80" Evo Build
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Joined: Oct 2012
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From: Elizabethtown, Kentucky
Going on an '85 FXWG, I would like to go with 2 into 1s but can't find anything to clear the kicker...
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From: on the road
been looking myself.Ones that claim they will won't and there would be a smashed area in the tube from the kicker.
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Joined: Jun 2012
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From: Indiana
I would assume my heads are alright, but I'd probably do a small port and polish. I know you can go too far very quickly when porting heads and end up hurting power... As far as a cam I am totally lost. I like the Andrews EV27 but I want a cam to make alot of power down low rather than all over. That being said I also don't want a dog in the upper RPM's but mainly a cam made for stoplight to stoplight.
As far as stock S&S motors go... They come stock with adjustable pushrods, .595" sidewinder springs, and a Super E carb.
What all am I looking to buy, with keeping all of these things in mind? I was thinking a cam (and all the gaskets that go along with a cam swap) and a P&P head? Is that all?
P.s. would it be better to buy a stock Screamin' Eagle head?
As far as stock S&S motors go... They come stock with adjustable pushrods, .595" sidewinder springs, and a Super E carb.
What all am I looking to buy, with keeping all of these things in mind? I was thinking a cam (and all the gaskets that go along with a cam swap) and a P&P head? Is that all?
P.s. would it be better to buy a stock Screamin' Eagle head?
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From: almost there
Why would he want Sreaming Eagle heads, Hes got much superior ss heads now, just have them ported.
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From: almost there
I would ask S&S what they suggest for what you want. Thats the best plan. I think the OP said he hasent rode the engine yet, it just might be a rocket already. Need to know what size cam and valves are already in it.
Last edited by aces&8s; Jan 24, 2013 at 02:03 PM.
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From: Indiana
How do 80" Evos compare to the newer twin cams (the 96" and the 103")? I'm sure it doesn't have as much behind it but those two engines are bigger... Just wondering since I won't get a chance to ride it soon, and would like someone else's opinion on it. I know S&S has a great track record.
Here's a link to some specs:http://www.sscycle.com/feature/featureview.php?s_id=53
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From: almost there
True, It very well could be. That's why I was wondering if anyone else had ridden one. I hope it's got some *** to it as it sits, but idk.
How do 80" Evos compare to the newer twin cams (the 96" and the 103")? I'm sure it doesn't have as much behind it but those two engines are bigger... Just wondering since I won't get a chance to ride it soon, and would like someone else's opinion on it. I know S&S has a great track record.
Here's a link to some specs:http://www.sscycle.com/feature/featureview.php?s_id=53
How do 80" Evos compare to the newer twin cams (the 96" and the 103")? I'm sure it doesn't have as much behind it but those two engines are bigger... Just wondering since I won't get a chance to ride it soon, and would like someone else's opinion on it. I know S&S has a great track record.
Here's a link to some specs:http://www.sscycle.com/feature/featureview.php?s_id=53
Hard to compare without all the specs since its an SS. If I was going to buy an SS motor, I would have Not wanted to have to build it . I would have gotten the SS 111" 115 hp & 120 torque. and never touched the motor. Not the fastest but all you need and will last forever. I can get one for $5000 that I dont have. Another $500 install.
SS usually builds motors that produce close to 80 hp per 80 ci. in other words 1 hp per 1 ci., if so an 80 hp stock is fairly healthy. call ss for there input. ss motors can take a bigger build and handle the higher pressures better than HD..
Last edited by aces&8s; Jan 24, 2013 at 05:00 PM.
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At 8.4-1 compression, it won't make 80 HP and S&S isn't listing specs on a 508 cam? A strong but safe street 80" needs to get to 9.5-1 with a EV27, 9.8-1 or 10.0-1 with a Woods W6 or EV46, there is an old school S&S 561 that will go into that engine that has been around longer than the Ev27 and puts out some sick dyno numbers.
S&S heads usually have a large combustion chamber that would need a "good" head porter to do minor port work and cut the surface down to lower the chamber size or replace the pistons because 80" needs compression to have giddy up.
Change springs, bump up the compression above the 10.0-1 range and hit a W8, S&S 585 with some port work and hit another level with a 80" so the sky is the limit as long as your wallet can support it.
On running with a 103" having good exhaust and a Mastertune will pull away from a low compression 80" A 96" will most likely handle a low compression 80", hey I'm a Evo guy, I ride with alot of Twinkies and calling a spade a spade. Use the basic 80" formula in a light bike will get to the 80-85 hp range and give a 103" all it wants, jump up to the bigger cams with compression will embarrass a 103" with a little engine but always remember, there are some bada$$ Twinkies lurking around.
S&S heads usually have a large combustion chamber that would need a "good" head porter to do minor port work and cut the surface down to lower the chamber size or replace the pistons because 80" needs compression to have giddy up.
Change springs, bump up the compression above the 10.0-1 range and hit a W8, S&S 585 with some port work and hit another level with a 80" so the sky is the limit as long as your wallet can support it.
On running with a 103" having good exhaust and a Mastertune will pull away from a low compression 80" A 96" will most likely handle a low compression 80", hey I'm a Evo guy, I ride with alot of Twinkies and calling a spade a spade. Use the basic 80" formula in a light bike will get to the 80-85 hp range and give a 103" all it wants, jump up to the bigger cams with compression will embarrass a 103" with a little engine but always remember, there are some bada$$ Twinkies lurking around.
Last edited by 1997bagger; Jan 24, 2013 at 07:02 PM.
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Joined: Jun 2012
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From: Indiana
At 8.4-1 compression, it won't make 80 HP and S&S isn't listing specs on a 508 cam? A strong but safe street 80" needs to get to 9.5-1 with a EV27, 9.8-1 or 10.0-1 with a Woods W6 or EV46, there is an old school S&S 561 that will go into that engine that has been around longer than the Ev27 and puts out some sick dyno numbers.
S&S heads usually have a large combustion chamber that would need a "good" head porter to do minor port work and cut the surface down to lower the chamber size or replace the pistons because 80" needs compression to have giddy up.
Change springs, bump up the compression above the 10.0-1 range and hit a W8, S&S 585 with some port work and hit another level with a 80" so the sky is the limit as long as your wallet can support it.
On running with a 103" having good exhaust and a Mastertune will pull away from a low compression 80" A 96" will most likely handle a low compression 80", hey I'm a Evo guy, I ride with alot of Twinkies and calling a spade a spade. Use the basic 80" formula in a light bike will get to the 80-85 hp range and give a 103" all it wants, jump up to the bigger cams with compression will embarrass a 103" with a little engine but always remember, there are some bada$$ Twinkies lurking around.
S&S heads usually have a large combustion chamber that would need a "good" head porter to do minor port work and cut the surface down to lower the chamber size or replace the pistons because 80" needs compression to have giddy up.
Change springs, bump up the compression above the 10.0-1 range and hit a W8, S&S 585 with some port work and hit another level with a 80" so the sky is the limit as long as your wallet can support it.
On running with a 103" having good exhaust and a Mastertune will pull away from a low compression 80" A 96" will most likely handle a low compression 80", hey I'm a Evo guy, I ride with alot of Twinkies and calling a spade a spade. Use the basic 80" formula in a light bike will get to the 80-85 hp range and give a 103" all it wants, jump up to the bigger cams with compression will embarrass a 103" with a little engine but always remember, there are some bada$$ Twinkies lurking around.
I'm not too worried about hp numbers because I really want real world, seat of the pants horsepower. Which is really more torque than anything, up to a certain speed.
I'd love to have a badass 80" up until about 50-55 mph. Then it can do whatever it really wants... lol thanks for the advice man!