Project Yamaha R1-Z 250 YPVS in England

Photos showing the before and after of the back of the carbs after fitting the airbox to carb rubbers made from samco type 60 to 51 hose couplers.

 

The final dyno set up is going to happen, Double Take are fully booked up to the 2nd of August I found out today which was a bit of a pisser, however Chris did say bring the bike up this Saturday and leave it with them and they will fit it in as they usually get a cancellation or two. Happy days.
So after the last attempt when the bike developed electrical gremlins on the dyno and the airbox to carb rubbers were quite restrictive plus the slides were not opening fully resulted in a 0.6 bhp loss with the 30mm tmx carbs compared to the 28's.
Fingers crossed and all that it will be a more happier dyno time.

 

The bike is done and dusted, an absolute hooligan, I never knew 45hp at the wheel could be so much fun and the speed at which it gets up the road is something Yamaha never imagined for the bike. 0.5 of a horse power more than with the 28mm carbs what it has also done is give the bike much better low and mid range and is still a raging nutter when the power valves open.
Nothing else for it now other than to enjoy the craziness

 

I would have to look in the carbs to find out as they were set up on a dyno by doubletake motorcycles. I will be taking the carbs off soon to clean some crap off of the back of the engine so will have a look then and let you know.

 

Reset my float heights today and the jetting is 200 main jets, 40 pilot jet and 80 power jet.