Engine swap
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Stage I
Joined: Jan 2021
Posts: 1
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From: KY
Engine swap
I recently replaced the twin cam 88 on my 2003 wide glide with a 2014 103 & 6 speed the transition went smooth for the most part but I'm getting some spark knock I'm guessing it's from switching the 103 from fuel injection to carbureted any suggestions on tuning this odd setup?
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
Could really use more info on this frankenbuild.
Exhaust? Tuner?
Assuming you're not jetted lean, retard the timing in the area you're getting the knock.
What timing ARE you running? What ecm for that matter?
Exhaust? Tuner?
Assuming you're not jetted lean, retard the timing in the area you're getting the knock.
What timing ARE you running? What ecm for that matter?
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,939
Likes: 8,036
From: poway
Buy a DTT ignition for it.. The issue is that the 103s run higher compression than the 88s so they need less timing. You may need a bigger pilot jet and main also. Is good to know that a later Dyna drivetrain fis an early TC frame, 
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Curt J
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Jul 31, 2013 02:23 PM
