Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
hey m just wondering what way you turn the mixture screw on a 4mv rochester, in for lean or out for lean
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
in for lean....................50/50????
its been a few years since i had one.
take it to a good carby performance shop.
will cost you half an hour of labour and will get best results.
VN Calais, V8 Auto, Blown etc etc
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
turn mixture screws right in then wind them back 2and a half turns thats almost a perfect mix then you can work on main idling screw for a notable difference advance dizzy 1 notch 12 degrees
|
|
|
|
|
|
Rank: Member
Groups: Registered
Joined: 12/10/2005(UTC)
Posts: 495
|
You can easily get 20 more HP out of a Rochester 4bbl. The secrets lie in two areas of concern, #1 The primary jet sizes, and #2 the linkages that open the secondaries. With upping the primary jets to 30 thou and manipulating the secondary linkages to gai
|
|
|
|
|
|
Rank: Member
Groups: Registered
Joined: 2/08/2005(UTC)
Posts: 13
|
Hi
I have two documents on Rochester carbs one is 11 pages, the other 27. Email me on email_2 at iprimus.com.au if anyone is interested.
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
If it's not running right then there is so much more to do than just adjust the idle mixture screws (in for lean, out for rich). The throttle discs must expose only about 40 thou of the vertical transition slot at idle (no more!), the float level must be
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
