50mm throttle body - Yamaha Raptor Forum
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post #1 of 11 (permalink) Old 03-24-2019, 12:22 PM Thread Starter
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50mm throttle body

Hello, just out of curiosity, is anyone running a 50mm throttle body? When is it a good time to upgrade to a 50? Any gain/loss?
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post #2 of 11 (permalink) Old 03-26-2019, 01:06 AM
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Cuervo racing once posted;
47mm for 50-77HP.
50mm for 70-80HP.
54mm for 77-97HP.

The bigger the TB the less velocity you have for bottom end power.

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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post #3 of 11 (permalink) Old 03-26-2019, 01:20 PM Thread Starter
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Yeah that sounds about right. I can't find anyone running a 50mm
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post #4 of 11 (permalink) Old 09-30-2019, 06:07 AM
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Does the head need to be ported to run the 50mm throttle body like the 54mm?
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post #5 of 11 (permalink) Old 10-13-2019, 07:17 AM
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Why run a 50?......go big or go home.lol

734 09 Raptor
Meglodon by Bo,KW springs Ferrea valves , Web 4 Cam, 54mm TB, 105.5mm CP cylinder, 14:1 CP, Barkers Inframe, Dynatek Coil, PC V, Dynatek Programable ignition
CCP stabilizer,+5 swinger,Boss Noss Sys, Direct Drive Lock-up, KDS Evac valve,HID Light conversion,SPAL fan
Tuned by EHS Racing 78hp 55Tq
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post #6 of 11 (permalink) Old 10-13-2019, 01:04 PM
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Quote:
Originally Posted by Oscar Canizales View Post
Does the head need to be ported to run the 50mm throttle body like the 54mm?
Porting is never necessary, but your wasting your money adding performance parts that won't reach their full potential. You'll find few people running a 50mm because it is easily outgrown. A 47mm and 54mm overlap the powerbands making the 50mm almost a waste of money.

Always check the rubber intake to see if it needs porting to the TB.

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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post #7 of 11 (permalink) Old 11-05-2019, 02:13 PM
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I asked Cuervo Racing for a map and they offered me the 47mm.
In fact, it is a lot more expensive than here in France.
This company looks super professional.
They sent me a free map.
As a thank you I take the Mod 47mm.
You think I should take bigger?
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post #8 of 11 (permalink) Old 11-05-2019, 05:57 PM
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Quote:
Originally Posted by Nicolas Petiteaux View Post
I asked Cuervo Racing for a map and they offered me the 47mm.
In fact, it is a lot more expensive than here in France.
This company looks super professional.
They sent me a free map.
As a thank you I take the Mod 47mm.
You think I should take bigger?
What are your modifications?

cam?
intake?
exhaust?
compression?
porting?
valve size?

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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post #9 of 11 (permalink) Old 11-06-2019, 12:01 PM
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Hotcams 3
Proflow TwinairAIr
FMF 4.1 +Powerbomb colletor
PowerCommander 5 without autotune
the rest of the machine is of origin.raptor 2018
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post #10 of 11 (permalink) Old 11-06-2019, 12:47 PM
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Quote:
Originally Posted by Nicolas Petiteaux View Post
Hotcams 3
Proflow TwinairAIr
FMF 4.1 +Powerbomb colletor
PowerCommander 5 without autotune
the rest of the machine is of origin.raptor 2018
I would say you're in the -60HP range, so go with the 47mm throttle body. That is a factory throttle body machined 3mm bigger and a new throttle plate to match. You'll need a map adjustment to match.

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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