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  1. #11
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Pretty sure it's the thermostat housing, I'll have a closer look today.

    Will measure the valve to piston clearance at tdc using a dial indicator then do the math using the cam specs. I won't be going mad with the cam timing.

    I was pleasantly surprised with the condition of the cylinder bores. This has been a race bike since new so basically ridden flat out it's whole life.
    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

  2. Thanks TownsendsFJR1300, FinalImpact thanked for this post
  3. #12
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go







    R6 Cams went in, torqued down, timing chain on, everything lined up perfectly, turned over nicely, checked valve clearances, all but 2 are within spec, will need to get shims during the week before I go any further. Another delay but I'd rather take my time with it, till next weekend. Tried out the manual cam tensioner, so far so good, made it super easy to get everything back together and lined up.

    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

  4. #13
    2007 FZ6 TownsendsFJR1300's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    Quote Originally Posted by I JET View Post
    Pretty sure it's the thermostat housing, I'll have a closer look today.

    Will measure the valve to piston clearance at tdc using a dial indicator then do the math using the cam specs. I won't be going mad with the cam timing.

    I was pleasantly surprised with the condition of the cylinder bores. This has been a race bike since new so basically ridden flat out it's whole life.
    Yes it is, didn't see the hose hook up.

    Yamaha Motorcycle Parts 2007 FZ6 - FZS6W RADIATOR HOSE Diagram

  5. #14
    2 Da Street, Knobs R Gone FinalImpact's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    Proof that RPM and Velocity do an engine good keeping it clean....

    What are the yec cam options +/-4?? IDR....

    As for valve to piston clearance, had it been checked before tear down, you would know the safe place.
    Now you have the same numbers minus head gasket thickness...

    Just put it on TDC, zero a dial indicator on the intake for example and press the valve down until it hits the piston.
    The cams can be OUT for this too.
    Now you have your clearance.

    As for running R6 specs; IIRC they are tighter. This is good as valve timing will be more precise.

    Its kinda late now, but any chance you put a degree wheel on the crank for stock cam timing?

    Let us know what your options are with R6 yec spec parts.
    If dialed to 102/105 and ignition advanced, you should be happy. Oh - any port clean up?
    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!

  6. #15
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Yec manual states adjustable from -2 to +6. It's also states to slot the holes to make them adjustable, which could be done on the stock gears also.

    I didn't bother measuring before the tear down, I'm more concerned with the final result, will defenately measure before i go moving the cams.

    You're correct the r6 clearances are tighter, but 2 valves were still way too tight, the rest were all within spec, inlet all near the tighter end, exhaust all near the higher end, similar as with the fz6 cams.

    also I didn't degree check the fz6 cams, again more focused on the r6 cams.

    I did dress up the intake ports near the transition from the throttle body, there was a slight misalignment and also some very minor casting ridges running down the side of each port. Exhaust ports looked pretty good.

    Degreeging cams is all new to me, first time I've dabbled with it. I've parked it until next weekend for now, I need to swap some shims anyway before I proceed. I appreciate your input @FinalImpact and also @Marthy, I've been reading over alot of his posts regarding cam timing.
    You believe 102/105 will be a good starting point, any idea what the 2003-2005 r6 standard cam spec is? ILC / ELC. Working off some specs online I can see 105/106 but unsure if thats at all accurate.
    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

  7. Likes FinalImpact liked this post
  8. #16
    2 Da Street, Knobs R Gone FinalImpact's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    The numbers you seek are likely not the same for everyone as flow is a huge factor. But I'd say start there.

    I.e. degree wheel on crank, dial indicator on piston top, determine EXACT TDC and zero your wheel. Now with D/I on the intake determine when it opens and when its closed. Many use the 1mm number for off the seat reference. Whatever you use, it doesnt matter as you still get the same lobe center. That said, using the number the cam is spec'd with will give you the correct duration value matching the cam.

    Old school American V8 we used recored events as lift at 0.050"...

    Once you dial these in and advance the ignition, get the fueling dialed it should rocket from 6k on up.
    Looking forward to final grin factor!
    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!

  9. #17
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    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.







    Last edited by I JET; 10-29-2017 at 05:04 AM.
    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

  10. #18
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go



    Last edited by I JET; 10-29-2017 at 05:08 AM.
    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

  11. Thanks FinalImpact thanked for this post
  12. #19
    Junior Member fazil's Avatar
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    Re: R6 Cams, Head gasket, headers, here we go

    Looks great, how is your first impressions?

  13. #20
    I JET (OP)
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    Re: R6 Cams, Head gasket, headers, here we go

    Well, I'm pretty happy so far although I've only been able to start it and let it run to check things over... I haven't ridden it yet. It has no registration and full race slicks which are very old and hard.
    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

  14. Thanks FinalImpact thanked for this post
 

 
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