Art's Semi-BlackJacked SX-R mods

[Shonuff]

I just got my carbs back from Art.

I was really hoping they would be sporting a friggin sweet BLACKJACK ring around them but he said he doesn't do that with the SX-R carbs. He leaves the tops stock so the OEM intake can be used without the trumpets.

They are 46mm taperbored to 40mm (stock). I'll be running Tau Ceti tops.

 

[Crab]

Let us know how they perform.

 

[Tanman]

ya would like to hear how they do. Art seems like a great guy I met him when I was down there. Talking about havin some impeller work done. but maybe carbs as well!

 

[oxnard111]

bluegtate was down at Art's shop last week. he said he got to see all kinds of cool stuff including the new modded dual 38's. he does something very similar to your SXR carbs.

 

[Bigfish]

Was this what you wanted(blackjacked SXR),those 38s are for my girls sj glad they look good.

 

[Shonuff]

Yes.

 

[global warmer]

that's interesting!i just picked up a set of blackjack 44's and a 44/46 r+d manifold,want to try them on my wet piped sxr,was wondering am i gonna lose too much low end response and gain top end?anyone had any experience with these on the kwak,

 

[cmeripper26]

I run the wet pipe with the NOVI 42's and as long as you find the right tuning on your carbs and your pipe you won't lose the top end speed. it's just finding a happy medium between the pipe and carb tuning.

 

[Bigfish]

I'm running duel 46 s on my sxr there great give Art a call and get a good starting point and you will be very happy with the blackjacks.

 

[Shonuff]

I had an issue today at my test-and-tune with loading up badly on the bottom.

Art had it jetted at 82.5/155 with 2.5 N&S and 95g spring.

I have always kept my idle low and so when I got the carbs installed, the first thing I did was drop the idle from Art's 1200rpm setting to about 300.

I spoke with Gil at length tonight and he explained that lowering my idle raised my manifold pressure creating a rich condition. Thanks to Gil for all the help, btw.

I'm going to drop to a 2.0 N&S, 80g spring, 80 pilots, raise my idle to about 1000rpm and head back out. Hopefully, I'll have somewhere near a 22-25 psi popoff.

The water was 55 degrees. Brrrrrr.

 

[madscientist]

70 deg + on y water and close to 80 air temp.

see you in a couple of weeks

 

[Kennay]

I had an issue today at my test-and-tune with loading up badly on the bottom.

Art had it jetted at 82.5/155 with 2.5 N&S and 95g spring.

I have always kept my idle low and so when I got the carbs installed, the first thing I did was drop the idle from Art's 1200rpm setting to about 300.

I spoke with Gil at length tonight and he explained that lowering my idle raised my manifold pressure creating a rich condition. Thanks to Gil for all the help, btw.

I'm going to drop to a 2.0 N&S, 80g spring, 80 pilots, raise my idle to about 1000rpm and head back out. Hopefully, I'll have somewhere near a 22-25 psi popoff.

The water was 55 degrees. Brrrrrr.

No way I would think about completely rejetting without talking to the BJ wizard himself. Especially not something like changing the needle and seat.

With these aftermarket carbs... Any of them, once you start doing what you think is right, you most of the time find yourself in the crowd of people screaming

"My ______ (Novi/ FS/ BJ/ ect..) were hard as crap to tune in. They sucked because I couldn't get them to work right."

Just work with Art. Yall will get it right.

 

[Matt_E]

I had an issue today at my test-and-tune with loading up badly on the bottom.

Art had it jetted at 82.5/155 with 2.5 N&S and 95g spring.

I have always kept my idle low and so when I got the carbs installed, the first thing I did was drop the idle from Art's 1200rpm setting to about 300.

I spoke with Gil at length tonight and he explained that lowering my idle raised my manifold pressure creating a rich condition. Thanks to Gil for all the help, btw.

I'm going to drop to a 2.0 N&S, 80g spring, 80 pilots, raise my idle to about 1000rpm and head back out. Hopefully, I'll have somewhere near a 22-25 psi popoff.

The water was 55 degrees. Brrrrrr.

If I were you, I would talk to Art and see what he recommends. Just a thought.

 

[dbrutherford]

Well if you get them working right and you like them. Send them to me and I will gladly send you a set of stockers to let you try out!

 

[Scorn800]

Why did you not like how they came set up?
was it just the high idle?
I would NOT re-jet without talking to the man that built them

 

[Bigfish]

If anyone is looking for a set the ones in the pic are for sale.post#5

 

[madscientist]

whats the deal w/ the pinched pipe jetting and jb weld?

i would have expected bomb sights ?

how much for that process?

 

[Shonuff]

If anyone is looking for a set the ones in the pic are for sale.post#5

Did she lose her carbs already?

whats the deal w/ the pinched pipe jetting and jb weld?

i would have expected bomb sights ?

how much for that process?

$170 per carb :27:

 

[Bigfish]

No she is getting the 38s he was talking about for her sj.The carbs that are for sale are for a sxr i was going to put them on my x2 but decided to go with a blackjack 46.

 

[WET BOX]

I may be out of the loop, but whats the scoop on these BJ carbs.

They seem more popular recently.

Performance vs other carbs?

Is it more of a performance bargain or a hot setup?

Thanks dudes for the info! :Banane35: