Posts
461
Joined
12/22/2010
Location
CA
US
Edited Date/Time
2/12/2019 6:47am
YZ325
http://www.eddie-sanders-racing.com/product_p/yz325.ceo.cylinder.kit-.h…
You can see photos of it in the trx add.
http://www.eddie-sanders-racing.com/category_s/171.htm
Sweet seeing some innovation in the 2 stroke world. Patent pending. It says "Incredible bottom end and top end power. Nothing close. Comes on the pipe without hesitation. Power band feels 3 times wider" This will be something to watch.
http://www.eddie-sanders-racing.com/product_p/yz325.ceo.cylinder.kit-.h…
You can see photos of it in the trx add.
http://www.eddie-sanders-racing.com/category_s/171.htm
Sweet seeing some innovation in the 2 stroke world. Patent pending. It says "Incredible bottom end and top end power. Nothing close. Comes on the pipe without hesitation. Power band feels 3 times wider" This will be something to watch.
It's all in the squish... ( post piston to dome clearance)
The Shop
Not saying it can't happen, but that's a pretty big claim.
Might be worthwhile to upgrade.
Yamaha YZ Eddie Sanders Racing (ESR) 325 Build (2007)
Purpose - Motocross and Off Road rider – Intermediate Level
-Eddie Sanders Racing (ESR 325 - S7 (Woods Porting), Race Gas Dome (use 50 Pump/50 Race Fuel) ($900)
-No - Fly Wheel Weight - None
-Race Tech Suspension ($600)
-Moto Tassinari Reed Valve ($250)
-Rekluse Clutch - Core EXP 2.0 ($900)
-ESR Expansion Chamber ($200)
-FMF Q Silencer ($100)
-Vortex Ignition ($250)
-Dunlop MX 3S 90/21 Front, MX 33 Rear - 120/19
-TU-BLISS -Traction Control System ($200 Total)
-Geared 14 – 48
-Jetting 165 Main, 42 Pilot (Works in 500” to 4,000’ Altitude)
$3,500 Used 2007 YZ 250, plus parts $3,450 = $6,950
I wonder what the head shape is - Flat, or curved to mirror the piston profile, or any number of other designs?
I signed up to his newsletter, as I'm interested in the PV Cylinder he's got coming for the CR500. I'm not sure of his design - perhaps (well, likely) it's the CV / Diaphragm type I so liked on my Maicos. Or, better still, just vacuum without a diaphragm. Simple, though, of course, far more complicated than just a plain port . The basic simplicity of my 500 is it's great appeal to me, but a PV like the Maicos (and many others that used non 'mechanically linked' set ups) , just scoots into the simple / basic side of the ledger for me.
With his kits, Do you know if a 250 pipe can be run or do you need the ESR pipe I see on your list of mods ? Can the standard 250 38mm carb be run or does it need to be tapered for a bigger bore size to a 39mm ?
I would think the mods above would help to get optimum performance out of his 325 kits..
The ESR pipe is about 40mm longer and maybe slightly larger diameter, it works better for a 250 or 325 than the FMF, maybe by 15-25% better, not a huge difference but noticeable.
Stay with a 38mm Carb, changing this will complicate things. Stock jetting on a YZ 250 was 170 main, 48/50 pilot, but the ESR 325 sucks harder (33% larger piston) and therefore you go down in Jet sizes. I tired a lot of sizes, but in the end 168 main and 42 pilot.
Don't have a clue what it does, lol...
Neither with the hollow side.
Any good 2 stroke tech around?
Pit Row
ESR Pipe for 250/325..
Post a reply to: New 2 stroke piston design. ESR CEO