HarleyTechTalk

Technical Forums => Milwaukee-Eight => Topic started by: Mainecat on April 26, 2019, 06:39:10 PM

Title: What's needed to go 124"?
Post by: Mainecat on April 26, 2019, 06:39:10 PM
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.
Title: Re: What's needed to go 124"?
Post by: rigidthumper on April 27, 2019, 06:15:00 AM
Drop on 4.25 bore kit, AIM spdr clutch hat, retune.
Title: Re: What's needed to go 124"?
Post by: Mainecat on April 27, 2019, 09:47:02 AM
No cam plate or pump needed?  Stock is fine?
Title: Re: What's needed to go 124"?
Post by: Shoreglide on April 27, 2019, 03:09:39 PM
No need to even open up the cam chest if youre just going to 124 and keeping that cam.
Title: Re: What's needed to go 124"?
Post by: shindig on April 29, 2019, 09:15:07 AM
Just cylinders, pistons, and top end gaskets if you are keeping the same cam.  And of course a new tune....
Title: Re: What's needed to go 124"?
Post by: Vision on April 29, 2019, 09:03:35 PM
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.  Id 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.

Title: Re: What's needed to go 124"?
Post by: HD/WRENCH on April 30, 2019, 05:52:17 AM
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 .
Title: Re: What's needed to go 124"?
Post by: Mainecat on April 30, 2019, 07:10:51 PM
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!
Title: Re: What's needed to go 124"?
Post by: Mainecat on September 09, 2019, 10:18:30 AM
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.
Title: Re: What's needed to go 124"?
Post by: moose on September 09, 2019, 01:08:02 PM
glad it's ok

there is nothing you can't do with cubic dollars
Title: Re: What's needed to go 124"?
Post by: les on September 09, 2019, 01:37:09 PM
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?
Title: Re: What's needed to go 124"?
Post by: BVHOG on September 10, 2019, 07:13:24 AM
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.
Title: Re: What's needed to go 124"?
Post by: Jamie Long on September 10, 2019, 08:10:22 AM
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.     
Title: Re: What's needed to go 124"?
Post by: BVHOG on September 10, 2019, 01:47:14 PM
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
Title: Re: What's needed to go 124"?
Post by: Jamie Long on September 10, 2019, 02:26:41 PM
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



Title: Re: What's needed to go 124"?
Post by: BVHOG on September 11, 2019, 06:41:57 AM
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.
Title: Re: What's needed to go 124"?
Post by: Jamie Long on September 11, 2019, 09:27:10 AM
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. 
Title: Re: What's needed to go 124"?
Post by: BVHOG on September 11, 2019, 02:01:16 PM
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
Title: Re: What's needed to go 124"?
Post by: motolocopat on October 06, 2019, 06:50:32 PM
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?
Title: Re: What's needed to go 124"?
Post by: Hillside Motorcycle on October 07, 2019, 04:19:45 AM
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. :up: