Newb question about GRAMBO - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Engine / Exhaust / Cooling
\ From the radiator, through the case and out
the exhaust. If it has to do with the cooling,
engine or exhaust, discuss it here!

 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 05-23-2007, 05:35 PM Thread Starter
 
Join Date: Apr 2007
Posts: 43
iTrader: (0)
 
Newb question about GRAMBO

I took my 86 for its first (at least in quite a few years) inspection and they told me the bike really needed a valve adjustment. They didn't give me a price. So, two questions...

I'd like to try the GRAMBO trick, but I'm not familiar with the "tensioner bolt" or how to find it. Any pics online of where this bolt is so I can try the trick?

If it comes down to it, how much is a reasonable price for a garage to charge for adjusting the valves?

This is my first bike, I've only had it a week or two, and have been trying to do whatever I can (in a limited budget and with limited mechanical skill) to get it running good. It was sitting a long time apparently, before I bought it. Any guidance on this grambo trick or tune-up prices would be appreciated.
The_Spaceboy is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 05-23-2007, 06:23 PM Thread Starter
 
Join Date: Apr 2007
Posts: 43
iTrader: (0)
 
Doh, I posted too soon. I decided to just give it a try, and luckily think I could the right bolt. I gave it a try, and the noise in the front cylinder seems reduced. I still hear some moving parts in there, but not nearly as bad. Wooohooo! Praise be to grambo.

I also decided to do a "test" marble by removing the hose on the cylinder that is backfiring and covering it with tape & my finger. It seems to have helped. Tomorrow I'm gonna get a marble and try it. Getting closer to having this thing running okay...
The_Spaceboy is offline  
post #3 of 8 (permalink) Old 05-23-2007, 07:44 PM
 
Join Date: May 2007
Posts: 43
iTrader: (2)
 
Do not literally use a marble!!!!!!! Find something, a copper cap, or, like me, a fitting that will fit securely in the hose or over the nipple. I just do not like the idea of someone putting a marble in the line. You never know.
GoUglyEarly is offline  
 
post #4 of 8 (permalink) Old 05-23-2007, 10:26 PM
85 VN 700
 
curtis97322's Avatar
 
Join Date: Feb 2007
Location: Albany, OR
Posts: 1,033
iTrader: (4)
 
The marbles are a larger diameter than the intake - so short of the marble shattering, there's nothing wrong with using a marble.

Trust me - it's hard to shatter a marble (I tried when I was a kid... that's some thick glass).

I didn't like the look of the hoses and mine were pretty rotten - so I used vacuum caps. Some have also used 5/8? chair caps.

Curtis - Albany Oregon.
Currently receiving therapy from "Doc" - My 1985 VN700.

Daily rider in NorthWET Oregon.
Ammo Can Saddlebags
Shaved and Rejetted. Coastered. Degoated w/ Hardley pipes.

Bought Feb 2007 with 12K miles.
Hit the 24k mile July 2008

http://photobucket.com/curtis97322
curtis97322 is offline  
post #5 of 8 (permalink) Old 05-24-2007, 07:08 PM Thread Starter
 
Join Date: Apr 2007
Posts: 43
iTrader: (0)
 
I was thinking of trying a copper fitting, just to be safe. But once you cap the hoses, what do you do with the nipples on the cylinders? Just let it go as-is, or do you cap that too?

I was doing some looking around, and the hoses that go from the cylinders under the seat are pretty ratty. I might replace them altogether to see if it helps before marbling.

I was riding today and it sounded like I was doing a drive by while I drove down a long hill, so I definitely have to do SOMETHING.
The_Spaceboy is offline  
post #6 of 8 (permalink) Old 05-25-2007, 02:36 PM
Members who have donated towards server costs
 
fergy's Avatar
 
Join Date: Mar 2006
Location: Kyle, Texas
Posts: 4,054
iTrader: (3)
   
Somewhere they sell plates that go where the valve is that replaces the whole valve and cap the side of the head off flush. I can't remember where I've seen them though. Dianna would know.

Lots of us have used the marbles with great success. Don't fear the marble.

Fergy
Kyle, TX VN750.com member #707 VROC#19556
2002 VN1500 Classic
Spline Lube Procedure, with photos, R/R Relocation and Coil Mod
Rusty Tank Cleaning!
Electrical Fault Finding Flowchart
SEAFOAM JUNKIE!


fergy is offline  
post #7 of 8 (permalink) Old 05-25-2007, 07:07 PM Thread Starter
 
Join Date: Apr 2007
Posts: 43
iTrader: (0)
 
I decided I wanted to try the copper fitting thing, but couldn't find any. So, I ended up buying 4 5/8 rubber chair legs. What I did was remove the hoses altogether, and put a stopped on each cylinder and also on the two nipples under the seat. There was also another big hose and a small hose on that thing under the seat, but I left them as-is.

Anyway, the backfiring didn't get any better. So I fiddled with the carb screws a little more. I found that 3 turns on the rear cylinder and about 1 1/2 on the front seemed to stop the backfire.

Problem is, now the bike seems to be running hot. The temperature was just slightly above the middle of the gauge. Not into the red, but a little above the tiny thermometer symbol. There was also a small amount of smoke coming out from behind the engine when I stopped. Could marbling cause it to overheat?
The_Spaceboy is offline  
post #8 of 8 (permalink) Old 05-25-2007, 07:48 PM
HAWK
 
Ccspinner's Avatar
 
Join Date: Feb 2006
Location: Chicago land
Posts: 2,576
iTrader: (9)
 
Send a message via Yahoo to Ccspinner
Did you remove the valve from under the seat?
If so you need to plug the vacume line and the large line to the air box.

Chad Falstad "Hawk"
Vroc #17649
2011 HD Ultra Classic "angel"
2001 Nomad 1500 Sold March 2012
2001 VN 750 "Sold June with 2008 with 21,000""Serinity"
Ccspinner 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