fz6 engine to r6

[the_engineer]

I am pretty new to riding let alone having a bike that is meant only for the street. But during my research on the fz6, which I now own a 2007 green fz6, it states that it has a detuned r6 engine. is there a way to tune the engine to be like the r6 or is there more involved such as changing cams, bore and stroke, etc.

Thank you for helping a newbie out!!!:thumbup:

 

[Motogiro]

I don't think there is much difference than the cams and the ECU mapping. I believe the cams are directly swappable sans the sensor assembly that would be in the R6 valve cover. There is a sensor on the R6 engine that sends a signal to the R6 ECU so I imagine there maybe some harness difference.

 

[I JET]

From the info I have looked at, the main differences between the two engines / bikes is --> cams, throttle bodies, fuel injection system (wiring, ecu) , airbox, exhaust, ignition system. Their are other differences but they are the main ones.

Some light reading for you

R6 engine into FZ6
http://www.600riders.com/forum/fz6-performance-mods-section/50261-05-r6-motor-swap-into-my-06-fz6-progress.html

Camshaft profile, anyone know the specs???
http://www.600riders.com/forum/fz6-technical/36860-camshaft-profile-anyone-know-specs.html

Final Imppact Winter project; playing w/trigger
http://www.600riders.com/forum/fz6-performance-mods-section/50869-final-imppact-winter-project-playing-w-trigger.html

R6 Cams
http://www.600riders.com/forum/fz6-performance-mods-section/51251-r6-cams.html

r6 headers on fz6
R6 Headers on FZ6? - Sportbikes.net

 

[BatmanFZ6]

The R6 is mostly top end power. If you have an 2007 S2 it should be pretty good on bottom end torque.

FZ6 Specs:
Yamaha FZ6 - Wikipedia, the free encyclopedia

R6 Specs:
Yamaha YZF-R6 - Wikipedia, the free encyclopedia

 

[Cortez]

The R6 is mostly top end power. If you have an 2007 S2 it should be pretty good on bottom end torque.

I have the S2 and have tried the older version too (didn't notice a difference).
Honestly, it's low end torque is worse then on a Hornet 600 (Honda 599) or a
Bandit 650. People who tried the GSR600 from Suzuki also say it's got better
low end then the FZ6.

Then again, back in 2007 or when was the R6 redesign, it too had the worst
low end out of all 600cc RR bikes.

Not that it's a bad thing or anything, but it's good to be aware of it since
someone might like other bikes from this category better.

I'd swap mine for a Bandit 650 but they have worse brakes and suspension,
and that stuff is more important to me.

 

[iviyth0s]

I have the S2 and have tried the older version too (didn't notice a difference).
Honestly, it's low end torque is worse then on a Hornet 600 (Honda 599) or a
Bandit 650. People who tried the GSR600 from Suzuki also say it's got better
low end then the FZ6.

Then again, back in 2007 or when was the R6 redesign, it too had the worst
low end out of all 600cc RR bikes.

Not that it's a bad thing or anything, but it's good to be aware of it since
someone might like other bikes from this category better.

I'd swap mine for a Bandit 650 but they have worse brakes and suspension,
and that stuff is more important to me.

Would the sprocket setup make the difference? An FZ6 with a -1 on the front should have better acceleration than its R6 counterpart at least.

 

[Cortez]

Would the sprocket setup make the difference? An FZ6 with a -1 on the front should have better acceleration than its R6 counterpart at least.

Up to a certain point, for sure, but don't forget that the R6 has at least 20hp
more and is lighter.

I've got +1 on mine and it really affected the acceleration in first gear, a lot
more then on my last bike (kawasaki ninja 650R, a twin), feels like I lost 10hp.

 

[Carlos840]

Would the sprocket setup make the difference? An FZ6 with a -1 on the front should have better acceleration than its R6 counterpart at least.

Going -1 in front opens up a whole lot of fun!

It really makes the bike a lot more responsive, it feels like it just stays in the higher revs a lot easier.
Since doing it i never end up bogged down anymore.
Also, it won't affect your top speed, the FZ6 is limited by it's lack of power and aerodynamics, not by gearing.

One thing to keep in mind is that you will need a speedo healer to correct the tach and odometer if you go -1 in front.

 

[Cortez]

Going -1 in front opens up a whole lot of fun!

It really makes the bike a lot more responsive, it feels like it just stays in the higher revs a lot easier.
Since doing it i never end up bogged down anymore.
Also, it won't affect your top speed, the FZ6 is limited by it's lack of power and aerodynamics, not by gearing.

One thing to keep in mind is that you will need a speedo healer to correct the tach and odometer if you go -1 in front.

Since I went +1 I've seen some hills that the bike won't climb at more then
85mph in 6th gear and once in a headwind it stopped accelerating at 100mph,
again in 6th, which is almost an overdrive (I believe it's 1:1.03 with +1).

However, mine is naked, so..

Shifting down to 5th in those situations takes care of things easily.
I'd still like to have a 7th gear though.

 

[FinalImpact]

Up to a certain point, for sure, but don't forget that the R6 has at least 20hp
more and is lighter.

I've got +1 on mine and it really affected the acceleration in first gear, a lot
more then on my last bike (kawasaki ninja 650R, a twin), feels like I lost 10hp.

I think you're first one I've even seen to state this, "feels like I lost 10hp." Most folks say it has no impact which I have a hard time believing.

R6 -
The gear box ratios are different and depending on the year, they have an extra injector too. The late model is drastically different in too many ways to list...

