What's needed to go 124"?

[Mainecat]

I have a 17 RGS with an SE 114" stage 3 kit, a TTS 200 cam, SE 10 disc clutch, SE 64TB w/ported manifold, SE heavy breather, fullsac header and forsch slip on's-

What is necessary to upgrade to a 124"?  Different cam plate & pump?  Anything else? Guessing my cam is fine.

[rigidthumper]

Drop on 4.25 bore kit, AIM spdr clutch hat, retune.

[Mainecat]

No cam plate or pump needed?  Stock is fine?

[Shoreglide]

No need to even open up the cam chest if you're just going to 124 and keeping that cam.

[shindig]

Just cylinders, pistons, and top end gaskets if you are keeping the same cam.  And of course a new tune....

[Vision]

I would not do it without swapping out the oil pump to a Feuling race oil pump and cam plate.  I do t trust the Harley oil pump or the new seal.  I'd also take the opportunity to sure up the rocker arms with Feuling rocker arm shafts. 

I believe the Fuel Moto kits comes with pre gapped piston rings and honed cylinders, which can Safe you some time.

[HD/Wrench]

Drop on kits are all honed , we as most shop will pre gap the rings not huge deal .

The HD pump with seal on the back works very well , if you want upgrade pump you can not needed in my opinion .  Check the piston jet oilers though .

[Mainecat]

Drop on kits are all honed , we as most shop will pre gap the rings not huge deal .

The HD pump with seal on the back works very well , if you want upgrade pump you can not needed in my opinion .  Check the piston jet oilers though .

Thanks!

[Mainecat]

Just an update.  Revolution 124" installed with original factory 17 oil pump still in place.  Piston oil jets were loose, however tightened up and loctite added to screws.  Sumped in less than 300 miles after riding around 3,500 rpm's for about 40 minutes straight.  Added the Fueling race pump and cam plate- 1,500 miles later, so far no sumping.

[moose]

glad it's ok

there is nothing you can't do with cubic dollars

[les]

While in there, I'd replace the rocker arm bolts with the Feuling studs and nuts kit.  Might want to replace the stock H-D lifter cuffs with the S&S stronger cuffs.  Wouldn't you also need to upgrade the injectors to something with higher grams per second?

[BVHOG]

Easily and very affordably done with the Daytona cylinders available through drag as well as the Wiseco black series pistons. Need to clean parts and gap rings and you are good to go. Don't be fooled by companies that simply mill off the little "D" logo on the cylinders and then come on these forums and claim to use S&S.

[Jamie Long]

Easily and very affordably done with the Daytona cylinders available through drag as well as the Wiseco black series pistons. Need to clean parts and gap rings and you are good to go. Don't be fooled by companies that simply mill off the little "D" logo on the cylinders and then come on these forums and claim to use S&S.

I'm assuming you are referring to FM. Relative to your statement "Don't be fooled" is the fact each of the M8 big bore kits we offer clearly lists on our website which specific cylinders are supplied with each kit and where they are sourced. S&S has been our primary supplier since late last year.     

[BVHOG]

Easily and very affordably done with the Daytona cylinders available through drag as well as the Wiseco black series pistons. Need to clean parts and gap rings and you are good to go. Don't be fooled by companies that simply mill off the little "D" logo on the cylinders and then come on these forums and claim to use S&S.

I'm assuming you are referring to FM. Relative to your statement "Don't be fooled" is the fact each of the M8 big bore kits we offer clearly lists on our website which specific cylinders are supplied with each kit and where they are sourced. S&S has been our primary supplier since late last year.   

So why machine off the D?   I think it's pretty clear you don't own a foundry (nor does S&S)and the Daytona cylinders have been excellent.  This must be the ad you refer to. https://www.fuelmotousa.com/i-23898140-fuel-moto-m8-124-piston-cylinder-kit-10-75-compression-for-107-engines.html  Says globally sourced and I have used them and they are a great item. Nowhere do I see S&S mentioned.  All I can say is what is wrong with a little honesty in advertising? Why come on here and say you use mostly S&S then the kits advertised are "Global"  Just be honest, they are Daytona cylinders probably sourced through Drag Specialties

[Jamie Long]

Easily and very affordably done with the Daytona cylinders available through drag as well as the Wiseco black series pistons. Need to clean parts and gap rings and you are good to go. Don't be fooled by companies that simply mill off the little "D" logo on the cylinders and then come on these forums and claim to use S&S.

