I have Guy Martin's guide. I had him installed them last summer for my 12.000km maintenance.
The whole thing, complete mainetenance including valve clearance and his guides cost me 700$ under the table.
He does not have a VDST to clear the maintenance key on the dashboard tho.
The bike is runnnig great , got 20.000km now.
I'm due for new set of timings belt, which I will do myself soon, and will check at the same time if his guides are still in a good shape.
Porting... been talking with Guy Martin a lot about that.
Ask him about his Testarosso heads.
2400$, for a complete porting job, including labor to take the heads off, do the porting, install a new set of racing cams, degree them, and his red (or black) powedercoating.
The 1100DS engine does not require rerouting the oil flow.
He told me he got about 110rwhp with an old 2v air cooled.
If you want to go this way, he is also offering some balancing crank job and Microtec ECU to get the best out of such a setup.
Anyway, he's a guru. Last time I was there I briefly talk about the idea to implant a Testastretta engine in the Hyper frame. I saw sparkle in his eyes. He's great
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