How are your fuel injectors? Have enough fuel getting to your cylinders? Is it running lean or rich? Things that affect horse power would be the ability to get air/fuel in, get enough air/fuel, burn the fuel & be able to expell the burnt fuel. @ 160 psi, I would think that the valves are closing. What compression ratio are you running? What grade fuel are you using? Try some race fuel 103 octane or higher. Good luck & keep us posted.

Toby

 

My 113" is only making 109hp. Wish it was closer to 125...lol.

Sorry I can't help on your problem.

 

Doesn't that 58mm throttle body come with the kit?

 

What is involved in clearancing the rocker boxes, I am sure that they probablly overlooked that. And that would make sense as to why the pinging went away when we put the 264 cams in.

I am not real familiar with the inside of a harley motor, which side of the rocker would be hitting the box the pushrod side or the valve side or both? I am guessing the valve side not allowing the valves to close all of the way??

I went with the 58mm throttle body because it comes as part of the motor kit from HD.

I don't have the dyno sheets scanned but the curves are horrible they don't look anything like they are supposed to, they are not even the same shape as the harley spec curves and done making power by 4000 rpm.

Thanks alot for the help, I will keep you posted.

 

Good luck!

 

i hope the guys at the harley shop get it figured out. if they're stumped, then your motor is not in good hands. this is bound to be very frustrating for you. hopefully they'll figure it out, good luck.

 

Good luck. At the very least a region factory tech should be called in.

 

At what rpm did it only get to 70hp?

Reading what kit you used I think there are several areas that are killing your power.

The 58mm throttle body in my opinion is too big for your build. It will make it lazy in the lower rpm range because you have to much TB volume to fill. ( Im using my stock TB that was massaged by Horse power Inc to a 54mm with the 5.3g injectors on my 117") I was told that the 58mm TB is good for a engine that 120in and up in size

Second the heads Harley designs could be another area. The 98CC MVA heads is large and could result in your lower hp readings as well . A large volume head along with the large intake valves they use could result in lower power. ( My heads where done by TMan and I run just under 10.25 compression with his head work and my heads are 92cc)

Third the 266E cam is a high lift, high RPM cam. Its power comes in the upper RPM range. Unless your planning on racing it all the time this cam is over kill in my opinion for a street riden bike.

Also when you read Harleys graphs these numbers they post are taken from the crank not the rear tire. There is torque and horsepower loss that Harley doesnt show the real numbers we would see on a dyno

Keep in mind torque moves mass and HP sustains motion



quote=Aces&Eights;8199583]I have a 2011 Roadglide Custom, I had the dealer install the screamin eagle 113 kit, with the CNC ported heads, high compression pistons, 58 mm throttle body and intake, 266 cams the complete 113 kit.

They put it together and it only made 70HP on the dyno, they blamed the tune, so we Tuned it it and it only made 75 HP but was detonating so bad they were afraid it was going to blow up. The compression tests showed 160 on each cylinder.

The suspected cam timing so they took it apart and checked the cam timing and pushrods etc. Everything checked out, so they put it on the dyno again and it did the same thing.

So they took it apart again and changed the cams thinking maybe they were off from the factory, they put 264s in and it only made 60 hp.

They were stumped and the factory doesn't have any answers, they ordered in a new 113 kit thinking there must be a defective part, however eveything in the new kit measures and mic's out the same as the old kit. The dealer and the factory are stumped as to what to do.

Any one have any of these problems or have any suggestions??[/quote]

 

The compression of that 113 according to the se is 10.5 to 1. That should be in 190 cranking compression area. Make sure they are turning off the compression release (acr's) when testing.

If its only making 160 psi that is very low for that combination. They should confirm the compression with another gauge then do a cylinder leak down test.

If both cylinders are low and there are no leaks I would say Its a cam timing issue.

 

Have them take the top rocker box's off and then do a compression check. If the psi comes up you found the problem. Then get the dremel out and grind the webbing on the bottom of the rocker box's