PSI or the XXX ?

117bigdog · 12-08-2007, 12:03 AM

Looking on here there are some of you going with the XXX and some with the PSI carb. Give me some advantages and disadvantages on the carbs you have tried.

Raywood · 12-08-2007, 12:14 AM

PRICE!

117bigdog · 12-08-2007, 12:17 AM

Quote:

Originally Posted by Raywood

PRICE!

meaning? You have one or none at all?

Scott041804 · 12-08-2007, 12:26 AM

Honestly i never tried the xxx carb but i know that the PSI had a mininum of 10 percent gain on hp and torque.

117bigdog · 12-08-2007, 12:58 AM

I guess that would be over a stock carb? I have a S&S with a thunder jet and can't see it gaining that much more.

go4dave · 12-08-2007, 01:01 AM

I already bought the TazXXX,, and now i just gotta' tune it. So, i'll see what it gains,, and I'll post up the dyno sheets, so everyone can see them.

117bigdog · 12-08-2007, 01:18 AM

Is the 91hp and 101 torque before carb and no other work?

BubbleHead · 12-08-2007, 01:28 AM

I'd go with the XXX myself, seems like more bang for the buck.

go4dave · 12-08-2007, 01:30 AM

[QUOTE] Is the 91hp and 101 torque before carb and no other work? [QUOTE]

the 91hp/101lbs is box stock. On a Dyno-Jet dyno. It was 93* on a nice fall day, 2700ft elevation, 11% humidity, 27.88 barmatric pressure. Air/Fuel was running a touch lean on the top end. SAE: 1.08

117bigdog · 12-08-2007, 01:36 AM

so when you get it running and get it dyno'd will the carb be the only upgrade. just trying to see what that carb makes with a before and an after dyno run.

go4dave · 12-08-2007, 01:38 AM

Quote:

Originally Posted by 117bigdog

Is the 91hp and 101 torque before carb and no other work?

the 91hp / 101lbs is box stock. The Dyno is a DynoJet. It was a Fall Day. Temp was 93 degrees, Elevation of 2700ft, 11% humidity, 27.88 barmatric pressure, SAE: 1.08 Air/Fuel was running a little lean on the top end. 3 runs,, all within a fraction of eachother. At that time, i had about 800 miles on it.

Yes,, the only difference will the CARB. a few more miles,, and of course the Temp/Humidity/Barmetric Pressure. But those can be all calculated afterwards to give same day numbers.

117bigdog · 12-08-2007, 01:44 AM

great. Can't wait to hear what the new numbers will be.

Scott041804 · 12-08-2007, 01:59 AM

Quote:

Originally Posted by 117bigdog

I guess that would be over a stock carb? I have a S&S with a thunder jet and can't see it gaining that much more.

That is exactly what i had a G carb with the bigger T-Jet nozzle and i actually gained about 12 percent power!!!

117bigdog · 12-08-2007, 02:07 AM

I'm trying to figure out if switching to the taz carb from XXX would I gain more than what I have. And then seeing the PSI well I'm not sure now. But I see xxx is cheaper.

117bigdog · 12-08-2007, 02:12 AM

Quote:

Originally Posted by Scott041804

That is exactly what i had a G carb with the bigger T-Jet nozzle and i actually gained about 12 percent power!!!

wait you had the S&S G with thunderjet, then when you went to the PSI you gained 12 % ?

View Poll Results: Which carb would you go with on your bike?
XXX carb	55	64.71%
PSI carb	19	22.35%
other	11	12.94%
Voters: 85. You may not vote on this poll

12-08-2007, 12:03 AM	#1 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	PSI or the XXX ? Looking on here there are some of you going with the XXX and some with the PSI carb. Give me some advantages and disadvantages on the carbs you have tried.

12-08-2007, 12:14 AM	#2 (permalink)
Raywood That's MISTER DICK! Name: Ray Join Date: Apr 2007 Location: Bremerton, WA Posts: 13,471 My Bike(s): 05 BD Chopper My Biker Photos Rep Power: 5	PRICE! __________________ 2005 Big Dog Chopper Rode hard and put away wet RATT Bike = "Rode All The Time"

12-08-2007, 01:01 AM	#6 (permalink)
go4dave Rigga' Please Join Date: Nov 2007 Location: Las Vegas Posts: 109 My Bike(s): 2004 Mastiff My Biker Photos Rep Power: 3	I already bought the TazXXX,, and now i just gotta' tune it. So, i'll see what it gains,, and I'll post up the dyno sheets, so everyone can see them. __________________ 2004 Mastiff 91 Hp/101 lbs at the Las Vegas speedway that's just my un-documented, no credentials, i said so, foaming at the mouth, dumb ass opinion

12-08-2007, 01:28 AM	#8 (permalink)
BubbleHead Head Dog Name: Tim Join Date: Feb 2007 Location: Kyle, TX Posts: 3,841 My Bike(s): '07 K-9 SS My Biker Photos Rep Power: 5	I'd go with the XXX myself, seems like more bang for the buck. __________________ Tim '07 K-9 Orange Blast w/Black Racing Stripes

12-08-2007, 12:26 AM	#4 (permalink)
Scott041804 Member Join Date: Dec 2007 Posts: 56 My Bike(s): Big Dog My Biker Photos Rep Power: 0	Honestly i never tried the xxx carb but i know that the PSI had a mininum of 10 percent gain on hp and torque.

12-08-2007, 12:58 AM	#5 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	I guess that would be over a stock carb? I have a S&S with a thunder jet and can't see it gaining that much more.

12-08-2007, 01:18 AM	#7 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	Is the 91hp and 101 torque before carb and no other work?

12-08-2007, 01:30 AM	#9 (permalink)
go4dave Rigga' Please Join Date: Nov 2007 Location: Las Vegas Posts: 109 My Bike(s): 2004 Mastiff My Biker Photos Rep Power: 3	[QUOTE] Is the 91hp and 101 torque before carb and no other work? [QUOTE] the 91hp/101lbs is box stock. On a Dyno-Jet dyno. It was 93* on a nice fall day, 2700ft elevation, 11% humidity, 27.88 barmatric pressure. Air/Fuel was running a touch lean on the top end. SAE: 1.08 __________________ 2004 Mastiff 91 Hp/101 lbs at the Las Vegas speedway that's just my un-documented, no credentials, i said so, foaming at the mouth, dumb ass opinion

12-08-2007, 01:36 AM	#10 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	so when you get it running and get it dyno'd will the carb be the only upgrade. just trying to see what that carb makes with a before and an after dyno run.

12-08-2007, 01:44 AM	#12 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	great. Can't wait to hear what the new numbers will be.

12-08-2007, 02:07 AM	#14 (permalink)
117bigdog Bring It! Join Date: Nov 2007 Location: ft. lauderdale florida Posts: 346 My Bike(s): 2005 bigdog chopper My Biker Photos Rep Power: 3	I'm trying to figure out if switching to the taz carb from XXX would I gain more than what I have. And then seeing the PSI well I'm not sure now. But I see xxx is cheaper.

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