cv carb replacement
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5th Gear
Joined: Jan 2010
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From: cornish me
cv carb replacement
I've got an 89 flhtcu and I need to upgrade to a cv carb . I read I should go with a 93 or later to get the accel. pump . Will any year in the 90's fit ? Is the last number the year ? I suppose I might have to rejet?
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
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From: Bluffton, South Carolina
Definetly get one with the accellerator pump. The numbers after the dash indicate the first year it was used, Try the stock jetting with an '88 sporty needle. Hope this helps.
Cruiser
Joined: Jul 2008
Posts: 122
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From: Cape Breton NS
Any year CV will fit...my '90 Heritage came with a CV with an accelerator pump on it, carb part number 27038-90A. The newer CV's(I have one ends with -99B) don't have a drain screw or overflow tube, not sure when they eliminated them.You may have to change cables. Get a CV manifold for it, part number for the manifold on mine is 27019-89, flanges 27009-86A front and 27010-86A rear.
HDF Community Team
Joined: Dec 2005
Posts: 5,374
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From: NC USA
In addition to the above mentioned intake and cables, (buy cables for your bike in a later year - after '90) you will need a totally different air cleaner assembly. The backing plate and cover are different to accommodate the vacuum chamber on the CV. If buying a used CV, keep in mind the enricher (choke) cable and valve assembly parts are another $50 if they're missing. You will also need to fashion a simple bracket for the new choke cable because it comes off the rear of the CV as opposed to the front of your original.
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5th Gear
Joined: Jan 2010
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From: cornish me
thanks all ,I'll see what I can find. I get the cough through intake from the non CV carb .
Actually I am getting a real bang back through the carb on occasion which I believe may be indication of an air leak . any thoughts that ?
Actually I am getting a real bang back through the carb on occasion which I believe may be indication of an air leak . any thoughts that ?
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HDF Community Team
Joined: Dec 2005
Posts: 5,374
Likes: 2,570
From: NC USA
Yep. Probably a cracked compliance fitting. But all that will be gone with the CV setup.
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2701989, 2703890a, carb, carburetor, cv, davidson, evo, harley, identification, intake, manifold, numbers, pn, shovelhead, suit
