Ear shave and coaster almost done - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
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post #1 of 16 (permalink) Old 10-18-2012, 07:30 PM Thread Starter
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Ear shave and coaster almost done

So I had my bike apart to look at my engine and as I ended up ear shaving and coastering as well. I took off the ears, cut the air box out, took the carbs out, changed the jets, blocked off the vacuum like on the right carb... is it necessary that I shim the needle? I have not done so yet, but I have the parts in the garage. What is the disadvantage to not doing so?

I read a step-by-step that instructed me to buy two Emgo crankcase breathers. I've got them, but not so sure what to do with them. Does one go to the crank case vent hose and one go to the carb vent hose? It's the most sense I can make of all of this thus far.


Thanks in advance,
VP
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post #2 of 16 (permalink) Old 10-18-2012, 07:45 PM
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That is correct.

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1985 VN750 Acquired Feb, 2011 - 13,676km
Mods - Ear Shave, Pickup Coil Gap, Drilled Clutch Basket, Shift Tie Rod, Mosfet R/R, MF Battery, De-Goated (H-Pipe), MCCT, Heated Grips, Plexistar 2 Windshield

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2004 KTM SX 125 - 1979 Can-Am Qualifier 250 - 1971 Kawasaki F6

Video Tutorials - Engine Rebuild - Fork Seal Replacement - Grease Swing Arm Bearings - Carb Rebuild - Spline Lube - Refilling Rear Shocks - Grease Steering Bearings
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post #3 of 16 (permalink) Old 10-18-2012, 07:49 PM Thread Starter
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Shimmy shimmy? Do I have to?

PS -Watched all of your engine videos. Can't thank you enough for putting them together.
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post #4 of 16 (permalink) Old 10-18-2012, 08:09 PM
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Shimmy shimmy? Do I have to?
Yes you do.
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post #5 of 16 (permalink) Old 10-18-2012, 08:25 PM Thread Starter
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How many do you recommend per carb? I'm riding between 0 and 2500 feet elevation.
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post #6 of 16 (permalink) Old 10-19-2012, 12:45 AM
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2 shims under each needle.

http://map.vulcan750.net/

VROC# 33976
1994 VN750

MODS SO FAR:
honda shadow 750 sissybar
ear shaved, K&N pods
142/42 jets, Cobra pipes
oversized tires, vn800 seat
vn750 rad cover, Tank bib
custom mirrors, gel battery
led dash lights, led tail light
led plate light, chrome levers
horn relocation, custom voltmeter
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post #7 of 16 (permalink) Old 10-19-2012, 12:46 AM Thread Starter
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Thanks.
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post #8 of 16 (permalink) Old 10-19-2012, 12:48 AM
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i connected the carb vent hose to the plastic cover under the tank

http://map.vulcan750.net/

VROC# 33976
1994 VN750

MODS SO FAR:
honda shadow 750 sissybar
ear shaved, K&N pods
142/42 jets, Cobra pipes
oversized tires, vn800 seat
vn750 rad cover, Tank bib
custom mirrors, gel battery
led dash lights, led tail light
led plate light, chrome levers
horn relocation, custom voltmeter
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post #9 of 16 (permalink) Old 10-19-2012, 04:52 AM
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It's weird, the PO put on Emgo pod filters on this bike, rejetted it with 2 shims under each needle. The bike ran like crap. He had 138/38 in the carbs. and I'm at roughly 3300 feet.
I finally took out the shims and jets and put everything back to stock, and it runs fine. It was really hard to start, ran rough and the fuel mileage sucked. I couldn't even get a hundred miles out of a tank. The goats belly and stock mufflers are off of it, and there is a set of Sportster mufflers on there now.
I had read on here that with an earshave with the stock exhaust system, a rejet wasn't necessary, unless I read it wrong.
Are you still running the stock exhaust system vulcanpower?
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post #10 of 16 (permalink) Old 10-19-2012, 05:27 AM
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you are backwards TSmith, its rejet for shave, and no rejet for exhaust mods. also Emgo Filters are hard to set up for our bike... Properly oiled K&N filters are the easiest to use for the earshave.
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