Offsetting the trigger wheel offset everything... timing and injectors. Unless you told the ECU you moved the trigger wheel LOL
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Timing change....Do it!
- Thread starter sti491
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Offsetting the trigger wheel offset everything... timing and injectors. Unless you told the ECU you moved the trigger wheel LOL
- Thread starter
- #42
sti491
Member
Alright Martin, this deserves more in depth dialog... Let's see if I know what I think I know, or you can school me some more... which you have been very generous doing already!
I'm thinking you are referring to my comment about feeling the timing change more in 3rd, compared to 1st & 2nd(?)... or is it mileage? Let me know what you think of this reasoning:
The two timing guys , Rumpeg and Final Impact I think they were that I relied on as well as you, mentioned the ECU retards the spark in first & second, no matter where you advance the trigger wheel. I thought I still felt it in 1st & 2nd, but opposite from front sprocket that affects all gears, that change seemed to pack the biggest wallop in 1st & 2nd because of the more pronounced wheelie inclination now compared to before. I thought I felt the timing change more in 3rd, or was that psychologically induced because of what I read? The ol' butt dyno can be fooled sometimes!
You really got me thinking about, " the trigger wheel offsets injectors". I did not think this was the case. I thought the trigger change I made was akin to turning the distributor on an old school carbureted car: advance the base timing a bit by twisting it clockwise, idle increases, to a point you get a bit more power, past that pinging. The fuel being metered by the carburetor doesn't change, the spark just happens a fraction earlier for more complete combustion, hence a tad better performance (to a point) and slightly better mileage.
Really old school mechanical distributor motors I remember back when I as teenager, didn't even have any type of advance for higher RPM's other than centrifugal weights with springs that required changing sometimes, or stiffer/looser depending the performance you wanted. But none of this affected fuel delivery, just spark timing.
How does advancing the trigger wheel on the FZ6R change the injector timing? I'm confused on the advantage if the injectors and timing both change at the same time, earlier spark & fuel in the compression stroke = bigger bang??? As opposed to earlier spark same fuel more complete burn? My head is starting to hurt. I need enlightening on this please!
The ECU used the trigger wheel (crank position sensor) to know when to spark and inject fuel, not like the good old carbs day where you only worry about a distributor to adjust spark timing. The spark advance here is what really counts. The injectors are open about 75% of the time at max load at 12K RPM so +/- 2 or 3 degree won't be a big deal. If there was an ECU flash for the FZ6R it wound be so much better but for a $0.00 mod the return on investment is really good LOL
- Thread starter
- #44
sti491
Member
Interesting, Thanks!
Ever hear of this company? https://ecunleashed.com/product/2010-yamaha-fz6-r-2/
Not cheap. Wonder how well they do changing fuel & ignition? Being already invested in an PC5 and happy with Adv Gear Rev B map, doesn't seem practical for me(?) Wonder what the deal is with this, few seem to be doing it and talking about it?
Ever hear of this company? https://ecunleashed.com/product/2010-yamaha-fz6-r-2/
Not cheap. Wonder how well they do changing fuel & ignition? Being already invested in an PC5 and happy with Adv Gear Rev B map, doesn't seem practical for me(?) Wonder what the deal is with this, few seem to be doing it and talking about it?
Yes, those guys are legit! They did some great flash work on the FZ09. Dynojet has a timing devise also, like the PCV. But the end results would be about the same of what you just did
- Thread starter
- #46
sti491
Member
Cool, thx.
San_Holo
New Member
Hey, bought a 4degree timing wheel for my bike of of ebay, and i have now dynoed it. it made 71.1 whp and 50,5nm of tourqe, vs stock 61,2whp (before 4 degree timing wheel). i only have an exhaust, no juice box or anything. This is an easy 10whp gain, i higly reccomend it. Doing larger intake (of of the FZ6, 32mm to 36mm) and ecu tuning next 
Link to the 4 degree timing wheel, https://www.ebay.com/itm/153461413061?ViewItem=&item=153461413061
Link to the 4 degree timing wheel, https://www.ebay.com/itm/153461413061?ViewItem=&item=153461413061nakedfz6r251
Member
You’re making me wanna do the timing mod now...
San_Holo
New Member
Do it, but you probably need to make a 2 pin tool to get it loose, there is agreat tutorial on yt, serch something like fz6r timing. But do not use locktite,good luck
My dyno run :
mjv21
New Member
Did you just buy this or did you do everything with the micrometer as well?Hey, bought a 4degree timing wheel for my bike of of ebay, and i have now dynoed it. it made 71.1 whp and 50,5nm of tourqe, vs stock 61,2whp (before 4 degree timing wheel). i only have an exhaust, no juice box or anything. This is an easy 10whp gain, i higly reccomend it. Doing larger intake (of of the FZ6, 32mm to 36mm) and ecu tuning next
Half-Click Up
Active Member
Hey my understanding is that the 4 degree wheel from the FZ6 is ONLY safe for use on the FZ6R if you have the FZ6 cam swap completed... am I missing something here???
mjv21
New Member
Um....I'd also like to understand this.
Rumpig
Member
You don't need to do the cam swap to do the timing mod.
San_Holo
New Member
i bought it, its premade to be the Correct timing offset
Albert Chin
New Member
Hi All,
At first, many thanks to Marthy for the advice and tips he provided.
Ive done mine with 0.029" shave.
This really does improves the overall performance of my bike.
Throttle response greatly improved from 1st to 6th gear. It really pulls.
The best part is the fact that Im the first person to have done this mod among the Yamaha XJ6 Diversion Community in Malaysia.
At first, many thanks to Marthy for the advice and tips he provided.
Ive done mine with 0.029" shave.
This really does improves the overall performance of my bike.
Throttle response greatly improved from 1st to 6th gear. It really pulls.
The best part is the fact that Im the first person to have done this mod among the Yamaha XJ6 Diversion Community in Malaysia.
Albert Chin
New Member
Hi mate,Hey, bought a 4degree timing wheel for my bike of of ebay, and i have now dynoed it. it made 71.1 whp and 50,5nm of tourqe, vs stock 61,2whp (before 4 degree timing wheel). i only have an exhaust, no juice box or anything. This is an easy 10whp gain, i higly reccomend it. Doing larger intake (of of the FZ6, 32mm to 36mm) and ecu tuning next
Did you experience any engine knocking the moment you install the 4 degree timing wheel?
What about the thickness of the key way of the timing wheel?
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tdnathens
Member
I just received my 4 degree advanced timing rotor. I purchased it off e-bay from .c.c.d.f.motorcycleproducts. These people make advanced degree rotors for many kinds of bikes. I ordered on Sat Aug 7, shipped Mon Aug 9, received Mon Aug 23. Not bad for mail from England. Total cost with tracked shipping $60.00. Looks like a well made machined piece. It is marked as being a 4 degree rotor. Ordered a new cover gasket from my local dealer. Don't know when I will install it.
Tom
Tom
Half-Click Up
Active Member
I'll be most curious to hear of your results. I'll state it again: my understanding is that 4 degrees of timing advance is appropriate for the FZ6. A timing advance of 3 degrees is the max you want to safely run on the FZ6R.
I can certainly be wrong, but not one person running a 4 degree advance on the FZ6R has chimed in to say they've safely operated for any length of time.
Rumpig
Member
Half-Click Up
Active Member
Dang, excellent data!! Well since I've got your attention, what about the 4 degree advance with respect to geographical location and temperature? I ask because I'm in central Texas, and even running 93 octane, I can't help but wonder if heat indices of 104+ would spell disaster?