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As it says am after vac 45 rod length center to center in mm if anyone has it available please. I can work it out but would rather not take the rod out if I dont have to. Cheers

Can someone please tell me the stock intake numbers on the latest vac 45 as in open degrees and close degrees. Thanks

Can someone tell me what the rod lenght is on the new cmb 91RS EVO as in center to center. Is it the same as the older 91RS? If so I have that mesurement. Thanks

Which one of these 67hr cranks is newer in design???

Anyone done any testing on header id's? Larger/smaller than stock, what differences does it make if any. ( mainly for larger motors)

I know there are posts about this but they are old. Just curious what people are using and had success with, as for keeping the crank from rusting and keeping internals lubed well. Things I've used - wd40 while turning over. Then some motor oil ( works fine but people say WD can be bad for...

Wanted to take a rs crankshaft apart and put it back together again. Is it easy or hard to do with limited equipment? Thanks

Just curious how many people clean the top of the liner intake ports as in the tiny rough chrome line after chroming? And do they find any improvement or not. I've tried cleaned and not but not sure if its any better.

Any opinion on best motor for a single 90 rigger. 91rs, 101 or vac 91. Any suggestions for good torque moded or stock.

looking for older style 67hr cast Carb spray bar. Thanks

can someone please tell me if this piston is supposed to be cut like this from factory or has it been cut by someone. i realise it should have a window but not sure about the cut all the way down. its out of a latter model 21 LS that i bought second hand. Thanks

if you have say a 15 thou head clearence on a 91rs with a dish piston and you change piston and liner to a flat top piston, do you use a different head clearence as you are changing the combustion chamber volume or use a different head button? or use a larger head clearence to account for this?

curious of some sugestions of what pipe works well for mac 84. i have the original parabolic pipe but have not been overly impresed. also curious of lengths.

mac 84 has been used but in excellent condition, bearings were changed maybe 5 litres ago, compresion good,not like new but still ok. everything else internal excellent .still performs well. have an excellent condition spare liner aswell.. $330.00 pics available on request pm me with your e mail...

please let me know if you have any mac 67s for sale new or used.

just wanted to know if anyone has one of these i want to run 14s or 16s octura props, i wanted some advice on strut depth. do you run it at roughly half the shaft matching the bottom of the rear sponsons or do you run the strut deeper? yes this is for the same boat that is for sale as i have not...

coyote daytona signiture series, original don pinkert very rare,sighned by don as of 93 fibreglass tub,has had light repairs to turn fin sponson, in excellent condition otherwise. comes with everything except motor, including custom tank and hopper tank, last motor in boat is a mac 84. is...

i think the motor is called a competition 21. does anyone know who was the ops dealler in the states so i can ask them if they have any parts?

wanted ops con rod for 21 not sure what the motor is called it is not the normal pro, but it is the one that has the extra mounting holes at the front of the motor.