EV27 cam
Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
I have stock gearing. I have had this dyno tuned.....not sure what is going on. She burns oil however....about a quart every 1200 miles. Could this be part of the problem?
On the freeway I tend to keep her at 75 to 80. guess that's not really "taking it easy".Maybe the problem is my wrist!
On the freeway I tend to keep her at 75 to 80. guess that's not really "taking it easy".Maybe the problem is my wrist!
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
I have stock gearing. I have had this dyno tuned.....not sure what is going on. She burns oil however....about a quart every 1200 miles. Could this be part of the problem?
On the freeway I tend to keep her at 75 to 80. guess that's not really "taking it easy".Maybe the problem is my wrist!
On the freeway I tend to keep her at 75 to 80. guess that's not really "taking it easy".Maybe the problem is my wrist!
Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
Here's something you can check pretty easy. Warm the bike up, put a fan on the exhaust to cool it down. Take the pipes off and look at the valve stems. If there is oil on them then the exhaust seals are leaking, no big problem. If not the next step is a little more complicated. Take the carb off and use a dental mirror to look at the intakes to see if they are leaking. If so you might want to fix them as any oil from either the intakes or rings will dilute the fuel mixture and cause problems like detonation, carbon build-up, etc. Hope this helps.
Advanced
Joined: Aug 2009
Posts: 59
Likes: 1
From: Rapid City, SD
I ran an EV27 in my '97 Heritage. I also had SE heads, S&S Super E carb, Wiseco ProLite pistons .010 over, Supertrapp 2 into 1 w/ 18 disks, SE ignition, SE coil, SE plugs, magnecor wires. Little 80 ran like a raped ape. I had to drop in a 6 speed tranny for the long rides otherwise I'd have to stop for gas way too often. It would get upper 40's MPG is I could lay off the throttle.....
EV27 is a pretty good cam for low to mid range power, glad I went with the 27 vs the 46 for my riding style.
EV27 is a pretty good cam for low to mid range power, glad I went with the 27 vs the 46 for my riding style.
Road Captain
Joined: Apr 2005
Posts: 535
Likes: 14
From: Highspire Pa
I am far from an expert but with our 80" and the way we ride I got about 40 mpg and some times less and with the 113" the best I can do was about 38 mpg, but usually less. I think it has to do with the amount of weight the bike is hauling and the type of roads, pulling a lot weight up and down hills that requires a lot shifting may burn more fuel than cruising down a flat open highway where wind resistance is the only major factor.
Road Captain
Joined: Aug 2008
Posts: 550
Likes: 8
From: Twin Cities,Mn.
Here's something you can check pretty easy. Warm the bike up, put a fan on the exhaust to cool it down. Take the pipes off and look at the valve stems. If there is oil on them then the exhaust seals are leaking, no big problem. If not the next step is a little more complicated. Take the carb off and use a dental mirror to look at the intakes to see if they are leaking. If so you might want to fix them as any oil from either the intakes or rings will dilute the fuel mixture and cause problems like detonation, carbon build-up, etc. Hope this helps.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
WOW!! That as out of focus as a computer dating photo of a 50 year old !!!! LOL But yes !!
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Elite HDF Member
Joined: Oct 2005
Posts: 3,872
Likes: 83
From: Canton, Michigan
Back to the OP...
The three 'must do's' for an EVO are: Intake, Cam, Exhaust. Next would be an ignition upgrade. You don't need a single fire, IMO, just something with a higher limit. An upgraded 80" EVO should easily make the 80/80 (approx) numbers with these mods and some tuning.
There are very little miles on your bike. At 14k, that EVO is just nicely broken in, so wouldn't spend the $$$ for head work at this point. Unless you've got something going on. A good porter can work the stock heads for a 'street setup'. Anything more, and IMO, you might start looking for a replacement set of HP heads.
Your RK is the same weight as my FLHS. When I added the SE air cleaner, SuperTrapp (18 disc) slipons, and EV27 cam, it was like riding a different bike. I don't have the exact dyno numbers handy, but I know that I'm in that 80/80 range. My bike has no problems running two-up, loaded, at interstate and above speeds.
As far as MPG, I get in the high 30's around town, and the low to mid 40's out on the slab. On an interstate trip, where I'm running 70-75mph, I normally will start looking for a gas station after 160 miles, which generally leaves me with a gallon of 'reserve'.
The three 'must do's' for an EVO are: Intake, Cam, Exhaust. Next would be an ignition upgrade. You don't need a single fire, IMO, just something with a higher limit. An upgraded 80" EVO should easily make the 80/80 (approx) numbers with these mods and some tuning.
There are very little miles on your bike. At 14k, that EVO is just nicely broken in, so wouldn't spend the $$$ for head work at this point. Unless you've got something going on. A good porter can work the stock heads for a 'street setup'. Anything more, and IMO, you might start looking for a replacement set of HP heads.
Your RK is the same weight as my FLHS. When I added the SE air cleaner, SuperTrapp (18 disc) slipons, and EV27 cam, it was like riding a different bike. I don't have the exact dyno numbers handy, but I know that I'm in that 80/80 range. My bike has no problems running two-up, loaded, at interstate and above speeds.
As far as MPG, I get in the high 30's around town, and the low to mid 40's out on the slab. On an interstate trip, where I'm running 70-75mph, I normally will start looking for a gas station after 160 miles, which generally leaves me with a gallon of 'reserve'.
Last edited by Hackd; Jan 20, 2010 at 07:45 AM.
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Cruiser
Joined: Feb 2009
Posts: 107
Likes: 0
From: appomattox,Va
Ev-27 done
got the work done and road tested this weekend.Very happy with results.Crusin` at 60mph and a little twist of the wick and to 85-90mph in no time.Very pleased! Thanks everyone for all of the response. Skip
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