alternative hop up
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Joined: May 2007
Posts: 61
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From: New York
alternative hop up
Has anybody taken a stock 98 evo with fuel injection and just change out pistons and barrels to maby 88 cubes. My buddy did 92 cubes and the bike runs like a mother but is like a blast furnace between your legs. He also did the cam and a Mikuni. I'm looking for stock sound and reliability.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: alternative hop up
Sounds like he's running lean. Maybe he needs to adjust his air/fuel ratios.
You could have the same problems at 88 inches or even 80 inches if you mess with breathing (air cleaner, exhaust and then maybe a cam) and don't richen the mixture.
With carbs they rejet them. With computers they have to be remapped in some way.
You could have the same problems at 88 inches or even 80 inches if you mess with breathing (air cleaner, exhaust and then maybe a cam) and don't richen the mixture.
With carbs they rejet them. With computers they have to be remapped in some way.
Cruiser
Joined: May 2007
Posts: 207
Likes: 1
RE: alternative hop up
Anything big enough to make a big change will req. your cases to be bored. I havedone alot of evo performance upgrades and I like this upgrade the best.S&S super stock heads and pistons leaving the bottom end at 80cid. with a EV59 cam, and some free flow muffers and you will have a very fast and reliable engine, and you could build it yourself on a weekend.
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
Likes: 444
From: Ohio
RE: alternative hop up
Here ya go.......................
http://www.revperf.com/Evo/EvoHome.html
I haven't done it yet, but I'm thinking.......................
http://www.revperf.com/Evo/EvoHome.html
I haven't done it yet, but I'm thinking.......................
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