5 Dec 2011

harley hop up tech resource

this is kind of a clunky website, but it has some great tech advice for hop-ups and engine mods. the links on the sidebar to the right have some really good info!

I'm thinking with my shovel rebuild, I'd like to do a few minor things to give it a mild boost over stock while remaining as reliable as possible. Everyone who has advice or opinions should load em up in the comments below...the more the merrier!

My hop up list so far goes like this:
-i already have a super e with high flow air cleaner and some air to fuel voodoo inner secret bits, 2into1 exhaust with large collector and minimal baffling, solid pushrods & adjustable lifters, electronic ignition & high output coil, head oiling plumbing rerouting (to prevent uneven oil pressure and oil starvation)
-the heads and ports will be beadblasted
-the valve seats will be lapped and contoured
-the valves, guides, springs, and collars will be replaced with better than stock components
-rocker shafts will be replaced, and if possible stock rockers will be replaced with roller rockers
-cylinders will be bored and honed just enough to get a fresh surface
-pistons will be replaced with durable new ones slightly larger and slightly higher compression than stock
-a mild cam with a smooth idle and a broad powerband will be bolted in
-new gaskets all around with slightly thinner metal core head gaskets will nudge compression just a hair
-all the bottom end should need is split the cases to replace a few bushings and a few bearings...and maybe balance the flywheel
-maybe grab an s&s oil pump or just new guts for the stock unit
-all that will be running through an open belt primary to a 5spd tranny and spinning a 51 tooth rear sprocket.

Since I'll be pulling a relatively light chopper and highway cruisin is where I like to spend most of my time, neither earth shattering torque nor record breaking peak horsepower is going to be beneficial.

What I am looking to do is boost the mid and high range power a bit, lower my rpms at highway speed, keep a smooth idle & easy kick starting, and a and find a good marriage between bulletproof reliability and freshened up broad power.

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