ID help please
Turbo Mini Forums

Hi all
I have been given an engine/box but I am not 100 % sure what it is, I think it is a 1275 A+ from a metro but I was hoping you guys could confirm if I give you sum numbers
engine: 12H907AA-53428
Carb is an SU but I'm not sure what size or type, has fzx1409, lzx1511 and jzx 1611 stamped on various bits (think it is a 1 3/4 HIF but not sure)
The gearbox/sump thinggy has Dam 5626 8E672 WYF stamped on it
any info would be great
cheers
mark

http://www.miniresource.com/engine.htm

This may help

standard mg metro 1275 not unleaded ????

Edited by Dangerous on 13th Feb, 2005.

Metro turbo weekend driver,Mini turbo in the making again!

12H at the beginning of engine number means a 1275. Su should also be a 1 3/4" just measure bore.

-MINI CLUBMAN 1380 TURBO-

dam 5626 is latest design right up to end of build

Metro turbo weekend driver,Mini turbo in the making again!

another link...

http://www.manchester-minis.cwc.net/techni...ngine_types.htm

Cheers guys, so I am looking at a metro lump 1275 leaded only with about 57bhp standard form, is that right??
I want to aim for about 100bhp, is this easy enough with this lump??

I thought it was more like 62/63hp for the stock metro 1275 lump...

You keeping it non-turbo or turboing it??

-MINI CLUBMAN 1380 TURBO-

I think initially it will be NA then going to supercharger long term

100bhp takes a fair chunk of money in NA form, forced induction makes it easier to hit those sorts of levels.

My 1380 is running 100bhp and its been fairly well worked by AC.

any unit can be built to whatever spec you need. MG's are a good base for NA but pistons arent any good for forced induction so budget for those

can i just show that on them sites it only says the 12HD16AA engine numbers for turbos but there is also 12HC26AA numbers am i right???

quoted from another site "12HC16AA, from 1987 12HD26AA"
feel free to corect me but it confused me so i found the info out and i like to share
alo, anyone know what they changed as from '87?

thanks, Dan

they changed the main bearing design to the "turbo" one on all 1275's. not sure what else though.

Cheers all, perhapse you can give me an idea of bhp/performance from this engine.
I am planning on keeping the 1275cc but going for stage 3 head, balanced and lightened bottom end and lightened fly wheel, coupled to a Kent (think its a 726 but may be wrong on the model) cam, 1 3/4 SU with ram pipe and K&N Induction, high torque inlet manifold and maniflow outlet to a straight through exhaust.
No Alternator and in a car that will weigh in at around 350-400kg
All sugestions welcome
cheers
Mark

350- 400kg's is very light for a mini, what have you done to it to make it that light

Team Racing

Ah, sorry its not a mini, it a space frame single seat race car
Oh and the 350-400 includes my weight as well

Edited by Big Mark on 15th Feb, 2005.

Well set up I would estimate 90bhp or so from that engine spec. With a stage 3 head, a 276 cam is a bit tame especially if its a race car. I used to have a 286 cam in a road car.........so think about your cam choice.

The performance you will get from that engine in a car weighing 350-400kg will be pretty damn sharp. Should be nicely over 200bhp per tonne:)

-MINI CLUBMAN 1380 TURBO-

should put a smile on my face (and poo in my pants)