 |
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
__________________
|
|
|
|
16-10-2007, 10:55 AM
|
#2
|
|
Senior Member
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: 3,095
|
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
|
|
|
|
|
16-10-2007, 11:58 AM
|
#3
|
|
numbskull
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
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
|
|
|
|
|
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: 4,225
|
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!
|
|
|
|
|
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: 4,225
|
__________________
It is impossible to lick your elbow.
Team25Racing.com
At least 75% of people who read this will try to lick their elbow!
|
|
|
|
|
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
|
|
|
|
|
18-10-2007, 09:45 AM
|
#7
|
|
Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
|
Quote:
Originally Posted by motion
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.
__________________
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Linear Mode
