wullie3XV9

Wullie3XV9

Group: Members
Posts: 293
Joined: June 2008 |
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Posted: Jan. 25 2009,15:52 |
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Here's a few pictures of Martin77s handi-work with porting tools. I think he's too modest to do it himself !!  (He gave me permission to post some pics though ?!).






If anyone out there in the U.K. is reluctant to send him their cylinders & heads, ( I was !! ), you have nothing to worry about. Mine survived the trek from Fife, (east central Scotland), to deepest, darkest Devon & back without being lost by "Parcel Farce" !! , & Martins best efforts to ruin them !!. ( only joking Martin. I'm impressed, honest. ) He performed his "not quite SP" spec. porting to my cylinders. I think he's raised all the main ports 1.5 mm from stock, squared of the main exhaust ports to also help increase area, opened out the auxilliary exhaust ports & reworked the Power-Valve spools to match. Both cyl.heads were skimmed. (New squish gap should be around 0.85 mm). No doubt he'll confirm or deny the above details at some point. Time, & a dyno', will tell if I get 50 hp, at around 10,500 actual rpm, at the back wheel with stock R/RS airboxes, 28 mm carbs & exhausts. I'm hoping for around 55 rwhp, @ 11,000 actual rpm, when I get around to buying & fitting a set of Martins hand-crafted exhausts. He has quite a few satisfied customers, see various past threads in here for proof !! He charges £100.00 for porting work, plus a tenner to cover return postage. DO IT, you know you want to !!
-------------- Just when I'm about to make ends meet, someone moves the ends !!
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