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Author Topic: 103 builds, recommend big bore kits, best bang for your buck, questions  (Read 19272 times)

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prodrag1320

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if your looking for good HP/TQ but still truly tour & do long distances on the bike,i would really look into doing a 124",even in a very mild build,your going to do more than a aggressive build 110 and have tons more reliability.we do a lot of 124" here,starting at 3500.00,feel free to give a call

MCE

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Kirby,
Are those the heads you're using on the 124s? I'm curious b/c we were thinking of trying
those on a 124.

(+1 Adding displacement is the most reliable way to increase TQ)

Thanks,
-Matt
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MCE

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The s&s 110 bolt on cylinders are no longer steel....some form of centrifical cast iron

If you want an honest 130/130 build a 113/117

Last one that left here with a pretty mild cam made 129/141 with a junk eBay Dan Moto pipe

John, was it an SE255 cam set by chance? haha
Just kidding...
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prodrag1320

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Kirby,
Are those the heads you're using on the 124s? I'm curious b/c we were thinking of trying
those on a 124.

(+1 Adding displacement is the most reliable way to increase TQ)

Thanks,
-Matt

No,just a old pic.I like the 110 heads for 124 builds.I have use many 103 heads with very good results though

MCE

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Thanks for the reply.

We want to try some 103 casting on a 124 (or 117) to capture some data.

The models I've made seem to suggest that they can work just fine. I just
want to try it and see if my theories are correct.
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prodrag1320

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just as the 110 heads chamber is too big for most smaller builds,the 103 heads are too small for most 124 builds.not a deal stopper by any means,just more work for each build

MCE

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just as the 110 heads chamber is too big for most smaller builds,the 103 heads are too small for most 124 builds.not a deal stopper by any means,just more work for each build

Part of the plan is to open up the chamber Kirby. I'm going to un-shroud the valve(s) while adding chamber volume.
No surface milling in the cards (other than maybe a cleanup cut). We'll get the chamber figured out as we get closer.

Thanks!

ps: The goal is to make a Torque monster for street/cruising. (not a high HP engine, but we'll see where that ends up)
« Last Edit: August 29, 2018, 10:07:41 AM by MCE Performance »
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Anastasia_05

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can any one send me a link to what the think the best 110 kit is or what I would need.  2005 Fatboy cvo.  Will my heads work this with if I get them massaged over.  Or do I need a new set?  I contacted fuel Moto and this was there response.  Quote 

"Brandon
 
Thanks for reaching out to Fuel Moto. Sorry to say we do not have a 110 kit for your 2005 Softail. We do not have a piston that mates up with the cylinder head used on the 2005 CVO 103.
 
Please get back to me with any questions.
 
Thank you.........Bob"

As always Many thanks fellas !!!!!!
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Anastasia_05

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Fellas here what I was thinking about getting.  Please give me some feed back or point be in a better direction.  See attachment.

Also need to know what I need to do with my heads with this or if I can use them.  Bob from Fuel Moto says the heads in that kit wont work on my bike.

Thanks Brandon
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MCE

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Brandon,

Get yourself a set of 103 take-offs and have them worked over. I've done (the machine work on) quite a few,
they get anywhere between 126/126 to 130/130 depending on the pipes and TB used.

The engine builders used the S&S conversion cylinders on those builds.
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Anastasia_05

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what do you think of that Kit above
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Anastasia_05

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buy the time I buy a set of heads for evil bay for 200, have them massaged I'm guessing 500 to 8 or 900 maybe. then throwing the goodies in them.  Would I be better off just buying a new set of S and S heads done up?

Many thanks
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MCE

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I hate to say this, but S&S' heads aren't that good. in fact they're terrible (their "Super Stock" heads anyway) 
You'd have to put a bunch of work in them to make em decent. So, in short, NO!
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Anastasia_05

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thank you sir I appreciate your honesty.   
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MCE

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That was really hard for me to say publicly, but I have to be honest. Generally speaking, S&S' products are
very very good. But those Super Stock heads are severely lacking. I don't know what they were thinking.
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