Carb topend screw tuning???????

[Exile]

What or how much should I start the top end screw out for a newly bigbore sj freestyle,(thus how many turns out to start tuning with??)everyelse is sorted...

Thanx in advance.
Exile.

 

[Matt_E]

I always start at 2 turns out and tune from there.

If you end up at less than 1 turn out or more than 2 turns out, change your main jets.

 

[FX-6.9 Boy]

all depends on what your engine is, jet size, flame arrestors....need more info to give some valid suggestions...

 

[Exile]

Who can I contact to help me with my carbs for the following setup:

Engine:
700cc 760cc bore
Boyesen Reeds
Factory Bpipe
Blowsion Head 195 compression
Lightened flywheel stock
Stock cdi
Cylinder Freestyle Porting
Stock Crank
Dual 48mm mkuni carbs with riva flame arrestor and riva manifold...anything else needed to please help me?

Thank You for your time!
Exile.

 

[Exile]

Its for low and top screws!?

 

[waxhead]

what style of 48s
i mean who made / modified them them

if we know that its a pretty easy tune

 

[Exile]

It says on the carbs mkuni,but on my invoice it says dual 48s with no manufacturer? I was under the impression mkuni only went up2 36....

 

[Exile]

How can I check whether its the hsr48.....

 

[waxhead]

the hsr is a different style carb
put some pics up here online

 

[Exile]

So in short its dual hsr48 mkuni,what should I start of with the lowend screw and then topend screw...? I just want to do it correct and not blow an motor or damage it in any way.....

 

[waxhead]

if you have an hsr carb on there you will have issues
they are a motorbike carb

 

[Exile]

Pics coming up!





:banghead: :banghead: :boggled: :hail:

 

[Exile]

This isnt hsr48s??????

 

[waxhead]

they are 44s or 46s with protec moflow adaptors on the top

 

[Exile]

Would you be able to steer me in the right direction with screws? me the untrained eye!

 

[waxhead]

2.3 n/s
120-125 low
105 high
80 gram spring

 

[Exile]

n/s fine
80 gram spring fine
low? turns 1/8ths.... or 1/4?... technical jargon.
Sorry 4 the trouble.

 

[waxhead]

about 1 turn on each to start

 

[Exile]

K,thanx...thats 1turn out from all the way in low speed screw and high screw.
Ur a life saver!
Exile.

 

[waxhead]

yes
and your welcome