Thoughts on throttle body for a 124

[08flstf]

Am considering a bolt on 124 kit for my M8. Looking at S&S and T-man. Was wondering what some of you thought about the difference in the Screamin Eagle 64mm vs the HPI 62mm. I think it's about $200 more give or take for the HPI. Just wondering what some of you with more experience than me thought about the two different throttle bodies. Also with the different 124 kits, interested in your thoughts on the benefits of the thicker oil rings offered on some kits vs others. I don't mind spending a little more if there is a noticeable difference but I don't want to spend more just for the sake of saying I spent more.

[yobtaf103]

Just watched T-man 124 cyl video on his FB, longer cyl liner for piston stability at bottom of stroke !

[BigT]

The SE throttle body seems to support at least 150hp but needs the manifold ported. Use the $200 savings and send it to Ward Performance. The attached picture is an un-ported manifold.

[jbroski]

I second bigT advice

[jbroski]

same day t body testing hpi vs se with ward manifold on a 117 from last year, used same one on a 124 and 137

[08flstf]

Thanks for the help.

[1FSTRK]

same day t body testing hpi vs se with ward manifold on a 117 from last year, used same one on a 124 and 137

Excellent post, info and data.
Thanks for posting

[HD/Wrench]

THAT is what I like to see .  Nice gains back to back testing 

[schamberin5150]

same day t body testing hpi vs se with ward manifold on a 117 from last year, used same one on a 124 and 137

What heads were on this motor?

[MakoHD]

Has anyone done more testing?

[jbroski]

same day t body testing hpi vs se with ward manifold on a 117 from last year, used same one on a 124 and 137

What heads were on this motor?

stock valve ward cnc ported, stock castings

[08flstf]

Well I procrastinated long enough and started my 124. Ended up going with the S&S 124 kit and the SE 64 tb and sent it to Ward Performance to have the intake ported. Sticking with stock heads and the S&S 475 I already had, and switching to a D&D billetcat. Going to get it tuned Thursday.

[yobtaf103]

Well I procrastinated long enough and started my 124. Ended up going with the S&S 124 kit and the SE 64 tb and sent it to Ward Performance to have the intake ported. Sticking with stock heads and the S&S 475 I already had, and switching to a D&D billetcat. Going to get it tuned Thursday.

[Vision]

Any results yet?

[08flstf]

Tuned in at 136/140 and then I broke 3rd gear on my first ride. Have to get trans fixed/replaced then I can give an assessment on how she runs.

[To The Max]

Hi Guys , i have a 124 with 475 cam.  thinking of putting a  se 65 m throttle body would getting ward to port the manifold or just go with the stock se manifold. any advice would be handy. Max

[Sunny Jim]

My 5 cents worth - if you are not changing Cam profile, porting the heads etc , the gains are minimal and they are probably all at the horsepower end.
Waste of $$$$
Check out he dyno sheets

[To The Max]

Was looking for the difference between s e and the ward version but I think you right on my build it might not be worth it . Max

[Don D]

I have seen a big mismatch with the SE manifold at the head opening.

[To The Max]

What manifold is to larger or smaller or just out of alignment? Thanks Max

[Deye76]

I have seen a big mismatch with the SE manifold at the head opening.

Oh great, now I find out. Is it any better the plastic one? 

[Don D]

It is just something to check. This may not be chronic. I have one now that will be getting welded to match the SE CNC head opening. About 1/8" off on one side.

[HogMike]

It is just something to check. This may not be chronic. I have one now that will be getting welded to match the SE CNC head opening. About 1/8" off on one side.

Mine matched up very nicely but, not cnc heads, just stock.
Like you say just another check as you go.
Maybe the plastic one is fine, but the SE is much nicer.
JMHO

[Hillside Motorcycle]

Am considering a bolt on 124 kit for my M8. Looking at S&S and T-man. Was wondering what some of you thought about the difference in the Screamin Eagle 64mm vs the HPI 62mm. I think it's about $200 more give or take for the HPI. Just wondering what some of you with more experience than me thought about the two different throttle bodies. Also with the different 124 kits, interested in your thoughts on the benefits of the thicker oil rings offered on some kits vs others. I don't mind spending a little more if there is a noticeable difference but I don't want to spend more just for the sake of saying I spent more.

With the almost unavailability of the HD 64's currently which we normally use to help keep costs down, we have now been sending the cores to HPI's Indianapolis location for their 62mm units.
We've seen great results with both.