Well I'm sorta new to them, but not new to 400's.

I have the NC29 here. viewtopic.php?f=69&t=31490
And the NC35 here...viewtopic.php?f=23&t=29392

I have been having a 1WG with a 3TJ swinger (I believe) with a Built EX500 motor in it. I bought it like that as a guy built it for a specific class over here. But that motor has since blown up so I figured I'd get a 400 lump and put it back in as a back up. The Chassis handles like a dream.

Current specs of that bike are

1988 1WG Frame might have a 3TJ swingarm, yall will have to let me know that one
Stock 400 motor 14k miles.
FZR600 Forks with Traxxion Dynamics internals
Fox Twin Clicker Shock
NRC case covers
Going to run a Total loss
Full Yoshi system
Plan on installing a Factory Pro jet kit but don't know about the filter yet.

The plan is to send the motor to a shop that Specializes in FZR's and they will install a 490cc kit in it (spec regs for a race class here). Going to put out between 82-85hp with flatties.

This is it as the Hybrid.



I also purchased as a package deal the below listed bike that came with another 1WG Rolling chassis with a stock 400 motor.

The below bike has the following

1989 Yamaha FZR400
2mm overbore (428cc)
Megacycle X9 cams
"Head work" - ported & valve job
Crank lightened and balanced by APE
Total Loss Setup with stock engine starter and stock battery
NRC Racing Engine Case Cover
Keihin FCR33 Flatslide Carbs
Honda CBR600F3 Radiator
EBC Pro-Lite full floating front brake rotors
EBC brake pads with stock 1989 calipers
Fox Rear Shock with adjustable ride height
Woodcraft CFM Rearsets
(2) Honda CBR600F2/F3 Rear 17" Wheels

Ok - well welcome to this section of the forum then

First things first, the swingarm looks like a 3TJ although the brake's been mounted above the arm. It could equally be a 3en2 arm (the model before the 3TJ) which was your California SAC bike, I think. I guess this has been done to get a 17" wheel in the back.

More general stuff ... the usa model years are different to the UK and Japan ones, your 89 is actally a 86/87 Genesis model to us.
Your forks are 38mm dia (?) later FZR600's used the same type but had 298mm disks (yours are 285mm). You can look for a Foxeye or Thundercat front end which should drop straight into the headstock that wouls give you 41mm RWU adjustable forks and a 3.5" front wheel rim, the spindle dia is wider too. Depends on the rules I guess.

The biggest limit to breathing is the airbox rather than the filter. When a 600 engine is used is this that is the problem, but I guess with Flatslides on it you'll ge to a bolt on type ???

i think the 600 rear rims was a popular conversion for the standard (3en) swingers as they don't do the 3tj as an import over there so probebly more likely to be a later model 3en swinger.

Evilchicken0 wrote:Ok - well welcome to this section of the forum then

First things first, the swingarm looks like a 3TJ although the brake's been mounted above the arm. It could equally be a 3en2 arm (the model before the 3TJ) which was your California SAC bike, I think. I guess this has been done to get a 17" wheel in the back.

More general stuff ... the usa model years are different to the UK and Japan ones, your 89 is actally a 86/87 Genesis model to us.
Your forks are 38mm dia (?) later FZR600's used the same type but had 298mm disks (yours are 285mm). You can look for a Foxeye or Thundercat front end which should drop straight into the headstock that wouls give you 41mm RWU adjustable forks and a 3.5" front wheel rim, the spindle dia is wider too. Depends on the rules I guess.

The biggest limit to breathing is the airbox rather than the filter. When a 600 engine is used is this that is the problem, but I guess with Flatslides on it you'll ge to a bolt on type ???

I didn't know about the 86/87 thing so that's for that info.

Forks are 38mm as of now so you are correct. I may upgrade it later but as of now these work very well so I will leave it for the time being. The Green bike has a 18" inch still in the back as of now. But that will change. As far as the flatsides go I will have to talk to Steve at Speedwerks and see what he recommends. If it is a pod system that's fine or if he advises an airbox I'm sure he can source one.

I will have a look at the F3 rim on the older model yellow bike swing and see what was done because I would like to have both bikes on 17" rears.

Thanks for the info guys.

http://www.madsi.co.uk/main.aspx#

try here for the wheel info.If it doesnt bring up the wheel specific page just click wheels on the side menu.

Try these topics
viewtopic.php?f=37&t=27585&p=196262&hil ... on#p196262
viewtopic.php?f=37&t=29995&p=214071&hil ... on#p214071

I have a feeling that a Suzuki wheel can be fitted too but it's one of those things I think I heard a while ago

Ok thanks for the link and info fellas. I am looking to install a YZR600 rim. That should work with the minimal amount of mods I would guess. I want to keep the F2 rim's with the yellow bike as a spare set for racing.

cajun wrote:Ok thanks for the link and info fellas. I am looking to install a YZR600 rim. That should work with the minimal amount of mods I would guess. I want to keep the F2 rim's with the yellow bike as a spare set for racing.

Do you mean YZF600? If you're going to try and fit in in a 1WG swingarm it'll be a struggle, they only just fit in a 3TJ swingarm and they're wider than the 1WG arms. It's easier, if you can find one over there (or find one over here and ask someone to send it over), to use a TRX850 swingarm- the wheels are the same- and make the swingarm pivot narrower to fit in the 1WG frame than it is to try and make the 5x17" wheel fit the 400 arm.

This is my old 3EN1 (yes, it looked crap but it was a feasibility study. Turns out TZ bodywork isn't feasible ) with a TRX swingarm and wheel fitted-





Honestly, it's just loads easier I've got that same arm in my 3TJ 4/6 now.

Sorry Kayla yes I meant YZF600. And my bike currently has the deltabox swing arm. Any info on how difficult it may be to fit that rim to that swing arm?

And come on she doesn't look that bad.

cajun wrote:Sorry Kayla yes I meant YZF600. And my bike currently has the deltabox swing arm. Any info on how difficult it may be to fit that rim to that swing arm?

And come on she doesn't look that bad.

Who? Me or the bike?

For a 3TJ arm you need to use a 9.5mm spacer on the left (down from 13mm standard) and the sprocket studs end up really close to the swingarm, plus you need to either adapt the standard caliper hanger or make a new one up. It's really a no-go in the narrower deltabox 1WG arm, there's no room at all for a caliper hanger once the wheel is spaced for the sprocket carrier. I suppose you could get the wheel machined, but it'd be cheaper, quicker and much less trouble to find a TRX swingarm because you can use all standard parts then instead of having to have custom stuff made up. The only thing that'd need to be altered is the swingarm pivot width (which can be done at home with a hacksaw and fine files), everything else is easily available over there (you can use all of the YZF600 wheel parts. The caliper and hanger is slightly different to the TRX in that it's held above the disc instead of under it, but it's not insurmountable.) There's no issue with the chain run either, it just all lines up