I'm assuming you are referring to FM. Relative to your statement "Don't be fooled" is the fact each of the M8 big bore kits we offer clearly lists on our website which specific cylinders are supplied with each kit and where they are sourced. S&S has been our primary supplier since late last year.   

So why machine off the D?   I think it's pretty clear you don't own a foundry (nor does S&S)and the Daytona cylinders have been excellent.  This must be the ad you refer to. https://www.fuelmotousa.com/i-23898140-fuel-moto-m8-124-piston-cylinder-kit-10-75-compression-for-107-engines.html  Says globally sourced and I have used them and they are a great item. Nowhere do I see S&S mentioned.  All I can say is what is wrong with a little honesty in advertising? Why come on here and say you use mostly S&S then the kits advertised are "Global"  Just be honest, they are Daytona cylinders probably sourced through Drag Specialties

Our most popular kits by far are the FM complete 124 & 128 kits which use cylinders that are supplied by S&S, it is clearly stated on our website these cylinder are "Made in Viola, WI USA" 124: https://www.fuelmotousa.com/i-23897757 128: https://www.fuelmotousa.com/i-23897756
All complete 124/128 kits sold after about December 2018 includes cylinders sourced from S&S. They are easily identified by the FM badge.

As for the kit you reference, these 124/128 piston/cylinder kits use "globally sourced aftermarket cylinders" as noted. We sourced these cylinders before they were even available from Drag. There are several reasons the "D" is machined off

[BVHOG]

Easily and very affordably done with the Daytona cylinders available through drag as well as the Wiseco black series pistons. Need to clean parts and gap rings and you are good to go. Don't be fooled by companies that simply mill off the little "D" logo on the cylinders and then come on these forums and claim to use S&S.

I'm assuming you are referring to FM. Relative to your statement "Don't be fooled" is the fact each of the M8 big bore kits we offer clearly lists on our website which specific cylinders are supplied with each kit and where they are sourced. S&S has been our primary supplier since late last year.   

So why machine off the D?   I think it's pretty clear you don't own a foundry (nor does S&S)and the Daytona cylinders have been excellent.  This must be the ad you refer to. https://www.fuelmotousa.com/i-23898140-fuel-moto-m8-124-piston-cylinder-kit-10-75-compression-for-107-engines.html  Says globally sourced and I have used them and they are a great item. Nowhere do I see S&S mentioned.  All I can say is what is wrong with a little honesty in advertising? Why come on here and say you use mostly S&S then the kits advertised are "Global"  Just be honest, they are Daytona cylinders probably sourced through Drag Specialties

Our most popular kits by far are the FM complete 124 & 128 kits which use cylinders that are supplied by S&S, it is clearly stated on our website these cylinder are "Made in Viola, WI USA" 124: https://www.fuelmotousa.com/i-23897757 128: https://www.fuelmotousa.com/i-23897756
All complete 124/128 kits sold after about December 2018 includes cylinders sourced from S&S. They are easily identified by the FM badge.

As for the kit you reference, these 124/128 piston/cylinder kits use "globally sourced aftermarket cylinders" as noted. We sourced these cylinders before they were even available from Drag. There are several reasons the "D" is machined off

Fair enough, if there are several just give us one that makes sense.

[Jamie Long]

Fair enough, if there are several just give us one that makes sense.

Some of these cylinders required a machine op. This identifies the cylinder as finished, we also did the same thing on the first 4.250 cylinders we were using which were re-sleeved SE cylinders. 

[BVHOG]

Fair enough, if there are several just give us one that makes sense.

Some of these cylinders required a machine op. This identifies the cylinder as finished, we also did the same thing on the first 4.250 cylinders we were using which were re-sleeved SE cylinders.

Seems the logical place to machine a mark, right on top of the brand

[motolocopat]

Jeez it's not as if FM is claiming to have manufactured them in house.
And what does this have to do with the OP anyway?

[Hillside Motorcycle]

Jeez it's not as if FM is claiming to have manufactured them in house.
And what does this have to do with the OP anyway?

If it isn't them, it is someone else.....and nothing to do with the OP, you are correct.