compaired to the same motor with 10.5-1 it is.im not going to get in a pissing match with you,we build ALOT of motors & use ALOT of S&S 585 cams,now maybe by some voodoo crap,they work different in a evo than a TC (never put one in a evo),but they don't like compression under 10.5-1,bigger displacement motors can get away with lower compression(around 10.2-1 or 10.3-1),but not 9.5-1.(don't really care if it came from S&S like that or not)and if its a TUV motor,it is a EPA motor (not USA,but your EPA,whatever that may be)

 

I simply commented on my experience, that's all. Happy new year....

 

That's the cams I got SE204 stock 103 with .030 head gaskets. And it sounds like a Harley lol.

 

Graham, I am not saying you are wrong (I completely value your opinion on this forum) about the 585 in your EVO, but in a small displacement Twin Cam I agree with Kirby that they will be flat on the bottom without compression. I currently have them in my 95" build in my bagger set to 10.5:1 and they really don't shine until I am up over 3k rpm (3300rmp to be more exact). From there to the redline the bike is a rocket. I am actually going 98", changing the heads and installing some CR575's (will set to 10:1) this winter to move the power significantly to the left. I will gladly sacrifice the HP up top to gain TQ down low...

 

That's where it is, down low.... Just make sure the drive train can handle it....

 

You should sample a stock 111"! I'm not the one doing the arguing here, I'm simply commenting on first-hand experience of my bone stock engine and what it does. It's a touring engine, designed and sold by S&S expressly for that application. Their current V111/T111 has the same cam for the same purpose, with a similar low CR, as indeed does the touring T143". Mine is great and isn't 'flat', regardless of what anyone says. In the meantime I'll enjoy the ride with a smile!

 

Im not "arguing" either,just stating where the 585's like to be set as far as compression goes.fact,not just my opinion.if you think your motor.set @9.5-1 isnt flat on the bottom,ide advise you find one set at 10.5-1,im thinking your assessment of your motors power will change

 

We're going round in circles - it is also very happy with a lower CR. Fact!

 

Obviously the 585 is a very versatile cam... Good for motors from 88" through 124". Cams will also react differently based on cubic inches. Graham i would love to see a Dyno sheet on a lower compression build..... When i decreased the compression on my Evo and went to a longer stroke, I ended up with a lot more than i thought would get...

 

It certainly seems to be all things to all men. I have a dyno sheet, showing both true dual pipes and my Supertrapp 2-into-1. Unfortunately it is rather faint and doesn't scan well enough to post it, otherwise I would have done so. I'll see what I can come up with! The graphs below are early runs with my original TDs, showing around 90TQ or more from 2,500rpm through to 5,500rpm. The Supermeg raises that hollow in the torque curve to just above the 100 mark throughout. S&S used to publish dyno sheets, but I haven't found them on their current website. Mine is near as damn it as per their published figures at the time I bought it.