YAM 89' FZR 400RR UNITED FZR 600 ENGINE???

[URIEL]

Hello,
Does anyone out there know or at least have an idea if i could mate an FZR 400 exup with a FZR 600 engine,maybe an early R6?
Thanks.......

[mad4it028]

a friend of mine had an fzr400 with a fireblade engine so anythings possable although he had to have the frame welded lots of times as it kept snapping was alot of a death trap really but boy did it fly
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[MarJay]

FZR600 engine in the 400 is a common mod because the FZR600 is a steel framed bike, and the 400 has an alloy frame. An FZR 4/6 can be lighter and handle better than an FZR600 if set up properly.

An R6 engine won't fit I don't think.

There might even be an engine mount kit available to buy on ebay. You do need the FZR600 ignition and carbs though, so it has the potential to cost a lot. There are threads all over the place on different forums on the conversion. It isn't an easy task, but as conversions go its about as straightforward as it gets.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[DrDonnyBrago]

I think there is a FZR400 with a 600 engine in it on ebay atm.

EDIT:

https://www.ebay.co.uk/itm/Yamaha-FZR400-FZR-400-FZR600-FZR-600-Conversion-/330589440984?pt=UK_Motorcycles&hash=item4cf8aa8bd8#ht_3829wt_1139

[P.addy]

Yep, possible.

As MarJay said, fairly common mod that one

[TUG]

I think hes on about this... https://www.fzrarchives.com/fzr400/560.html I might be wrong though.

EDIT: yep i somehow read 400 engine and 600 engine. My bad.
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Haz ER-5, innit!

[URIEL]

[Pete.]

[Kickstart]

Hi

Think the 600 engine bolts straight into the 400 frame. Quite a few bits on the 600 have 1WG (FZR400) model codes cast into them.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[MarJay]

[Kickstart]

Hi

Might depend on the model of 400 and 600. Known a few people do the swap without the need for things like that (including into a Bimota YB7)

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing