The collection of parts is growing and in no small part to forum members who have posted up advice and tips or sold parts they no longer need.
It is time for an update as this evening i have done a dry build to check and set cam timing prior to checking piston to valve clearance, the results are interesting.
This whole thread started off with my question over piston to valve clearance and the effect a maximum head skim might have on this figure, also; will there be anything to worry about in terms of collisions and how much will it affect the cam timing like some have suggested?
I got hold of a Tommis Billet cam pulley and this evening fitted it all up and measured from TDC on piston #1 - set using my home made piston dead stop tool and a temporary pointer.
Process:
#1 TDC set
Cam sprocket circle marks pointing at each other and intersected by half by the top edge of head
Cam pulley notch lined up with the V groove in cam cover
To achieve all this i had to advance my pulley by just over 4 degrees. (I've read each mark is 2 degrees but that wasn't specific to Tommis pulley but you can see for yourself in the pic what it is)
It seems that a max head skim can have quite an effect on timing. I'm sure it would have run and probably very well but there is something satisfying knowing that now it is set EXACTLY as the factory intended.
Well happy and the next part is the crucial bit - seeing how much a plasticine snake lying on top of my piston gets squashed after a couple of rotations...
It is time for an update as this evening i have done a dry build to check and set cam timing prior to checking piston to valve clearance, the results are interesting.
This whole thread started off with my question over piston to valve clearance and the effect a maximum head skim might have on this figure, also; will there be anything to worry about in terms of collisions and how much will it affect the cam timing like some have suggested?
I got hold of a Tommis Billet cam pulley and this evening fitted it all up and measured from TDC on piston #1 - set using my home made piston dead stop tool and a temporary pointer.
Process:
#1 TDC set
Cam sprocket circle marks pointing at each other and intersected by half by the top edge of head
Cam pulley notch lined up with the V groove in cam cover
To achieve all this i had to advance my pulley by just over 4 degrees. (I've read each mark is 2 degrees but that wasn't specific to Tommis pulley but you can see for yourself in the pic what it is)
It seems that a max head skim can have quite an effect on timing. I'm sure it would have run and probably very well but there is something satisfying knowing that now it is set EXACTLY as the factory intended.
Well happy and the next part is the crucial bit - seeing how much a plasticine snake lying on top of my piston gets squashed after a couple of rotations...
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