S&S and HD bolt on 110” piston and cylinder builds.

[harpwrench]

"You can only go so big with the intake valve on 103 wetheads."
Why? The chambers can be opened up. You can't go huge but a 1.9 or 1.95 is possible.

Right, it has 1.95 valves now, water jackets limit valve size.

[C-Cat]

What are the usual or approximate deck height #'s for each kit? I know my S&S was down but didn't measure. Too much of a rush to be up and running.

Last HD kit we did was 0.010" and 0.011" down the hole.

that's about what I would expect

I was surprised @ harpwrench's .005

I'm thinking of buying a kit and just knocking .005 out of the box off just to avoid assembly 2x - should get me pretty close

I asked that question about trimming the cylinders afterwards. I was told it might be risky on the 110 drop in, if it  was S&S 4.125 cylinders no problem

[kd]

If your shooting for .030 head gasket at .005 in the hole, a .027 Cometic will leave you at .032.  No fuss, no muss.

[C-Cat]

I called Cometic today and the .027 are 4-5 weeks out. I'm switching my .045 that  actually measured .041 to an .030 trying to hit 205 ccp. I'm just shy of 195 currently running
TMan , 590 PS2'S

[shindig]

I called Cometic today and the .027 are 4-5 weeks out. I'm switching my .045 that  actually measured .041 to an .030 trying to hit 205 ccp. I'm just shy of 195 currently running
TMan , 590 PS2'S

Right where that cam likes it...

[shindig]

I found sticky rods when I pulled the 103 down so it got S&S flywheels

how many miles at that point?

A little over 50k

not too bad

you weren't tempted to put a longer stroke in it?

You can only go so big with the intake valve on 103 wetheads. My heads were already done for 110" and I prefer a right-side hp curve. I thought about 117" and maybe kinda regret not doing that, but honestly it's really fun and reliable as it sits. For the same curve in a large ci I'd probably need 110 heads

I did a 117.  Don did my heads.  I used stock head castings, 88 or 96 can't remember.  I am totally happy with the outcome.  I can't imagine for the cost of 110 heads I would be that much more happier....

[C-Cat]

You may be less happy with the bigger heads especially in a touring build. Reworked stockers have great throttle
Response and nice to have on a heavy bike.

[Thermodyne]

I just started with 103 inch tune from the TMax library and then let it correct the fuel settings.  Same stroke, so it only took a few short runs for that to sort out.  After that I had to do some work on the spark maps to get the detonation under control, still needs some booster when the weather is hot.  Decel fuel is set to off.  The dyno pull was more than a year later, just a "for my own curiosity" pull.  That and proving to a certain ex Harley tech that the drop in TS kit was just as good as his S&S builds.   

Other than going with the 585 gear drive cams, the heads were cleaned up and I used billet rocker supports. The jugs were trimmed to .000. 



The exhaust is a Jackpot 2-1-2 with a full size cross over and V&H high output cans, so basically straight through.  Intake is an S&S Stealth that fit the TB opening.  I just run a dog bowl on it.

Other than breaking stuff in the drive line, the only big issue I've had with it is heat, it's always run pretty high oil temps.  And that was with a Reefer oil cooler and jug fans.  This spring I put a tank lift on it and that little inch and a half lift lowered the oil temps by 20-30f.  So now I guess all that is left is to set the primary up with some hard to break stuff and put a roller chain on the back.       

[838]

What are the usual or approximate deck height #'s for each kit? I know my S&S was down but didn't measure. Too much of a rush to be up and running.

Last HD kit we did was 0.010" and 0.011" down the hole.

that's about what I would expect

I was surprised @ harpwrench's .005

I'm thinking of buying a kit and just knocking .005 out of the box off just to avoid assembly 2x - should get me pretty close

I asked that question about trimming the cylinders afterwards. I was told it might be risky on the 110 drop in, if it  was S&S 4.125 cylinders no problem

What was the risk?

[C-Cat]

Spigots and liners are thin

[Don D]

No risk done with the right tooling

[C-Cat]

Good to know. Have you done any and if so how much needed to be trimmed on either s&s or SE?

[kd]

Good to know. Have you done any and if so how much needed to be trimmed on either s&s or SE?

It's "measure" twice, cut once.   No 2 fresh combinations can be exactly the same every time.

[Don D]

Good to know. Have you done any and if so how much needed to be trimmed on either s&s or SE?

I trim most of them I sell but I have local shops that take accurate measurements so I take an accurate cut. I don't venture to say what is typical cut because they vary. Rod lengths vary. The cylinder lengths are pretty consistent. To get the bore true (perpendicular) to the decks it sometimes takes cutting some off the top and bottom. In cases when I check the cylinders for size, straightness, and out of round in plates the Harley 110 cylinders are closer to spec, sorry to say. I am using Sunnen gauging.

[Tail Ridr]

"You can only go so big with the intake valve on 103 wetheads."
Why? The chambers can be opened up. You can't go huge but a 1.9 or 1.95 is possible.

Right, it has 1.95 valves now, water jackets limit valve size.

Is a 1.98 intake a possible or is that pushing the limit? I thought the water jackets were around the exhaust valve side...?

[Don D]

Possible, yes. But the bigger question, is there a measurable increase in flow?