Milwaukee Eight testing.

[rigidthumper]

UB, I haven't ridden it, only on the dyno trying some different mufflers.

Too bad you cant fit a set of Mellows for testing

[Durwood]

.

SE Heavy Breather

That maybe the governor right there.

After conversing with people in the know, we have determined that the SE heads are the choke point.

The CR-530 cam has been in several 140+ hp builds, and I pulled the AC element and didn't really gain anything other than more tuning time.

This R&D is fun, and we have only begun to scratch the surface.

Interesting, it has been the general consensuses that those cnc heads flow in the 340-350 cfm range, more than enough to support 150 hp with a proper set-up. I wonder if they may require some cam testing and development along the lines of what Redshift did with the stock castings.

Haven't personally seen a build with these heads to crack the 140 plateau.

I was told that stock heads would have made more power on this build, but again this is conjecture and why it's important to test.

We will be trying a set of ported heads on this build sometime in the future. Also noteworthy is that this build isn't squeezed as hard as ones we've seen.

I am checking the CCP tomorrow and will post the results.

cool Daren...will your bike be this same recipe? 

The only thing at this point I can tell you with certainty is that the shop mule will be 124". 

UB, I haven't ridden it, only on the dyno trying some different mufflers.

Too bad you cant fit a set of Mellows for testing

I have a set, all I need is the S&S Power Tune dual head pipe. Maybe on my bike.

[1FSTRK]

.

SE Heavy Breather

That maybe the governor right there.

After conversing with people in the know, we have determined that the SE heads are the choke point.

The CR-530 cam has been in several 140+ hp builds, and I pulled the AC element and didn't really gain anything other than more tuning time.

This R&D is fun, and we have only begun to scratch the surface.

Interesting, it has been the general consensuses that those cnc heads flow in the 340-350 cfm range, more than enough to support 150 hp with a proper set-up. I wonder if they may require some cam testing and development along the lines of what Redshift did with the stock castings.

Haven't personally seen a build with these heads to crack the 140 plateau.

I was told that stock heads would have made more power on this build, but again this is conjecture and why it's important to test.

We will be trying a set of ported heads on this build sometime in the future. Also noteworthy is that this build isn't squeezed as hard as ones we've seen.

I am checking the CCP tomorrow and will post the results.

As always thanks for all your hard work and for sharing it with us here. With out guys like you we are left with only the advertisers.

What were the build specs on this 124,
Head cc's
gasket thickness
piston volume
deck height
Looking forward to the ccp numbers also

Added
What head pipe did you use for this muffler test?

[Durwood]

CCP on this 124 is 191/190. and it feels great on the road.

I have mine apart right now, going 124" with stock heads and throttle body. We are correcting the deck height on it. (.015" in the hole).

[sfmichael]

CCP on this 124 is 191/190. and it feels great on the road.

I have mine apart right now, going 124" with stock heads and throttle body. We are correcting the deck height on it. (.015" in the hole).

   

[Durwood]

Hey D, can you show the same 3 runs with AUC? I'm curious if the Street Cannons beat the FM Street Outlaws.

Here you go Robin.
[attach=0]

[rigidthumper]

Thanks, D. I was hoping to see 16, 27, and 46, like in post #261.

[Durwood]

Thanks, D. I was hoping to see 16, 27, and 46, like in post #261.

My mistake. Should have looked at the graph a little closer when I got the run file numbers.

Let's do this again.
[attach=0]

[rigidthumper]

Thank you Sir. I Appreciate your time and effort on these things!

[Durwood]

Now back to my bike. I installed a 124" big bore kit on it, and zero decked the cylinders, as the rear was .019" in the hole and the front was .015" when mocked up.

It now rolls over @ 230/230 CCP, with the static compression @ 11.1:1.

This is a purpose built torque build, which I named "The Tractor", and after riding it yesterday, it lived up to the billing..

Roll on power is nothing short of amazing, just twist the grip and GO!

