84 FJ1100 Brakes and Rotors Upgrade

[FJ1100mjk]

Si. 

[Alf]

When you ride that the 1200 dominate the 1100, be present that most of the 1100s that came to Spain were limited
Mine, bought in UK, give 118 rear wheel hp completely STD in a Dyno and the firts tests is Spain gave 115-125. 1 year after, never again was recorded more than 95 hps

[ribbert]

When you ride that the 1200 dominate the 1100, be present that most of the 1100s that came to Spain were limited
Mine, bought in UK, give 118 rear wheel hp completely STD in a Dyno and the firts tests is Spain gave 115-125. 1 year after, never again was recorded more than 95 hps

Alf, to what do you attribute the extra power?

[Alf]

When I sold my 1100 (moded by then and powering 128 hp at the rear wheel) and bought my 1st 1200 I had in mind that mag test, that now I enclosed the horsepower table. In fact I thought that it was due to the correction factor on the Dyno, and I believed that I improved buying my 1st 3CV



Well, I was completely devastated and I sold only 18 months after and with only 44.000 kms. Another thing were if the mag would have included the 1st FJ 1100



there various opinions about this issue. It was spoken that the 2nd year the 1100s were imported from France, limited to 100 hp or that Yamaha "prepared" the 1st 1100 test bikes... In Spain the 1st serie blue ones were looked for because these always had more horsepower... It was said too that Yamaha limited the 1100 richening the mixture to avoid overheating in South Europe countries...

Well, I´ve always maintained that 1100 are faster... because MINE were a lot of FASTER and because of the numbers don´t lie...

[Alf]

Take a 2nd look at the 1100 horsepower chart: 125,03 REAR WHEEL HORSEPOWER

[ribbert]

Take a 2nd look at the 1100 horsepower chart: 125,03 REAR WHEEL HORSEPOWER

Alf, I'm not disputing what you say. I just wanted to know what made the 1100's more powerful.

Noel

[fj11.5]

Good question noel, id like to know also

[Alf]

Alf, I'm not disputing what you say. I just wanted to know what made the 1100's more powerful.

Noel
[/quote]

I know, I know.... but like I said before, I don´t know. The fact is the 1100 need more fuel (125 mains) with the same carbs and airbox volume and less ccs. It could be is less restricted. I´ve only got the similar hungry for the redline in 1200s after carefully carb tuning (including float heigh measure), and getting airbox intake & exhaust free flowing... but the 1100 fast acceleration was STD!!!

My theory?. the crank was lighter... I know, I know, Yamaha specifies the same crank for all FJs... but we don´t know if the materials have changed to a more economic ones

Why have this theory?. Well, I´ve tested a 1200 3CV with its OE engine and a 3XW inside. And the vibrating less 3XW is not only for the grommets chassis hybrid. The bike feel sweet & and softer with the 3XW straigh on, and it only can be due to a more efficient (and heavy) 3XW crank... even with the same Yamaha PN

Another bike with in theory the same specs in 2 years and different performance was the FZR 1000. 87 models were the most powerful, with around 115 hp at the rear wheel. 88 models had more torque and less power, around 100 hps. The only explanation is a heavy crank

[CRashrat]

I've had my FJ1100 for less than a week, but was wondering about this myself. I came across a site that sell adaptor plates for the first-gen V-Max that may work. (There are actually a lot of places selling adaptor kits for that bike.)

This kit gives you 'busa 6p calipers, but you need to purchase larger rotors and a master, too.

http://www.morleysmuscle.com/muscle-bikes/vmax/brakes

Unfortunately, my bike will need some carb work before I experiment with anything like this... 

CR

[FJ_Hooligan]

Sounds like you're trying to spend a LOT of money to fix something that's not necessarily broke.
If your calipers are trash, then maybe you need to replace them rather than rebuilding (rebuild kits are expensive).
HOWEVER, if everything is in good working order, you might want to try a set of new pads. 
Good quality pads can really improve braking performance.  More pistons are not always the best answer to improved braking.
Try a set of FERODO pads or some HH pads first.

[Alf]

1100 or 1TXs 1200 brakes are fantastic with the OE pads (Sumimoto) and a Nissin master cylinder from a Fazer 600/1000 (Brembo masters fitted on 2002 on models are not so good).

[ribbert]

1100 or 1TXs 1200 brakes are fantastic with the OE pads (Sumimoto) and a Nissin master cylinder from a Fazer 600/1000 (Brembo masters fitted on 2002 on models are not so good).

Alf, I'm surprised you recommend the standard pads, have you ever tried the EBC HH pads?

[Alf]

Hola, Noel amigo

In around 500.000 kms riding FJs I think I´ve tested each brake pad in the market with different discs, masters and callipers  
And I´m fortunate because regularly I ride other FJs (and other bikes) apart of my actual 3CV, so I have different bikes to reset myself

EBC pads are very good... with EBC discs. If not, you have a wooden feel at the lever that I dislike. Well, the "feeling" is a very personal issue, but with OE pads and Nissin master braking is near the same that mine with gold R1 callipers, and it is to say a lot! (I ride a 1TX a lot of times)

Much better are Goldfren HH pads, but I´ve not recommended to 1100 and 1200s 1TX owners because I´ve not tested myself with the OE disc. These are the next pads to fit in my friend Mingo 1TX, so wait...
In my CBX 750 (similar disc compound) work superb, much better than the previous Ferodo HH

[Paul1965]

I am looking for a direct bolt on upgrade of brake rotors and pads for my 1984 FJ 1100 does anyone have a reccommendation? Also, any opinions on the Pirellii Sport Demon Tires?

I have Sport Demons on my 84 and have no real complaints. I replaced the rear when I bought the bike and have just over 3000 miles on it already with no noticeable wear. My only issue is that the front is too skinny and tends to wander more than I care for if you run over a concrete center line or seam patch in the road.

[FJmonkey]

I have Sport Demons on my 84 and have no real complaints. I replaced the rear when I bought the bike and have just over 3000 miles on it already with no noticeable wear. My only issue is that the front is too skinny and tends to wander more than I care for if you run over a concrete center line or seam patch in the road.

Paul, if you have a 120 on the front you might have a different issue. Contrary to OEM info, the modern 120MM width is for 3.5" wheels. You might get better results with a 110MM wide front.... It was described once as cold custard in an old sock.... Pinch the front and you reduce the contact patch....