another thought....I was going for triple webbers but what about triple throttle bodies? has anybody done that?
Triple Webers would look and sound great but can be a bitch to keep balanced.
Most flywheels can be lightened as manufacturers err on the heavy side in order to help normal drivers and to help keep the engine running smoothly even when neglected. The degree of lightening depends on the proposed use, the suitability of the existing flywheel to take lightening safely, your acceptance of a lumpy and uneven tickover, trickier standing starts and how much you want to spend.
On my Elan, I am still undecided on which way to go. My guru wants me to fit the heavier Cosworth 4x4 flywheel so that there is very little chance of stalling on the line. I am not so sure that this is necessary as the car will weigh less than 650Kg and have at least 520bhp.
10 pot stoppers seem a tad OTT and expensive. Have a chat with Jeff at HiSpec (based in Dartford):
www.hispecmotorsport.co.uk
01322 286850
When decking pistons, make sure there is enough meat left otherwise there is a risk of crown collapse, especially with increased CR.
If using a longer throw crank, check that the rods don't foul the bottom of the bores and the crank clears any sump baffles, pickups and that the reciprocating parts don't splash into the sump oil, etc.
Larger capacities don't always result in a better engine. Once you start to alter throw/rod and bore/stroke ratios all sorts of issues raise their heads. Torque and BHP curves can change dramtically and not always for the better. For example, a small change in the throw/rod radio can dramatically alter an engine's response to throttle imput. However, I know diddly squat about BMW engine charateristics so I suggest that you do a lot of research prior to splashing the cash.
unds like an interesting project. Keep us informed.
