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Old 12-30-2018, 01:46 PM   #48
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Join Date: Oct 2018
Location: North Cali
Posts: 750
During the holidays I had some time to work on the heads. The valves and seats needed a little resurfacing, so I added some grinding material on the valves and started the procedure with a conventional lapper.

I shortly realized this would take forever for all the 24 valves, so I looked for a somewhat quicker solution and I came out with this super-special tool using a piece of fuel line from my motorbike and a few hose clamps:

About 30 sec spin for each valve does the trick. Make sure you lube the valve guides before doing this.

Before/after conditions:

After another thorough shower in the sink the head is ready for reassembly with new seals.

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