Boatmad.com


Reply
 
Thread Tools Display Modes
 
Old 16-10-2007, 06:30 AM   #1
Registered User
 

Join Date: Oct 2007
Posts: 2
xr2 jetting question

i have a 1998 2.0 xr2, it has a cross drilled manifold, with wh46 carbs, these are 2.4 200 hp carbs, i am having trouble getting it right, it is used for edurance racing, also what rpm range do you think it should be propped to run in, thanks
__________________

motion is offline   Reply With Quote
Old 16-10-2007, 10:55 AM   #2
Senior Member
 
OCRDA's Avatar
 
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France

Join Date: Jan 2005
Location: Devon
Posts: 3,092
Carbs

I have a set of Single Float XR2 Carbs if they are any good to you !! Must be worth £100 ish !!

Bob
__________________

__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
OCRDA is offline   Reply With Quote
Old 16-10-2007, 11:58 AM   #3
numbskull
 
Jon Fuller's Avatar
 
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast

Join Date: Mar 2004
Location: South
Posts: 15,959
Quote:
Originally Posted by OCRDA View Post
I have a set of Single Float XR2 Carbs if they are any good to you !! Must be worth £100 ish !!

Bob
Ya man is in Arizona (Lake Havasu), so shipping needs to be taken into account.
__________________
.

"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
Jon Fuller is offline   Reply With Quote
Old 16-10-2007, 05:32 PM   #4
Traveling
 
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar

Join Date: Sep 2004
Location: Alderholt
Posts: 4,223
Jetting on an XR2 has been covered here before but I cant find the thread at the moment. If you are from Havasu as Jon posted obviously correction for Density Altitude
__________________
It is impossible to lick your elbow.

Team25Racing.com

At least 75% of people who read this will try to lick their elbow!
BluFin is offline   Reply With Quote
Old 17-10-2007, 10:09 PM   #5
Traveling
 
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar

Join Date: Sep 2004
Location: Alderholt
Posts: 4,223
found one of em
http://boatmad.com/forum/showthread....hlight=jetting
__________________
It is impossible to lick your elbow.

Team25Racing.com

At least 75% of people who read this will try to lick their elbow!
BluFin is offline   Reply With Quote
Old 18-10-2007, 08:38 AM   #6
Registered User
 

Join Date: Oct 2007
Posts: 2
jetting

in order to make the jetting info valid we need to know the model of carb that is jetted a certain way, for example, the xr2 i am working with has wh46 carbs, which were not original issue, please include this info ,thanks
motion is offline   Reply With Quote
Old 18-10-2007, 09:45 AM   #7
Registered User
 
Burty's Avatar
 
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer

Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
Send a message via AIM to Burty
Quote:
Originally Posted by motion View Post
i have a 1998 2.0 xr2, it has a cross drilled manifold, with wh46 carbs, these are 2.4 200 hp carbs, i am having trouble getting it right, it is used for edurance racing, also what rpm range do you think it should be propped to run in, thanks
I would run it between 6 to 7000 rpm
as for setting up everyone has different ideas but the only true way is to either run it and read the pistons or use an EGT guage to try and establish a running temp of around 1100. however both methods will invole buying or borrowing lots of different jet sizes.
__________________

Burty is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 03:35 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×