Glynh Posted September 25, 2023 Share Posted September 25, 2023 My BMW diff whines on overrun and also chatters a bit at times, I'm new to Caterhams so don't yet know what is normal. The car is a one year old 360S, I'm not expecting that it has an LSD but would like to check as the car was initially built for promotion work by Caterham and has a ton of extras fitted. Is there an identifier on the casing that will tell me which diff I have? Link to comment Share on other sites More sharing options...
ScottR400D Posted September 25, 2023 Share Posted September 25, 2023 The whining and chatter happen regardless of the LS. There's a label on the diff which if still there might indicate LSD or not. Zoom in on attached. Good luck in getting to it! Link to comment Share on other sites More sharing options...
ScottR400D Posted September 25, 2023 Share Posted September 25, 2023 Perhaps better: Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted September 25, 2023 Member Share Posted September 25, 2023 Thanks for the photos.It would be great to get this documented for current and recent Sevens.How do the different diffs behave in the three tests other than checking the label and the documentation?• Jacking up the rear end and turning a wheel?• Looking at the driveshaft fitting?• Laying down rubber?ThanksJonathan Link to comment Share on other sites More sharing options...
Drakman Posted September 25, 2023 Share Posted September 25, 2023 My 2014 BMW Titan diff has LSD painted on the base of the diff housing and the ratio. If you have a titan, spinning the wheel may not be of any use, my titan i could spin the wheel with the other side on the ground because the diff LSD was cactus. Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted September 25, 2023 Area Representative Share Posted September 25, 2023 Usually engraved with type & ratio on bottom of casing. Well mine is....... Link to comment Share on other sites More sharing options...
ScottR400D Posted September 25, 2023 Share Posted September 25, 2023 Drakman is right. I just looked at the one in my earlier image, which is a:spare, and it's got '3.64 LSD' in white marker pen on the underside. Link to comment Share on other sites More sharing options...
Glynh Posted September 25, 2023 Author Share Posted September 25, 2023 I can't see if there's a label on top without major surgery but the ratio is painted on the underside without any LSD reference also the rear wheels turn independently so I'm assuming it's not a LSD. Thanks for all the help. Link to comment Share on other sites More sharing options...
ScottR400D Posted September 25, 2023 Share Posted September 25, 2023 Yes, open diff. Lucky you!! Link to comment Share on other sites More sharing options...
Dave Hardcastle Posted September 26, 2023 Share Posted September 26, 2023 A far easier way would be to write to the Martin.Phipps@caterham.com, Caterham Archivist and a club member also, and ask him for the details of your car. As it was a Caterham promotional build he may not be able to help, but you don't know until you ask. Link to comment Share on other sites More sharing options...
Mrp Posted September 26, 2023 Share Posted September 26, 2023 #8Hi GlynhI think you have a non lsd as this is how my lsd version was markedMrp Link to comment Share on other sites More sharing options...
Glynh Posted September 26, 2023 Author Share Posted September 26, 2023 Thanks, that pretty much confirms it Mrp. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now