M20 2.8 stroker conversion

[Patrick]

While the Sportster is off the road due to the wish bone issue I've decided to rebuild the engine.

In the process its getting a more aggressive cam and a 2.8 conversion. This involves using a crank from an M52B28 (non TU one from the younger models, the webs are too big on later models) M20B20 conrods (these are 130mm vs the B25 135mm). No other modifications are need other than a spacer at the front of the crank for the oil seal to sit on. This makes the engine square (84mm bore, 84mm stroke!)

Electronics will be replaced with Megasquirt.

Full details here: http://www.msportster.co.uk/detail.asp?cat=22

Patrick

[Patrick]

Re: M20 2.8 stroker conversion

It runs

Turned it over on the start without ECU and plugs. The pressure came up nicely after a short while. Plugged the ECU in and the plugs, and ran the starter after short time the fuel pressurised and off it went

Water pump seems to be defective as it makes a horrible noise sometimes. Initially the engine would die as I came to a stop at a junction but that's sorted itself out after a short while.

Done 55 miles now