1600 bore / stroke

[ovalracer]

Just bought a 1600 engine to use in my racer, anyone know the bore / stroke of these, only got it yesterday and haven't had chance to pull it down yet. Has anyone ever bored these further? what piston did you use? being a racer i need it as square as posible. Did want a 1400 originaly but this came up and it was the right money. cheers lads, good forum by the way.

[Rob-16v]

Iv seen 1650's dont know bout anymore, it makes cooling worse and melt downs easier.

[Snowface]

1mm oversized pistons will give you 1640cc or close to that.

Standard is 1598cc
Bore - 79mm
Stroke - 81.5


You can get 1.5 or 2mm oversize i think but they are less common and arn't found in normal parts catalogues.

[ovalracer]

Oh that's not too bad, I thought it would be really undersquare for some reason, so if i can get +2mm pistons it'll be near as damnit square, double handy. How about headwork on these? any real gains to be had on a 1600? Anyone had any experience with a race spec one of these before? cheers lads

[Stuart]

dan/jims 1650's are about as close to race spec as you get (bar russ's old engine)

head work is a total benefit, bigger valves, lots of good proper porting etc and away you go ;o)

[ovalracer]

I can get an old 1300 grp a head, all the group As have gone 1400 and you can't have headwork with a 1400, this has slightly bigger valves and a fair bit of porting. Think that was bassed on a 1600 head as a kick off so that might be the fella to have then eh, Blimey can't wait to build it now! Any cheap shells in the portsmouth area give me a shout 07947747566 cash waiting! Kent ast2 for sale also