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1230

  • Thread starter Thread starter Guest
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Good going Bill. Just in time for some good summer riding.


All the best to you and yours,

Cliff
 
Isnt it always summer in Calif?:confused:
I pulled my engine out today, took about 3 hours or so. Hopefully i can get the 1170 kit for it.
I maxed out my torque wrench (140#) taking off the front spocket, a little too tight eh? A source of my noise maybe.
 
Last edited:
Now it's jetting time.
Started with
155 Mikuni mains
50 Pilot jets
Needle on second from bottom
Plugs sooty with no heat color on threads
Now
152.5 Main
50 Pilot
Needle two and a half from bottom
This is a very safe jet with good color on the plugs and a half to one thread of heat.
I'll stick with this until the motor breaks in. The first jetting would inhibit the engine from breaking in with the rich settings.
With a cold engine I also did a Compression check with 110 across the board. Could be better but again on a cold motor. The motor only has 200 miles on it.
 
Hell, just go ahead and slap a turbo on there while you at Bill...:D
 
gearhead13 said:
Isnt it always summer in Calif?:confused:
I pulled my engine out today, took about 3 hours or so. Hopefully i can get the 1170 kit for it.
I maxed out my torque wrench (140#) taking off the front spocket, a little too tight eh? A source of my noise maybe.
Click to expand...
Unless you LIKE to buy new torque wrenches, do NOT use a torque wrench to disassemble things! Ray.
 
rapidray said:
Unless you LIKE to buy new torque wrenches, do NOT use a torque wrench to disassemble things! Ray.
Click to expand...
Ya, I have had this cheap torque wrench for 24 years or so, I KNOW its not accurate, but makes a good breaker bar:D I have a second 1/2" and another 3/8"
I dont know if you seen one of these antiques(pictured), but I call it my good torque wrench:eek:
 
New jetting
Main jet 1&4 150
Main jet 2&3 152.5
Jet needle third from bottom.
Will post spark plug reads after a good ride.
The jetting was still too rich.
 
Bill, unknown to most that aren't knowledgable tuners & engine builders, most times a ported head will be more efficient & actually use LESS jetting than a stock engine that isn't as efficient. I wasn't surprised to see you needing to go smaller jetting. Terry & I have discussed this before too. I would try 145s on the outers & 147.5s on the inners. Ray.
 
You guys have all the cool tricks... I was at Trippivot's yesterday and we were talking about using different mains in different cylinders. I do have a question... how are you deciding on the smaller mains? Is it plug condition or a specific tool? Thanks
Curt
 
rapidray said:
Bill, unknown to most that aren't knowledgable tuners & engine builders, most times a ported head will be more efficient & actually use LESS jetting than a stock engine that isn't as efficient. I wasn't surprised to see you needing to go smaller jetting. Terry & I have discussed this before too. I would try 145s on the outers & 147.5s on the inners. Ray.
Click to expand...

Ray,
I'm running 147.5's (1166 Terry head and 36mm CV; so I'm very similar except for the larger CC) all the way across and was thinking of bumping by inside cyliners up. My temp is more under control now so maybe just retard the timing a degree or two on those cylinders.
Jim
 
bellucci said:
You guys have all the cool tricks... I was at Trippivot's yesterday and we were talking about using different mains in different cylinders. I do have a question... how are you deciding on the smaller mains? Is it plug condition or a specific tool? Thanks
Curt
Click to expand...
I read the heat on the plugs. The inner two had one thread of heat and the outer two had no threads of heat. The base of the plug where the tang is on is sooty on the outer two and dark on the inner two.
This thing did roll on wheelies with a rich setting.
 
posplayr said:
Ray,
I'm running 147.5's (1166 Terry head and 36mm CV; so I'm very similar except for the larger CC) all the way across and was thinking of bumping by inside cyliners up. My temp is more under control now so maybe just retard the timing a degree or two on those cylinders.
Jim
Click to expand...
Jim, leave the timing the same on all 4 cylinders! Just go 1 size bigger on the inner cylinders due to more heat there. Ray.
 
jets

jets

Is this a common problem because my bike also is lean on 2 and 3 and richer on 1 and 4 ?
 
blowerbike said:
bill,
48 degree's of total advance should clean those plugs up nice.:-\\\
Click to expand...
I MAY make it one mile.
image058.gif

32 is where it's at and I'm sure.
 
62 bugzilla said:
Is this a common problem because my bike also is lean on 2 and 3 and richer on 1 and 4 ?
Click to expand...
The inner cylinders get hotter since they don't have outer cooling fins.
The GS1150 came stock with 120 mains on the outers and 122.5s on the inners.
 
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