200 mph fj?

[Special Ed]

Hello everyone,
  I just bought a clean stock '86 with 38,000 mi. I installed some new Avons, new grips, changed oil, and had the carbs rebuilt by Pushrod Racing. Bike is stock except for the new air filters (couldn't resist). I would like to do the Mojave Mile with it while leaving the bike as close to stock as possible (just because I think it's sooo cool to blow other "race" bikes away with a sleeper). I was thinking about installing a new ignition system along with a nitrous fogger system. I know a bit about nitrous systems and plan to install a knock sensor and o2 sensor to keep an eye on air/fuel ratio and make sure I don't blow the thing up. APE is nearby and I will probably have them assist with this project. Anybody else done this? Any input would be greatly appreciated. -Ed

[FJmonkey]

Welcome Ed, Special is what you will have if you put some juice in your FJ Kookaloo. Check with Randy at www.RPMracingca.com, he builds the FJ engines for legends racing so he knows what you might need to prevent an FJ grenade. To get more zip you can also punch the CCs up to 1388, lighten the crank, oh hell, I could just go on....

[Special Ed]

Cool, Thanks,
Those guys have ALL KINDS of goodies and they're right here in CA! That looks like the place to take my engine for sure. I don't mind doing  engine mods, just would like to keep the exterior stockish looking.

[Dan Filetti]

To get more zip you can also punch the CCs up to 1388, lighten the crank, oh hell, I could just go on....

I once read a relevant statement. 

"Speed costs money.  Simple as that.  How fast do you want to spend."

Dan

[Special Ed]

Just noticed it doesn't look like those guys do machine work. No worries, APE can do all of that.

[Pat Conlon]

Just noticed it doesn't look like those guys do machine work. No worries, APE can do all of that.

Hello Ed, welcome to the forum...

Randy @ RPM certainly does do engine builds, and unlike APE, he specializes in FJ engines. Randy did a fine job with my 1349cc engine. Remember this so you know where to go when APE fucks up your engine.

BTW, you want to do a standing start 200mph mile run?
You're gonna need more on your FJ than a big engine and giggle gas....way more.....

[racerrad8]

Special Ed,

Below are a couple of examples of a couple of issues incurred by members here when using APE services, not from my personal experience, but issues I have had to resolve or give assistance to resolve.

APE SUCKS

...So off the APE the crank went. They got the sucker balanced to within 0.3 grams and removed quite a bit of material from the crankshaft. Although here is an IMPORTANT note, make sure that you record the numbers on your crankshaft before sending it out for any machine work. I wasn't aware that there were numbers on the end of the crankshaft that allowed for properly sizing your bearings. I found out about this when I was shopping around for bearings and when I called APE I found that they had already machined them off and neglected to write them down anywhere. 

All I work on is the FJ engine and I have over 18 years of experience in working on them.

I just finished up this engine and it is finally at the point of break in where dyno runs can get started to get it dialed in; Flynt's 1349


Randy - RPM

[Mike Ramos]

Hello Special Ed,

R.P.M. does in fact do machine work! And first class work too.

I was at their shop having work done on my FJ 1200 and had the opportunity to see Flynt's engine being assembled. The frame was there as well, sitting under a blanket awaiting completion of the engine. Both are works of art.

As Mr. Conlon has stated, it will take a whole lot more than "giggle gas.... way more..." His FJ by the way is a first class looking machine as well. Okay, it is impeccable!

However, on a more modest scale, R.P.M has done the majority of maintenance work on my [sometimes hard] high mileage FJ and it is because of Randy's knowledge & ability that it still runs strong.

R.P.M. is a full line stocking distributor of FJ parts. In addition they have developed FJ specific parts (including suspension) that really enhance the performance of the motorcycle.

Randy gives knowledgeable advice and he has had tremendous success as an engine builder and racer which validates that knowledge.

So I do not know if a 200mph FJ is possible,  but if it is, then R.P.M. is the place to begin.

Good luck with your endeavor,

Mike Ramos.

[Special Ed]

Thanks guys! Def. going to take my engine to RPM. Has anyone else tried or succeeded at breaking the 200 mph mark on a FJ?

[fj12_rider]

Thanks guys! Def. going to take my engine to RPM. Has anyone else tried or succeeded at breaking the 200 mph mark on a FJ?

Hey Special
    I have to say that speed is not even considered when I think about my FJ , for me its a comfortable , reliable , stable , incredibly fun tourer . I guess if you have the money and the inclination , you could make any bike do  any speed by boring the engine out and making it run on jet fuel .  There is no way i`d want to do it with my FJ for sure it`s my pride and joy and like I say racing isnt my thing , I would be more proud of mine doing lots of miles and covering lots of countries and still have a good engine than doing high speed . Good luck with it though and I mean it when I say that , It`s not my thing but we all have different interests but one thing is always joining us . The FJ is a cracking bike whatever you want to do with it .

[racerman_27410]

According to the FJ gearing calculator my Brutus should be good for 206mph if it would pull it all the way to redline in top gear  

It's still pulling really strong at 150mph with 1349cc, lightened crank,valves (and springs), cams and FCR39s ( on track @ VIR) but thats where my courage (and the front straightaway) runs out.... Was thinking about doing the Maxton mile just to see what the bike is capable of in the standing mile but would need to fit a steering damper before they will let me make a run.

200 MPH is a very strong number to be reaching for with a FJ.... I'm not saying its impossible but its going to take a TON of dedication AND cash on your part to get the old girl there.

the bikes i've personally seen hit that number at maxton were all turbocharged.

this guy was off the hook completely


Fastest Mile- 256.79 MPH on a Turbo Hayabusa

[Klavdy]

200mph?
You need to look up The Hebrew.
He's done 200mph but not on an FJ, ask him why.
He is also insane.

[andyb]

200 on an FJ, without any streamlining to speak of? 

You'll have to gear it a bit longer than you think (there's likely to be some wheelspin from bumps at those speeds), and I'd wager you won't manage a standing 200mph mile with much less than 220hp at the wheel.

That's an awfully long time to be bottle-feeding the motor.  It'll take a big, big shot to hit those numbers, and you'll end up with pressure drop unless you've got a huge amount onboard.  150mph should be relatively easy, though harder than you'd expect.  Anything much over a quite small nitrous system is going to require forged pistons, though the rest of the motor is relatively robust if you don't overrev it.  I'm not entirely sure that a mostly stock FJ with a safe nitrous system could break 175 in the standing mile, realistically.

[Dan Filetti]

  150mph should be relatively easy, though harder than you'd expect. 

I used to see an **indicated** 153-154mph on my '85 wid open running across GA at 5:00am. There may have been another mile an or two an hour in there with wringing the twist grip a bit more, and tucking in a bit tighter...

Now, I know the clocks are optimistic but I have since figured i was actually traveling perhaps 145mph, on a bone stock FJ with F1R slip-ons as the only 'performance' mod. An actual 150mph would not be all that tough/ expensive, -seems to me.

Last point here, my '02 GSX-R 750 is written to be able to hit an actual ~165mph -although I bought this after having kids so this is in fact the first machine I have owned without having been within spitting distance of its top end.

Dan

[aviationfred]

I think Racerman hit it correctly. For an FJ to break the 200 MPH barrier. First is some deep pockets, second would be 1300+ engine rebuild and third would be a Mr. Turbo turbo charger installed. That just covers the go bits. Figure on a front fender that more fully covers the front wheel, Full fairing lowers, brackets to add wieght at the front axle, and a more streamline rear cowling section.

Fred