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A10loader
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« on: January 16, 2012, 04:14:06 PM » |
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Hello everyone. Just got registered so I could post. I own a 2000 Tourer with 47,000 miles and so far have replaced both both front and rear wheel bearings, did the desmog, installed the Factory Pro jet kit, installed the Interstate carb springs, replaced the fork springs with the Progressive springs and installed the Interstate shocks on the rear. I get 29-31 (Depending on air temp) mpg after doing the carb mods. Overall very happy with my Valk. It has always had the 3,000 to 4,000 RPM mild viberation when pulling through the gears. I always thought it was just the big motor waking up and have not attempted to chase it down. I just built a carb sync tool using .017 inch flexable clear tubing with transmission fluid as a filler in all six tubes. My carbs where a little out of sync at idle and I got them synced within a 1/2 inch using the flex tube sync tool. When I rev the engine to 2,000 RPM the number 2 carb appears to be lagging 6-7 inches as measured by the fluid in the flex tubes although at idle all six tubes are within 1/2 inch. Is this normal or can anyone shed light on this? I will post results of all suggestions I try. Thanks in advance.
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YoungPUP
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« Reply #1 on: January 16, 2012, 04:26:44 PM » |
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I vaguley remember reading somewhere that some tune the carbs at 3000 rpm as thats where most of the riding is done.
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Yea though I ride through the valley of the Shadow of Death I shall fear no evil. For I ride the Baddest Mother F$#^er In that valley!
99 STD (Under construction)
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Joe Hummer
Member
Posts: 1645
VRCC #25677 VRCC Missouri State Representative
Arnold, MO
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« Reply #2 on: January 16, 2012, 04:28:59 PM » |
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Your mileage is probably about right...after making those changes. Thing to remember is that the IS Carb Springs is that they allow the carbs to open up quicker than the Standard/Tourer springs. Plus...you probably have more of a tendency to twist the throttle a little more than normal so your mileage will suffer.
The trick with syncing the carbs is that the #3 is your basis. There is not an adjustment screw for that carb. So, you have to sync all the others to that one.
If the cylinder is lagging, I would check your intake o-rings. That one may be worn more than the others...or it didn't seat properly.
Joe
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1999 Valkyrie Interstate
You pay for the whole bike, why not use it Jerry Motorman Palladino
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A10loader
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« Reply #3 on: January 16, 2012, 04:36:23 PM » |
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Thanks for the replies. I will check/replace the 0 ring and see if theres any change.
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John Schmidt
Member
Posts: 15260
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #4 on: January 16, 2012, 04:51:19 PM » |
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Thanks for the replies. I will check/replace the 0 ring and see if theres any change.
Before jumping in and replacing it, spray some WD40 around the area where the intake attaches to the head. If it makes a difference, that tells you there is a problem there. Then spray each separate joint where the rubber meets the metal....one spot at a time. Also the vacuum nipple in back of that carb may be cracked or just not on good. Same applies to the rubber intake sleeves, possibly curled up in back and not seated on the carb properly. |
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Pete
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« Reply #5 on: January 16, 2012, 05:25:51 PM » |
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I would also pull a compression and leak down test on the offending cylinder.
Not normal!
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alph
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« Reply #6 on: January 16, 2012, 06:17:00 PM » |
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I would also pull a compression and leak down test on the offending cylinder.
Not normal!
now that's a whole new can of worms!! many people will say doing a compresion test requires all the spark plugs to be out, that works fine in a car, but not a Valk!! you need to leave the spark plugs in except for the one cyclinder your testing, also (if i remember correctly) the engine should be hot. do one at a time, have fun!! |
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Promote world peace, ban all religion. Ride Safe, Ride Often!!   |
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Patrick
Member
Posts: 15433
VRCC 4474
Largo Florida
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« Reply #7 on: January 17, 2012, 08:48:29 AM » |
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You didn't mention how long #2 cylinder lag lasted.. If it never caught up to the others, I'd be concerned about a possible intake leak. If it did eventually catch up I'd think about a lazy diaphram.. You are only trying to adjust the sync at a constant idle speed, yes ?
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Patrick
Member
Posts: 15433
VRCC 4474
Largo Florida
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« Reply #8 on: January 17, 2012, 08:53:47 AM » |
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I didn't pay attention to your handle.. Does that mean you have spent time around Warthogs ?? Thats one of my favorite turbine aircraft even though I've not been able to drive one.. A friend has over 4K hrs in them..
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A10loader
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« Reply #9 on: January 17, 2012, 06:32:31 PM » |
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I did not have any wd 40 so I smeared a little 90 weight around the intake and it came up. So I will go to Advance and get a new O ring this weekend. Patrick, everyone, operators and ground crew loves the Hog. I sure miss that high pitched whine of the engines and the IR Mavrick and the GAU8 30MM completed the package. Was with 23 TFW out of La., deployed to the Gulf in 1990 with them and retired in 1994. I wasn't a pilot but loved wotking around and on the aircraft. They got everything right with the A-10 for once. Thanks for all the replies.
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BlueValk
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« Reply #10 on: January 17, 2012, 09:33:18 PM » |
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I did not have any wd 40 so I smeared a little 90 weight around the intake and it came up. So I will go to Advance and get a new O ring this weekend. Patrick, everyone, operators and ground crew loves the Hog. I sure miss that high pitched whine of the engines and the IR Mavrick and the GAU8 30MM completed the package. Was with 23 TFW out of La., deployed to the Gulf in 1990 with them and retired in 1994. I wasn't a pilot but loved wotking around and on the aircraft. They got everything right with the A-10 for once. Thanks for all the replies.
Sounds like you got it. Good catch. youngPup, Did you even read the original post? Or are you getting paid just to reply?? |
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