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Which Case Do You Prefer


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Discussion Starter #1 (Edited)
Now here is going to be a good discussion I hope. As I had said, I am building a 117" engine and looking for as much input from people as I can.

For this poll, I am curious on which cases I should go with? I struggle with the criteria that I have set and for this engine, the main criteria is that the engine must be damn near bulletproof. I have heard some horror stories about HD cases as many say that they are just weak but they are very affordable. On the other hand, I haven't heard enough about the S&S cases to make a decent decision about them. This makes me want to steer from them because of my ignorance, and of course the price tag that they want for them, but I will spend the extra if the S&S cases are really that much more superior than that of HD's.

So please, if you have some experience with this subject, and I don't care how little experience you have with them, please vote and comment as this is an important aspect of the build and I want to get it right. Please explain your choice the best you can, simply voting only doesn't really help much.

Thanks gentleman.
 

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I'm certainly not the best person to speak on this subject. I've never heard anything bad about the HD cases except for the internals. The S&S and Ultima I would assume come built to handle the greater HP & TQ whereas the HD crank and bearings will ideally need to be welded, trued, balanced, and the Timken bearing installed to safely handle the added power as well as being bored to accept the 117" cylinders.

By the time you factor the cost of what you need to do to the HD bottom end you might be better served with the S&S or Ultima.
 

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I have no advice to give but, I will tag this thread. I've thought about a 117 Touring type of build myself. If I go this route I will most likely use "T-Man stuff" but, as Hullhorr said by the time you build out the bottom end??? I don't know maby I'm dollars ahead just buying Harleys 120r.

I'll be watching this thread closely.

Nevadasun
 

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+ 1 Delkron
For sure! If building a single cam engine from scratch I'd go Delkron.

Look at most drag bikes and you see Delkron or S&S. No Ultima... Delkron don't make twin cam cases. Compatible, but they are 4 cam. (as far as I'm aware that is...)

If I was building a motor from scratch, S&S would be automatic choice.
 

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If in fact we were to ever build another drag bike, S&S cases would be our choice here. No brainer.
Our ex-AHDRA Mod Class bike(still sits in the retail area) ran House of Horsepower cases.
THE first outfit, to EVER, offer a 356-T6 aluminum alloy casting for these bikes, but long, long gone now.
We we racing ECRA, and AHDRA, when some of these johnny-come-lately shops were playing with their skateboards..............:)
Scott
 
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nothing wrong with stock cases for big inch street TC`s.we`ve built TONS of 124" (140+HP) motors using stock cases,not one problem.as far as drag cases go,most seroius drag motors use billit cases (our gas & nitro bikes have since the late 90`s (our smaller motors we ran in the 80`s & early 90`s did use delkron though)
 

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Discussion Starter #8
I'm certainly not the best person to speak on this subject. I've never heard anything bad about the HD cases except for the internals. The S&S and Ultima I would assume come built to handle the greater HP & TQ whereas the HD crank and bearings will ideally need to be welded, trued, balanced, and the Timken bearing installed to safely handle the added power as well as being bored to accept the 117" cylinders.

By the time you factor the cost of what you need to do to the HD bottom end you might be better served with the S&S or Ultima.
I suppose that I should have also said that I am not planning on running HD wheels. For this build I have chosen to run Hoban Brothers crank and rods and have them press the Timken in and have it ready for gear drives.

nothing wrong with stock cases for big inch street TC`s.we`ve built TONS of 124" (140+HP) motors using stock cases,not one problem.as far as drag cases go,most seroius drag motors use billit cases (our gas & nitro bikes have since the late 90`s (our smaller motors we ran in the 80`s & early 90`s did use delkron though)
We have a some common friends and one of them is saying that the weak spot in the S&S cases is some sort of center bolt. Can you explain this more? Tell us why this is such a weak spot?
 
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I suppose that I should have also said that I am not planning on running HD wheels. For this build I have chosen to run Hoban Brothers crank and rods and have them press the Timken in and have it ready for gear drives.



