Tuned CB350 Four flyby (528cc)

Sweet stuff.
- CB400F engine
- 528cc (Kawasaki GT550 58mm pistons)
- larger intake/exhaust valves
- electronic ignition ( Accent )
- CB550K3 carbs with adapterplate
- modified stock air intake (drilled airbox)
- Homemade stainless steel 4-2 headers, dual jama silencers
- Aluminium rims
- Dual brake discs and calipers
- Homemade rear&front fenders
- external oil cooler

[@cydways]

have any more info on the motor mods? kawai pistons fit the rods? no case clearancing? gaskets used? i have a Cb350f with a 400f engine waiting to be put in. i was going to do the 462.. but 528 sounds better!

[@ard5608]

Jezus, late reply. I used to get an email with every reply.. Yes they fit the rods. No clearance isues. But i bet you finished it already.. You can get good cheap 466cc pistons from ebay. Search for Cruzinimage.

[@tomh1146]

I am looking to do some engine mods on my 400f with your setup how reliable is it? Did you put corilla conrods in there?
What is the top speed of yours?

[@ard5608]

Doom H i sold it a while back. It had yamaha 550 conrods and cilindersleeves. Topspeed tested to 200kmh. But the final drive was far from stock, to make it rideable. Could keep up with an R6 from 0 to 60 kmh.

[@ard5608]

Doom H reliability depends on the builder.. i did 15.000 km with it.

[@tomh1146]

It was pretty damn quick then, did the 550 conrods bolt straight in?
Can you remember what Yamaha 550 they come from?
Bet it was fun to ride.

[@ard5608]

Yes, but you have to massage the engine casings a little. It is from a XJ. Valves are homemade, used from a car engine. Do not remember what type.

[@tomh1146]

Thanks for the info, time to start looking for bits.
Any tips when making a quick 400/4?