Topic: Big bore upgrade? (Read 3316 times)

Jordan1200 · « **on:** October 14, 2019, 05:46:02 AM »

What is the newest year harley that the jugs and maybe the pistons will fit my 2010 SG?

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barrhill · « **Reply #1 on:** October 14, 2019, 03:40:23 PM »

Harley 117 kit
but you will need more
just finished my 117 for the second time

grc · « **Reply #2 on:** October 14, 2019, 05:52:05 PM »

If you're running a TC96 Street Glide, not a CVO, then you can go up to 110 cubic inches with the special kit Harley came out with that doesn't require boring the spigot holes in the cases for the cylinders. The 117 kit is designed to be used on a CVO110.

Jerry

Jordan1200 · « **Reply #3 on:** October 14, 2019, 06:25:00 PM »

Thanks all,
In order to do the 110 or 117 kit, wouldn't I need to upgrade the compensator as well?
Isn't the compensator the old style that was a modified one from the earlier models that there are so many issues with?
How about the heads with a 107 or 110 upgrade.
Would I need compression releases added with 107 or 110?
Is the crank able to handle those kits?

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Yellow09SERG · « **Reply #4 on:** October 14, 2019, 07:19:04 PM »

Are you starting out with a 103 or 110? That would make it easier to answer. If you are starting 103 then the HD 110 drop on kit would be the biggest you could go without boring the cases. If you are 103 and boring cases then you could go to whatever you want as long as the cases are bored for those cyl. If you are 110 then the 117 drop in kit would be a simple swap. Compression releases are stock on the 110 head. If you are 103 then your compression would dictate if you needed to add them. Crank is a crap shoot. Several are running stock at 125/125 give or take with no issues, while others have had all kinds of issues. Check your crank run out and see where you are at. The compensator is just an ongoing issue regardless.

Jordan1200 · « **Reply #5 on:** October 14, 2019, 07:56:36 PM »

I have a 96" currently.one thing that hasn't been mentioned is up to what model year parts can I use Jugs and pistons? Will later model 110 or 117 jugs and pistons filter my 2010?

Like newer 2017 etc.. don't think so but ig would be good to know what datd range I can look for parts...

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grc · « **Reply #6 on:** October 15, 2019, 08:49:44 AM »

Quote from: Jordan1200 on October 14, 2019, 07:56:36 PM

I have a 96" currently.one thing that hasn't been mentioned is up to what model year parts can I use Jugs and pistons? Will later model 110 or 117 jugs and pistons filter my 2010?

Like newer 2017 etc.. don't think so but ig would be good to know what datd range I can look for parts...

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If you are looking at standard production Harley parts, you can't just bolt on 110 jugs unless you modify the engine cases, so you are limited to no more than the 2016 model standard engines (not the CVO engines), the largest of which would be the 103. There are many options for increasing displacement, but if you are just looking to take parts from another stock Twin Cam you don't have a lot of choices. There are choices both from Harley and the aftermarket if you look at their nonstandard offerings. Perhaps if you explain exactly what you are trying to do someone will be able to give you a better answer.

Jerry

Jordan1200 · « **Reply #7 on:** October 15, 2019, 08:55:21 AM »

Thanks for the response. What about in the aftermarket? 107 would nice... I have been told that you can bore to.that size but no room left for oversize.
I wonder if there is a 107 jug that would be better for my 2010 that wouldn't leave the cylinder walls so thin..

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Rooster · « **Reply #8 on:** October 15, 2019, 09:48:12 AM »

Back in 08 one of my friends bought a used Ultra with a 96 motor and he just had the 110 kit installed shortly after he started having all the problems that all the CVO's were having. He traded for a Victory Cross Country and now has 140,000 miles with no rebuild or problems. Only thing was a broken belt early that only took him half an hour to replace. He still has the Victory and an Indian with about 60k on it. I know quite a few people are sad Polaris dumped the Victory line.

grc · « **Reply #9 on:** October 15, 2019, 01:59:00 PM »

Quote from: Jordan1200 on October 15, 2019, 08:55:21 AM

Thanks for the response. What about in the aftermarket? 107 would nice... I have been told that you can bore to.that size but no room left for oversize.
I wonder if there is a 107 jug that would be better for my 2010 that wouldn't leave the cylinder walls so thin..