We have a some common friends and one of them is saying that the weak spot in the S&S cases is some sort of center bolt. Can you explain this more? Tell us why this is such a weak spot?
never had a problem with S&S cases
 

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Discussion Starter #12
I am closer to saying that I think that if builders give a thumbs up to HD cases, I must admit that I will most likely go that way. I am not afraid to admit it, but I like most of Harley's stuff. Their stuff just works.

I have a long time to decide this so please, keep adding to the poll and telling me your experiences with this subject. I am listening. :D
 

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Something along the lines of how many center bolts that it has???:confused: 1 or 2 or 2 or 4?:confused: I will have to go back and find the post I will get back to you on this.:eek:

S&S cases have MANY times the tensile strength of a set of H-D Mercury-Marine castings, and I was being a wise-guy with my question..........no need to look for a post in an attempt to convince me that someone suspects something wrong with S&S cases. Not so.:)
Scott
 

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I am closer to saying that I think that if builders give a thumbs up to HD cases, I must admit that I will most likely go that way. I am not afraid to admit it, but I like most of Harley's stuff. Their stuff just works.

I have a long time to decide this so please, keep adding to the poll and telling me your experiences with this subject. I am listening. :D
We been boring H-D cases since the beginning of our business, and even before, at our other business, Stockbridge Valley Machine & Tool Co.
On only 2 occasions, both in Shovelhead application have we witnessed a case failure.
One was a set 1975 H-D cases that we installed a 97" 3 13/16" bore kit into, and the other was when we had built a 92" 4 3/4" stroker, 13.0 cr, with a Lieneweber L-6 cam, S&S B.
Grenaded the f/cylinder at about the 1000 ft mark at a test and tune session at ESTA Safety Park, Cicero, N.Y.
Found everything, even the pushrod O-rings...........except the wrist pin.:)
Scott
 
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i agree with scott,your not going to have a case failure,we`ve never seen one (with cases that were properly machined),but if theres another problem,broke rod or some othe catastrphic inner breakage in the motor,it dosnt matter what cases your running,their gunna break
 

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Up to and including a 124 sized engine, I'd stick with the stock Harley or the SE case for any street ridden Harley.
There's not much material left between the spigots after being prepped for the 4.125 in. cylinders.
The use of a through bolt on the upper center bolt position is about all you can do to help strengthen this area.
For a normally aspirated street engine using the lefty bearing on the right side, Timkin conversion on the primary side, and the through bolt is about all they need. Using the S&S piston oilers gains a small amount of clearance with the piston on strokes over 4.375.

I don't claim to have near the experience that others do, but this has been my own observations.
 

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Discussion Starter #18
Up to and including a 124 sized engine, I'd stick with the stock Harley or the SE case for any street ridden Harley.
There's not much material left between the spigots after being prepped for the 4.125 in. cylinders.
The use of a through bolt on the upper center bolt position is about all you can do to help strengthen this area.
For a normally aspirated street engine using the lefty bearing on the right side, Timkin conversion on the primary side, and the through bolt is about all they need. Using the S&S piston oilers gains a small amount of clearance with the piston on strokes over 4.375.

I don't claim to have near the experience that others do, but this has been my own observations.
Ok, this is what my friends were talking about with the cases, that through bolt. ;) Thanks. This lefty bearing, is that a brand????
 

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It's the case bearing.
Listed in the SE catalog.
It can be installed on pinion or primer side.

The SE case comes with a lefty in both positions.

Again, I'm making my own observations when I built my 124.
I am by no means an expert.
 

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Discussion Starter #20
It's the case bearing.
Listed in the SE catalog.
It can be installed on pinion or primer side.

The SE case comes with a lefty in both positions.

Again, I'm making my own observations when I built my 124.
I am by no means an expert.
Hey, I appreciate it very much. Knowledge is power my friend. :cool: I will take a close look at it. :cool:



I have to say that I was suspecting that S&S would run away and run away fast with this poll. Of course there isn't a lot that have voted yet. I will have to say that I am leaning towards the HD still.
 
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