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  1. #31
    Junior Member fazil's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    Did you use a power commander to adjust air/fuel ratios?
    Other than technical info, how does it feel on the road?

  2. #32
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Quote Originally Posted by FinalImpact View Post
    SWEET!!!!!! Man I am happy for you! Good to see that curve flatten out from the map alone!

    Very impressive!! Have you had a chance for a good 3rd gear pull? Its where they actually added some ignition advance. If it had it in 1st and 2nd, it would be way better!

    Be safe!
    Thanks Randy. I haven't ridden the bike yet since the tune. Very eager to though. Maybe this Wednesday at the drags but I really wanna take my MV Rivale this time. decisions decisions.

    Quote Originally Posted by fazil View Post
    Did you use a power commander to adjust air/fuel ratios?
    Other than technical info, how does it feel on the road?
    Hi mate. I had a pc3 installed. Bike was tunned on a mainline dyno with dynojet software. I haven't tried it since the tune. I tried it before though, it felt like it had more power across the whole rev range. I'll be sure to update this thread after I get a chance to ride it.
    I JET

    1991 Yamaha 50
    1989 Yamaha 80
    1989 Honda XR80
    1988 Honda XR100
    1993 Honda XR250
    1997 Honda XR400
    2007 KTM 450 EXC
    1994 Honda RVF 400
    2010 BMW S1000RR
    2010 Triumph 1050 Speed Triple
    2012 BMW S1000RR
    2013 KTM 1190 Adventure
    2014 KTM 1290 SuperdukeR
    current bikes
    2010 KTM 990 Supermoto
    2014 MV Agusta Rivale 800
    2007 Yamaha FZ6 Cup Race Bike

  3. #33
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Hi guys, quick update. Decided to get this bike registered so I can get some more use out of it. Also installed a pc3 quick shift sensor which is working very nicely. The bike goes pretty well now but like any 600 you have to keep it in the right rev range...which on this is 8000-14000. Still experimenting with gear ratios. I started off with my short circuit gearing 14/46 but it was too short for the highway and the fast back roads i frequent. I changed to the long circuit gearing 16/48 and road it this way for the first time today. While it generally feels much better all round with this gearing, it's definitely lost a bit of zing in 2nd gear out of the slower corners. Still lifts up the front wheel in first gear under power and will stay in the air through 2nd and 3rd using the quick shifter. It does feel a little on the tall side though, I may look into going up 1 more tooth on the rear 16/49. I'll get a video up for you guys soon. Will have to dust of the old gopro....Oh and i still need to re-fit my belly pan. I haven't seen it on the bike yet with all the road gear.









    I JET

    1991 Yamaha 50
    1989 Yamaha 80
    1989 Honda XR80
    1988 Honda XR100
    1993 Honda XR250
    1997 Honda XR400
    2007 KTM 450 EXC
    1994 Honda RVF 400
    2010 BMW S1000RR
    2010 Triumph 1050 Speed Triple
    2012 BMW S1000RR
    2013 KTM 1190 Adventure
    2014 KTM 1290 SuperdukeR
    current bikes
    2010 KTM 990 Supermoto
    2014 MV Agusta Rivale 800
    2007 Yamaha FZ6 Cup Race Bike

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  5. #34
    the milkman
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    Re: R6 Cams, Head gasket, headers, here we go

    If you’re gonna do any custom head work, the intake passage actually benefits from a controlled rough surface. Fuel tends to condensate on smooth surfaces, so uniform pitting or surface texture allows the air/fuel mixture to better atomize and have smoother, swirling flow rather than turbulent unorganized flow . Some people say that smoothing the exhaust passage will allow for better flow, however, if you look at aircraft wing aluminum, it’s not shiny smooth. The surface texture causes the air to swirl in a more uniformed fashion. On cars, people have been enlarging intake and exhaust ports for years for better flow, but if you look at moto gp ports, the passages have actually gotten smaller, this, im assuming allows for better torque and Venturi effect, thus increasing the speed of the air coming in?? Head work on modern 4 bangers is finicky. Any metal taken off should be sent out to a professional machine shop with years of experience and a flowbench. The problem is that flow benches use a constant air velocity compared to the variable volicity of a gasoline engine. This can make it hard to pin point where the power gains will be in the rpm range.

