21 replies to this topic

[AndrewJ530]

Hi everyone,

i've read on here before (can't find the post now) that you could fit a new camshaft without removing the engine by cutting a hole in the inner wing?
Is this actually possible?
I would prefer to do this when i get my own pride and joy because it will be my daily driver and i don't think i'll be able to take the engine out.

Thanks,

Andrew

[insamoufonyx]

sounds odd, im pretty sure the tappets will just fall out inside the engine you try that?

[AndrewJ530]

I don't have a mini so i can't try it .
It's just for when i do get one because i want to do some performance changes.

I thought the tappets where on the rockers?
Do ya mean the cam follwers?

[paulrockliffe]

Yes, you can do it this way, though I don't think it's particularly easy. You would need to remove the head, so you can remove the push rods, then use a magnet to lift the cam followers out first.

[Big_Adam]

Yep, as Paul says. Just need some magnets. Some BLOODY strong magnets just to make sure. I suggest rare earth ones.

EDIT

AH! You have a 998. Just open the tappet chest and take the follower out. Simple.

Edited by Big_Adam, 10 August 2008 - 10:59 PM.

[AndrewJ530]

Ah right, i think thats probably the way i would do it. I don't have a crane and my dad is 57 so i doub't he will want to lift a mini engine with me .

Are the followers lifted out of the 2 panels at the back of the block? or am i getting myself confused agian lol

Cheers,

Andrew

[AndrewJ530]

Ya pipped me to the post adam, are the tappet panels the two on the back of the block?

[GraemeC]

Yep.

[DaveRob]

Hey Andrwe Im near you and have an engine crane if you want to do this one weekend....

Rob

[Jupitus]

I did this on my old 1100. As people have said, carb and manifolds off, head off, pushrods out (keep them in order) then tappet chest covers off and remove tappets, again keeping them matched to their respective vales/pushrods.

Radiator out, timing cover and gear off, then you have access to the end plate and can remove the old cam...carefully! To get clearance I cut through one of the radiator grill bars and bent them away, then the cam comes out via the n/s wing.

It is fiddly, but eminently doable if you are careful.

[GraemeC]

Do you really need to disturb the head?

[Jupitus]

Do you really need to disturb the head?

I can't see a way not to... you must remove the cam followers, and to remove them the pushrods need to come out.... hmmm.... I guess you could just lift the rocker assembly off... hmm..... *ponders*

[Waffs1984]

Yes you will have to disturb the head.

Can i stress that you cannot just take the rocker assembly off as 4 out of the 9 head bolts on a 998cc hold the assembly down and you must always remove and replace in order and tighten ot the specificed torque!!!

Simple to remove the head, but you'll need a new gasket set for about £20. (NEVER reuse a gasket, especially a HG!).

Thanks for asking this Q tho, i was wondering the same thing and now i know!!!

On a similar topic of working without taking the engine out (without hijacking the tread!) according to Haynes you can change the clutch without taking the engine out... true?

Matt.

[duncancallum]

you can undo the split pin and slide the rocker shaft out so you can do it in situ with out disturbing the head

[998dave]

On a similar topic of working without taking the engine out (without hijacking the tread!) according to Haynes you can change the clutch without taking the engine out... true?

Matt.

True, but tricky, you have to undo the engine mounts, jack that end of the engine up a bit, (with everything else out of the way, and then you can get bell housing off, and clutch out, but it's quite a pain, and tight from what I hear.

Would be easy with a removable flip front though!

Dave