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[WYD OPN]

Also noteworthy a B motor carries a slight disadvantage in hp and tq when compared to a non balancer motor

I know this has always been the established fact, but my experience has always been that As seldom put out much different numbers than identical combos for Bs.  I've basically noticed As will have no more than 1-2 more hp, but the Bs will always have 1-2 more tq.

It seems exhaust is a bigger variable than A/B in identical configurations for a build.  The As seem to have a bit better overall dyno chart; but that would again seem to be more related to the differing general exhausts for bagger and softail.

What have you consistently seen?

[cvo1717]

This thread is full of great info.  My 117 kit arrives tomorrow. I need to send out the jugs for Diamond Cut (to match my heads) and as soon as they come back I will be taking everything to Rosas for the build.

Andrew will hook you up  :2vrolijk_21:you will be very happy I am ,he will probably do the same thing to your heads that he did to mine .

[RoadDawg]

I know this has always been the established fact, but my experience has always been that As seldom put out much different numbers than identical combos for Bs.  I've basically noticed As will have no more than 1-2 more hp, but the Bs will always have 1-2 more tq.

It seems exhaust is a bigger variable than A/B in identical configurations for a build.  The As seem to have a bit better overall dyno chart; but that would again seem to be more related to the differing general exhausts for bagger and softail.

What have you consistently seen?

Interesting. My dealer put a SE 117 kit in a new Dyna S (A engine) and it only pulled 2 hp and 1 tq over my Breakout (B engine). Now with heads I've pulled ahead of the Dyna

[yobtaf103]

Great stuff Roadawg ,followed  your  build
 just thought  should mention on a Breakout you got a heavy mass at the rear to get turning the drum, so not comparing eggs with eggs regarding other models ?


Thinking of getting 92500051 kit, whats the MLS head gasket thickness it comes with ?

[RoadDawg]

Great stuff Roadawg ,followed  your  build
 just thought  should mention on a Breakout you got a heavy mass at the rear to get turning the drum, so not comparing eggs with eggs regarding other models ?


Thinking of getting 92500051 kit, whats the MLS head gasket thickness it comes with ?

That's true too. The 240 rear hurt a little.

[HD Street Performance]

I know this has always been the established fact, but my experience has always been that As seldom put out much different numbers than identical combos for Bs.  I've basically noticed As will have no more than 1-2 more hp, but the Bs will always have 1-2 more tq.

It seems exhaust is a bigger variable than A/B in identical configurations for a build.  The As seem to have a bit better overall dyno chart; but that would again seem to be more related to the differing general exhausts for bagger and softail.

What have you consistently seen?

Because we are only talking 2% or so it is hard to find real data because as you said the influence of different exhaust pipes creates noise in the data.

[WYD OPN]

Interesting. My dealer put a SE 117 kit in a new Dyna S (A engine) and it only pulled 2 hp and 1 tq over my Breakout (B engine). Now with heads I've pulled ahead of the Dyna

I'd still speculate that exhaust is more the reason for any slight differences between identical builds.  And you're turning a 240 rear, so there's that.

I'm content to know that the 117" SE kit with head work is going to put down 120/130 in any CVO, regardless of A/B or exhaust.

By comparison, the BMW K1600GTL/GT six-cylinders are putting down ~123/109.  Akra exhaust gives 1-3 hp/tq increase.
The Honda GL1800 six-cylinder models are putting down ~102/112.  Exhausts are slip-ons for noise, with little added to output.

For power cruisers, the VMAX and Diavel are stronger in comparison to Softails and Dynas with a 117".  V-Rods and M109s would have a hard time showing taillights to any FX 117" H-D.

Well done, I say.

[WYD OPN]

Because we are only talking 2% or so it is hard to find real data because as you said the influence of different exhaust pipes creates noise in the data.

Understood and agreed.  Thanks.

[RoadDawg]

Thinking of getting 92500051 kit, whats the MLS head gasket thickness it comes with ?

I think it's a .040 but not sure. I went with .030 with the shaved heads.

[NJOrangeEagle]

Special thank you to Stephanie and Tim @ Custom Engraving Limited for the final touch to my 117 build EXCELLENT Workmanship.

That looks amazing. Do you have a link to their site?

[NJOrangeEagle]

Andrew will hook you up  :2vrolijk_21:you will be very happy I am ,he will probably do the same thing to your heads that he did to mine .

Good to hear  My kit arrived yesterday so will ship out the jugs for diamond cut on Tuesday (I am away for the long weekend). Can't wait to get started with this.

[HD Street Performance]

This 117 drop on uses stock heads and a domed piston to get to 10.6, the better way to gain compression vs milling the 110 heads, with 259e cams, boarzilla, SE58 tb.

[WYD OPN]

This 117 drop on uses stock heads and a domed piston to get to 10.6, the better way to gain compression vs milling the 110 heads, with 259e cams, boarzilla, SE58 tb.

Very nice curve and peak numbers, and 6200rpm rev limit.

[FLSTFI Dave]

That is a real nice torque curve with the 259E on that build Don.  Did you do head work on the heads?

[HD Street Performance]

Heads are stock. But I should point out the latest HD castings are better that the earlier versions. The new ones no longer have cutback behind the intake valve seat rings so there is some meat to work with. These stock heads flow about 285 cfm IME