  6. #35
    2 Da Street, Knobs R Gone FinalImpact's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    Quote Originally Posted by I JET View Post
    Well, the cams are in, degreed, clearances set, its back together and running and it sounds great, purrs like a kitten. I set the manual tensioner by measuring the wear mark on the stock hydraulic tensioner...it sounds better then before, no chain rattle, no overtightened wurring noises...just spot on.

    One website i used alot to wrap my head around cam degreeing was this one:
    Cam Degreeing

    For those interested, these are the measurements taken with the R6 cams installed using the R6 cam gears, set to the standard timing marks. (Before degreeing)

    All measurements taken at 1mm lift.

    Intake Valve open = 16 BTDC
    Intake Valve closed = 52 ABDC
    (52 - 16) + 180 / 2 =
    108 ILC

    Exhaust valve open = 44 BBDC
    Exhaust valve close = 15 ATDC
    (44 - 15) + 180 / 2 =
    104.5 ELC

    A bit off what I was expecting but it also makes sense why a member on here had a massive dead spot between 6-7k rpm after doing the cam swap using standard marks and not degreeing. As a reference i used the following link for the 2004 R6 engine specs. Going off this info the standard R6 cam timing is 105 ILC / 106 ELC.
    Specifications: 2004 Yamaha YZF-R6

    I confirmed this with my tuner. After discussions he suggested the best numbers for cam timing is 105/105. This in his opinion gave the best performance across the rev range for the 03-05 r6 engine. And basically it was up to me If I wanted to try anything different. So taking his advice I set the cams to 105/105. I'll experiment a little in the future but for now i want the thing running and tuned.

    So the process of elongating the cam gear mounting holes was quick and easy. I used a dremel with a small stone bit and checked the amount removed using digital verniers as I was going.

    Honestly the hardest part was accurately setting the dial indicator on the valve bucket. It took quite a while to get that right and reading consistent numbers.

    So.....pretty happy with how well it starts, runs and sounds. Gonna give myself a rest this week. Next week I'll remove the side cover again and perform the ignition timing advance mod. Thanks Final impact.







    Refresh me - did you say that you matched the port to the TB adapter to remove the material shown here?
    08 Raven w/a few mods...
    R6 Forks, R1 Rear Shock (revalved), 6 Ignition Advance, S1 CAT free Header, SS Mid-Pipe, 2Bro Exhaust, AIS block off plates, Bazzaz Z-Fi Fuel Controller & Z-AFM Data Logger, Air Box mod, CR10E Plugs, 48-Tooth Rear Sprocket, FZ1 Bars, Spider Grips, Adj levers, Powder Coated -Triple, Bars & Rear Sets, Solid mounted rear-sets w/knurled pegs, Dual Headlight, Tail Tidy, LED Combo Brake & Directionals, LED POD lights & Tinted PUIG Wind Screen!

  7. #36
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Hi Randy,

    No port matching or smoothing was done on intake or exhaust. I had all intentions of spending some time on this but at the time I had everything pulled apart it was decided to get the engine back together and prove the R6 cams would be successful. I'm very happy with the numbers the bike made. I've done around 1200 kms with this set up now. Its a real screamer of a little bike, I have no problem keeping up with 1000cc bikes now even in the faster flowing corners, but you do have to keep it up in the high revs for sure. I'm now looking into aftermarket screen options because the wind blast at high speeds is quite tiresome.
    I JET

    1991 Yamaha 50
    1989 Yamaha 80
    1989 Honda XR80
    1988 Honda XR100
    1993 Honda XR250
    1997 Honda XR400
    2007 KTM 450 EXC
    1994 Honda RVF 400
    2010 BMW S1000RR
    2010 Triumph 1050 Speed Triple
    2012 BMW S1000RR
    2013 KTM 1190 Adventure
    2014 KTM 1290 SuperdukeR
    current bikes
    2010 KTM 990 Supermoto
    2014 MV Agusta Rivale 800
    2007 Yamaha FZ6 Cup Race Bike

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  9. #37
    2 Da Street, Knobs R Gone FinalImpact's Avatar
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    Red face Re: R6 Cams, Head gasket, headers, here we go

    Thanks for the update!
    Its tempting to do it. Sadly I know the ecu and ignition map is killing more than we know.

