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General Category => Modifications => Topic started by: E Double on June 21, 2010, 08:56:55 PM

Title: What is the stock gearing for an '84 FJ?
Post by: E Double on June 21, 2010, 08:56:55 PM
Hello folks,

I am planning on changing the gearing on my FJ.  The R's are a bit too high when I'm on the slab at speed.  I was using gearing commander to sort out what I wanted to change my gearing to, but I was using the FJ info in the database;  Which is for the FJ1200.  I thought that the gearing for both bikes was the same but now I've come across some sites that say a 17/42 is the standard gearing for an 84.  Is this the case?  Cheers for any help clearing this up for me.

Cheers,

Dennis
Title: Re: What is the stock gearing for an '84 FJ?
Post by: fj1289 on June 21, 2010, 09:51:15 PM
17/42 for US models.  Some markets got 17/41 (I don't know which).

I think the late model FJ1200's had 17/39.  Several folks have gone to an 18 tooth c/s sprocket.  

Two thoughts - the FJ has enough torque to pull more gear if you want and don't mind a bit more clutch slippage getting away from a stop, and the FJ also has a good set of lungs and doesn't mind running all day at 6 or 7K either.  Just depends on what you prefer!

Also, no need to go elsewhere to get info on these bikes - check here first!  Like this: http://www.fjowners.com/index.php?board=23.0 (http://www.fjowners.com/index.php?board=23.0)

Chris  
Title: Re: What is the stock gearing for an '84 FJ?
Post by: racerman_27410 on June 21, 2010, 10:26:42 PM
you can put an 18 tooth countershaft sprocket on.


drops the revs nicely.


Kookaloo!
Title: Re: What is the stock gearing for an '84 FJ?
Post by: andyb on June 22, 2010, 12:06:22 AM
Depends on the year, the first models were 17/42, then 17/41, then 17/40, then 17/39.

17/39 is a great compromise if you're on stock wheel sizes, but 18/41 or so is likely the best choice overall as it'll help your chains last.

Sprockets aren't real pricy, just make sure that you get enough chain to wrap around them!
Title: Re: What is the stock gearing for an '84 FJ?
Post by: Harvy on June 22, 2010, 12:51:23 AM
Not answering your original question regarding stock gearing but.....

As several have already stated......gearing can be just about anything you would like with 16-18 tooth c/s sprockets readily available. Rear wheel sprockets can be had in 37 thru to maybe 45.
I run 18/38 on my '91, which is quite high, but then again, I don't ride like I stole it around town, and Its running at just under 4000 at 120 KPH in top gear with 17" FZ1 wheel.

Harvy
Title: Re: What is the stock gearing for an '84 FJ?
Post by: E Double on June 22, 2010, 05:33:00 PM
Thanks for the info folks!  I think I'm going to go with 18/41.  It looks like it will cool out the revs a bit, and these mills have gobs of torque.  Besides, I don't go for the holeshot anymore so I don't think I'll miss the bigger set of stundines on the low end.  Cheers again for the info!

Dennis
Title: Re: What is the stock gearing for an '84 FJ?
Post by: ccsct203 on June 24, 2010, 10:23:50 AM
I had a 18/38 setup and I was able to do 55mph in first gear and not be close to the red
the issue was with my mikuni flats they did not line the hills in a high gear.
where I would not have to down shift before, I did after the change to 18/38
I don't know if the megacycle cams were the issue (268/2) but life is better with the 17/43 setup
:morning1: