43 replies to this topic

[MiniBonkerz]

did anyone else give this a go?

[mk1leg]

I've been doing them this way for 36years ...................ever since I has a mini.............way back then..........

[Mart!]

its also well described in the haynes book

[MiniBonkerz]

I have done it was was asking if anyone else that had not done it before i also have a haynes and it was a good tool

[Ipod]

I got a haynes but was to lazy to open it up to the correct section

[Spitz]

I got a haynes but was to lazy to open it up to the correct section

It's actually quite easy to remember....no need for Haynes.
Use the rule of "9"

8 is open check 1
7 is open check 2
6 is open check 3
5 is open check 4
4 is open check 5
3 is open check 6
2 is open check 7
1 is open check 8

notice they all add to 9. So, no need to check the book any more. If 6 happens to be closest to open when you start, check 3...rotate crank to whichever valve is due to open next...check corresponding number.

[cooperkelly]

In keeping with the name of the thread, and assuming I'm an idiot before I take the rocker cover off, what am I looking for when you say an "open" valve?

Thanks!
Kelly

[lrostoke]

Watch the springs on the valves, when the spring is squeezed (compressed) the valve is open.

[Ethel]

you can't have a tappets topic without the John Twist video!

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[cooperkelly]

Awesome!! John Twist had me a little lost at one point with his diagram, but I certainly got what he was saying!!!

One big question though- he states you should always do it with the engine warm... everything I seem to have read say it has to be stone cold?!!

[Ouster]

For performance engines, do we want 12 thou on exhaust, and 15 thou on inlet? Or is the other way around?

Edited by Ouster, 24 March 2010 - 03:06 PM.

[Ethel]

Warm or cold would depend on if the figure you have is for a warm or cold engine. Warm would be better, if you have both, as the engine will obviously be warm when it's running - just avoid getting burnt. Of course, it would also be difficult to set it warm if you're still in the middle of building your engine.

15thou exhaust - it gets hotter.

The point JT was trying to make with his diagram was that you don't have to fiddle about getting one valve (eg 7) exactly at maximum lift to check the other (2) - the clearance gap will be exactly the same for a long way either side of max lift on the other valve.

[tmsmini]

It is also easy to rotate the MPi engine with a hex socket in the alternator pulley.
Terry

[Ipod]

It is also easy to rotate the MPi engine with a hex socket in the alternator pulley.
Terry

Even esier to jack the N/S up stick it in gear and turn the wheel clockwise