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B18 90 hp Engine 120-130 1963

posted by  B20Paul. on  Tue Feb 25 18:29 CST 2020
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

Looks great except,
1: B18 conrods, bin them and upgrade to the early B20 rods, direct swap.
2: D cam is pointless, it flogs the the valvetrain hard without having any meaningful useage (Other than ITB) With stock springs I would use a K cam, much kinder. B20B/E/F +4° advanced, B20A +8° advanced with intake lash loosened up to .022". With high compression a K on the inlet combined with a longer duration exhaust lobe will give a bit more everywhere on an injected or twin SU car. A3 Cosworth profile works great with the stock springs.

Other stuff: I put a regular O-ring behind the stock O-rings on the oil pump pipe to prevent a cold start pop out. Upgrade to flywheel bolts & and use hardend washers under the flywheel & head bolts. It is worth a cut across the top of the head (while the valve guides are out) if you are going up to hardened washers.





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