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Messages - sidevalvedave50

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CB750 / Re: sprocket sizes

« on: March 02, 2010, 08:46:10 PM »

Cheers Yoshi,
this sounds about spot on for the bike, i just need to put it back together,get the Swarbrick exhaust fitted and do some speed trials down the local bypass (purely research officer ) ! I will keep you informed on my research

CB750 / sprocket sizes

« on: March 01, 2010, 10:07:27 PM »

Thanks for your answers to my previous posts as it is reasurring to know there are fellow enthusiasts willing to help out with their own take on certain subjects so here's one which might get a good response.
As the k7 based cr750 is in bits i thought it about time to sort the gearing out. When i bought the bike the previous owner said he had the bike geared high for more emphasis on top end speed, i have never felt the bike to be all that fast on accelleration but being a RG500 owner i may have been spoiled in that department. When the bike is in top gear at a indicated 70-75 mph the scitsu tacho is reading 4000 rpm. The bike has a Nova gear cluster fitted and a 15 tooth front sprocket and a 35 tooth rear sprocket fitted. What is the best combination for fast road work i.e accelleration ? David Silvers state 15 tooth front and 41 tooth rear as standard so i imagine i will have to go up on the rear one .

CB750 / Engine number

« on: February 25, 2010, 02:39:51 PM »

Can anybody identify my spare engine which looks like i am going to rob parts from for my cr750 project, the number is cb750e 2541593
I think it is either a k6 or k7, hopefully somebody will know the engine codes to enlighten me ! regards Dave

CB750 / Re: carb insulators

« on: February 24, 2010, 11:23:55 PM »

Thanks pete,
i hope somebody can verify your info as it would be great if you can double up on them. Nothing on e-bay so far just k6 insulators. regards Dave

CB750 / carb insulators

« on: February 24, 2010, 10:50:22 PM »

Hi,
i have just joined the forum so i will introduce myself and ask for help at the same time ! My name is Dave and i have a cr750 replica based on a k7 and a RG500 suzuki for my sins. I have had the 750 for about 14 months and have been sorting the detailing of it during this time. As the bike has had a cylinder head leak while attending to this i thought i would renew the carb inlet rubbers as they had seen better days. The problem is where do i get them ? I have tried David Silvers and csml and they only have the insulators for no 1 and 3 cylinders as the other ones are obselete. The part numbers are 16212405000 no2 cylinder + 16214405000 no 4 cylinder.
Are there any insulators you can use from another model if these are not available ? I will try and post some pics of the bike as soon as i figure out the procedure and keep you informed of the top end rebuild as it progresses