Cams

[PSL184]

Anyone know if Mini cams fit a Minor engine and if so which one is equivalent to a 1098 cam?

[bmcecosse]

Yes -Mini cams fit - but most have different oil pump drive - so you need to buy a new pump (good idea anyway) and drill/tap the block because over the years they have changed the location of the fixings!

The 1098 cam is AEA 630. A Cooper S AEG 148 cam is exactly the same (timing and lift) - except has the better /wider cam lobes and has same oil pump drive. Chances of finding one are slim! AEG 510 (later Cooper S) is slightly better timing - and still same oil pump drive, and 2A948 is better again (Cooper 997 cam) - but quite rare, still same oil pump drive though!

After that - you are into the 'spider drive' cams - and new 'spiders' are hard to find although the cams and oil pumps are plentiful! And then it's into the 'peg' drive cams - which continued to the end.
Note for 1275 engine you need 'long shaft' pump - and for 948/1098 the short shaft pump. The spider pump was never made in 'short' version! Although some have been known to swap shafts about!

[PSL184]

Any idea what this cam is Roy?

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[bmcecosse]

Certainly spider drive ! Don't see any other markings - so probably standard 1275 cam. As before - unfortunately there are no 'short' spider pumps. And - spiders are hard to find if you haven't got one!

[MarkyB]

Curses, there was one in the bath and I went and flushed it down the plug hole

[mike.perry]

You can always have your existing cam re profiled which is what I am doing with my Series MM cam.

[bmcecosse]

Make sure they harden it up afterwards!

[RobThomas]

MM cam? Hmmmm. Where are you having it done, Mike?

[mike.perry]

A small establishment in Napton that builds racing engines. Actually the cam is a spare that has already been modified but I don't have any figures for it so they are going to measure it and then decide if it needs any more work on it. The idea is to get a good bit of low down power. A cam that comes in at 3000 rpm would be totally useless on an MM.

[PSL184]

Cheers for that - on the look out for a standard 1098 one then...

[bmcecosse]

I have one - was intending flogging it to you - but on close inspection it's got some pitting on the lobe ramps...........

[Matt]

how about one of these?

http://cgi.ebay.co.uk/Classic-Mini-Kent ... 35a6ab75ae

[PSL184]

it's got some pitting on the lobe ramps...........

So, thats not good then....??

Matt - I wouldn't know if thats what I needed or not - I'm sure Roy will know though

[bmcecosse]

Don't actually have figures to hand for that kent 256. If it has higher lift than standard (and it likely has - most kent cams do) - that makes it difficult with the 940 head............
And I see it's rip-off £10 postage!