IIRC the exhaust cam is near identical but the intake has different lobe centers and more lift, but not enough to change the valve springs.

The biggest benefit we could jack from the R would be the ECU and trigger wheel so we could ditch the group fire plugs and injectors. Theirs are more efficient but then you need to fuel pump and cams too! What do you gain? A more progressive ignition advance curve and better fuel delivery.
Sadly, even with the valve cover (it takes the same gasket as ours), cams, the COPs will fit but you'd have to drop the engine several inches to do a spark plug change.

Just to get the ECM in place:
Cams - cause we need the trigger
Camshaft position sensor
Valve cover - mounts the extra cam position sensor
Wiring harness
Ignition pickup and Trigger wheel
4X COP
Fuel Pump
Throttle bodies and intake
ECU
Gauge

But now the ECU is confused because the individual gears (1-6) all have different ratios. Why is this a problem; because the ECU uses the crank trigger AND the output shaft rotation per second to calculate fuel and ignition advance. Its how it knows what gear its in and "What to do". So the computer would be confused with the ratios so you'd likely need an external Fuel and ignition management to fix it.
I'm not 100% that this is a show stopper engine management wise, more so - something to consider. Hell, it may be happy and be better?!?

Its really far more complex than it looks Easier to take the whole bike or the engine and everything else needed.
- However, I am really wanting to get rid of the 1 ignition coil per 2 cylinders and run 4 individual Coil Over Plug Ignition Coils.

 

[Cortez]

I think you're first one I've even seen to state this, "feels like I lost 10hp." Most folks say it has no impact which I have a hard time believing.

Opening up the throttle from idle in 1st lead to a wheelie that started around
8000-9000 revs usually. With +1, there's no wheelie at all.

The difference becomes unnoticeable once you get over 60mph since you can
always use a gear less then you used to, but because the 1st gear is so tall,
you can really feel it there. I could feel it on my 650R which could do only 40mph
in 1st gear (and not 60mph+ like FZ6) and had a LOT more torque down low, but
it wasn't as dramatic as this.

 

[yamihoe]

Opening up the throttle from idle in 1st lead to a wheelie that started around
8000-9000 revs usually. With +1, there's no wheelie at all.

The difference becomes unnoticeable once you get over 60mph since you can
always use a gear less then you used to, but because the 1st gear is so tall,
you can really feel it there. I could feel it on my 650R which could do only 40mph
in 1st gear (and not 60mph+ like FZ6) and had a LOT more torque down low, but
it wasn't as dramatic as this.

I went +1 and I can still powerwheelie in 1st, jump up a few inches when grabbing 2nd and get head shake when grabbing 3rd....sooo it does put a damper on initial jump, but to say that you lost 10hp is just as much nonsense as saying that it cant wheelie at all.

 

[Cortez]

I went +1 and I can still powerwheelie in 1st, jump up a few inches when grabbing 2nd and get head shake when grabbing 3rd....sooo it does put a damper on initial jump, but to say that you lost 10hp is just as much nonsense as saying that it cant wheelie at all.

I never said the bike can't wheelie anymore, it just
needs a tug on the bars and me sitting back as far
as possible. It still jumps when letting the clutch out
in second but I never said it didn't.

And I didn't say I lost 10hp, I'm sure all 98 are still there.
Never said that the bike can't wheelie at all either.

English isn't my first language but you could use a
lesson in understanding what you read.

I described one specific situation - accelerating in 1st
from idle. That's all. Also, I'm sure if I had 100lbs less
then I do now, the bike would still probably lift up in
1st and 2nd gear.

 

[ctbandit]

The R6 is mostly top end power. If you have an 2007 S2 it should be pretty good on bottom end torque.

FZ6 Specs:
Yamaha FZ6 - Wikipedia, the free encyclopedia

R6 Specs:
Yamaha YZF-R6 - Wikipedia, the free encyclopedia

Roflcopter... fz6 & bottom end torque in the same sentence..

 

[Cortez]

Roflcopter... fz6 & bottom end torque in the same sentence..

Compared to the 2007 R6 it's a beast down low.

 

[BatmanFZ6]

Roflcopter... fz6 & bottom end torque in the same sentence..

I ride with a guy who has an 05 R6 and will pull away off the line and through the curves but if he gets in a straight away he blows by me once we get around 4th. I also did a pretty good job keeping up with him when we just rolled on the throttle. The difference there was I was topped out and he was still in 5th.

 

[Cortez]

I ride with a guy who has an 05 R6 and will pull away off the line and through the curves but if he gets in a straight away he blows by me once we get around 4th. I also did a pretty good job keeping up with him when we just rolled on the throttle. The difference there was I was topped out and he was still in 5th.

Yep, that's pretty much how it felt to me riding one after the other, but if
I remember correctly the R6 had a taller 1st gear too which made even worse.

Torque and power peaks out some 1500 or so revs above fz6 numbers too.
Still a great engine.

People usually don't believe me but I used to run away like that on my Kawi
Ninja 650R (er6f) from my buddy on the ZX-6R (2004 636). My bike had 72hp,
his had 125hp and was even lighter, but my 1st gear went up to 40mph,
and his went up to over 60mph and my bike had instant torque down low
and his had a lot less. From stoplight to stoplight if we didn't get over 45mph,
I'd be faster every time and had less trouble launching fast.

But it's good night after that
The 636 hit 120mph in 9,x seconds, and the 650R took over 20.