    That said the compression bump and cams can't hurt.
    So how does it pull from a stop? You feel any flat spot now?

    I love the 3rd gear pull it has now. It just sings.
    I should dyno and do the cams, gasket, and port match just for fun!

    Be safe man....
    08 Raven w/a few mods...
    R6 Forks, R1 Rear Shock (revalved), 6 Ignition Advance, S1 CAT free Header, SS Mid-Pipe, 2Bro Exhaust, AIS block off plates, Bazzaz Z-Fi Fuel Controller & Z-AFM Data Logger, Air Box mod, CR10E Plugs, 48-Tooth Rear Sprocket, FZ1 Bars, Spider Grips, Adj levers, Powder Coated -Triple, Bars & Rear Sets, Solid mounted rear-sets w/knurled pegs, Dual Headlight, Tail Tidy, LED Combo Brake & Directionals, LED POD lights & Tinted PUIG Wind Screen!

  10. #38
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Hi Randy, it pulls really hard from a stand still, no flat spot at all. The tuner did a great job to smooth everything out, the off on throttle transition is really nice. I'm so glad I did the cam swap, it's like riding a street fighter R6. It really screams.
    I JET

    1991 Yamaha 50
    1989 Yamaha 80
    1989 Honda XR80
    1988 Honda XR100
    1993 Honda XR250
    1997 Honda XR400
    2007 KTM 450 EXC
    1994 Honda RVF 400
    2010 BMW S1000RR
    2010 Triumph 1050 Speed Triple
    2012 BMW S1000RR
    2013 KTM 1190 Adventure
    2014 KTM 1290 SuperdukeR
    current bikes
    2010 KTM 990 Supermoto
    2014 MV Agusta Rivale 800
    2007 Yamaha FZ6 Cup Race Bike

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  12. #39
    2 Da Street, Knobs R Gone FinalImpact's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    I'm happy someone put all the pieces together, cams, compression, timing (although barbaric compared to ideal) & [no shame intended there btw], fueling, exhaust, suspension.... Good Job!
    Pretty, responsive, nimble flickable little bikes!

    Any chance you've thrown it on the scales to weigh it as is???

    You know there is a lad in area who has remapped his fz6r correcting the ignition map. I may reach out and see if he's still tinkering. I'll let you know as fixing this will remove the oem imposed limits allowing 1st and 2nd gear to throw you right on your lid!
    On that note - Be safe!
    08 Raven w/a few mods...
    R6 Forks, R1 Rear Shock (revalved), 6 Ignition Advance, S1 CAT free Header, SS Mid-Pipe, 2Bro Exhaust, AIS block off plates, Bazzaz Z-Fi Fuel Controller & Z-AFM Data Logger, Air Box mod, CR10E Plugs, 48-Tooth Rear Sprocket, FZ1 Bars, Spider Grips, Adj levers, Powder Coated -Triple, Bars & Rear Sets, Solid mounted rear-sets w/knurled pegs, Dual Headlight, Tail Tidy, LED Combo Brake & Directionals, LED POD lights & Tinted PUIG Wind Screen!

  13. #40
    I JET (OP)
    Senior Member I JET's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    I've never weighed this bike, really interested to know where it's at though. It must be heavily front end bias now since going to the side exit R6 exhaust and the addition of the headlight, horn ect. I'm still running the 1 piece fiberglass race tail, in compassion to the stock seat and tail unit is super duper light weight. I've been meaning to buy a set of mechanical bathroom scales to keep in the garage. I will do that and get back to you. I'm keen to weigh my other bikes as well.

    Mate that would be awesome if we could get around the factory timing retard in the lower gears. It's already a little screamer, that would be the icing on the cake for sure.
    I JET

    1991 Yamaha 50
    1989 Yamaha 80
    1989 Honda XR80
    1988 Honda XR100
    1993 Honda XR250
    1997 Honda XR400
    2007 KTM 450 EXC
    1994 Honda RVF 400
    2010 BMW S1000RR
    2010 Triumph 1050 Speed Triple
    2012 BMW S1000RR
    2013 KTM 1190 Adventure
    2014 KTM 1290 SuperdukeR
    current bikes
    2010 KTM 990 Supermoto
    2014 MV Agusta Rivale 800
    2007 Yamaha FZ6 Cup Race Bike

 

 
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