CRS Carbs.

The carbs I ordered from Jim Arrived today. Very nice, Thanks Jim.
Saving for a 750 FA head to bolt them to.
JUG

you will be very pleased with them, I'm still sorting mine out, running a bit rich but they are worth every cent.

Both 31 and 33mm CRS carbs are in stock now.

Madass
It should be easy to lean them out by dropping the needle if you have YY8s. Let us know what needle position you are using.

Jim I have moved the clip from the 2nd bottom groove to the 2nd top on the yy8's, I'll try and get some testing done today, not good weather at the moment, my air filter element is a reduced width of the standard one supplied by RGM, maybe thats a bit restrictive .

How much down draught will they support? More than Amal mk 2?

Not knowing much about these. Can anyone give actual review who has run them? Preferably on the street? I am looking into them but wasn't too sure on street manners?

I have been running a pair of 33mm CRS for approx. 3000 miles now. They are superb. As far as I can see there are no downsides to them. The bike starts easily, once slightly warmed up idles perfectly, goes like the clappers & doesn't need to be tickled. They are very well made & as they are linked together should stay in sync. a lot longer. Also, tuning parts don't cost the earth. With the mods. I have done to the throttle mechanism & idle adjuster they fit perfectly. The JS Motorsports carbs have similar mods. so should fit straight out of the box. The only downside for you might be the price. A set of 32mm Amals are in my opinion almost as good if properly set up preferably on a rolling road & a bloody sight cheaper.
As they say (whoever they are) you pays your money & takes your choice.

Has anyone tried mating the CRS carbs with the black air filter box of late models?

-Knut

i have just installed a set of 33s and i can assure they were worth the wait . Starts very easily idles well and pulls very well at any speed . i am still sorting out my maney belt drive and the Madass brake kit i installed at the same time ,decided to do some upgrades i know doing them one at a time would make so much more sense. but no one ever accused me of being smart. more reports to follow . cheers

Matchless said:

I have been running a pair of 33mm CRS for approx. 3000 miles now. They are superb. As far as I can see there are no downsides to them. The bike starts easily, once slightly warmed up idles perfectly, goes like the clappers & doesn't need to be tickled. They are very well made & as they are linked together should stay in sync. a lot longer. Also, tuning parts don't cost the earth. With the mods. I have done to the throttle mechanism & idle adjuster they fit perfectly. The JS Motorsports carbs have similar mods. so should fit straight out of the box. The only downside for you might be the price. A set of 32mm Amals are in my opinion almost as good if properly set up preferably on a rolling road & a bloody sight cheaper.
As they say (whoever they are) you pays your money & takes your choice.

Click to expand...

(850-Slimline-Dunstall lightened crank and rockers-PW3 cams-Dunstall full fairing and silencers-velocity stacks)

Six months ago, tired of not being able to start up my bike reliably, I decided to replace my 32mm Amals by a twin VM32 Mikuni kit (from Allen Perf in the Uk).
This kit is made for a standard 750, so I had to change the main jets and adjust the needles. The bike was running 'fine' but could have been stronger mid and top. At that point, I had 3 tracks weekends lined up in France, so I decided to play safe and fit the Amals back on the bike, as I could easily start it with rollers on the track.
I did leave the Allen/Mikuni splayed manifolds on the bike as it made it a lot easier to install and remove both sets of carbs.
Then surprise. :mrgreen:
The bike starts on first (or second) kick with the Amals. Cold or hot. EVERYTIME.
Needless to say, the Mikunis are taking dust on a shelf since then.
The bike has been clocked at 210km/h (130Mph) at the end of the Dijon circuit straight. On B-roads and highways, riding above legal limits the bike makes just under 6 liters per 100km wich is over 40Mpg I think.

Conclusion? Proper manifold design can do a LOT to improve the way carbs (and engine) perform. Just my 2c.