3he to 3en1

[georgiemc]

Hope you can clear something up for me. I currently have a FZR400 3en1 with burst forks and a few other minor defects. My pal is selling a FZR600 3he with more than a little cosmetic damage. To my untrained eye, they look the same. Will a lot of the 3he fit my 3en1? Especially the forks?? TIA :-)

[Evilchicken0]

Yes ... Most things will swap. Measure the discs later 3he used 298mm your bike has 285mm the front wheels have different hubs but it should all swap.
The engine will bolt into your frame which is a good mod for your bike, you'd need the cdi, carbs and downpipes but the loom would be nice and the clocks will give you mph and the right rev counter / red line.
Front fairing should fit too

[400newb]

Yes ... Most things will swap. Measure the discs later 3he used 298mm your bike has 285mm the front wheels have different hubs but it should all swap.
The engine will bolt into your frame which is a good mod for your bike, you'd need the cdi, carbs and downpipes but the loom would be nice and the clocks will give you mph and the right rev counter / red line.
Front fairing should fit too

This is good to know! Just bought a 3en1

[Wraith]

This was copied from FZR Archives


What parts are interchangeable with the FZR600

Since there seems to be an abundance of FZR600 laying around, it helps to know what parts can be scavenged to preserve out beloved FZR400's.

The following parts will interchange:

rear wheels (if you use the caliper hanger that goes with the wheel)
front wheels (as long as the rotors/calipers go with their matching forks)
complete front ends (triple clamps are the same)
motors (with the change of a few things - see 600 motor swap)
handle bars and levers
gas tanks (the 600 has a slightly higher filler neck, but fits every where else)
switch gear and throttle (cables differ at carb)
foot pegs and levers
clutch cables
swing arms
rear shock and all linkages
carbs (may need jetting change)
front brake calipers (only applies to '88-89 400's and pre 4-piston 600's)
rear brake calipers (all)
front and rear axles
rear gas tank brackets
regulator (Sloan's says the part number is 1 digit off, but this has been tested in racing circles)
600 radiator to 400 frame (with a simple change in hose routing)
600 water pump to 400 frame (if you use the entire assembly, you need to use the 600 lower rad hose, otherwise, just use the 600 pump with the 400 cover)
radiator fans
radiator caps, (Quoted from an anonymous source - If the price of a new Yamaha rad cap makes you choke, go to your local auto parts store and buy one for an '89 Honda Accord. It's the same.)
thermostats
gas caps (Note, the filler neck on the 600 tank is taller)
ignition switches
sprocket covers
starter clutch covers
starter relays
cam chain tensioner
fuel pumps (The 600 has a larger OD on the outlet, but still works, a ZX7 pump is also a direct plug in, ask Tony Pagliaroli)
turn signals
Note: Starter motors and magneto/rotors are not interchangeable. However, more than a few of us have thought about swapping the entire assembly from a 600 to a 400!
As far as swapping parts between models, the '88 and '89 models are identical. The only differences to the '90 model is paint, 4-piston calipers (same as early FZR1000's and FZR750's), rotors with a different offset (but same diameter), and the all-aluminum Deltabox swing arm. Also note that there seems to be no readily available 88-89 400 cranks from the manufacturer. Instead, you need to buy a 90 crank, and it comes with slightly different oil seals to match the 88-89 cases.

[willandrip]

That's a cracking post Wraith. !

Also from other forums recently;

It appears the 3EN1 and 3HE seat plastic bodywork is not compatible.

I had advised that it was a relatively straightforward procedure in the past. :

This only appears to be relevant when using aftermarket f/g race seat units.