GPZ750/810 racer running....

a few hundred bucks saving in there

i'll be using the complete ignition system of a 90's gsxr

as it has only one pickup no problems with the timing of the two pairs not matching

it'll be mounted to a honda sohc4 plate....

...because it simply bolts on to the kawi fixing posts

peek through the hole and you'll see the rotor and pickup coil...

and its going to be capped off by my DIY heavy duty, crash resistant cover.

made it originally for my sohc4 but turns out it works well also on the Kawi. RSC stands for Racing Service Corporation, Honda's sporting arm before it became HRC.

another angle

dutchz wrote:

Coming along nicely! Are you going to run it naked or with a fairing?

hei dutch, gonna run it naked,

Save for one circuit, we dont have too many tracks with long straights, so hope that up to 130-140 mph my head will stay put

Looking good Turbo. I really like the motor mounts. Should be a good handling bike.

Hey TG,

I feel like a brother from another mother. I hope that RSC ignition cover doesn't melt off it's new home!

Regardless, your ride is coming together nicely. Still no news about the Ti retainers, do you want to forget them for now?

What are you hoping to produce on the dyno?

Hei Brent, welcome to the Klub

will run stock retainers for the time being, being a DOHC dont think it's super critical, and a bigbore is not going to be a screamer either.

Seen some dyno's where people got round 90 hp from just the 810/ 10.25:1 piston kit, degreed stock GPZ cams and carbs, so who knows what happens with 12.5:1, some mild porting and hotter cams? :

to be honest, 90 will do for the first few races till i get used to it. This wil be just the start of development

turboguzzi wrote:

Hei Brent, welcome to the Klub


to be honest, 90 will do for the first few races till i get used to it.

It's all about corner speed. Sure you can have power down the straights, but there will be bike that have 1/2 the rear wheel horsepower you have go right around you in the corners. Happens to me all the time.

I have seen from others, that with just the big bore kit, it will increase peak torque, but the compression, valve size, porting, carburetion, and exhaust outlet are the limiting factors in making more power. My race bike is top end limited for now, but from where I started, I've increased torque almost 10 ft. lbs. from a stock engine.

Good luck, and always remember to have fun first. It's a blast racing. :woohoo: