Rivera Intake with Dual Mikuni Carbs.
#1
01-22-2013, 05:23 PM
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Rivera Intake with Dual Mikuni Carbs.
I've heard mixed feelings regarding this setup. Some say they are hard to get running perfect, some say better with a single Mikuni etc, etc.
Anybody who has tried this setup, runs it now or knows anything about this setup please enlighten me.
A bike with it below & it's on my Ebay watch list
http://cgi.ebay.com/ebaymotors/1998-...orcev4exp=true
Anybody who has tried this setup, runs it now or knows anything about this setup please enlighten me.
A bike with it below & it's on my Ebay watch list
http://cgi.ebay.com/ebaymotors/1998-...orcev4exp=true
#2
01-24-2013, 04:42 PM
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Nevermind, i contacted Rivera by email and they answered my questions. When asked to prove or show evidence that the Rivera Intake & dual Mikuni carbs performed better then a good single, the reply was.......................
Stay with a single,unless you are going for the look.
Thank You
Mike Seright
Warehouse Operations Manager
End of story.
Stay with a single,unless you are going for the look.
Thank You
Mike Seright
Warehouse Operations Manager
End of story.
#3
01-25-2013, 04:40 PM
Nevermind, i contacted Rivera by email and they answered my questions. When asked to prove or show evidence that the Rivera Intake & dual Mikuni carbs performed better then a good single, the reply was.......................
Stay with a single,unless you are going for the look.
Thank You
Mike Seright
Warehouse Operations Manager
End of story.
Stay with a single,unless you are going for the look.
Thank You
Mike Seright
Warehouse Operations Manager
End of story.
#4
01-26-2013, 10:11 AM
Multiple carburetors or throttle bodies will all ways outperform one large single if there on separate manifolds aka one per barrel on normally aspirated engines. It has more to do with velocity then CFM to get fuel atomization right. IMAO sticking 20 carbs on a common manifold has more to do with the cool factor then performance.
Last edited by rjhill; 01-26-2013 at 10:13 AM.
#5
01-26-2013, 02:33 PM
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Those dual Mikuni's really cost folks a ton of dough, for nothing, and in most cases lost horsepower, from what we had seen on our dyno.
On the other hand, we developed/sold a "Cross-Ram" manifold, that used either 2 S&S B cabs, or 2 S&S D carbs, that worked EXTREMELY WELL.
Example;
California-based AHDRA racer, PWMorris, over on the HTT message board used that 'Double D" set-up to steal the show at dyno shoot-out years ago, on a 131"er, and it was featured on Cobin's "Ride" TV program.
Rick Muse, of Salem NH, used the B version on his record-setting 107" XL, that went 8.58 @ 152 plus mph, @ Maple Grove Raceway, PA.
We used the B version on our AHDRA 108" racer years ago as well.
It falls into the catagory of "Proper Prior Planning, Prevents Pi$$-Poor Procedure".
Scott
On the other hand, we developed/sold a "Cross-Ram" manifold, that used either 2 S&S B cabs, or 2 S&S D carbs, that worked EXTREMELY WELL.
Example;
California-based AHDRA racer, PWMorris, over on the HTT message board used that 'Double D" set-up to steal the show at dyno shoot-out years ago, on a 131"er, and it was featured on Cobin's "Ride" TV program.
Rick Muse, of Salem NH, used the B version on his record-setting 107" XL, that went 8.58 @ 152 plus mph, @ Maple Grove Raceway, PA.
We used the B version on our AHDRA 108" racer years ago as well.
It falls into the catagory of "Proper Prior Planning, Prevents Pi$$-Poor Procedure".
Scott
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HILLSIDE MOTORCYCLE & MACHINE, INC.
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5225 SOUTH MAIN ST., MUNNSVILLE, N.Y. 13409
Sales/Support 315-495-6650
www.hillsidecycle.com
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Complete H-D Machine Shop
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HILLSIDE MOTORCYCLE & MACHINE, INC.
HARLEY-DAVIDSON SPEED & SERVICE CENTER
5225 SOUTH MAIN ST., MUNNSVILLE, N.Y. 13409
Sales/Support 315-495-6650
www.hillsidecycle.com
Walk-in Retail Showroom
Complete H-D Machine Shop
Case & cylinder boring
Complete Cylinder Head Shop
High-Performance Engine Kits
Crank Rebuilding
Direct Link & PowerVision Tuning
Goodson HD Tooling Manufacturer
Maxton Mile World Record
4500 sq ft. facility
OVER 35 YEARS OF H-D ENGINE BUILDING.
See us on Facebook.
#6
01-28-2013, 09:00 PM
Join Date: Jan 2013
Location: Whangarei. New Zealand.
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Those dual Mikuni's really cost folks a ton of dough, for nothing, and in most cases lost horsepower, from what we had seen on our dyno.
On the other hand, we developed/sold a "Cross-Ram" manifold, that used either 2 S&S B cabs, or 2 S&S D carbs, that worked EXTREMELY WELL.
Example;
California-based AHDRA racer, PWMorris, over on the HTT message board used that 'Double D" set-up to steal the show at dyno shoot-out years ago, on a 131"er, and it was featured on Cobin's "Ride" TV program.
Rick Muse, of Salem NH, used the B version on his record-setting 107" XL, that went 8.58 @ 152 plus mph, @ Maple Grove Raceway, PA.
We used the B version on our AHDRA 108" racer years ago as well.
It falls into the catagory of "Proper Prior Planning, Prevents Pi$$-Poor Procedure".
Scott
On the other hand, we developed/sold a "Cross-Ram" manifold, that used either 2 S&S B cabs, or 2 S&S D carbs, that worked EXTREMELY WELL.
Example;
California-based AHDRA racer, PWMorris, over on the HTT message board used that 'Double D" set-up to steal the show at dyno shoot-out years ago, on a 131"er, and it was featured on Cobin's "Ride" TV program.
Rick Muse, of Salem NH, used the B version on his record-setting 107" XL, that went 8.58 @ 152 plus mph, @ Maple Grove Raceway, PA.
We used the B version on our AHDRA 108" racer years ago as well.
It falls into the catagory of "Proper Prior Planning, Prevents Pi$$-Poor Procedure".
Scott
Cheers.
#7
04-04-2019, 11:16 PM
Hi, ive actually had great success wuth the duel 45 set up.
My engine is a 106ci, kendal johnson heads ,red shift 656 cam and v&h pro pipe headers .installing and dyno tuned duel runner got me 130hp and 136fpt over 125hp and 124fpt dyno tuned s&s super g with thunderjet......huge increase in tq , im currently building a 120ci and plan to run the same set up.also port matched intake and cleaned up intake manifold insides
My engine is a 106ci, kendal johnson heads ,red shift 656 cam and v&h pro pipe headers .installing and dyno tuned duel runner got me 130hp and 136fpt over 125hp and 124fpt dyno tuned s&s super g with thunderjet......huge increase in tq , im currently building a 120ci and plan to run the same set up.also port matched intake and cleaned up intake manifold insides
Last edited by Fxr1991; 04-04-2019 at 11:22 PM.
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#8
04-07-2019, 11:57 PM
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#9
04-08-2019, 12:03 PM
for the street, all it would be is bling factor. multiple carbs are not rocket science if like was brought out, dual plane.
the fueling of the 45* separation angle causes a reverse pulse which can have negative impact under the right circumstances with a single plane. due to this, a multiple carb is difficult to syn.
the fueling of the 45* separation angle causes a reverse pulse which can have negative impact under the right circumstances with a single plane. due to this, a multiple carb is difficult to syn.
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