Paul -I'll take it - I've also messaged via FB

Jeff Collins

Anyone in the Cardiff area with a sorted z900 a4 with 4 into 4 ? My bike is running nicely but I’d really appreciate listening to a ‘normal’ engine noise.

Thanks

120 mains is miles too big with airbox and will be drowning the motor. Should be 102.5 to 107.5 depending on year so start at 107.5 and work down. Once fitted if the problem still persists and the pilot circuit is definately clear then the issue might be tuned out on the pilot air screw. To determi...

Lifted the needles one notch (from 3 from top to 4 from top) and the bike runs great - smooth right through the rev range (to 5000 ish, running in after engine rebuild)

17.5 pilot, 120 main jet, not sure on needle position and standard air filter

17.5 pilot, 120 main jet, not sure on needle position and standard air filter

Stock air box and exhaust, they are 28mm carbs no pump, no fuel screw

Carbs stripped, and all pilot airways blown clean with carb cleaner, 117.5 pilots. Timing done with strobe at idle and 2500+ rpm. Set the carbs up with a 4 way manometer, all within 2cm ish Hg at 1500 rpm 98BD319B-A2DF-4576-911F-7FE92D924C42.jpeg Bike starts and runs much smoother and is now drivabl...

Thanks both, I set the timing statically and checked with a strobe, I’ll check the pilot jets

Bikes fully rebuilt, all new bits, engine reconditioned and carbs clean rebuilt. All new wiring plus new Dynatek bits with coils.

Starts fine, when at riding small throttle openings misses, open the throttle wide and no issues.

It’s bored to 1015 and has z1r carbs

Any pointers at where to start ?

Getting there, in reverse order

Thanks

Just had the frame back from coating re-tapped threads, looks really good but I’m think will it compromise electrical connections. I can see the main -ve connection to the engine but would appreciate any hints / recommendations

Thanks

Thanks for the info and advice, apologies for missing the pics - bike is in bits now... first mistake made, I put a cost forecast together