gear boxes....never a problem on hard worked 901 or 915 transmissions
Posted by: Dave_Darling Dec 29 2016, 06:29 PM
Guard Transmission makes the best limited-slip diffs. For the track, the friction-based LSD is preferred. For autoX or the street, the torque-biasing one is generally preferred.
Be prepared to pay for the best if you want the best. GT isn't cheap.
--DD
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