660 Motor, finally running :)
Moderators: Site Director, FZR Forum Moderators
Re: 660 Motor, finally running :)
Short would not mean that you need a spacer plate, short would be a concern about pistons hitting crank. Thus possibly needing custom pistons.
Re: 660 Motor, finally running :)
YZF rods are 3mm longer than 3HEs or FZS so you need the spacerplate and adjustable camshaft gears
i think the FZS 600 was only avaible in europe cause i didnt found the microfiches on the US Yamaha website
i think the FZS 600 was only avaible in europe cause i didnt found the microfiches on the US Yamaha website
Re: 660 Motor, finally running :)
Why would the YZF rods be longer even though the crank throw of the FZR is longer. Strange. They must have offset the piston wrist slots on the pistons differently then.
-
shredex
- 2000+ Posts
- Posts: 2768
- Joined: Sun Sep 07, 2008 10:40 am
- Location: Holiday, Florida
- Contact:
Re: 660 Motor, finally running :)
have you ridden the thing to test power yet?
id like to find out how much gain you get.
and if it pulls up in 2nd
id like to find out how much gain you get.
and if it pulls up in 2nd
Re: 660 Motor, finally running :)
thats because the lift of the crankshaft in the YZF motors is lower than FZR but the crankshaft is in the same position and the cylinders have the same (outside) dimensions as the 3HEs, so if you had rods in there with the lengh (or shortness) of FZR rods you would have a gap of 3mm between highest point of piston and cylinderheadnynoah wrote:Why would the YZF rods be longer even though the crank throw of the FZR is longer. Strange. They must have offset the piston wrist slots on the pistons differently then.
will take some weeks till i can do something on the bike again because the garage is at my parents home and im 500km's away for studying
Re: 660 Motor, finally running :)
Nice build it's good to see a few of the motors getting built. What jetting are you currently running?
I read that the carbs are smaller in diameter on the fzs, that's why they produce 5hp less than the yzf600. Is there any internal difference between the yzf600 and the fzs, as i believe that the fzs also has a slightly lower compression ratio? is the head volume the same cc's?
There is also one disadvantage to shorter rods, in that longer rods hold the piston closer to tdc for longer.
I read that the carbs are smaller in diameter on the fzs, that's why they produce 5hp less than the yzf600. Is there any internal difference between the yzf600 and the fzs, as i believe that the fzs also has a slightly lower compression ratio? is the head volume the same cc's?
There is also one disadvantage to shorter rods, in that longer rods hold the piston closer to tdc for longer.
fzr660/400: fzr400 3en1 frame, 3en2 swinger, custom single seat subframe, fzr660 motor conversion, APE adjustable cam gears, full D&D 4-2-1 exhaust, falicon clutch basket, ignitech ignition, R6 front end with tz250 wheel, ohlins shock, storz steering damper, tzr250 rear wheel.
weighs 166kg wet (25kg lighter than my stock fzr600).
weighs 166kg wet (25kg lighter than my stock fzr600).
Re: 660 Motor, finally running :)
i run the YZF carbs with original jetting at the moment
i dont know the things you asked about the FZS, the FZS motor i got had no head on it, the only things i can tell is that the crankcase is different, the cylinders are about 2cm shorter, rods are shorter, the rest is pretty much the same or just "improved"
i dont know the things you asked about the FZS, the FZS motor i got had no head on it, the only things i can tell is that the crankcase is different, the cylinders are about 2cm shorter, rods are shorter, the rest is pretty much the same or just "improved"
-
shredex
- 2000+ Posts
- Posts: 2768
- Joined: Sun Sep 07, 2008 10:40 am
- Location: Holiday, Florida
- Contact:
Re: 660 Motor, finally running :)
im so confused.
how do you not need a spacerplate?
where are you getting the extra displacement from?
i dont get how just using the fzs rods gives you the ability to not need a spacer plate....
seems like you just built a custom 600cc motor to me.
or do you not need a spacer plate when using the yzf crank?
poopy.
how do you not need a spacerplate?
where are you getting the extra displacement from?
i dont get how just using the fzs rods gives you the ability to not need a spacer plate....
seems like you just built a custom 600cc motor to me.
or do you not need a spacer plate when using the yzf crank?
poopy.
