Super Jet single or duals?!?!

[chriselmore_1]

ok. im tryong to decide what carb setup to run on my rn. i have a 62t/61x(cylinder) motor at 84mm. with bpipe/ 185 comp blowsion head/ i ride freestyle/freeride and am lookin for the biggest bottom hit. i have either a single carb setup with a 46sbn taperbored to 53mm, or a set of x scream modded 38s. yes i did do some searching and i got mixed answers. some say a single will hit harder off the bottom, and some say the duals will hit harder off the bottom. some say duals are better for top end and some say a single is better for top end. i dont really care about top end. was planning on trying both setups, but i would like some of your opinions. surf season is here and i would rather ride than tune.

 

[steve-uk]

theory is one carb is easier to tune and is more reliable

ATP does a full set up with intake manifold and single carb

 

[Matt_E]

Yah, but how often do you tune your carb (s), really? :biggrin:
A single is less efficient won't allow the motor its full potential. Have run both configurations on the same motors and always liked the duals better for power and the single better for any maintenance in the bilge.
Properly tuned, my duals always hit better everywhere, including bottom - but it was a small difference.
That said, I always wanted to try a single on thr ATP manifold.

 

[zeski25]

Isnt two always better than one?

 

[chriselmore_1]

Isnt two always better than one?

not in court...

 

[steve-uk]

Isnt two always better than one?

only in bed.....

 

[Mark44]

If you can properly tune a single you can tune duel carbs.

Mark44

 

[steve-uk]

Yah, but how often do you tune your carb (s), really? :biggrin:
A single is less efficient won't allow the motor its full potential. Have run both configurations on the same motors and always liked the duals better for power and the single better for any maintenance in the bilge.
Properly tuned, my duals always hit better everywhere, including bottom - but it was a small difference.
That said, I always wanted to try a single on thr ATP manifold.

i agree... hence "in theory", i know some freestyle riders who ran these with big bore skis and found them to punch more of a hit than duals

but then your probably at that point comparing two stock 38s with an annular discharging 48

i like my modded team scream set up

would be interesting to try the two set ups back to back on the same ski

 

[chriselmore_1]

yes it would! send me the complete atp setup and i would gladly post the results up for you!

 

[steve-uk]

yes it would! send me the complete atp setup and i would gladly post the results up for you!

once you send me the $$ it will be in the mail

quote from atp website

"This configuration not only makes it far easier to set up and re-jet, you also have more room in your engine compartment. You have one less hole for water to ingress and most importantly you can stay under for longer when subbing your ski"

 

[Pablo]

I tried running a single full spec 49 on a bored x1 (735cc) and freestyle ported cylinder and cases. I ran it on an ATP mani. I had a rough time with the full spec but I'm pretty sure most of the difficulty came from the engine build. I like the simplicity of one carb over two but there is a performance gain with 2. The ATP mani sure was pretty though. Real nice piece.

 

[SUPERTUNE]

Singles are just OK, they can be harder to tune in some cases with the 62T cases.
IMO duals are way better. (not stock 38's)
Aftermarket 44's or 46's with the right engine setup work really good.
One advantage to this setup as you can push up compression ratio's and sometimes a little more timing.

 

[chriselmore_1]

Singles are just OK, they can be harder to tune in some cases with the 62T cases.
IMO duals are way better. (not stock 38's)
Aftermarket 44's or 46's with the right engine setup work really good.
One advantage to this setup as you can push up compression ratio's and sometimes a little more timing.

what about the xscream modded 38s? the ones with out all the extra cast in them? like these?

 

[SUPERTUNE]

I haven't done those in years, they were good on our race limiteds, sometimes they were little hard to keep in tune with weather changes.

 

[tightithrash]

imo its basically a double edge sword. like matt says, once your carbs are dialed. you dont touch them any more. all i do to my single BJ 46 on a ATP mani is sometimes play with the lowspeed when going up and down the west coast. other than that. its good to go.

pros id say are that there is only one of everything so filter or diaphrams or N/S..... no linkage to get messed up and have your carbs be out of sync. less hoses i guess.... more room in the engine area like for instance if my Rickter had dual carbs with the engine slid back made possible thanks to my cold-fusion rickter couplers (SCHWING much better), there would be no way in hell to pull the ebox out unless you pulled the carbs. period. granted thats just on my aplication but single is a plus for that.

cons is that you dont get as much power but it kicks dual stock 38 in the sack. if you do have your carb fail its over. if you have a stuck N/S, it will never start. atleast with duals if one still works it will still start, run funky for a lil but eventually will get the stuck one unstuck. used to happen on my banshee. would only run on 1 cylinder, exhaust only out of the left pipe, give it som reves and would get the other side goin. lol.

the water ingestion is diffrent betwwen them too. if you have bad water ingestion problems well you have another issue but, the time it takes for a dual carb motor to recover after a big drink is much quicker. if you get a big gulp in the front carb, you still have another carb with pure fuel to keep it goin and out of the system quicker and less of a chance of the motor dying. with a big single, you get a good enough gulp, game over and its primer time baby. and takes a cool min to get the ski to run 100% again.

also the ATP mani is just bitchen. its a piece of art and is the best on the market. you can never go wrong with more billet

this is what i went thru atleast. .02

 

[chriselmore_1]

zack duals fit just fine in a trinity! jk. lol thanks for the info. thats exactly the kinda response i was lookin for. man im soooo on the fence now. as much as id like to try both setups, id rather ride than tune.... especially now that surf season is here.

 

[Matt_E]

Bwuahaha.

 

[tightithrash]

bahahahaaaaaaaa well.... lol that nice

motor is non setback right? hahaaaa not to go off topic but i still want to ride one. hopefully in 'Tona

 

[chriselmore_1]

to bad noone has a trinity out west. those aussie boy eat em up though

 

[Matt_E]

zack duals fit just fine in a trinity! jk. lol thanks for the info. thats exactly the kinda response i was lookin for. man im soooo on the fence now. as much as id like to try both setups, id rather ride than tune.... especially now that surf season is here.

Get the carb setup from Art and you won't have to tune. :biggthumpup:

Or just throw on a cheap single for now so you can ride and worry about spendier duals later. You're riding surf, who cares about a bit of power difference. The time you spend worrying about this should be used to ride and better your technique instead.