Frank - and anyone else running the XJR output shaft,
How much clearance do you have between the chain and the frame?
Thanks,
Chris
Chris.....not the answer you were after but Randy RMP has reported that the clutch pushrod and gearchange shaft are the same 8mm longer that the corresponding FJ parts, so I would GUESS that the chain is now 8mm closer to the frame.....of course, I'm probably wrong. :crazy:
Harvy
Quote from: fj1289 on November 22, 2009, 11:37:21 PM
anyone else running the XJR output shaft,
How much clearance do you have between the chain and the frame?
ZERO! ... had to grind the frame.. chain was hitting the welded-in nut for the lower sideplate(rearset) bolt. I don't know exactly how much clearance the grinding left me with but I can say it is adequate :good2:
..I thought I had a before-&-after pic of it online somewhere but can't seem to find it..
Quote from: Harvy on November 23, 2009, 01:02:40 AM
clutch pushrod and gearchange shaft are the same 8mm longer that the corresponding FJ parts,
Hey Harvy, the C/S and the clutch pushrod are the same 8mm... but the shift shaft is approx 25mm longer.
...just sayin' :good2:
(http://inlinethumb64.webshots.com/24895/2744964490068526197S600x600Q85.jpg) (http://rides.webshots.com/photo/2744964490068526197oIMrGK)
(http://inlinethumb05.webshots.com/37252/2831496410068526197S600x600Q85.jpg) (http://rides.webshots.com/photo/2831496410068526197EibmUs)
... one thing I was curious about is if you could use the standard FJ clutch pushrod with 2 balls instead of one? The balls are 8mm..?
i think there may be some dimensional differences in the FJ frames from the factory..... i have clearance from chain to frame..... not a lot..... but i didnt have to grind anything.
Kookaloo!
Well I was half right tRoy... :biggrin: ... makes sense seeing as the c/s sprocket cover is also deeper if I remember correctly.
So what are you running for a swingarm/ rear wheel?
When I did the FZ1 in my '91, I found (thanks Frank & Eric) that the Honda VF1000R 18 tooth c/s sprocket with grinding of one face, and flipping the wheel sprocket (the stock 44 tooth FZ1 sprocket is offset) on the FZ1 wheel gave adequate clearance for chain - frame and chain - tyre clearance and no alignment problems.
I've since changed to 38 tooth sprocket on the back.
Harvy
Thanks guys!
Sounds like the shaft AND and offset sprocket is a no go!
For those that may be interested, TRAC Dynamics have a 1/4" offset sprocket for the R1 (R1 uses the same c/s sprocket as the FJ) intended to be used with their 240 tire kit, but available separtely for $70. Only comes in 16 and 17 teeth though. For comparism, 8mm is an RCH larger than 5/16". Could be handy for the YZF600 swap without having to machine the sprocket carrier...
Chris
Also, for clarification, I've got the motors pulled from both frames right now - nothing to measure! THanks again for the help!
Quote from: Harvy on November 23, 2009, 04:19:00 PM
So what are you running for a swingarm/ rear wheel?
I am running stock swingarm w/5.5 GSXR wheel... XJR countershaft w/standard FJ sprocket.
Not enough room @ the rear sprocket>swingarm to run studs & nuts on the cush drive, using 12mm bolts instead
Does our Randy have the counter shafts instock or if not the off set sprockets ?
I think that's PN# 5EA-17421-00 for the XJR countershaft (2003 I believe?). Can't hurt to ask him ( randy@rpmracingca.com ), but I don't see it on his site so it might be a special order. Lotta work to swap it if the trans isn't already apart, might be worth the effort to look into offset sprockets if you're not in the middle of a rebuild.
I have plenty of good used XJR transmissions. I am working on stocking sprockets & chain right now, but that is still a couple of weeks out.
Like Andy stated, send me an email.
Randy - RPM
randy@rpmracingca.com
Quote from: andyb on August 18, 2011, 08:01:30 AM
I think that's PN# 5EA-17421-00 for the XJR countershaft (2003 I believe?).
I'm curious to know if that supersedes to the current number which for 2007 and on is 5UX-17421-00
Don't know if I'm reading this correctly but:
What chain are you using? A 530 chain?
You can easily go to a 520.
But I like my engine cases the way they are.
DavidR.
