HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: Sunny Jim on February 26, 2015, 06:23:40 AM

Title: 120R
Post by: Sunny Jim on February 26, 2015, 06:23:40 AM
Well the heads are off tonight , courtesy of Rx bob. Looks like the pistons are 2-3 thou above deck height.
Is this normal ?
Would explain the extra comp as otherwise explained.
Title: Re: 120R
Post by: kd on February 26, 2015, 06:36:42 AM
I just checked my 2013 motor and they are at 0 deck height with a straight edge (using PVC to snug the barrels). I haven't put a dial on them yet because I want to check run-out at the same time (and I got busy plowing F'n snow AGAIN :banghead:).
Title: Re: 120R
Post by: Sunny Jim on February 26, 2015, 07:07:31 AM
Well we are averaging around 35 deg C day in day out. Some days 40 + .
I would love some snow.
You win some ! You lose some !
The deck height is above zero. Unlike your temp.
So much for mass production.
Title: Re: 120R
Post by: Sunny Jim on February 26, 2015, 07:04:47 PM
Cam chest open! Crank run out is .006. I would have preferred less I just say.
Title: Re: 120R
Post by: Roadraceking on February 26, 2015, 07:20:12 PM
Would be curious as to how much less that .006 would be on a stand at the crank bearing surfaces.
Title: Re: 120R
Post by: Sunny Jim on February 26, 2015, 08:07:45 PM
Yes me. Too, but. Not this time around.
Next year crank out and a 124 kit perhaps or maybe some GMR pistons.
Title: Re: 120R
Post by: Dodgy on February 26, 2015, 10:18:12 PM
Hey Pete, why not turn your 107" into a 124? Too hot to ride ATM!
Title: Re: 120R
Post by: Sunny Jim on February 26, 2015, 10:29:10 PM
That a great idea Dave! It's only $$.
Three motors - one bike.
I would need to machine the cases - who would you recommend!?
Title: Re: 120R
Post by: N-gin on February 26, 2015, 10:55:01 PM
 :pop:
Title: Re: 120R
Post by: Sunny Jim on February 27, 2015, 02:56:05 AM
Seriously! What's with the popcorn, dude?
Title: Re: 120R
Post by: Jaycee1964 on February 27, 2015, 04:22:17 AM
.006 is not out of the "normal" range from what I have seen.  Heck my 2012 TK is out .005 with 30K miles on it and it'll be another 30K before I look at it again.  I figure if it's moved it's done moving. 
The only reason i would be concerned is if it was beat on with launches and hard stopping.
Title: Re: 120R
Post by: Sunny Jim on February 28, 2015, 02:39:36 AM
Well the bike is home.
RXBob is the real deal. Enthusiastic, honest and reliable .
The 660 SM 's are really exciting. 266e's were great above
3500 rpm. But these 660s are fabulous.
Time to retune!
Title: Re: 120R
Post by: N-gin on February 28, 2015, 03:41:32 AM

I like popcorn, the red kernels.
And I'm following to see were this goes. I could just hit the notify, but that's no fun.
Title: Re: 120R
Post by: RXBOB on February 28, 2015, 06:18:40 AM
Least ya didn't mention me frying the drive belt on the test ride :idunno:
Title: Re: 120R
Post by: Sunny Jim on February 28, 2015, 06:22:18 AM
Well there is only one way to fry a belt Bob. Lol!
Title: Re: 120R
Post by: kd on February 28, 2015, 06:33:29 AM
Will you be sharing a dyno sheet on your combination when it gets its tune?
Title: Re: 120R
Post by: Sunny Jim on February 28, 2015, 04:21:52 PM
The new valve train is quieter than the original.

SS roller rockers, AVV springs, GMR lifters and SE taper P rods.

Dyno results in a few weeks.
Title: Re: 120R
Post by: No Cents on February 28, 2015, 05:00:18 PM
  :up:   :pop:

Ray
Title: Re: 120R
Post by: Sunny Jim on March 01, 2015, 06:48:12 AM
Another Auto tune run today.
I can now validate the claims of TR, Ray and others.
660's in a 120r - very impressive.
A word of Caution - there is no cure!
Title: Re: 120R
Post by: joe_lyons on March 01, 2015, 07:17:08 AM
The cure is "More Cowbell."
Title: Re: 120R
Post by: No Cents on March 01, 2015, 08:33:59 AM
 Joe...I've never heard of that cure before   :soda:

Ray
Title: Re: 120R
Post by: Ohio HD on March 01, 2015, 08:34:49 AM
[attach=0]
Title: Re: 120R
Post by: Sunny Jim on March 01, 2015, 03:18:09 PM
It. Does run much hotter than before. A bit of a concern.
Title: Re: 120R
Post by: speedzter on March 01, 2015, 09:24:19 PM
Whats the cranking pressure at now ?
Title: Re: 120R
Post by: Sunny Jim on March 02, 2015, 12:48:50 AM
We expect 196 psi CCP.
Title: Re: 120R
Post by: No Cents on March 02, 2015, 03:49:03 AM
  It should run cooler once you have a good dyno tune put on it.

Ray
Title: Re: 120R
Post by: Sunny Jim on March 02, 2015, 04:06:25 AM
Yes Aray, I will remove the fullsac pipe and introduce the VH power dual. Just have to weld in the wide band ports.