Shaun's (AR's) CRM250AR/CR250 Conversion
Posted: 18 Jun 2012, 09:39
This will take a while to finish (getting the photos to fit (some http addresses don't yet go to photos)) but Shaun has sent me a write up of his project and I'm posting it up bit by bit -
OK, so here’s a basic story of how I (Shaun) transformed this:
Into this:
This is something I have wanted to do for quite a while as all my mates were suggesting it would be so much easier riding something more modern and lighter. However, nothing out there really took my fancy. I love my two strokes, but I hate the thought of pre-mixing. I don’t want to go orange as I don’t want to be like everyone else, and no other two strokes out there are built anything like as robust as the CRM. However let’s be honest, the weight, age and suspension do let it down a little.
I had owned an AR for 3 years prior to starting this project, and loved it to bits. It was suffering from heavy use and wear and tear, and was due a major overhaul. I was originally planning to completely rebuild it, however eventually decided against this, mainly due to the weight and age.
Someone on this forum (and I can’t seem to find the post anywhere) posted a link to this: http://www.uzushio-racing.com/fream.htm (click WCRM250/AR at the top)
After seeing that, I realised that the conversion could be done, and that it looked amazing. I sat imagining an enduro version, but it was just a dream at the time.
Later on, someone else (and again, I can’t find the post anywhere) posted a link to an AR engine on ebay, and it was then I decided I’m going for it!! I made sure the engine was mine, and not long after, somebody ELSE posted a link to our German friend selling a load of Mugen bits for the AR. I decided this was an opportunity not to be missed and bought an ECU, cylinder head, and later jet kit.
The engine sat around for a while, and I started thinking about what on earth I was going to do with it. I didn’t tell too many people my plans as I wasn’t sure I could even pull it off. I also thought it would be a nice surprise for most of my trail riding mates as we had often talked and joked about ‘imagine a CRM engine in an aluminium frame’.
To cut it short, I bought an absolutely mint 2007 CR250 off ebay which had only done a few hours and bought it to the workshop.
Anyway, enough waffle, here’s the interesting bit….
Before:
OK, so here’s a basic story of how I (Shaun) transformed this:
Into this:
This is something I have wanted to do for quite a while as all my mates were suggesting it would be so much easier riding something more modern and lighter. However, nothing out there really took my fancy. I love my two strokes, but I hate the thought of pre-mixing. I don’t want to go orange as I don’t want to be like everyone else, and no other two strokes out there are built anything like as robust as the CRM. However let’s be honest, the weight, age and suspension do let it down a little.
I had owned an AR for 3 years prior to starting this project, and loved it to bits. It was suffering from heavy use and wear and tear, and was due a major overhaul. I was originally planning to completely rebuild it, however eventually decided against this, mainly due to the weight and age.
Someone on this forum (and I can’t seem to find the post anywhere) posted a link to this: http://www.uzushio-racing.com/fream.htm (click WCRM250/AR at the top)
After seeing that, I realised that the conversion could be done, and that it looked amazing. I sat imagining an enduro version, but it was just a dream at the time.
Later on, someone else (and again, I can’t find the post anywhere) posted a link to an AR engine on ebay, and it was then I decided I’m going for it!! I made sure the engine was mine, and not long after, somebody ELSE posted a link to our German friend selling a load of Mugen bits for the AR. I decided this was an opportunity not to be missed and bought an ECU, cylinder head, and later jet kit.
The engine sat around for a while, and I started thinking about what on earth I was going to do with it. I didn’t tell too many people my plans as I wasn’t sure I could even pull it off. I also thought it would be a nice surprise for most of my trail riding mates as we had often talked and joked about ‘imagine a CRM engine in an aluminium frame’.
To cut it short, I bought an absolutely mint 2007 CR250 off ebay which had only done a few hours and bought it to the workshop.
Anyway, enough waffle, here’s the interesting bit….
Before: