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Trevor Jones · 08-23-03, 07:45 AM

Lee,

As Julian said, nice drawing. Sorry, I didn't get back to you sooner, I've spent the last 3 days tearing down and rebuilding a friend's diesel injection pump; (lots of fun).

The differences between our two set-ups puzzled me so I looked a bit closer into the details. It might be worth checking one of the assumptions I made in my previous post; ie that the centreline of the crank is on the plane of the base of the block.

I went back and checked this and found that the crank CL is in fact about 1.5" above the top of the sump pan. I am not using a Ford block, so yours could be different. To me, this explains the differences, it also means that the R30 and R21 gearboxes have the same vertical offsets between input and output shafts (70mm).
Sorry if I mislead you a bit, but without having a Ford block in front of me, I had to make an assumption. The good news is that if the Ford block is similar, you will wind up with similar halfshaft angles.

Good Luck and sorry about the confusion if I caused any.

Trevor

08-23-03, 07:45 AM	#9 (permalink)
Trevor Jones Rookie Join Date: Oct 2002 GT40: Ontario Canada Posts: 54 Rep Power: 6	Re: Low Engine C of G / Inverted Gearboxes Lee, As Julian said, nice drawing. Sorry, I didn't get back to you sooner, I've spent the last 3 days tearing down and rebuilding a friend's diesel injection pump; (lots of fun). The differences between our two set-ups puzzled me so I looked a bit closer into the details. It might be worth checking one of the assumptions I made in my previous post; ie that the centreline of the crank is on the plane of the base of the block. I went back and checked this and found that the crank CL is in fact about 1.5" above the top of the sump pan. I am not using a Ford block, so yours could be different. To me, this explains the differences, it also means that the R30 and R21 gearboxes have the same vertical offsets between input and output shafts (70mm). Sorry if I mislead you a bit, but without having a Ford block in front of me, I had to make an assumption. The good news is that if the Ford block is similar, you will wind up with similar halfshaft angles. Good Luck and sorry about the confusion if I caused any. Trevor