Cams!

Mini Technical Sections Problems, Questions and Technical
1

I need help choosing a cam!

heres the spec of my engine so far;

Heres my list of what I am doing to my little 1293 engine…

> 1275 rebore to 1293
New pistons (cast)
New/reground crank wedged and polished
Pre verto flywheel
Rebuilt box with a transX Diff and a 3.44 Final drive
1.5:1 rockers
stage 3 head
single 1.75" SU - Might upgrade to twin 1.5" SU’s later
Turbo clutch
12" wheels
Std drops
Maniflow inlet manifold
the new phase 2 Maniflow LCB
a stright though 2" Maniflow exhaurst S/S with just a C/E Backbox

Now the only thing I need to choose is the cam.

I do want something not too racy for town, as I don’t want more points for speeding, but I do want something that lets hell loose on the open road/ countrylane racing or track day!

I don’t mind a little bit of lumpyness, as am not lighten the flywheel, so should keep spining, in traffic!

There has been two choices I have been looking at, either a Kent 286 cam or the SW10 cam.

This will be a road going car, so MOT must be passable, and like I said, I won’t somthing that’ll turn a engine thats ok in town, into a firebreathing lump, out on the open roads!

Not really lookin at top speed, just top torque and top power available, but tame enough for sitting in traffic!

Edit: does anyone have the powerband figures for both cams…
I.e
Cam A, is 2000-7000rpm
Cam B, is 3000 - 8500rpm

2

Personally I’d ditch the 1.5’s and have a 296

3

Or have both!

Also go with s/c drops as they will reduce the power loss thru the trany.
Normal diff with a comp pin will be up to the job too.
Grey diaphram with rally plate instead of turbo clutch.
MG Metro inlet manifold.

4

personaly i would use a sw5 cam and the 1.5’s

dave

5

Thanks lads…
Might go with your idea Rich, least I’ll get the sound of the S/C

Only thing playing on my mind is, a 1293.. and a K286 cam… will it pass imissions at MOT?

6

What year is the car? There are different emmissions levels for different ages.

7

I think a engine utilising a 286 cam, properly tuned should easily pass emissions, just make sure you have a CAT if your supposed to.

My 1425 had a much hotter scatter cam and I never got pulled up on emissions, and that engine even burnt oil!!