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[cvosjoe]

My bet is the clutch. I had J&B tune my CVO RK, Brandon told me I had some clutch slip, as my lines were "choppy" also = inherent with the "slipper clutch in the CVO models.
He suggested this:https://aimcorp.myshopify.com/collections/vp-sdr-for-cvo-new-clutch.
I had a VPC in my 113" @ 130+ tq, no felt, or visible on the dyno graph slippage.

Harry spotted it right away. Just checked with Brandon and he confirmed that the Gear Ratio graph shows clutch slippage.

[Unbalanced]

Joe,

Glad you have an idea of what is causing the chop.  Hope you get it sorted out quickly and get to enjoy that new found power.

[HD Street Performance]

Good job and great tune

[FLSTFI Dave]

My bet is the clutch. I had J&B tune my CVO RK, Brandon told me I had some clutch slip, as my lines were "choppy" also = inherent with the "slipper clutch in the CVO models.
He suggested this:https://aimcorp.myshopify.com/collections/vp-sdr-for-cvo-new-clutch.
I had a VPC in my 113" @ 130+ tq, no felt, or visible on the dyno graph slippage.

I have the Aim Corp VP-SDR for the CVO at the house ready to install when I do the build on my 13 CVO King.  Waiting on my pistons.  According to their web site the version I have is the high performance version.  From their site

Hi-Performance: With the Performance Clutch Spring Kit, AM008-002 handles up to 155ft-lbs torque.

[cvosjoe]

I have the Aim Corp VP-SDR for the CVO at the house ready to install when I do the build on my 13 CVO King.  Waiting on my pistons.  According to their web site the version I have is the high performance version.  From their site

David,
I am using the SE spring that is supposed to handle 153 ft pds of TQ at the crank. Gonna try the AIM 480 lb spring and see if it helps.
Joe

[rockytop117]

David,
I am using the SE spring that is supposed to handle 153 ft pds of TQ at the crank. Gonna try the AIM 480 lb spring and see if it helps.
Joe

It will solve the issue as I had the same problem but not as extreme as yours.

[MrSurly]

I must be missing something. 141/145 from a 117" with a TW9,11.4 and a 55tb.
I guess I need to do a lot more reading....
Those seem like 120, 124" numbers but I'm likely just not reading it right.
You got me wanting a TW9.

[cvosjoe]

Put it together myself and yes it's a 117.

[Rooster]

I had to add the Gold diaphragm spring to a Rivera Pro Clutch to stop slipping at WOT during tuning. A little rough on the grip trying to hold the clutch in at the red lights so mostly try to pop into neutral just before stopping. The only thing I don't like about the clutch is can't get it into N when motor is running and stopped. I know several others with the same problem but haven't found a cure yet. sorry back to 117 talk.

[HD Street Performance]

I must be missing something. 141/145 from a 117" with a TW9,11.4 and a 55tb.
I guess I need to do a lot more reading....
Those seem like 120, 124" numbers but I'm likely just not reading it right.
You got me wanting a TW9.

Probably one of my biggest pet pieves.
Guys think they can pull components from a build that works and bring them around.
It's all about the combination, the sum of the parts, not good cam bad cam.

[Ridgerunr]

I must be missing something. 141/145 from a 117" with a TW9,11.4 and a 55tb.
I guess I need to do a lot more reading....
Those seem like 120, 124" numbers but I'm likely just not reading it right.
You got me wanting a TW9.

Head work very important part of the build.

[WYD OPN]

A bolt-in 117" SE kit with 9.9:1 compression that produces ~120/130 SAE (depending upon exhaust) when well-tuned is the real deal; especially with no reduction in gas mileage (apart from the extra temptation for more WOT blasts).  Time for some upgrades.

(And doing the bottom end while it's apart is good peace of mind.)

[RoadDawg]

A bolt-in 117" SE kit with 9.9:1 compression that produces ~120/130 SAE (depending upon exhaust) when well-tuned is the real deal; especially with no reduction in gas mileage (apart from the extra temptation for more WOT blasts). 

Agree. My numbers with recent head work: Chart shows SAE comparison. SAE: 122.03 hp, 131.13 tq. STD: 123.91 tq, 133.15 tq. Chart shows comparison before and after.

[YELLOWBIRD]

Agree. My numbers with recent head work: Chart shows SAE comparison. SAE: 122.03 hp, 131.13 tq. STD: 123.91 tq, 133.15 tq. Chart shows comparison before and after.

 


YB

[HD Street Performance]

It isn't going to be the same comparing an 11.4:1 build with a 9.9:1 CR build. Plus a cam with .630 lift and 250 dur. 42 overlap vs a .579 lift 246 dur. 31 overlap equipped motor.
So there will be those that will pull that data out of the context of the rest of the build, custom pistons heads tb exhaust etc, and think that's all that's needed to jump up another 20hp. Not the case.
The sum of the parts and a proper tune will work, not cherry picking.