Carb Jet Question, Answers Welcome - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 07-22-2011, 07:23 PM Thread Starter
Senior Member
 
G3P0's Avatar
 
Join Date: Aug 2009
Location: MN West Mpls
Posts: 116
iTrader: (2)
 
Carb Jet Question, Answers Welcome

I have an 85 vn700, ears shaved, re-jetted, goat still in, considering removing it.

I had to get some spare parts for the re-build, got some 750 cylinders & pistons, will I need to re-jet again to use the 750 top end? I havent looked to closely at the carb or jets because they work great. My main reason for wanting the 750 top end is because I can't easily get head gaskets for the 700 and don't want to re-use the old ones, anyone? bueller?


85 VN700 Project Bike
Earshave
R/R Relocate
Mustang Seat
Custom grill cover
Busted Engine... removed, split, waiting on parts
Cleaning up & painting the rest

Parts still needed... wanted...
11" shocks, or one stock
Aftermarket exhaust... eventually
Extended forward controls or custom hwy peg mounts for my cramped legs...
G3P0 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 07-23-2011, 12:01 AM
If only it had 6th gear..
 
DavesVulster's Avatar
 
Join Date: Jul 2011
Location: North of Boston
Posts: 1,100
iTrader: (1)
 
I don't think you will need to re-jet them. Just double checked the manual. Air cleaners are the same ( I know you shaved ) and the jets are the same numbers. Pretty sure the jetting has more to do with balancing the air/fuel ratio with the restrictions of the original air cleaners or in your case and mine with the ears gone, the size of the orifice on the carbs. An increase of 50 cc's is not a big enough change to effect that. It's like putting a Holley four barrel from a 305 V8 onto a 350. No changes need to be made except of course messin' with the idle mixture. Hope it goes together smoothly for you. I just cleaned and tested my floats and I'm going to reassemble everything tomorrow and hopefully be ridin' by mid morning and letting the nightmare of the past couple of weeks dissolve in the drone of the engine. Peace,
Dave

Last edited by DavesVulster; 07-23-2011 at 12:06 AM.
DavesVulster is offline  
post #3 of 7 (permalink) Old 07-23-2011, 12:06 AM Thread Starter
Senior Member
 
G3P0's Avatar
 
Join Date: Aug 2009
Location: MN West Mpls
Posts: 116
iTrader: (2)
 
Maybe I should start with this question.
Can 750 heads & pistons be properly installed on a 700 without modification? I saw a thread on this once but can't find it now.
This is a question for the engine thread I know, didn't want to start a new one on the same topic...


85 VN700 Project Bike
Earshave
R/R Relocate
Mustang Seat
Custom grill cover
Busted Engine... removed, split, waiting on parts
Cleaning up & painting the rest

Parts still needed... wanted...
11" shocks, or one stock
Aftermarket exhaust... eventually
Extended forward controls or custom hwy peg mounts for my cramped legs...
G3P0 is offline  
 
post #4 of 7 (permalink) Old 07-23-2011, 12:17 AM
If only it had 6th gear..
 
DavesVulster's Avatar
 
Join Date: Jul 2011
Location: North of Boston
Posts: 1,100
iTrader: (1)
 
Probably but not sure. take a look at the online manual below. There's a section called my rides and you can enter more than one bike to compare part numbers and diagrams. Maybe that will help some.

http://www.cheapcycleparts.com/model...semblies/73162
DavesVulster is offline  
post #5 of 7 (permalink) Old 07-23-2011, 12:24 AM Thread Starter
Senior Member
 
G3P0's Avatar
 
Join Date: Aug 2009
Location: MN West Mpls
Posts: 116
iTrader: (2)
 
Double post, lag...


85 VN700 Project Bike
Earshave
R/R Relocate
Mustang Seat
Custom grill cover
Busted Engine... removed, split, waiting on parts
Cleaning up & painting the rest

Parts still needed... wanted...
11" shocks, or one stock
Aftermarket exhaust... eventually
Extended forward controls or custom hwy peg mounts for my cramped legs...

Last edited by G3P0; 07-23-2011 at 12:33 AM.
G3P0 is offline  
post #6 of 7 (permalink) Old 07-23-2011, 11:54 AM
Senior Member
 
Join Date: Mar 2005
Location: Channelview, TX
Posts: 748
iTrader: (1)
 
Quote:
Originally Posted by G3P0 View Post
Maybe I should start with this question.
Can 750 heads & pistons be properly installed on a 700 without modification? I saw a thread on this once but can't find it now.
This is a question for the engine thread I know, didn't want to start a new one on the same topic...
I'm assuming you mean cylinders, not heads; heads should be the same on either engine. The 750 is essentially a bored out 700, and in fact, the only difference in the cylinders is probaby the liner used.

In other words, the only difference in the two engines is the cylinder bore. 750 cylinders and pistons can be used on the 700 case with 700 heads or 750 heads.

Jim

J.D.
Kerrville, TX
'95 Vulcan 750 "Therapy II",
aka "Raggedy Ann"
'95 VN750 project
'03 VN800B "The Little Black"
'04 VN800E Drifter project
'93 VN1500A custom project
VROC #16185
GCVROC #33

Photo album: http://www.flickr.com/photos/leekayd/sets
J.D. is offline  
post #7 of 7 (permalink) Old 07-23-2011, 04:46 PM
Chucklehead
 
dragon159's Avatar
 
Join Date: Dec 2007
Location: Poynette WI
Posts: 1,050
iTrader: (3)
 
X2 ^ as a testament the original engine in mine (when I got it) was a 700 bottom with 750 jugs and heads. ran fine but the "hacks" that put it together messed up the base gaskets and so it was leaking all over the lower end and onto the rear tire .....

Glad I changed it.

87 vn750at least that is what the frame #'s say
"Squirrel Bike" aka Jersey

Rat bike with a good PR agent

shaved and coastered
2 into 1 exhaust
rear 170 and front 110
Relocated R/R
custom dash with voltmeter
Spitfire windscreen
Plutonium plugs
Recovered seat without "butt hammers"
More to come
Praise to the Parts Goddess Crobins for needed things

When someone tells me "Great minds think alike" all I can think is "You Pervert"
dragon159 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome