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Old 25-07-2009, 10:31 PM   #11
chrisw
2-Wheeled Weirdo
 
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Join Date: Jul 2008
Location: sydney.
Car: '09 GT650r
Posts: 569
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Quote:
Originally Posted by derb View Post
save your pennies or get a loan and get one. best mod ever.
Nah its alright :P
I'll see how this "big-bore" n/a sohc job goes like.
although its not really big bore, im just saying that because the over size number 2 rings are only .5mm by haynes reference, im going the full 1mm and from calculations SHOULD gain about 40-46cc from it.

bringing it to a bore x stroke of 84 x 85

we will see what I can manage in my own garage, though the block and head will obviously get sent off to a shop for cleaning, boring honing etc. ill just get a shop to do the head, its quicker than I will manage on my own, and will be decked either 20 or 40 thou (for perfect mating, and for a tiny bit more comp.)
home special port and polish job, best I can do without a flowbench, I need a new cam anyway, so might as well go SLIGHTLY more agressive, not much though.

plus I think actually having a GOOD amount of compression in each cylinder is going to help the performance alot.
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