This is a simple stage 3 build with only the cam, injectors, cylinders and pistons swapped, then a good tune.

Using stock heads and stock throttle body this time around.
[attach=0]

[Buglet]

   That like good, it should get you moving down the road. You should have no trouble passing now. Great work.

[Prostock]

Good stuff Darren.  140 ftlb's at 2500.  And affordable

[1FSTRK]

Now back to my bike. I installed a 124" big bore kit on it, and zero decked the cylinders, as the rear was .019" in the hole and the front was .015" when mocked up.

It now rolls over @ 230/230 CCP, with the static compression @ 11.1:1.

This is a purpose built torque build, which I named "The Tractor", and after riding it yesterday, it lived up to the billing..

Roll on power is nothing short of amazing, just twist the grip and GO!

This is a simple stage 3 build with only the cam, injectors, cylinders and pistons swapped, then a good tune.

Using stock heads and stock throttle body this time around.
[attach=0]

You are going to have to get the tailor to put longer sleeves on all your jackets.

Just for a visual could you post the run from this graph http://harleytechtalk.com/htt/index.php?topic=95948.msg1216062#msg1216062
on the graph under the new 124" run.
Thanks

[Geraldsd]

Can't wait to see your "mule" with head work...you do great work...

[sfmichael]

very nice Daren 

[DTTJGlide]

Are you still running the stock clutch with the heavy springs or have you upgraded to something else? Thanks for all the testing & sharing of info

[Durwood]

I just switched to a 10 plate clutch pack using the red Barnett springs after this last tuning session..

The 9 plate OE clutch was giving up at 2700. It made more torque on other runs, but the graph wasn't smooth because of clutch slip.

Next up is a larger throttle body.

[1FSTRK]

I just switched to a 10 plate clutch pack using the red Barnett springs after this last tuning session..

The 9 plate OE clutch was giving up at 2700. It made more torque on other runs, but the graph wasn't smooth because of clutch slip.

Next up is a larger throttle body.

I am still in awe of your numbers from the big bore with the stock TB, we talked about a better manifold and TB way back during your 107" cam testing. The clutch upgrade and a good base line is a great start because you know that new TB was going to walk right through the other one in the middle of your test.
 

 

[Malazan]

What is your favorite cam between the Tman P200, RS468, and the CR460

I'm really leaning toward the CR460

[MakoHD]

You're doing some really good compression! Great job! I didn't read through the whole thing. What gear are you doing the pulls in ?

[Durwood]

What is your favorite cam between the Tman P200, RS468, and the CR460

I'm really leaning toward the CR460

The new CR-480 is on the top of the heap. It won't be available for a week or so.

You can't go wrong with the CR-460 or the RS-468 though, the 200 I have not tested.

You're doing some really good compression! Great job! I didn't read through the whole thing. What gear are you doing the pulls in ?

6th gear.

[Malazan]

Oh hell yeah, I just saw the Dyno for a stock exh 107 with the 480


https://m.facebook.com/1544666332477222/photos/a.1557930651150790/2312630202347494/?type=3&source=48&__tn__=EH-R

[Ken R]

Darn good torque, Good looking bike too. Fullsac next?

Ten years ago, we could spend thousands of dollars to soup our motors up to get anything like that.   

[Durwood]

Made a little time for a cam swap and tune on Blue this week. Kept the stock heads and throttle body in the interest of changing one thing at a time. This is with the CR-470.

It still has that snap off the bottom that it had but now carries farther and stronger.

Can't wait to get a TB on it to see where the curve goes from there.

Here's the cam specs.

Intake   open 16  Close 40  .470 lift  102LC   236 duration

Ex.    Open 60   Close 14   .460 lift  113LC  254 duration

30 degree over lap  107.5LSA

[attach=0]

[HD/Wrench]

that is the most HP I have seen with stock TB most are low 120 very nice .  From what I have tested thus far 140 seems to be the avg limit of power with stock heads . I have two large cams to test in a 128 will see what  they do .