Posts
437
Joined
8/22/2018
Location
San Diego, CA
US
Yz229
8/22/2018 2:15pm
8/22/2018 2:15pm
Edited Date/Time
6/25/2020 6:28pm
(EDIT: Now 315cc stroker build)
First post on Vital, although been following for years. I raced a lot when I was in my teens, and 33 now. Sort of ditched dirt and got very into Sport Bikes in my 20's and even today. Right now I have a 2016 BMW S1000RR for the street.
Been missing the dirt for a long time and I moved to San Diego so get to ride year round. I've always bought new bikes, but don't have the money anymore so looked around for a cheap 2006 or newer YZ250. I found one in Yuma for less then $2,000 and it was a bit of a mess. Front brakes barely did anything, didn't run right, chain is shot...just a mess.
My old 2006 250SX I bought new with ported 300 top end.
Saw a lot of people going Eric Gorr but heard a lot of mixed reviews. I used Tom Morgan Racing back in my 125 days and he promised his YZ295 is much better then Erics. So I tore apart the bike to the frame. The cylinder head looked good, but the piston had signs of detonation. Possibly the previous owner just swapped heads?
At this point, I wanted to re-grease everything (no pics of that) and start ordering parts! DEP works pipe, R304 shorty silencer, 2008 CRF450R front brakes, Vforce 3 reeds, new plastics, chain and sprockets, and tons of other stuff. Some of it is already on. I then found some 2018 YZ250 wheels brand spanking new, so nabbed those up and threw on!
The Shop
More to come. Will be cleaner posts when I get more organized. Was not expecting to be posting this to Vital, but why not!
Also wanted to see how DEP pipe might look, so just threw that on to see
Obviously haven't ridden yet but old one couldn't even slow me down even after bleeding. Probably needed a rebuild.
And yes, I love the blue wheels!
Anyone have any tips on cleaning the gas tank up? As you can see, pretty big color mismatch.
Pit Row
Now it will have Tom Morgan 295cc ported, milled head, DEP Pipe, R304 silencer, Vforce Reeds, 11oz FWW, stock gearing (14/50).
I'm sure it will be night and day difference. May do stock pipe comparison some day, but results may be moot since most aren't running Tom Morgan 295cc.
With a TMR 295 you may even gear down to a 14/49...
What made you go 295 vs the 265?
Kind of wanted to mimic that style if I could. I talked to Tom and he said the obvious, the 265 will rev a little free'er. The top end should be the same, but of course with added displacement will get better bottom to mid. He recommended the 285cc stroker, or even 315cc stroker but that was way too much money right now.
Also been riding/racing 1000cc Sport Bikes and now everything feels super slow so wanted more pep. I know, very apple to oranges. But I'm also a super nerd and just like trying things different
For reference here is the dep silencer on my bike.
Bunch more parts coming in next week as well. Also trying to decide who to do for suspension, Precision Concepts or Enzo...hmmm.
Post a reply to: Tom Morgan YZ315 Stroker (Red Bull Straight Rhythm)