Need more torque & hp!
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Novice
Joined: Nov 2007
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Need more torque & hp!
Traded up in the spring from a XL1200 to an 80" EVO Fatboy and though the ride improved the performance tanked. I found a lot of options to fix this but can't decide on which to use. I replaced the exhaust, air cleaner, and installed the Dynojet Thunderslide. I also did a complete tuneup. I didn't notice a whole lot of improvement. For now I need to stick to the low cost alternatives. This would include changing the cam but choosing one is almost impossible when you have no idea what each one does. Any suggestions would be greatly appreciated! Thanks.
Robert
Robert
5th Gear
Joined: Sep 2007
Posts: 9
Likes: 0
From: Middle Tennessee
RE: Need more torque & hp!
I have a 1988 Evo with the Andrews ev-27 cam and 10.5-1 Keith Bkack pistons with Python-3 exhaustand It runs very good with this set up.You definitely have to run high test gas with this combo,but I run high test anyway.
Tourer
Joined: Mar 2007
Posts: 462
Likes: 1
From: Arizona
RE: Need more torque & hp!
Find a good Independant shop that can work with you on what type of exhaust, carb and cam combo will work. If you don't put togather parts that work well togather you will wasteyour money. You can only bump up an Evo so much before you run into longevity problems. The cases are the weak link.
RE: Need more torque & hp!
ORIGINAL: hawghead88
I have a 1988 Evo with the Andrews ev-27 cam and 10.5-1 Keith Bkack pistons with Python-3 exhaustand It runs very good with this set up.You definitely have to run high test gas with this combo,but I run high test anyway.
I have a 1988 Evo with the Andrews ev-27 cam and 10.5-1 Keith Bkack pistons with Python-3 exhaustand It runs very good with this set up.You definitely have to run high test gas with this combo,but I run high test anyway.
What exhaust did you use?
Seasoned HDF Member
Joined: Oct 2007
Posts: 56,052
Likes: 88,782
From: Western South Dakota
RE: Need more torque & hp!
ORIGINAL: extech
Great combo here.
What exhaust did you use?
ORIGINAL: hawghead88
I have a 1988 Evo with the Andrews ev-27 cam and 10.5-1 Keith Bkack pistons with Python-3 exhaustand It runs very good with this set up.You definitely have to run high test gas with this combo,but I run high test anyway.
I have a 1988 Evo with the Andrews ev-27 cam and 10.5-1 Keith Bkack pistons with Python-3 exhaustand It runs very good with this set up.You definitely have to run high test gas with this combo,but I run high test anyway.
What exhaust did you use?
Do you see something different that I didn't?
Road Master
Joined: Jan 2006
Posts: 1,192
Likes: 4
From: Columbus, OH
RE: Need more torque & hp!
I have the EV-27, SE ignition module, SE slip ons and a S&S super E. Pulls hard, runs great, very happy with the results and only invested around $1100 total including the carb. I did all the work though. When you change the cam, make sure youuse a torrington bearing, replace the lifters if youhave over 30,000 miles on them. You will love the lope that the cam gives to the sound too.
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Cruiser
Joined: Jun 2007
Posts: 100
Likes: 0
From: Virginia
RE: Need more torque & hp!
I had an 89 FLHS. I found that the Andrews EV-27 gave a good boost throughout the powerband.Noheadworkor other mods are required - the EV27 is an easybolt-on install. Make sure youreplace the bearing.
I also replaced the lifters with a set from Jim's and replaced the stock pushrods with adjustable ones (I can't remember the manufacturer).
I also replaced the lifters with a set from Jim's and replaced the stock pushrods with adjustable ones (I can't remember the manufacturer).
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Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
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From: Windham,Maine
RE: Need more torque & hp!
Hop ups are always difficult,trial and error is what most of the serious hot rodders do.Otherwize it is always a hit in the dark.Get your feet wet and good luck.
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Novice
Joined: Nov 2007
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From:
RE: Need more torque & hp!
I've looked at the EV-27 and the specs say great for lighter bikes. Is my Fatboy considered a lighter bike? I'll be researching this well before I do any work. My buddy bought a new Superglide and the New 96" pulls pretty well and I can't come close to keeping up. The only advantage I have ison the line. I'll take him every time into second gear and then it's over. Another friend has a 99 Nightrain( not sure, were they EVO or TC ) that just crushes me regardless of the situation. He had the stealership big bore it a few years back. Anyhow, that is what I want. Unfortunately, I have to do this in stages due to financial restraints. I've done the stage 1 setup (V&H exhaust, Arlen Ness Big Sucker A/C, Dynojet Thunderslide, and full tuneup) and am ready to move on. As for the tune up, I used stock components so I'll probably need to change some of them. It was recommended to use a different coil. What's the difference between the 2? I'm sure I'll have a ton of questions as I proceed with the project and I would like to offer my gratitude for all the responses that you have given and for the future ones as well.
Robert
Robert