Valve clearances.

Cool shim... ta.

Front head Exhaust clearance - 0.15mm (should be 0.20-0.30mm)
Front head Inlet clearance - 0.13mm (should be 0.10-0.20mm)

Rear head Exhaust clearance - 0.15mm (should be 0.20-0.30mm)
Rear head Inlet clearance - 0.14mm (should be 0.10-0.20mm)

Rear shim - 1.26mm (Should be 1.75mm)

Checking the front shim after dinner, expect it will be the same.

[flymo]

thought that it was pretty unusual to see a valve clearance out of tolerance on an SV, let alone all of them. Is it a high mileage engine?

Oh yes, its done 71k now.

[northwind]

Mine made me giggle, 45000-odd miles on it now without a single shim needing changed, which would be decent enough but then, it's had its cams swapped too, and the new cam was so closely toleranced that the clearances were identical afterwards

Well it looks like I need a shim that 1.20 in size, according to the graph in the Haynes manual. 4 in total.

[flymo]

Originally Posted by Grinch

Oh yes, its done 71k now.

has it ever needed shimming before or is this a first?

[jambo]

Originally Posted by Grinch

Front head Exhaust clearance - 0.15mm (should be 0.20-0.30mm)
Front head Inlet clearance - 0.13mm (should be 0.10-0.20mm)

Rear head Exhaust clearance - 0.15mm (should be 0.20-0.30mm)
Rear head Inlet clearance - 0.14mm (should be 0.10-0.20mm)

Rear shim - 1.26mm (Should be 1.75mm)

Checking the front shim after dinner, expect it will be the same.

Dan, you've only given 1 inlet and 1 exhaust per cylinder, does this mean the readings for both inlet and both exhaust on front and rear cylinders were exactly the same, or did half the clearances end up in tollerence?

Yep, sorry both values came out at the same left and right.

Originally Posted by flymo

has it ever needed shimming before or is this a first?

Ah see your working on the assumption that I had looks before, so this is the first time. lol.