Help - Search - Members - Calendar
Full Version: Drilling and tapping a V8 flywheel for a series clutch
LR4x4 - The Land Rover Forum > The Lounge > Tools and Fabrication
jamesmorfee
Ok, not quite, but I managed it today with very little in the way of accurate machining tools. Credit must go to Mark (aka Bald T**t) who some of you will know from Shires, for suggesting this method.

Obviously the pressure plate needs to sit dead centre on the flywheel. Problem is...how do you know when it is?

Firstly, I measured the width of the pressure plate (288mm). Then the width of the flywheel (327mm). The difference in diameters is therefore (327-288) 39mm. The difference in radius is then (39/2) 19.5mm. So the pressure plate needs to sit 19.5mm in from the edge of the flywheel.

Armed with this knowledge, I made a bracket which bolted into a bellhousing bolt hole. On the end of the bracket is a bolt (sharpened to a point on a grinder). By adjusting the postion of the bracket, the bolt needs to sit 19.5mm in from the edge of the flywheel.

Click to view attachment

By spinning the engine on the starter, you end up with a nice circular line - this should be dead central to the middle of the flywheel. I actually made two lines - one for the outside edge of the pressure plate, and another for the centre of the bolt holes.

Click to view attachment

The rest is easy! Pop the flywheel off, plop on the pressure plate, mark and centre punch where the holes should go.

Click to view attachment

Then it is just a case of drilling (using my Aldi special mini press drill) and tapping the holes (5/16 UNF).

Click to view attachment

And voila! One flywheel with series clutch. As far as I can tell with my measuring devices, it is dead central.

Click to view attachment
david1701
SENSIBLE
good plan mate biggrin.gif
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.
Invision Power Board © 2001-2008 Invision Power Services, Inc.