Re: 660 Motor, finally running :)
Shred,
The YZF rods are longer than the FZR ones. Combine that with the longer stroke of the FZR crank and the piston will hit the valves which is why you need the spacer. Additionally, you can't use the FZR rods as the top bore of the rod where the wrist pin goes is the wrong size and will not accept the YZF piston correctly.
The FZS rods are the same length as the FZR ones which means you don't need the spacer. Plus the top bore for the wrist pin is the correct size to take the YZF pistons.
The YZF rods are longer than the FZR ones. Combine that with the longer stroke of the FZR crank and the piston will hit the valves which is why you need the spacer. Additionally, you can't use the FZR rods as the top bore of the rod where the wrist pin goes is the wrong size and will not accept the YZF piston correctly.
The FZS rods are the same length as the FZR ones which means you don't need the spacer. Plus the top bore for the wrist pin is the correct size to take the YZF pistons.
Yes, that is a Single Sided Swingarm FZR600 that I built.
Something is lurking, waiting, wanting to be built......It calls to me from the darkness....
I can finally see the light at the end of the tunnel....Then I realize that it is the train coming to run my ass over....
Something is lurking, waiting, wanting to be built......It calls to me from the darkness....
I can finally see the light at the end of the tunnel....Then I realize that it is the train coming to run my ass over....
Re: 660 Motor, finally running :)
that pretty frickin awesome
93 Yamaha FZR 600 - Track Project
-in NOT AS MANY pieces for track, beater prep
SOLD
88 FZR1000, 90 FZR 1040, 03 Suzuki SV1000S, 06 R6 50th Anniversary
-in NOT AS MANY pieces for track, beater prep
SOLD
88 FZR1000, 90 FZR 1040, 03 Suzuki SV1000S, 06 R6 50th Anniversary
-
ruffryderMel
- Site Newbie
- Posts: 3
- Joined: Sat May 17, 2008 2:30 pm
- Location: Ft. Lauderdale, Fl
- Contact:
Re: 660 Motor, finally running :)
do you have any more info to share on this mod? I never even heard of a FZS? can anyone point me in the right direction to find some rods or info?
Re: 660 Motor, finally running :)
That model bike is only available in Europe. It is also a specific year range that uses those rods. Finding them is a little difficult. There is a lot of info on the 660 engine. Do a search here or on the other site.ruffryderMel wrote:do you have any more info to share on this mod? I never even heard of a FZS? can anyone point me in the right direction to find some rods or info?
Yes, that is a Single Sided Swingarm FZR600 that I built.
Something is lurking, waiting, wanting to be built......It calls to me from the darkness....
I can finally see the light at the end of the tunnel....Then I realize that it is the train coming to run my ass over....
Something is lurking, waiting, wanting to be built......It calls to me from the darkness....
I can finally see the light at the end of the tunnel....Then I realize that it is the train coming to run my ass over....
Re: 660 Motor, finally running :)
Hi,
its this bike here
on german ebay there are some rods at the moment
http://cgi.ebay.de/Pleuel-Satz-Yamaha-F ... 3ca61b3e60
its this bike here
on german ebay there are some rods at the moment
http://cgi.ebay.de/Pleuel-Satz-Yamaha-F ... 3ca61b3e60
Re: 660 Motor, finally running :)
My 1996 is a 660. I race it and do track days. I have much experience building FZRs and YZFs. Your build poses a few questions. What do you use for a clutch? How did you resolve the difference in piston pin diameter? What ECM did you use? Mine has a few other goodies inside and makes big HP on my dyno. Have you dynoed yours?