What all is necessary to install a 944 big bore kit?

Started by ajohnsto, October 17, 2011, 07:19:54 PM

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944SS

Sounds like you want to do the wrenching yourself which is totally doable for the back yard mechanic.  My experience is the the carbie SSs so no re&re tips here but once you have access to the engine, it's pretty straight forward.  These engines respond well to a bit more compression and a few CCs more never hurts either.  You don't mention mileage on your M900 but it's 13 years old so you might want to be comfortable the top end is ship shape before diving in.  I'd be satisfied knowing compression was in spec now. 

Yellow Meanie

Thanks Brad, that's some good info there. I was not aware the cylinders were different.
I originally looked into getting the cylinders done in Melbourne (I am in Hobart). But at over $600 per cylinder, plus pistons, I decided to start looking elsewhere...

And yes, I do plan on doing most of the work myself.
Here's the plan (wish list):

944 high compression pistons.
Power commander 3.
Lightened flywheel.
New coils. (Have also recently installed new regulator/rectifier).
Pod filters? (Purely for coolness. I don't expect any performance gains here)
Heads ported and polished. Maybe larger valves? I'm not too knowledgable in this area... (requires further research, or outsourcing).
Dyno tuning.

While everything is apart, the fairing, tank, cowl and frame will all be resprayed.
Any other parts will be rebuilt or replaced as required.


The bike has done 40000km (25000mi)





brad black

millennium quoted me a stupid amount to send some back once plated, so best if you have a us staging post.  bruce meyers uses power seal in pennsylvania.  electrosil are expensive.

you need some sort of trumpet on the throttle bodies.  fitting pods directly to them will cost you performance.

a larger 44mm inlet valve will allow a porter to change the shape of the port just under the seat, which is a bit odd std.  keep the 38mm exh to stop the valves hitting.
Brad The Bike Boy

http://www.bikeboy.org