GPZ750/810 racer running....

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:

PLUMMEN wrote:

nice quiz bag full of worms? light as a bag full of Expanded polystyrene?

not sure i get it, translation please...

Plum likes eating popcorn while watching and enjoying progress in a thread. :laugh:

Wonder if Cracker Jacks would be better?

Or maybe Boston Baked Beans?

Good Fortune!

turboguzzi wrote:

PLUMMEN wrote:

nice quiz bag full of worms? light as a bag full of Expanded polystyrene?

not sure i get it, translation please...

popcorn,saves time refiling bowl! :woohoo:

:laugh:

an other option would be:

"dont want my belly to be bigger than this...."

great job turboguzzi!
i like all the different modifications that you have performed.


leon

531blackbanshee wrote:

great job turboguzzi!
i like all the different modifications that you have performed.


leon

tnxs, but problem is that i still got quite bit more mods to do and only six weeks till first race :

I jsut remembered something. I have been told that back in the day, the racers would use one long bolt going from one side to the other on the front motor mounts, instead of the short ones that bolt the mount to the engine case. They said this would give extra support. Something I'll be looking into.



Reference number 92001F from the diagram above.

turboguzzi wrote:

531blackbanshee wrote:

great job turboguzzi!
i like all the different modifications that you have performed.


leon

tnxs, but problem is that i still got quite bit more mods to do and only six weeks till first race :

such is the evil of racing my friend.
i used to race quads tt and short track for several years. when it got to where the only time it was fun was when i was on the track,i quit.now i have more time to play with and enjoy my toys more.

i do still get the urge to go racing tho,maybe one day i will go back.
do it as long as it is fun.

leon