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Old 10-19-2013, 08:08 AM   #8971
boingk
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Royal club, I'm running a 14/40 combo that's alright for cruising at up to 60mph/100kmh and still okay for tighter stuff.

If I was to go again I'd probably do 42 or 43 rear and 15 front for a slightly higher overall ratio and the option to go down to a 14 for pure trail riding.

Cheers - boingk
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Old 10-19-2013, 08:12 AM   #8972
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Quote:
Originally Posted by mcma111 View Post
Over here the XR600 comes with 14/48 and the XR650l has 15/45.

The NX650 second gear swap closes up the first to second gap and places it to the second to third where it's not felt as much. The NX650 fifth gear is like an overdrive fifth. Lowers the engine RPM at crusing speed.


The transmission main shaft has different tooth count between the XR and XRL.
This I need, and want. Im using 14/43 now and its fun on twisty roads, but runs out of breath on the highway.

Do you also happen to know that the internals are on a FMX650?
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Old 10-19-2013, 08:14 AM   #8973
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Quote:
Originally Posted by boingk View Post
Royal club, I'm running a 14/40 combo that's alright for cruising at up to 60mph/100kmh and still okay for tighter stuff.

If I was to go again I'd probably do 42 or 43 rear and 15 front for a slightly higher overall ratio and the option to go down to a 14 for pure trail riding.

Cheers - boingk

I did the 14/40 once, didnt like it very much, so went to 43, which made riding it in 5th pretty awefull. I keep thinking I have another gear left..
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Old 10-19-2013, 08:30 AM   #8974
mcma111
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Quote:
Originally Posted by Royal Club View Post
Do you also happen to know that the internals are on a FMX650?

No
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BMW's
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 10-19-2013, 04:27 PM   #8975
lookfar
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Quote:
Originally Posted by boingk View Post
Royal club, I'm running a 14/40 combo that's alright for cruising at up to 60mph/100kmh and still okay for tighter stuff.

If I was to go again I'd probably do 42 or 43 rear and 15 front for a slightly higher overall ratio and the option to go down to a 14 for pure trail riding.

Cheers - boingk
I'm currently running a 15/42 combo (that's what I had)
Good on the road cruising, plenty left after 100Kmh, but would be way too tall for off-road twistys.
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Old 10-19-2013, 09:14 PM   #8976
lstzephyr
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My friends 1986 XR600R seems to be missing any tabs to drive the speedometer gearbox. The old box was seized and I was going to mount a drive box off my xr650r to drive a xr650L speedometer. However when I removed the drive box I can't see any way the box is driven. Any ideas? Could the seized box have damaged it?

The bike is a bit of a bitsa but I'm betting the front hub is original from the amount of rust and crap on it plus the small front axle/bearings.
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Old 10-19-2013, 11:32 PM   #8977
boingk
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Quote:
Originally Posted by lookfar View Post
I'm currently running a 15/42 combo (that's what I had)
Good on the road cruising, plenty left after 100Kmh, but would be way too tall for off-road twistys.
Yeah, I've run a 15/40 combo and it was really tall... cruising in 4th saw an easy 90kmh but shift to 5th and it didn't want to sit happily under about 120kmh or so. Overgeared.

The 14/40 at the moment isn't bad and will take you down to a slow jog in 1st without juddering or stalling but 14/43 would probably be better for offroad and 15/43 better for a mix of onroad and off.

- boingk
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Old 10-20-2013, 04:37 AM   #8978
mcma111
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Quote:
Originally Posted by lstzephyr View Post
My friends 1986 XR600R seems to be missing any tabs to drive the speedometer gearbox. The old box was seized and I was going to mount a drive box off my xr650r to drive a xr650L speedometer. However when I removed the drive box I can't see any way the box is driven. Any ideas? Could the seized box have damaged it?

The bike is a bit of a bitsa but I'm betting the front hub is original from the amount of rust and crap on it plus the small front axle/bearings.

If you look at the right side of the hub you should see notches around the axle hole. This is where the drive plate should rest and this plate is what drives the Odo assy. Look at a Honda parts fich to see what's missing.
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BMW's
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91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 10-20-2013, 04:37 AM   #8979
lookfar
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Quote:
Originally Posted by lstzephyr View Post
My friends 1986 XR600R seems to be missing any tabs to drive the speedometer gearbox. The old box was seized and I was going to mount a drive box off my xr650r to drive a xr650L speedometer. However when I removed the drive box I can't see any way the box is driven. Any ideas? Could the seized box have damaged it?

The bike is a bit of a bitsa but I'm betting the front hub is original from the amount of rust and crap on it plus the small front axle/bearings.

Part No 9.
Cost $4.77


http://www.servicehondapsn.com/fiche...88&fveh=132519
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Old 10-20-2013, 06:42 AM   #8980
Airguitar
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Quote:
Originally Posted by mcma111 View Post
I would imagine that you can bore your cylinder to what ever size you want up to 100mm and then get it re-coated. As far as what piston to use, any will work. The piston doesn't care if it's an iron or Nikasil cylinder.

If you want to stick with the Nikasil purchase the piston and send it with the cylinder so that the cylinder is sized correctly.
Thanks Steve. I think I will go this route. What I have read is that the rings are chosen for either Nikasil or Cast Iron.. I think it's best to go OEM and year correct to avoid any hiccups.
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Old 10-20-2013, 08:20 AM   #8981
mcma111
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As far as I know a ring is a ring.
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 10-20-2013, 02:21 PM   #8982
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Replaced rear wheel bearings today (first time for this bike, for me) and when I got the second bearing seated I realize that the distance collar was pinned between the two bearings, inside the hub. There was enough pressure to prohibit the bearings from spinning. Not really sure what this means. Is the distance collar too long? Maybe not OEM? I slipped a socket in the left side, onto the flared end of the collar, and gave it one good rap with a hammer. This pushed the right-side bearing out ever so slightly, and now everything spins nicely. I feel like this is kind of asking for trouble, though. Am I being overly paranoid?


:::: (@) :::::
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Old 10-20-2013, 03:21 PM   #8983
lstzephyr
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Quote:
Originally Posted by mcma111 View Post
If you look at the right side of the hub you should see notches around the axle hole. This is where the drive plate should rest and this plate is what drives the Odo assy. Look at a Honda parts fich to see what's missing.
Quote:
Originally Posted by lookfar View Post
Thanks a bunch guys!
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Old 10-20-2013, 03:39 PM   #8984
hallfleming
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Cam Tensioner?

So I noticed a ticking on my 94'. When it's at idle you can't hear and it becomes apparent when you start give the bike throttle. I bought a Tensioner thinking that was it. I just checked the valves and the intake valves were a little tight. I adjusted and started the bike. Still got the rattle. Before I pull the top cover off, has anyone experienced this type of noise from a tensioner?

Thanks in advance!
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Old 10-20-2013, 04:13 PM   #8985
mcma111
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Quote:
Originally Posted by hallfleming View Post
So I noticed a ticking on my 94'. When it's at idle you can't hear and it becomes apparent when you start give the bike throttle. I bought a Tensioner thinking that was it. I just checked the valves and the intake valves were a little tight. I adjusted and started the bike. Still got the rattle. Before I pull the top cover off, has anyone experienced this type of noise from a tensioner?

Thanks in advance!

Be sure that when you do adjust the valves that the engine is on the compression stroke and as you come up to TDC you hear the decom assy CLICK otherwise the right exhaust valve will be WAY out of spec and NOISY.
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BMW's
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79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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