1998 Evo build help please??
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Novice
Joined: May 2009
Posts: 20
Likes: 1
1998 Evo build help please??
Ok guys I'm about to start my Indy is getting ready to start working on my motor and I need to know what parts is it going to take for me to get around 90 hp and 90 tq? Please give me the complete combo because I don't have a clue as to what parts to buy. Thinking of porting heads and decking them to up the compression. What do you guys think?
Cruiser
Joined: Nov 2008
Posts: 240
Likes: 1
From: West Michigan
That's an easy one...........if you trust your indy enough to work on your motor then listen to what he suggests............otherwise get a mechanic that you trust.
I used to own an Indy shop and 90/90 is easy to do on an Evo, but if your guy don't know how to do it, then find someone who does. I'm not being a S A just simple, honest advise.
Good luck
I used to own an Indy shop and 90/90 is easy to do on an Evo, but if your guy don't know how to do it, then find someone who does. I'm not being a S A just simple, honest advise.
Good luck
Tourer
Joined: Feb 2009
Posts: 404
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From: L.A. (Lower Alabama)
There is no way, in a reasonable amount of space, to "list every component" that will give you what you are looking for. Like motrhd says, an easy build for a competent wrench, using a variety of combinations available in many places. It wont be cheap, if it is good. Engines are a system, everything works with everything else, or should if you want longevity. You also need to address your clutch as well, if you want it to last with a double tq engine. See what your indy has to say.
Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
90/90 is pretty stout for a 80 incher, couple questions, how big is the motor going to be? second what kinda bike is it going in ? third, do not cut the heads, period, it changes the combustion chamber shape and will cause problems if you get to crazy with the compression.
Tourer
Joined: Feb 2009
Posts: 404
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From: L.A. (Lower Alabama)
Look here for packages: http://www.cycle-rama.com/HPProducts.html
or here: http://www.johnsonenginetechnology.c...ance_pack.html
or here: http://www.johnsonenginetechnology.c...ance_pack.html
Last edited by oldbiker771; Dec 6, 2010 at 08:54 PM. Reason: addition
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
Talk to your indy! Take his advice if he seems confident of getting what you want. Does he have a dyno, to tune and prove the finished results?
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Novice
Joined: May 2009
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Ok here is what my Indy has put together. EV46 cam, 10 to 1 pistons, Super E carb, adjustable push rods and a Crane ignition. He also wants to clean up the heads.
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Elite HDF Member
Joined: Sep 2007
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From: Bluffton, South Carolina
Find out what he wants to clean up the heads and check with some of the shops that just do heads and engines. The extra money would be well spent, as once the heads get "hogged out" it costs lots more to make them right. The valve guides need to be removed to do a proper job, then replaced with new ones. Heads done wrong will cost you HP and Torque. Sach's out of Florida does very nice work with really good results, and there are lots of others.