very fast pulling away . not so good later on

[zedrider]

hi . i`m new to zed thou`s but ive had a zed 650 for 20 years . ive got a z1000ltd american import 1982 mk2 ? . from a standing start theres not much on earth quicker . but once your abouve 70 - 80 mph shes dosent seam very happy . the smoth power up take just drops away . the 650 will keep on pulling way beyond 100 mph . any ideas where i need to start looking ? many thanks . if your out about near south wales i`m located nr Raglan .

[RALPHARAMA]

If it's an import, do you still have all the American emission control crap attached? That won't help.

What plugs are you running?

What carbs?

Pods or standard airbox?

Ignition system used?

If we ever have a nice weekend again, Raglan would be a pleasant ride, providing there's a cup of tea at the other end

If you're ever this side of the bridge feel free to pop into sunny Pensford and I'll take a look at yer bike, and CB might even make yers a cuppa

[debben1]

Hello Zedrider, the Import LTD had a 16 inch back wheel as std, which would give it better acceleration but less mph, what gearing has been fitted ? (rear sprocket size and front sprocket size). Perhaps at some point somebody has fitted different sprockets, what revs are you doing at 80mph? This is the first thing to check and easier/cheaper to resolve than looking for lost power, if the gearing is ok then its on to looking for lost/more power, Regards, Steve

[zedrider]

shes an old lady now and tetchy lol the american emition stuff has been removed . and blanked off . shes running electronic ignition . and running with pods . but ive just bought a secondhand . airbox compleate . so i will be fitting that . bike is very relable . has no starting problems. tick over is very smooth at roughly 1500 . i havent been looking at what reves shes doing at 80mph . more intent on whatching out for 4 wheeled cheslea tractors . who feel they own the road :-( . tea is avalible here kettle never cold . more infomation too follow i havent looked at the sprockets as yet outher than to check the condition . many thanks for the help .

[Jerry]

As a blind guess, if you're running pods the main jets may be too small and she's running out of fuel.

[zedrider]

more on the zed shes not reving high at roughly 70 - 80mph shes not pulling more than 4 too 5 thou in top gear . the most ive gone too so far is 110 mph but at about 6 thou . petol consuption is fairly heavy at a tank for 104 miles ? however what i love is the handeling :-)

[zedrider]

problem solved was simple really dont use bosh plugs . now i`m back on ngk `s pulls like a train now 60 - 90 in the blink of an eye :-) knees in the breeze boys and girls :-)