drmini in aust wrote:
Yes you can get more
torque (on a smallbore) from a radically modded 202 or 295 than a 940. Because, the ports are smaller and gas speeds are higher. Works great for smallbore motors.
But, this costs you time & $$$ for the porting and new parts (big valves, etc etc).
OTOH, a stock 940 (1100S) head with an hour or 2 spent deburring the insides will give
better HP than a stock 295 at minimal cost.
As others have said I agree with notching the top of the block, if you are after HP. You won't get big HP with stock cams.
Torque with a 940 head on a smallbore may be less at lower speeds, however my 1220 motor was doing low 16s at Castlereagh dragway back in the late `60s. And the head was an 1100S with stock valves, double springs and a bit of basic porting.
Mind you the 544 cam and twin HS4s helped...
Sorry I won't be coming down next weekend, as I'm off to Brissy for Matt Read's 50th knees-up.
Thanks Kev. i knew you were going up to Matt's and overlooked the overlapping dates. i hope its a great night for Matt, after what he's been through he deserves a break and a good celebration. My bro & I had planned attending but he cant make it, I have the MITG run this weekend, one of our best:!: Its a must:!: (for me in any case I think you'd understand)
Thanks for the help with the head. It was Matt that told me that including X2 valve springs was not the be-all and end-all. I have only one spare 12G940 on an 1100s engine allocated for an off-road car I will build later so it makes sense to use the 'Waggot' head on my registered 998 car. Plus I'd prefer to run an upgraded cam and i dont want to plane the block etc to a reliable road car.
But what about the valve guides? Can i knock the valves out that are frozen in the guides
Can you please tell me are they easy to get:?:
Thanks in anticipation
Wayne
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..still waiting for the Italian Job sequel to see if the bus went down
