Dam4818 gearbox

[tramper01]

Does anyone know what dates these A+ gearbox's were used on Minis? I vaguely remember some A+ gearbox's were used on 1275 GT"s while still using an A series block and wondered if the 4818 was that box??

[Spider]

1979 to early 1982.

They are probably the weakest case they made, very prone to crack the centre web. If you have one, have a good look around the threads for the Mainshaft Bearing Retainer, almost certainly there'll be some.

Yes, they were fitted with A Series engines, I have one in the workshop awaiting overhaul presently, for the original owner.

[tramper01]

So around late 78 to mid 79 when the first A+ blocks came out then they went onto DAM2886? I've owned 1 x 1275 GT that had the 4818 then the rest Ive owned had the DAM2886 which was from a 1980 GT

[Spider]

They may have. There was a period when there was a mix of A and A+ Blocks being fitted.

My first Moke, Purchased new by me, was dated October 1979 had an A+ Block and a 4818 Gearbox. The engine I have in the workshop was 4 cars before mine and had an A Series on the 4818. These engines were in all technical ways, 1275GT engines, imported by our local Leyland Factory as CBUs. There was a 6 - 12 month lag here from the UK.

The 2886's actually came after the 4818's. They appear to have only been n production a short time, less than a year and likely were being fitted in the same period as the 4818's.

[maxidave]

My 1275GT was first registered in March 1979.It had an A series engine.The gearbox was a DAM 2886 with the 3168 laygear and 18mm mainshaft
nose.The gear cluster has A type gears,not compatible with A plus gears.I still have the complete unit (in parts).The car met an unfortunate end.

[tramper01]

That's all very interesting stuff. It seems as thought there was no definitive cutoff point with the gearboxes as opposed to the A/A+ blocks transition ie at #26400.Thanks for replying.

[tramper01]

https://www.7ent.com/pages/cat95/opr-pg049.html Has some useful info.