11 replies to this topic

[cheezburger]

Hello there I currently own a Morris Minor but mini guys are regarded as the A series masters so I thought I'd pop in and ask here. I have a '67 Morris 1000 it's my daily driver I want to start modernizing it this includes a more powerful engine so I can keep up with traffic. I've just acquired a 1275 from an ital van (for some reason ital vans are low compression 9.4:1 iirc) It will be breathing through a hif44 attached to a MG Metro manifold which is bolted on to a big valve 12g940. It's going to retain the standard cam the exhaust gasses will be exiting the engine through a cast manifold from the ital and through the ital exhaust if I can make it fit.

I don't know what this will produce but he problem is I know it's not going to be enough from what I've driven in the past; a power to weight ratio of around 130 bhp per ton would be nice. Also the car will require lead substitute and if I got an A Series to 100 bhp (car weighs 780kg) on the standard head It's going to be a bit of a pig for a daily driver.

I was going to see how I get along with my 1275 but in my heart of hearts I know I'm probably going to have to junk it for a K series/zetec. I was thinking maybe I could 16v and inject the A Series which would be the best of both worlds really.

So do you think It's possible to make a nice reasonably fuel efficent, long lasting, 100 bhp A Series?

If so what's the best route, how much roughly have you guys spent getting the A Series to this?

I've people have been putting K100 heads on the A Series all in how much has this set you back?

Thanks in advance.

[philc]

imo to achieve 100bhp at the fly you are looking at a 1380, some people have got this power from a 1293, you will need a big head stage 3 minimum, good carb either 1 3/4 su or 45 webber, big cam, 286, 296, sw05 i have a crane vp3, good set of pistons, change dissy, you would get away with standard box but i would suggest you put a 4 pin diff in. The main factor is cost anything imo from 2k upwards to get a good engine, or you could take your chances and buy a complete used one. There is always the turbo option. The BMW K series conversion you would be able to achieve that with a 1275 block have a look here http://www.efiminis....l.com/index.php, http://www.turbomini...orums/index.php for more ideas

[cheezburger]

Hello thanks for the links, I'll have a look but I've been thinking it might just be a much better idea to put a K Series in. I'm generally thinking of longevity as it would be used every day, I think I'm asking too much from an A Series. I'll register on that forum and ask but as I'm hear, if I put a 16v k head on my 1275 with injection, got it mapped properly how much do you think I'd make?

[Guess-Works.com]

Just one minor ( ) issue which may be worth mentioning...

Do you still have drum brakes on your Moggy... ??? if so, I'd strongly recommend you upgrade, I'm sure there's kits which will allow you to upgrade to disks on the front.

[Udo]

Have a look at the graph on this page

http://www.specialis...hantPageDisplay

That will give you an idea of power outputs. (My engine is the 1380 16v sprint one )

In my opinion what Philc suggests would give you the power you seek but not really great for a daily drive.

The 1293 8v BMW K head from that graph was nothing expensive in terms of high spec cranks etc just what would be considered a sensible rebuild for a higher reving engine. I know you said 16v but an 8v would I reckon give you what you are looking for

Costs vary depending on what level of work you can do yourself and 8v heads are cheaper then 16v

This is the youtube video of the 1293 8v engine



There is loads of info over on efiminis, we have someone fitting a 16v in a midget also.

Ian

[Ethel]

1300 Montegos and Maestros also use inline A+ Cranks and have decent manifolds. I'd have thought a complete engine and box swap may well prove easier. Forced Induction is another option, a Moggy with dump valve whoosh

[philc]

Have a look at the graph on this page

http://www.specialis...hantPageDisplay

That will give you an idea of power outputs. (My engine is the 1380 16v sprint one )

In my opinion what Philc suggests would give you the power you seek but not really great for a daily drive.

The 1293 8v BMW K head from that graph was nothing expensive in terms of high spec cranks etc just what would be considered a sensible rebuild for a higher reving engine. I know you said 16v but an 8v would I reckon give you what you are looking for

Costs vary depending on what level of work you can do yourself and 8v heads are cheaper then 16v

This is the youtube video of the 1293 8v engine



There is loads of info over on efiminis, we have someone fitting a 16v in a midget also.

Ian

You could achieve driveability with big cams if you used a megajolt system, again extra extra cost

[rozzer1275]

could fit with your engine and that carb
well ported head £700
big cam say286 £100 may need to do folowers etc £+
1.5 roller rockers £180
may get 90hp
bit more hp with weber or twin su

the clutch should be able to handle it, (think it is a simular clutch to meastro 1.3 and 1.6 R series)


or bore too budget 1380 self ass £800
well ported head £700
big cam (may come with engine kit)
1.5 rockers £180
should just scrape 100hp
again bit more with weber or twin su

as above but with
more expensive 1380 (say omega pistons so posible higher compressoin) £1400
105hp
again more with weber or twins

megajolt is a good, about £300 all in (+fitting and rr tune laptop required £££), it got me 2% more top end power and 19% more torque in mid range. (and it starts better, is less camy and smoother)

[cheezburger]

I'm going with the K series now, thanks for all the information anyway. I have one last question: how highly would you rate megajolt?

[rozzer1275]

I love it, diy programable igition ecu at less than half the price, I gained 20% more torque in the mid range and 2%hp at topend, on my tuned engine, will gain little on a standard engine and probably nothing on a standard injection engine.
its basic but loads better than a dizzy
it blends figures between adanvce sites.
has a basic rev limiter.
outputs for shif lights fans pumps etc. (which I am gaing to use to turn my nos on from 3000rpm)
it can hold 2 maps and switch between them (again i will used it with nos and retared ignition when the gas is on)
have not done many miles with it so i can not comment on its reliablity.

if your going k series and keeping it standard might as well use the standard ecu.

[minidaves]

why do u need 100bhp in a moggy minor, now a nice big torque curve and around 75bhp would make it quick, able to keep up with the traffic and some, and make its self reliable into the program too.

just make sure you improve the drive train else it will not go anywhere

dave

[philc]

I'm going with the K series now, thanks for all the information anyway. I have one last question: how highly would you rate megajolt?

once it has been setup eg mapped properly then it is well worth the money