TonysScrews

iTrader: (13)

Hi,

The introductory price will be $54.99.

The stock JX-21 head button (part # JX02001) retails for $54.99 and typically sells for $46 on most online shops. With the EB JX-21 head button you will also get a shim kit. When you guys see the dyno graph the performance difference is amazing! You're basically getting a modified engine without touching the engine internals.

If anyone has a brand new JX-21 B01 or B01A and wants to trade in the "new, unused" stock head button, I will also offer a buy back program. I will not take used head buttons though, so sorry. Ed will not modify used head buttons.

These head buttons are brand new Mugen JX-21 (part # JX02001) head buttons purchased from Mugen USA and then sent to EB Mods for modification. The head buttons are milled down on a CNC machine. Ed modifies the squish band for optimal performance. You do not have to re-break in the engine when installing the new head button. as with any other engine change, I would recommend richening up both the LSN and HSN then re-tune for performance.

Best regards,

cjm1126

iTrader: (163)

do you know if the jx head button is the same as a speed head button?

TonysScrews

iTrader: (13)

I will check with Ed later on this afternoon.

cjm1126

iTrader: (163)

i have a good amount of them new probably 5-10

jpalessi

iTrader: (55)

YES! they are all the same button JX, Speed, and V Spec. you will get great performance gains with Tony's EB button on any of those engines.

scoobie1

iTrader: (3)

Has the stock VSpec been put on the dyno with this new button?

jpalessi

iTrader: (55)

LOL yeah! back in 04-05... "EB Mods V Spec"
The button is not new, just new to the JX.

scoobie1

iTrader: (3)

So its the same button as the EB VSpec button? If so, I have one of those

jpalessi

iTrader: (55)

ok...so you have 1... shimming is VERY important when using this button.. you only need 1 shim. .004/1mm

scoobie1

iTrader: (3)

Thanks

Shimming was going to be my next question...so its shimmed like the EB Spec, with one thin copper shim.

I still think that a dyno pull with the EB button/stock VSpec and Speed could be benificial...if it shows enough of a power gain, then those buttons will sell like hot cakes

jpalessi

iTrader: (55)

Make sure you measure the shim. By eye the .004 could be confused with a .002 or .006 shim, and use a new one. Also inspect the button for any warping or detonation pitting. If you see any thing like that. Chuck it in the garbage , and buy a new one from Tony. Good Luck
Ps. Ed has so much data, I'm sure the button results from those engines are at his finger tip.

scoobie1

iTrader: (3)

luckily for me, my button is NIP And I havent looked in a while, but think there is a shim in there. See, I got a deal on all the EB Spec parts a while back, but have never put the engine together...so Ive got a stock Spec and a Speed plus all the guts to build a EB Spec...I like OS

Thanks for the info on the shims...I didnt realize there were three different copper shims

TonysScrews

iTrader: (13)

Yes, Joe is correct the new EB Mod JX-21 head button uses just one .004" (0.1mm) copper shim and it is included with my head buttons.

jpalessi

iTrader: (55)

where did you get the EB spec parts? I dont know of anyone selling head buttons other then Tony.. I know A main, and RC Compound had some stuff awhile back..the reason i ask is cause if you use a stock button thinking it's a EB your engine will go boom. lol
Are you sure you got ALL the EB guts? Some mods EASILY go unnoticed.

cjm1126

iTrader: (163)

tony you have pm