i bought a 1980 mgb and received a rebuilt overdrive transmission (still in the crate)as part of the deal. when i went to sell the transmission, i was told it is not for a 1980. can someone help me identify what i have? it fills from the top and has a dipstick. i can email more pics.
Rodger: You should look at the overdrive unit's Laycock ID plate. If it is a blue plate, it is for later cars ('74.5 and on). If it is a black plate, it's for the earlier cars. The transmission will work in any of the cars '68 and older, but the gear that drives the speedometer might be wrong for your car.
Also, make sure that you check the type of Laycock overdrive, you also might have a Type-D overdrive which would have been for cars '62-'67. You wouldn't want to use that transmission in your car (even though it would work).
Tom
PS: Questions like this are best posted on the forums, beause people rarely browse the journals!
A transmission with a dipstick comes originally from a chrome bumper B. Later transmissions have a level filler plug on the side of the casing.
You can identify the OD-unit by it's solenoid coverplate, like Tom said. Black label is chrome bumper (until 1974 1/4), blue label is rubber bumper (1974 1/4 on).
You could install a chrome bumper tranny (dipstick) with a rubber bumper OD, but then you would have to recalibrate the speedometer or switch the speedo gear and speedo pinion in the OD (red instead of white). You need to do this, because the speedo will be 25 percent off if you don't. I did the switch and I'm satisfied with the result.
Regards,
Torsten
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Comments on "Journal Entry: Mgb Transmission I.d." –
Also, make sure that you check the type of Laycock overdrive, you also might have a Type-D overdrive which would have been for cars '62-'67. You wouldn't want to use that transmission in your car (even though it would work).
Tom
PS: Questions like this are best posted on the forums, beause people rarely browse the journals!
A transmission with a dipstick comes originally from a chrome bumper B. Later transmissions have a level filler plug on the side of the casing.
You can identify the OD-unit by it's solenoid coverplate, like Tom said. Black label is chrome bumper (until 1974 1/4), blue label is rubber bumper (1974 1/4 on).
You could install a chrome bumper tranny (dipstick) with a rubber bumper OD, but then you would have to recalibrate the speedometer or switch the speedo gear and speedo pinion in the OD (red instead of white). You need to do this, because the speedo will be 25 percent off if you don't. I did the switch and I'm satisfied with the result.
Regards,
Torsten
You need a Member Account to access this feature. Please sign in or register to post a comment or leave a rating.