does anyone have a machine shop near them that will balance a crank for my b234?? im looking for high rpms with this motor and all the machine shops in the area wont touch them... any help is appreciated...
thanks
If you're looking for the motor to make high rpm, you will not only want to balance the crank shaft, but you'll want to get it knife-edged as well. Will not only reduce the weight of the CS, but it will also help wisk the oil from it more quickly. You may also want to add in a crankshaft scraper as well, again to wisk the oil away on high rpm applications.
well i want to be able to run an aluminum flywheel( the one nick sells) and i was told that the saab cranks need to be balanced before using that light of a flywheel?? correct?? if it were possible i would like to see between 7500 and 8000 rpms...
you're not going to see power in the 7500-8000 range in the Saab B2xx motors without a lot of work: Port&Polish, bigger valves, high lift & duration cams, non-hydralic lifters, match ported intake runners, etc etc.
this isnt going to be any ordinary b234 its getting a full rebuild with je internals and stock top end for now... then once everything is running correctly and my bank account increases im doing valves springs cams and a port/polish... so how safe is it to run a 7.5 lb flywheel without balancing the crank and running relatively stock rpms???
I agree, should be an issue....just make sure the new flywheel is balanced. Its best to have it balanced in conjection with the clutch disk and pressure plate that you will be using
To make those sort of RPM's 7500-8000 its necessary to go to dry sump aswell as these engines can have oiling probs aswell at high rpm. Maybe add in an oil resrictor for the solid lifters to keep vital oil for crank and polish/smooth the oil galleries for improved flow
id say its worth doing, with billet flywheel and lightened and balanced crank the car revs so much more freely. it would be even better with lighter forged pistons aswell.
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