I'm single again! My new brap, Single BlackJack 46mm 62T setup

Here you go Willy

46mm BlackJack new directly from JetWorks - $385

Riva Conversion manifold used - $100 shipped from ebay

OEM 44 Flame Arrestor - $35 shipped from ebay

Thrust Innovations FA adapter - $95 shipped

Gaskets - $5

Grand total = $620

I sold my old carb setup for $365 shipped I think... so not all of the $620 was out of pocket.

not bad price would have been even 100 cheaper using a aftermarket fa
 
I paid $340 shipped for a pair of clean 46 redtops on a R&D intake manifold..... they hit hard as hell, and were easy to tune..... I think its rediclous that people are spending twice the money for less power, and one less carb.

To each his own.
 
I paid $340 shipped for a pair of clean 46 redtops on a R&D intake manifold..... they hit hard as hell, and were easy to tune..... I think its rediclous that people are spending twice the money for less power, and one less carb.

To each his own.

i agree on the dual carb set up. but try and buy a single novi or afullspec :bigeyes:
 
i agree on the dual carb set up. but try and buy a single novi or afullspec :bigeyes:

I have ridden this ski with both setups on it. The Single carb did not lose any power over the daul carbs. Also when ridding in the surf it is one less carb to rebuild when you get water in your carbs. The Single carb is more tune friendly IMO. Just my .02
 
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I have ridden this ski with both setups on it. The Single carb did not lose any power over the daul carbs. Also when riddind in the surf it is one less carb to rebuild when you get water in your carbs. The Single carb is more tune friendly IMO. Just my .02

Any reputable engine builder will tell you, that you will not make as much power with a single carb :biggthumpup:

As I said I have never had any issue's what so ever with tuning duals, water ingestion, anything.... I have a homemade tupperware cover that keeps most all the water out of the filters. :Banane01:

Im no pro, but tuning carbs is not rocket science.
 

Matt_E

steals hub caps from cars
Site Supporter
Location
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My take: I have never had to "retune" any carb once set up properly. This goes for duals and singles. So I don't really buy the maintenance/retuning line.
Obviously, setting up duals takes a good deal longer and is more of a pain.
I like the simplicity of a single. I went from Dual 44's to a single 48 and have not lost any power. I like the better throttle response of a single.
I seriously doubt that a single will result in less power at <50% throttle. I don't really care about top end.
 

oxnard111

Creative RE Purchasing
not bad price would have been even 100 cheaper using a aftermarket fa

with more water going into the engine... It makes sense.... If the ski is lying on its side in the water, and there is water in the engine compartment... water has a further distance to travel to make it inside of the carb with the OEM compared to a 360 degree open element filter.
 
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oxnard111

Creative RE Purchasing
Plus every time I rebuild, it cost half as much. Carb rebuild kits aren't cheap. $35-$50 depending on where you purchase them. I am also no pro, so I have my watercraft tech rebuild my crabs for me, he charges $20 a carb.
 

beachedflunkey

wavejunkies
Location
Virginia Beach
Ouch I'd run a single too if I rebuilt the carb with a full kit everytime. I must've sank my ski half a dozen times last year and never had to pull my dual 38's or my gas tank...
 

oxnard111

Creative RE Purchasing
Ouch I'd run a single too if I rebuilt the carb with a full kit everytime. I must've sank my ski half a dozen times last year and never had to pull my dual 38's or my gas tank...

I don't know how I'm sinking my ski any different, but I guarantee there was water in the OEM style fuel filter, and when I pulled the carbs apart I poured the left over liquid into a clear container... There was defiantly water in there also.

I am using the OEM air/water separator on the ski, with the lid cracked.

But regardless of how many times, or how often the carb needs to rebuilt, I will only be rebuilding one carb compared to two.


And junky, have you actually pulled your carbs apart since those 6 sinkings? I'd put money on that you have atleast a little water and/or corrosion inside them puppies even if you can't tell there is based on the performance of your ski.
 
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njfl

X-H2
I wonder why they dont put multiple carbs on cars then?

A four barrel carb (for example) is akin to four carbs that we use. Different throats of the carb feed different cylinders preferentially.

Throttle body fuel injection was the early means of fuel injection back in the 70's/early 80's. That had one or two fuel injectors centrally located in the body of a 4 barrel carb sitting atop the manifold. They eventually found they could make more power with a dedicated injector per cylinder (like when we have one carb per cylinder).
 

Big Kahuna

Administrator
Location
Tuscaloosa, AL
I went the single route after Todd (TLR) recommended the setup. Same setup that Rick Roy was using........ I started with a plain mikuni 44. With that setup the power was really smooth and crisp..... I later picked up one of Todd's modified 44's where the bores the bottom side out to 48mm, with this setup my ski really hit much harder, downside, the power was twitchy, not something you want to cruise with..... Also, I did have to do more tuning, more prone to needing tweaking with weather changes. Got to be a pain, after a year I picked up a set of Team Scream modified 44's..... still running them 3 years later........

My thoughts, I could honestly run either setup, the duals give me better power overall plus I can cruise a tad bit better than I could with the single, the single drank gas like a slurpie..........

As far as the blackjacks, many here have had good luck with them, A close friend (Veteran racer - who holds a few national and world titles runs them in his Superstock/Open class ski) runs them but has said that they can be a bitch to tune, once tuned they are great.......... So, here is my take, if you are running Art's motor setups, use his recommendation and they will be great carbs. Use someone elses setup you may have a headache, but this can be true with any other carbs....... stick with the carbs that your engine builder knows what the tricks are........

I am gonna eat some crow here......... I have voiced my negativity towards them, still think they are harder to tune than others, but hey, who knows, I may run a set at some point, the price point on them is really nice.......
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I find Full Specs to be an absolute bitch to tune. JMHO

Oxnard, why do you need to rebuild the carb just because there's water in there? :dunno:
 
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