Jetting advice

From: SMTP%"lawrence@aclcb.purdue.edu" 22-MAR-1995 13:31:44.58
To: MEL1523
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Subj: Jetting

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Date: Wed, 22 Mar 1995 14:33:09 +0000
To: MEL1523@ACS.TAMU.EDU
From: lawrence@aclcb.purdue.edu (Jim Lawrence)
Subject: Jetting

>Date: Mon, 23 Jan 95 13:41:06
>From:
>Subject: Jetting
>To: mx%"lawrence@aclcb.purdue.edu"
>Cc:
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>X-POP3-ID: 1995-01-23.13:53:07.3522
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>From: MX%"AKAMATSUK@aol.com" 25-AUG-1994 02:30:25.59
>To: MX%"hawkgt@dsea.com"
>CC:
>Subj: Low cost rejetting
>
>Hey Fellow Hawksters,
>
>Here's a bit of rejetting trick which worked great for me. It got rid of the
>annoying stumble around 3k rpm, the warm up is much quicker and the bike
>generally runs stronger. I got the idea from the parts manager at my
>friendly local Honda dealer (he also happens to be a fellow Hawkster). This
>should work for anyone running an aftermarket exhaust system, but I'm sure it
>will also work for bikes with stock exhaust. You could do this for as little
>as $0.00 or it could cost as much as $2.00 (hella cheaper than the Factory
>kit).
>
>Description of mod:
>
>All stock Hawks have #138 main jet for the front and #132 for the rear
>cylinder (I think it's because the rear cyl runs slightly hotter?). Anyway,
>what I did was to take the #138 jet from the front cylinder carb and moved it
>to the rear cylinder carb. I then installed a new jet one size larger (#144)
>for the front cyl. (my friendly local Honda dealer let me trade in the old
>jet for the one I needed... my net cost $0.00)
>
>Next I raised the needle by inserting a .030" shim under the clip (flat
>washer for #2 screw works great). You have to use a shim to raise the needle
>because the stock needle only has one groove for the clip (of course for $60,
>the Factory jet kit gives you a nifty needle with multiple grooves).
>
>Finally, I drilled out the "tamper proof" seal covering the pilot screw and
>turned the screw out about 2 turns for each carb.
>
>Net result is a total dissapearance of the annoying stumble around 3k rpm,
>much better cold start performance and stronger feeling everywhere...
>everything you'll get with the $60 Factory kit for nothing... or almost
>nothing.
>
>I'm running an aftermarket exhaust (HRC RC30 carbon canister) but when I had
>to reinstall the stock exhaust to attend a CLASS school at Laguna Seca
>recently, I left the jetting as modified and the Duck... er, the Hawk ran
>just fine (no stumble, good cold start).
>
>Hope this helps somebody.
>
>Ken
>'89 Poorman's Duck
>'77 CB550F Rat Bike
>
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>To: hawkgt@dsea.com
>Date: Thu, 25 Aug 94 00:40:31 EDT
>Subject: Low cost rejetting
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>From: lawrence@aclcb.purdue.edu
>To: LAWRENCE@ACLCB.PURDUE.EDU
>Message-ID: <0098AE4F.6C5244C0.75@aclcb.purdue.edu>
>Subject: Jetting
>
>