Freestyle Dual 38 jetting question

[PowersportComposites]

I am about to give my fx1 all kinds of go fast part lovin'. Switching to 62t dual cases with dual 38's. Also ADA head, v force reeds, ported 61x cylinder and analog total loss. I am already running a b pipe. My question is this....what jets should i run with this setup? Thanks!

 

[wanderer1]

Ported cylinder,ported cases,piston size? Maybe consult person that did porting if it has been done. http://www.x-h2o.com/threads/19403-Carburetor-(specs)-Database-SuperJet-and-Blaster-1

 

[TheBuzzard]

i would start with 75 pilots 135 mains 2.3 seat and 95 spring. the pilot may need to go up depending on if there is a lean bog. these are just starting point #s but they will be close. the carbs will still need to come off a dozen times until its perfect.

 

[JetManiac]

i would start with 75 pilots 135 mains 2.3 seat and 95 spring. the pilot may need to go up depending on if there is a lean bog. these are just starting point #s but they will be close. the carbs will still need to come off a dozen times until its perfect.

These are oem 38s, 2.3n&s is too big and main is too small IMO

 

[MADMAT]

I would think stock everything with that, no?

 

[95FX1]

I am about to give my fx1 all kinds of go fast part lovin'. Switching to 62t dual cases with dual 38's. Also ADA head, v force reeds, ported 61x cylinder and analog total loss. I am already running a b pipe. My question is this....what jets should i run with this setup? Thanks!​

thats my new set up this year....except total loss

getting 44's shipped in to me tomorrow...

gonna run 75 and 135 to start and see where that goes..I forget what i had the 38's for N/S and spring?


Good luck PSC!

 

[JetManiac]

I am about to give my fx1 all kinds of go fast part lovin'. Switching to 62t dual cases with dual 38's. Also ADA head, v force reeds, ported 61x cylinder and analog total loss. I am already running a b pipe. My question is this....what jets should i run with this setup? Thanks!

New jets shipped today for you.

I would think stock everything with that, no?

No sir, unless you want a meltdown.

thats my new set up this year....except total loss
getting 44's shipped in to me tomorrow...
gonna run 75 and 135 to start and see where that goes..I forget what i had the 38's for N/S and spring?
Good luck PSC!

38s take a 1.5n&s stock. You dont want to run 75/135 with a/m 44s.

 

[Nuklear6]

These are oem 38s, 2.3n&s is too big and main is too small IMO

/\
X2

oem 38s need way more pop off pressure then a 2.3n/s can provide.
135 main jet would prob be fine if not for the total loss and depending on which ada domes your running, but i agree with chris 135 prob just a bit low for the total loss and added compression

Now if the 38's have been taper bored or something like that all the above is wrong. All the lumps in the throat of the carb help to create a restriction, therefor increasing the drawl (suction effect) the engine has on the carburetor

 

[TheBuzzard]

yea, my bad 2.3 is going to deliver too much fuel on the bottom. better too rich than too lean. carbs are still going to have to come off a dozen times.

 

[JetManiac]

yea, my bad 2.3 is going to deliver too much fuel on the bottom. better too rich than too lean. carbs are still going to have to come off a dozen times.

Why?

 

[TheBuzzard]

i exaggerate about the # of times they have to come off, but they do have to come off and on until its right. it may be once or it may be a dozen times. as you know, some carbs are just a bitch to tune and others dial right in.

 

[95FX1]

Edit, As to not jack this thread...

ill start my own..

 

[Byeai]

I need to get my 38s setup right also

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