hi guys just got a blast for the wife last week and doing some tweeks on it and i see alot of discusshion on the shiming and sportser needle i was wondering which u guys found gave the best results her bike is gona stay stock as far as exuast and airflow goes i just want to run as good as it can for her .i have used the dyno jet kit on my 650 klr whiich used the same kihen carb cv 40 and that kit has worked flawless installed and never touched again and i like the manual choke aspect of the klr has anyone tried concerting the klr manual choke to the blast carb maybe some food for thought any replys welcome and btw iam really enjoying ur site guys great job cheers joe
shiming or sportser needle
- Thread starter arnot737
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Internet Annoyance
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I dont know diddly squat about the blasts per se, But i do a thing or 3 about carbys. Especially on old bikes. So, in general i never cared for CV type carbs as most of them, (japanese bikes) are compliant type carbs for emissions in the US and give okay service when new but over the years are a problem, especially on a 30 or 40 year old japanese 4 cyl, seems like always one doesnt want to behave, and they are crazy expensive to rebuild. Thats why many people if they can swap them out for a Mikuni NON-CV (see Mikes XS650 page for common kits). So that being said, I dont live CVs, However on my wifes Sportster (year 2000) I have grudgingly come to like that CV.
I did a lot of reading on them on the XL forums, and some others, a google search for
"CV Carbs, Sportster" will bring up loads of tech articles or go to this one here,,,,,
http://xlforum.net/vbportal/forums/index.php
and you will find some REALLY good tech on making a CV work well, and when upgraded and dialed in, make a damn good carb, One vendor many people really like is CVPerformance
http://www.cv-performance.com/
I have ordered their kits, and fitted them to several bikes now, and very pleased with their products and excellent tech support, the owner has personally emailed me several times and was very helpful, You will also find him active on several forums, and is very supportive.
I think that might be a good place to start.. IF running a CV, On my Tuber Buell, I am switching it over to a Mikuni kit, as I prefer a non CV carb for certain applications, And I still wont run a CV on many bikes, but the Harley CV carb CAN be made into a pretty decent carb and Im happy with the CV on my wifes Sporty. So is she.
so there,,,,,,,thats my $0.02. worth what you paid for it.
I did a lot of reading on them on the XL forums, and some others, a google search for
"CV Carbs, Sportster" will bring up loads of tech articles or go to this one here,,,,,
http://xlforum.net/vbportal/forums/index.php
and you will find some REALLY good tech on making a CV work well, and when upgraded and dialed in, make a damn good carb, One vendor many people really like is CVPerformance
http://www.cv-performance.com/
I have ordered their kits, and fitted them to several bikes now, and very pleased with their products and excellent tech support, the owner has personally emailed me several times and was very helpful, You will also find him active on several forums, and is very supportive.
I think that might be a good place to start.. IF running a CV, On my Tuber Buell, I am switching it over to a Mikuni kit, as I prefer a non CV carb for certain applications, And I still wont run a CV on many bikes, but the Harley CV carb CAN be made into a pretty decent carb and Im happy with the CV on my wifes Sporty. So is she.
so there,,,,,,,thats my $0.02. worth what you paid for it.
jetlee
Well-known member
Shims and don't touch the choke.
jetlee
Well-known member
.47 is almost a half inch. You need .05", just under 1/16" thickness.
howdy guys joe here well today i got bored waiting for my super boot and jets from dan so explored my wifes blast and drilled out the fa plug and shimed the needle to .047 its as close as i could get anyways that alone made a huge differance in throttle responce o mean huge so its back together now .iam almost debating weather or not to do the jets wondering if it will improve any more .anyways just thought i would share the progress with yas cheers joe
