Quote from: Pat Conlon on August 17, 2025, 07:29:18 PMThe biggest modification I recommend on early FJ's is to replace your transmission shift forks with late model FJ forks and back cut the engagement dogs on 2nd gear.

Thanks Pat, good info.  Regarding the shift forks/dogs for the 2nd gear, replacing the forks and modifying the engagement dogs is a lot of work and effort.  Other than a test drive, I haven't really ridden the bike yet.  During the test drive, I did not notice any issue with the 2nd gear.  I'll give it more power and put more load on the 2nd gear the next time I ride the bike.  But if it turns out that the 2nd gear works fine, shouldn't I just wait for the issue to occur before tearing into the engine/transmission to fix something that isn't a problem (yet)?  Or am I missing something?   

Yep, DID ZVMx is my favorite.

I would be interested if it the correct upper.

DID chain for me too with JT sprockets.
Sunstar sprockets are alright though, got them on my Tiger 800xc.
Never skimp on quality chains for the FJ.

Quote from: MarioR on August 15, 2025, 12:39:27 PMAny pictures?

Try to post some tomorrow.

 What else is needed with 1188 Wiseco piston kit?

Nothing is really "needed" the displacement is close to the stock 1200cc that you could run the stock exhaust and airbox and carb jetting and everything would be fine.

However, a favorite saying around here is:
 Old FJ's don't die....because we modify!

Stock FJ jetting on the US models  is lean due to EPA regulations so we fatten things up for a cooler running engine.
From #37.5 pilot jets up to #40.0 or #42.5 pilots.
Shim the needle 1/2 step
From #110 main jets to 112.5 or 115.0 or even 117.5 or #120.0

The biggest modification I recommend on early FJ's is to replace your transmission shift forks with late model FJ forks and back cut the engagement dogs on 2nd gear.

An aftermarket header and UniPods are just frosting on the cake.
UniPods are especially desirable because time will come when you have to R/R your carbs and the UniPods will make the job easier.

A good tune with these mods will get you around 120rwhp.

Cheers

Pat

Ok just asking because the fj1200 jugs say 1188cc on them but people make them 1250cc or even larger.

Do you know if the carbs were changed from the FJ1100 carbs to the FJ1200 carbs? Do you know what jet sizes are in the carbs?

Buy these air filters to flow more air in. They delete the stock airbox. You'll need to buy two. But you will need to modify the carbs to run these so you should decide what you want to change on the exhaust too so the group can make suggestions on carb jetting.

https://www.rpmracingca.com/proddetail.asp?prod=Carb%3ARPMPod&cat=24

Plus the filter oil

https://www.rpmracingca.com/proddetail.asp?prod=Carb%3Afilterspray&cat=24

What state are you in? Carb jetting varies by state (elevation, temp, humidity etc)

Quote from: 86FJNJ on August 17, 2025, 05:55:01 PMHow do you know it was an 1188 piston kit and that they didn't go larger?

I was told that by the fellow who sold me the bike.  He got that information from his mechanic who went over the bike and apparently removed the head to see what had been installed. He gave me the exact Wiseco kit part number.  So I haven't checked it myself but I have to go with what I'm told. 

How do you know it was an 1188 piston kit and that they didn't go larger?

Gents,

After noticing a clicking at low speeds I took a look at the 93 today. Looks like my chain has 2 tight spots. I have absolutely no idea what I put on there last time. It's been about 25k since I did chain and sprockets. If I had to guess I used a DID chain. Looks like the pool has gotten deep in the chain world. What do people like for a "stock" replacement. My go to is Sunstar sprockets, open to opinions on chains.

Thanks,

Daniel