New England Carb Synch
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From: Lexington, MA
New England Carb Synch
My SH has the hard "clunk" and dies periodically at idle (for no reason) as described on Gregs website so I figured it is time to try at a carb synch. Seems easy enough but I was wondering if anyone in the New England area would like to do a little maintenance ride, you know? Besides, I figure it's better to have more than me doing this since my fat fingers could possibly plug up the wrong thing and I don't have a carb synch tool (thinking about making my own). Let me know, can be my place or yours. I live in between Boston and Worcester MA.
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From: Lexington, MA
Thanks gang. I'm gonna try it out this next weekend. It really looks simple and I'm sure it is from what I've read. I'll probably make my own manometer and I ordered the "joint booster" from the dealership to install on my front cylinder ($4.25 w/ washer) when I do it to ease the sync process. Should be fun. If anyone wants to play let me know.
FTMS, I have a cold beer here for you but I can't promise the roads are as good down here as they are in your neck of the woods. (I'm sure they're not)
FTMS, I have a cold beer here for you but I can't promise the roads are as good down here as they are in your neck of the woods. (I'm sure they're not)
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Superstock
Joined: Apr 2007
Posts: 284
From: Warren, NH
You shouldn't have any problems. Make sure the bike is good and warm, make small adjustments, and give it a minute or two to react and stablize. If you are working on it Saturday morning and run into something give me a call. I will be in the shop.
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From: Lexington, MA
Cool, if I do I'll give ya a gingle. As alway, thanks for the assist.
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Squid
Joined: Jun 2008
Posts: 21
I really need to do this, I just bought the bike & it stalls at idle once it warms up. I can't do it this weekend & I think I should jet it at the same time since I was told the jets were never done with the Jardine slip ons. I am in NH though, right on the Maine border.
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From: Lexington, MA
Update
carb sync is really easy. I ordered the part from the dealership to make hook up on the front cylinder easy. Got a 1 foot long piece of vacuum hose and stuck it on there and ran the other end out the other side by the choke. Made my $2 manometer and hooked it up (used motor oil). Started engine and WOW!!! were they way off. I couldn't adjust it fast enough to keep it from sucking in oil so I shut her down, made an adjustment hoping for the best and tried again. Much closer now. At idle it was tough to get it spot on but at 3-4K rpm I got it perfect. What a difference, so much smoother, I can set the idle low and it wont die. Seems like a different bike (maybe overexagerating). Anyway, if anyone needs help or tips I'd be more than happy to help but it is really easy to do thanks to this site and the beautiful search function.
carb sync is really easy. I ordered the part from the dealership to make hook up on the front cylinder easy. Got a 1 foot long piece of vacuum hose and stuck it on there and ran the other end out the other side by the choke. Made my $2 manometer and hooked it up (used motor oil). Started engine and WOW!!! were they way off. I couldn't adjust it fast enough to keep it from sucking in oil so I shut her down, made an adjustment hoping for the best and tried again. Much closer now. At idle it was tough to get it spot on but at 3-4K rpm I got it perfect. What a difference, so much smoother, I can set the idle low and it wont die. Seems like a different bike (maybe overexagerating). Anyway, if anyone needs help or tips I'd be more than happy to help but it is really easy to do thanks to this site and the beautiful search function.
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From: Lexington, MA
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Posts: 242
From: Lexington, MA
You got it, let me know when and be sure to stop at the dealership and order the joint booster (takes a week to come in). It's only about $5.00. part # 16214-MB0-000 .
I'm retarded and I was able to do it, probably cost more in gas to come down to my place than to do it yourself but my door is open if you want.
All you need for the bike is that part, 1 foot long fuel line/vacuum hose that'll fit the nipple on that part you order, a screw to plug the hose when finished with the sync and a "T" to fit in your rear cylinder vacuum hose connected to the fuel tank. For the manometer all you need is 15 ft of clear tubing (same size as vacum hose to make connection easy), a yard stick and some motor oil and zip ties. connect the clear tube to the yard stick then fill about 1/4 to 1/2 with oil. Hang from cieling and your manometer is done. Make sure you don't get air bubbles in the oil though, pain to get em out. Buy some adapters to connect the manometer to your vacuum lines (the T fitting and the other 1 ft. hose you got. Hook them up and watch the oil dance. The adjust **** is just under the left side of the tank (easy access if you lift the tank and prop it up.) I think that's it. Gregs website is awesome for pictures and steps
http://home.nycap.rr.com/ghlbo/index.html
or this site , search "carb sync mod"
https://www.superhawkforum.com/forum...ight=carb+sync
I think everything together cost me about $15 including making my own manometer. Super easy and after a nice ride (with a great running SuperHawk) you owe it to yourself to spend the money saved on getting hammered drunk in celebration.
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Squid
Joined: Oct 2006
Posts: 18
From: Mississauga, ON
Eh, whenever I do a carb sync, I hate how the cylinders are so much off @ idle compared to 3k rpm. I hear this is normal though.
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