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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I looking for 4 replacement lock/jam nuts for for Harley's Screamin Eagle Premium Tapered Quick Install Adjustable Pushrods, part # 18404-08. Harley does not sell them separately. I picked them up at a swap meet without the lock/jam nuts for a great price.
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NO, they DON'T all do that!
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Does Comp Cams makes the Harley's Screamin Eagle Premium Tapered Quick Install Adjustable Pushrods?
I don't know who makes what. What I do know having both SE and comp PR's is this. The both look exactly the same. Both have 3/8-24 for thread including the jam nut. A regular hardware store 3/8's nut has 9/16 wrenching flats. You need a 1/2 wrenching flat in order not to rub covers.
I don't know who makes what. What I do know having both SE and comp PR's is this. The both look exactly the same. Both have 3/8-24 for thread including the jam nut. A regular hardware store 3/8's nut has 9/16 wrenching flats. You need a 1/2 wrenching flat in order not to rub covers.
Maybe they have different models, but I actually measured mine and they are 5/16-24. The nuts are 1/2" flats.
__________________________________________________ ____ For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
I don't know who makes what. What I do know having both SE and comp PR's is this. The both look exactly the same. Both have 3/8-24 for thread including the jam nut. A regular hardware store 3/8's nut has 9/16 wrenching flats. You need a 1/2 wrenching flat in order not to rub covers.
I dont know if the 9/16 flats would rub
as long as you weren't about .575 lift they'd probably be ok
The SE Quick Install Tapered (PN 18404-08) referenced in the OP have 5/16" x 24tpi jam nuts. When introduced a few years back, there were issues with poor quality jamb nuts that would hairline crack when tightened and loosen after a few miles. The MoCo seems to have solved the problem and I still run them in one of my bikes which make 110HP/124TQ; no issues since installation about 25K miles ago.
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Looking for SE Push Rods Jam nut.
