History of a Lola T492 Sports 2000 chassis?

[911thillclimber]

finally, a bit of garage action.

Got my heads back from The Head Shop in Warrington who have machined them for twin plugs.
Great to deal with, promised 3 weeks and a good price, ready by 3 weeks at the same price, no surprises, price quoted inc VAT, what a refreshing change.

Bought a nice new valve lapping stick with supple rubber cups so grip these huge valves, and after clearing the carbon from the exhaust ports and re-fitting some studs (removed to access the area for machining) finally ground the valves on one head, set the small temporary springs to hold the valves tight and all fitted to the heads with shim-less assembly but the titanium top caps to measure the height for the racing springs.
This method works a treat, no fancy £110 tools, just 2 simple springs, £2.00 each.

With the tension on the two valves, 2 plugs in tight, inverted the head and filled the combustion chamber with white spirit to wait for leaks. One drop came free after 35 mins when a fellwe DDK'r arrived!

Drained the spirit off and measured the distance from the underside of the top cup and the lower spring seat.

For the springs I need close to 36mm on both valves, so by adding the right number of shims managed to get to 35.8 and 36.2mm. Can't get closer as the shims are in 0.5mm thickness only.

Springs in tomorrow and that will be one head done, 5 to go.

My main crank bearings and chains cleared Customs today, so they will be with me end of next week.
Another long wait then for the pistons and rods.