10 replies to this topic

[Tomf]

well iv been offered a 1275 GT engine and i was wondering if its the same as a normal 1275 or are there some differences?

[mike49]

i THINK that 'GT' was simply the name given to the car to make it seem more special than the standard clubman with its bigger engine, and hence the 1275 engine isn't different from any other. correct me someone if thats wrong... but as if BL or BMC would ever have bothered to make different engines!

[Tomf]

No i didnt mean different engine itself, but i mean has it got anything different from a normal 1275, for example a 12g940 head, different cams, etc...

[blacktulip]

wasnt the gt box different? different ratios?

[stardude]

i think the gear box is close ratio

[dklawson]

It's different.

The 1275 GT was the model designation given to the Cooper-S when the agreement between BL and John Cooper expired. A 1275 GT engine will be very similar to a Mk3 Cooper-S engine. I don't remember when the switch to rod-change gearboxes happened, but if it's sitting on a gearbox it's also likely to have the close ratio Cooper-S gearing. As for the head... I don't know. The original Cooper-S would have had an AEG-163 head but they were prone to cracking. It may have an early 12G940 head... I just don't know. When you say it's been offered to you... if the price is reasonable, if it's complete, you should certainly pick it up.

[Tomf]

Thanks for that info once again you have come up with all the top information Cheers

What would you say is a reasonable price?

[dklawson]

Sorry... what that engine and gearbox are worth there and what they're worth over here aren't comparable and I wouldn't hazard a guess. I can tell you that three years ago I paid $200 (100 GBP) for a 3-synchro -S gearbox in pieces just to have the parts. A complete engine on a working gearbox would have been worth a mint to me in spares alone. But... that's over here.

[Retro_10s]

Yup they're different.

Closer ratios though final drive is thes same 1:1 (GT box)
12G940 head
Twin carbs as standard i believe

And of course,.. if it really is a GT lump, It'll be an Aseries, not A+

P.S> should be 11 stud too iirc...

Edited by Retro_10s, 28 August 2007 - 08:36 AM.

[taffy1967]

No, single carburettor for the 1275GT and I believe the final drive changed on later models (unless there was a special tuning option? Well there was the rare special tuning 1275GTS).

I don't think It got other motorsport proven stuff like the Cooper S nitrided crank either?

[paulrockliffe]

I've read a list of changes between engines somewhere - The Bible perhaps?