Stage 3 kit for sale nice and cheap on ebay

You can get everything from Patrick Racing for way less than that. ECU can be programmed by Michael.

Has anyone gone down the patrick racing road? Thinking of Hi comp pistons, head/valve job and possibly cams. Any thoughts/ advise. Despite baltic weather here. N Ireland, went for a good wee run today.
R

Yes, I have. When we write something on a forum or email its really easy to make it sound not quite what you wanted and give false impression.
You mention "possibly cams" If, on any engine you were upping compression and doing head work a cam is part of that whole deal as you are really altering the original specs.
That suggests you dont have a clear idea of what you are getting into and I just want to (with great respect) point that out.
If you do go down this track then it is Pistons, cam, ecu reflash, exhaust and intake improvements at least. If you add in headwork then you go for the full job which includes bigger valves and hi lift springs.
Happy to offer advice.
cheers Graeme

Thx for reply. I have heard that 500 extra rpm is on the cards. Hi comp pistons should make a good difference though in conjunction with other mods. I have done quite a few car engine rebuilds (mostly classic mini and fiat twin cam.... yes I am quite old ,  and gained a lot of hp/torque by doing a lot of small improvements rather than one big one. That's why i ask, has anyone done this or similar and does it make a good noticeable difference?
R

Thx for reply. I have heard that 500 extra rpm is on the cards. Hi comp pistons should make a good difference though in conjunction with other mods. I have done quite a few car engine rebuilds (mostly classic mini and fiat twin cam.... yes I am quite old ,  and gained a lot of hp/torque by doing a lot of small improvements rather than one big one. That's why i ask, has anyone done this or similar and does it make a good noticeable difference?
R

Hi, 500revs is what you get with either a stage 2 or 3 reflash. The standard engine has no top end and improving exhaust and intake along with a minor reflash (t4,s special version) is about all you can do. Still no top end but a bit more elsewhere.
If you do anything to engine, do the whole job. Hc pistons or overbore will do stuff-all by themselves.
If you do the patrick thing then do the hc pistons, cam kit (which includes different lifters) and the full head job which includes larger valves, higher lift springs and porting. You cant use their cam with standard head. Because of the different lifters you also need their adjustable pushrods and the pushrod covers which are needed for the initial bleeddown. (these covers lift up for adjustment of pushrods)
You get an engine with a really strong top end and still plenty everywhere else. It runs very well with no bad habits.
I call the whole patrick job a stage 4 engine because the original yam s3 kit did not include any head work.
You can include 43mm intake manifolds and injector bodies from a stratoliner (wreckers USA)
For all the effort the result is not that great but I have no complaints. Patrick use changeover parts for some bits and the cams can be from stratoliner for them to modify. They offer a couple of options for going oversize. I went to the largest without a resleeve cause happened to pick up a set easily so bike is now an 1775.
A personal report on how it goes? Well it happens I just did a day at phillip island gp circuit in december. I have never been on a racetrack and went through california superbike school. All have to start at level one which is not a full on track day as they have a program of things to work through.
Still no worries about hammering it down the straight (which you all know from tv) and I wasnt coming through turn 12 very hard but still hit the 6000 limiter in top about 100 metres before the bridge. Thats 235kmh I think (they cover your speedo) and its a strong pull all the way.
I would be very careful of any thing bought second hand that says its s3 or patrick and if patrick then it needs to have all the bits like the hydraulic lifters. Happy to help with any advice. Here we are on dec 17

Many thanks for all that detailed info. Sounds like my winter project is go then.
R

Geez ... all this discussion on cranking out more horsepower at higher revs. In my humble opinion thats not what the MT01 is all about. Thumping grunt at low revs is what puts the smile on my dial. Spose we're all different but no way I'm forking out a squillion dollars for more high end horsepower. Cheers

mmmm?... I've seen too many highly modified bikes become unreliable. If you want top end performance buy a Diavel.
I'm old school and the bike I choose to fiddle with is a 1981 Laverda Jota. I can pull the engine out of the frame and completely disassemble in half a day. Carburettors can be tuned with a screwdriver. The MT is not a bike that is easy to work on ... hell its a job just to replace the spark plugs. Of course it all becomes easier if we pay someone else to do it ... but where's the fun in that.