robbydee
|
| posted on 27/3/06 at 07:58 PM |
|
|
change from 40`s to 45`s?
currently running a nice spec pinto with vulcan max flow 3 head fr33 cam, lightened balanced etc,
would i see much improvement from changing to weber 45`s from my current 40`s which are currently on a 34 choke.
anyone under taken such a change, ?
|
|
|
|
|
Pezza
|
| posted on 27/3/06 at 09:09 PM |
|
|
Properly set up 40's are more than adequate for anything up to 200bhp, doubt you'll see any gains whatsoever fitting 45's
|
|
|
mookaloid
|
| posted on 27/3/06 at 09:09 PM |
|
|
You could potentially gain a bit of top end power - but possibly lose a bit of low to mid range tractibility.
Actually it is the choke sizes which really make the difference, you could just put larger chokes in your 40's for a moderate increase.
I think if I was doing it I would go for bike carbs rather than 45's - you should get a better overall performance mid range and top end and
better running, idling etc.
Cheers
Mark
|
|
|
robbydee
|
| posted on 27/3/06 at 09:36 PM |
|
|
RECOMMEND ANY BIKE CARBS?
|
|
|
givemethebighammer
|
| posted on 27/3/06 at 09:41 PM |
|
|
Yamaha R1, ZX9R, Fireblade / Blackbird
R1's seem to be a popular choice. Talk to Steve Bogg at Bo Bros he'll point you in the right direction.
http://www.boggbros.co.uk/contact.html
|
|
|
robbydee
|
| posted on 27/3/06 at 10:08 PM |
|
|
these are still carbs right ? not injection.. so why are they so much better than car carbs?
|
|
|
Dusty
|
| posted on 31/3/06 at 11:48 PM |
|
|
They are called constant velocity carbs and have a jet with a needle attached to a vacuum slide like old SU carbs but done by the Japanese they work
very smoothly and accurately over the entire rev range. As good as 45's at the top end but better low to mid range, better economy and no
fiddling all the time like you get with 45's.
|
|
|
