New Member - CBX750 Project

Kristian750

Kristian
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Hello,

My Name is Kristian from the UK. I picked up a CBX750 back in October 2020 and now have a full on project on my hands! Plan is to build a 80's "GP Bike" with some modern touches...

Anyway, enough with the writing. Here are some pictures...

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So far the current spec list is:

CBX750F 1984 Frame
2007 CBR600RR Rear Swing Arm
Ohlins TTX Rear Damper
2012 CBR1000RR Front Showa Forks
2013 Enkei CBR Wheels
1982 CBX550 Fuel tank
Renthal Clip-ons

I have an RC42 Engine to drop into once built with some 70.5mm CP Pistons and will use the RC17 Cylinder head. Got lots of engine work to get done over the next few months and hopefully will have a running bike by the end of the year...
 

Kristian750

Kristian
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So after a little work trip away, I’ve finally had some movement on this. The engine is now currently being built and some very SHINEY bits have been delivered after what seemed like an eternity of waiting…
 

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Kristian750

Kristian
Messages
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Reaction score
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Location
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A considerable amount in all honesty, the rear needed a whole new suspension mount fabricated and welding on to the frame, new spacers needed to be machined.
To use the original CBR triple trees, the upper head bearing cup had to be cut out and a new larger one pressed and welded in its place. I think I will also need to notch the frame for the chain and use an offset front sprocket but I have not got that far yet.
 

Kristian750

Kristian
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In terms of the bike, not much has happened to be honest, it’s been a long run up to Christmas with work and now I am halfway between moving from the UK to Italy. Once the garage is set up and the bikes are here I will hopefully have a bit more progress..

Saying that, I have managed to get the mock up engine in the frame now and been on a bit of a parts hoard and have started to draw up an inlet manifold to get the carbs mounted to the engine…

I’ve been scouring the internet for a set of cams to no avail, in 84, Honda with HRC developed a “power up” kit but They are impossible to find. Some of mates (I work for Honda at the moment), in Japan have even tried to find old stock but all parts have since been thrown out…
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