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Yes the left outer case is a works magnesium case setup for an hydraulic clutch slave cylinder.
The rubber straps are indeed from Ducati as previous poster said. They are called "Clamp, Rubber" and come in various sizes. I purchased them from Ducati Omaha.
do you have any pictures of your hrc 250 engine ?
Also working on 2 factory 2002 CR125 last two engine in existed. One is being built just like what Fonseca rode, the other is getting some modern modifications. Gear sensor, TPI, powerjet, had a crank made by the guy who build the factory cranks for the KTM 125 that race in MXGP EMX125 class, so it balanced and also has a Titanium long rod. Going to run a work Mikuni Sandcast carb, a modern programmable custom igntion. Custom wiring harness to add in all the new features. But should be good.
Thank you for sharing and providing some great info and photos! Really looking forward to seeing your amazing builds complete.
I kinda think it’d be a great addition to my bike now 😎
First, let me say, no one MADE or ASKED me to delete my posts. It's my engine and I can post and share what I want (well I guess the Moderators have the last say and they played no role in my decision).
Second, I apologize to those that took the time to post about what I shared and now my post are gone...
Long story short on why I deleted the engine stuff: The sharing of the engine details was causing a potential "issue" for a friend. Until this "issue" is cleared up I felt it best to remove my post about the engine.
Pit Row
Don’t regret one second, what an incredible build!
Can you please reach out to vital and get Ping to do a ride and review when it’s done!
First here's a picture of the oil cooler mounted on Akira Narita 2015 HRC CRF450RW (Vitalmx/ML512)
And here is mine after a little clean up
Need to have my Febur radiators modified to mount the cooler. Just two tabs/brackets will need to be fabricated and welded to the radiator body.
I will get a couple of pictures up showing where/how the oil lines mount to the works magnesium stator cover soon.
One day I’ll put up some of my bikes. But great work.!!
I swear building a bike is like moving into a house: you’re never done.
For the rebuild I have replaced all the case bearing, seals, and of course gaskets. Along with various random OEM parts (not many to be had inside this engine!) The only major parts, of this engine, that are OEM are the cylinder, right center case, and the valve cover. All these components have been replaced with new parts.
- New OEM cylinder, the cylinder that came with the engine was in good shape but I found a great deal on a new one.
- New right side center case, same deal... found a new one for cheap.
- New valve cover. Just going to put the new one from my stock engine.
The only other major part getting replaced is the piston, rings, and wrist pin. No, these parts are not OEM parts... They are JE piston parts! That is what was in the engine. Apparently, JE Pistons was used by HRC in MXGP and AMA bikes during this time period. And the piston is a stock compression ratio one. Pretty interesting!
New JE Piston and DLC coated wrist pin
I had the cylinder and right center case vapor blasted by Premier Vapor Blasting of Georgia
They did a great job and I HIGHLY recommend them for you blasting needs.
Love the contrast of the works left sand cast coated case and the vapor blasted OEM one
I'll get a picture of the cylinder up soon as I get it on the engine.
More to come along with some new (at least to me) knowledge (and parts) about the HRC bikes and the throttle body...
But in the mean time I have also been working on figuring out what HRC used for the throttle body. It was most certainly not the stock OEM unit, let me explain ( Everything below is just conjecture on my part and I have no inside knowledge. So if someone out there does, please chime in!).
I first noticed that the 2015 - 2016 HRC bikes had the condenser/rectifier moved from the stock location (mounted on and below the throttle body)...
Stock location - 2014 Trey Canard Team Honda CRF450R
...to a custom mount attached to the frame/ECU bracket (HRC MXGP bikes) or to the engine case (USA Team Honda)
2015 HRC CRF450RW
2016 Team Honda CRF450R - Canard
Why the move? Because Team Honda/HRC are using a throttle body with a bottom mounted Fuel Injector nozzle (stock is top mounted). No longer allowing the condenser/rectifier to be bolted to the bottom of the throttle body. And in fact I believe they have been using this type of throttle body as recently as 2020!
Has this EVER been mentioned anywhere???
The use of an under-mounted fuel injector becomes obvious when you really zoom in and begin to take notice of some other details. Such as a the fuel line in a totally different location and going to the bottom of the throttle body.
2016 Team Honda - Fuel Line in red box
2015 HRC CRF450RW - Fuel Line in red box
2020 Team Honda - Justin Brayton (this generation bike layout makes it way less obvious. But look at the red boxed area... there is fuel line and what looks like the mount for the injector)
Will post more about this and what big clue my HRC works engine provides on the type of throttle body Honda/HRC has been using.
The use of this KTM throttle body was a common modification at the time (2015-2020) on other brands 250F's. In fact Twisted Development Racing used to offer this as bolt on package for 250F's
Twisted Development
Why do I think that's what HRC used on their 450's?
Because of this...
... a HRC throttle body manifold designed for the CRF450RW head and the 44mm Keihin throttle body.
Comparison between HRC and Honda OEM
As you can tell, the main difference between the two is the throttle body side alignment notch orientation and the HRC example having less of a curve.
And wouldn't you know it... the HRC manifold has a notch that aligns with a KTM 44mm throttle body
Next up, the modifications necessary to get this KTM throttle body working on my CRF450RW
Post a reply to: 2016 HRC Team Honda CRF450RW