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You can bore Harley cylinders to get to 107 in³, but that may not the most reliable way to do it. Ask one of the many experts we have on the site that actually do such modifications. Several aftermarket companies offer piston and cylinder kits for Twin Cams that will give you a 107 without boring cases or doing any bottom end or head work, they also offer more extensive kits that include head work, cams, etc. S&S, Zippers, Fuel Moto, and many more. This link will take you to the basic piston and cylinder kit from S&S for one example:
https://www.sscycle.com/products/107-bolt-in-big-bore-kit-for-2007-17-hd-big-twins-except-17-touring-silver-finish/

Jerry

Jordan1200 · « **Reply #10 on:** October 15, 2019, 02:14:28 PM »

Thank you

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HD Street Performance · « **Reply #11 on:** October 16, 2019, 08:29:13 AM »

107 is easily done and costs about half as much as the harley 110 bolt on kit. I use KB line2line coated pistons and they are very quiet and have OEM or better durability.

prodrag1320 · « **Reply #12 on:** October 19, 2019, 07:31:27 AM »

go 107,

Jordan1200 · « **Reply #13 on:** October 19, 2019, 08:36:18 AM »

Quote from: grc on October 15, 2019, 01:59:00 PM

You can bore Harley cylinders to get to 107 in³, but that may not the most reliable way to do it. Ask one of the many experts we have on the site that actually do such modifications. Several aftermarket companies offer piston and cylinder kits for Twin Cams that will give you a 107 without boring cases or doing any bottom end or head work, they also offer more extensive kits that include head work, cams, etc. S&S, Zippers, Fuel Moto, and many more. This link will take you to the basic piston and cylinder kit from S&S for one example:
https://www.sscycle.com/products/107-bolt-in-big-bore-kit-for-2007-17-hd-big-twins-except-17-touring-silver-finish/

Jerry

Thanks

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Jordan1200 · « **Reply #14 on:** October 19, 2019, 08:36:55 AM »

Quote from: HD Street Performance on October 16, 2019, 08:29:13 AM

107 is easily done and costs about half as much as the harley 110 bolt on kit. I use KB line2line coated pistons and they are very quiet and have OEM or better durability.

Thank you

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Jordan1200 · « **Reply #15 on:** October 19, 2019, 08:37:30 AM »

Quote from: prodrag1320 on October 19, 2019, 07:31:27 AM

go 107,

Thanks

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Jordan1200 · « **Reply #16 on:** October 19, 2019, 08:55:07 AM »

A few questions of things I am wondering about if I upgrade from my bone stock 96"

1) With any upgrade 103 or 107, should I upgrade the compensator on my 2010 first? They are bad from what I have read online in that era?

2) Should I get rid of the automatic primqry chain tensioner and replace it with a manual one like I had on my mod evo sportster?

3) Is there any truth about the cranks possibly have lots of run out in that era? Again you can't believe everything you see/read online.
Did the moco raise the allowed tolerance on cranks in that era to have less warranty claims?

I am wondering all this because I want to make sure the foundation I start upgrading is solid and won't cause issues up the thread with increased displacement and torque.

I would rather wait and fix foundation issues first if any of these things are correct. However if they are, then the question of things like do I go with SE compensator or Baker? SE manual primary adjuster or Baker?

I know guys lots of questions but I don't want problems down the road even on this stock 96"

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grc · « **Reply #17 on:** October 19, 2019, 09:13:22 AM »

The worst problems with the flywheel assemblies (crankshaft) occurred in 2007 and 2008, right after they redesigned the primary for the new Cruise Drive. At that time they also redesigned the crank and the process used to assemble them. So many flywheel assemblies failed that Harley changed the maximum runout tolerance measured at the pinion shaft from .003" to .012", in my opinion to keep from having to reject a huge percentage of their parts and pay a huge amount to replace flywheel assemblies in already produced bikes. We hear much less about crank failures these days, but that doesn't mean the current stuff is as good as the earlier stuff. I, and many others, recommend that anyone considering investing in engine upgrades at least measure the current runout of the crank before spending a lot of money on other things, especially if they plan to significantly increase output. It makes a lot of sense to just automatically upgrade the flywheel assembly if you plan on a major power increase.

JMHO - Jerry

Jordan1200 · « **Reply #18 on:** October 19, 2019, 09:42:31 AM »

Thanks for the response. When you said"t that time they also redesigned the crank and the process used to assemble them."
Is the 2010 subject to this process?
Or was it 2007-2008 only where the issues were?
Is that high tolerance what my 2010 is subject to as well?

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HD Street Performance · « **Reply #19 on:** October 19, 2019, 10:56:13 AM »

The process was automated and still is the same. The press fit improved after 2008. Doesn't mean there will be any less run-out just means it has a better chance of staying put. The latest revision of the compensator is 2014. Replace yours after inspecting then decide.

Jordan1200 · « **Reply #20 on:** October 19, 2019, 11:07:11 AM »

Quote from: HD Street Performance on October 19, 2019, 10:56:13 AM

The process was automated and still is the same. The press fit improved after 2008. Doesn't mean there will be any less run-out just means it has a better chance of staying put. The latest revision of the compensator is 2014. Replace yours after inspecting then decide.

Does the 2014 fit 2010?

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HD Street Performance · « **Reply #21 on:** October 19, 2019, 11:42:19 AM »

Yes absolutely. It is just a revision

Author Topic: Big bore upgrade? (Read 3316 times)