HI Andy, I will email Randy tonight , I know its a big job on the countershaft sprocket but im quite happy to do it the only thing that really bothers me is i just fitted new rings/hone/decarb of my FJ1200 into XJR motor and tourqed down a new head gasket last sunday :dash2: Now im weighing up to either pull it down again for the countershaft while its out of the frame or fit a Offset sprocket for now and just get the XJR counter shaft for the next time im feeling motivated enough to split the cases. I know the right thing to do is to do it now while its out :ireful: :cray:
So let me see if im right now for my 3CV 1988 FJ 1200 motor into 1997 XJR 1200 I will need the XJR Counter Shaft, Shift Shaft, and Sprocket Cover ??? Will i need to run 2 ball bearings in the clutch pushrod if i use the XJR slave??? i have the FJ slave would i be better to run it or get that shaft as well ???
Thanks for the help!
The FJ slave cylinder is the same as the XJR, so don't worry about that.
Thanks FJ11120, So the difference is 8mm in the Sprocket Offset im sure its been said elsewhere but just want to confirm that.
I don't know about that.
But going back to your previous post, when i converted my 3CV to XJR i used the XJR pushrod, just in case 2 ball bearings might run up onto each other causing the clutch to jam. I don't know, that's my thought.
Quote from: Sideburns on August 18, 2011, 05:14:34 PM
Don't know if I'm reading this correctly but:
What chain are you using? A 530 chain?
You can easily go to a 520.
I'd bet an FJ will snap a 520 chain fairly easily..... If not, it WILL wear it out way too fast.
I've been running mine for over 20.000 km. No problems.
They make conversionkits for R1's and GSXR1000's. A good chain can handle that kind of power.
It is also a usefull conversion when you go to a wider rear rim.
gives just that extra bit of clearance. Doesn't hit the chain cover and keep well away from the tire.
Quote from: Sideburns on August 20, 2011, 05:27:04 AM
I've been running mine for over 20.000 km. No problems.
They make conversionkits for R1's and GSXR1000's. A good chain can handle that kind of power.
Yep, a good quality 520 will handle it as easily as same qaulity 530... Same side link strength, same pin strength, why not?
As a bonus there's less horsepower loss from the narrower roller, which is why they do the conversion for R1's, etc...
I'd stick with a 530 as well, noting that most of the literbikes weigh a sizable amount less than an FJ and load things a bit less. If you go for a 520, use the absolute best chain you can find.
In changing my 93' FJ to accept the 07' R1 parts, Randy hooked me up with an XJR Pushrod, Shift Shaft and Case Cover plus the required longer case bolts and seals etc... (the clutch plate and gasket were included so that while I had the right side open to do the shift shaft I could also get rid of the unreliable retainer spring/clip and skinny plate in my clutch- I was advised to get rid of these before they fail and ruin my oil pump!)
(http://i3.photobucket.com/albums/y92/backburner/FJ1200%20Yamaha%20Upgrades/IMG_0261.jpg)
The XJR case needs the upper right corner nipped off and then it goes on and off just fine. I clamped mine to a saw horse and used the grinder to remove the corner- easy. You cannot see the bare metal when mounted. Also, the XJR case cover works with the FJ clutch slave cylinder and looks stock when installed so you don't give up the OEM appearance.
(http://i3.photobucket.com/albums/y92/backburner/FJ1200%20Yamaha%20Upgrades/IMG_0263.jpg)
I am using a 1/4" offset sprocket from PBI that is an 18 tooth and cost about $40. I think it was for an R1 though because the spline mount area "cross-section" on the FJ sprocket was thicker and I had to use a homemade spacer behind the offset sprocket that was approximately .238mm. The .25" offset = 6.35mm + my .238mm spacer equals a total offset of approximately 6.588mm and my 6" wheel lines up with no mods to the sprocket carrier.
I am not sure what wheel would require both the XJR Counter shaft AND an offset sprocket....?? I would think one or the other is the way to go. I kept my FJ counter shaft and was still able to mount a 6" wide wheel with decent clearance on the frame.
(http://i3.photobucket.com/albums/y92/backburner/FJ1200%20Yamaha%20Upgrades/IMG_0267.jpg)
Regarding the 530 vs. 520 issue. I regret not changing to the 520 when I had the chance. Not only are your clearance issues reduced significantly but so is the weight of the chain and sprockets..... If they find the 520 gauge adequate on the most powerful race bikes then I feel it is completely safe on my FJ. I studied the issue a lot and found no actual negatives to using the 520. It has more than enough tensile strength. I kept my 530 because the chain was new and all I needed was a set of sprockets. In retrospect, I should have just bought a new chain too and achieved the weight loss and spacious clearance... JMHO...
Cheers- Tim