Frame changes - What other engine will fit a 2013 250/310 frame???????

Does anybody know whether a 450 engine will go straight into a 310 frame?
whether a WR 250 will go straight into a 310 frame?
Does anybody have any idea of what combinations work with minimal work involved to change the frame?


After having a complete terminal failure of a 2013 310r engine crank conrod piston bore head. I had someone I know gain access to my shed while I was away and take the bike for a spin 12 months ago
I had a quote for $3400Aud on parts only...... Doing a rebuild cheaply might be $2500-3000 Au. It seems like there are few aftermarket parts for the 2013 xlite which means the cost is a premium for a rebuild. Makes me WONDER WHETHER THROWING A KTM 2T at the bike could work??????????
I found a mob who were going to send a full 310 motor from italy for 1400 euro but they fail to respond to figure out the necessary export documentation after six months.
For one year I have been looking at salvage auction listings to try and find a 250/310 that has been totally smashed but the engine good. Nothing has come up apart from 450's, as they seem to get ridden on the road and fully insured.

I also have a complete 250r 2008 which was given to me which is completely dead, and want to get that running as well so considering options for it as well. Missing head piston etc. would a 125 2T be a straight fit?

Mike.

Hi Mike-

I remember your story- sorry to hear you're still dealing with this. I'll be keeping an eye on your progress, because I'm interested to know if a husky 2-stroke will fit in my '14 xlite frame.

good luck.

http://www.swmmotorcycles.com.au

These guys bought the Husky factory. The 300 might be a fit. I've heard it is the 2008, non X-lite motor.
They are in Australia so no import issues.

I know the 2010 model 250/310 the exhaust manifold inlet and outlet is a slightly different height. Consequently there is a question on manifold and airbox fitment. I had found a exchange 250 2010 for $2000Aud which I agreed to, but was advised against because the bike is overseas, (the bike is in Vanuatu where I am) and he wasn't willing to swap other parts over as would probably be necessary and complicated so we decided to look at rebuild. In the meantime i decided to put it on the backburner and I turned 40 and went all out sold a car and bought a new TE300 I like the 310 I want to have it running again and occasionally we hire out bikes here for guys doing the enduro thing so If I can keep it running it will end up paying its own way. Trenchcoat,,,,, did your engine die???

I have emailed swm Aus, and see what they say?

The SWM Rs300 enduro model uses a Husqvarna Red Head engine — developed by one of BMW’s Formula 1 engineers before the company was sold to KTM.
Former Cagiva, Husqvarna and Aprilia engineer Ampelio Macchi is the man behind the return of the old SWM (Speedy Works Motors) brand. The line-up will have six new models, starting with RS300 enduro, ----------- Expect a 125cc two-stroke in the future.
SWM will be produced in Lombardia, Italy, but gets it funding from the Chinese Shineray group. Some of the engine will be sourced the Husqvarna, not the KTM-owned Husqvarna, but the previous Husqvarna in Italy. You don’t need to look closely to see that the dirt bikes are very similar to the Huskys of three years ago.

I actually thought the engines were chinese, because of who they were purchased/financed by?????????? When I first read an article some time back it seemed to indicate this... also I thought Gas Gas bought the rights to the pre-KTM Cagiva based Husqvarna 4 strokes The engine on the 300 however looks identical to the standard red head and the weight and size would seem to indicate this,,, the gearbox configuration looks slightly different????? Mike.

weird- I was gonna suggest you get a new/used 2-stroke.

my '14 310r is going extremely strong at 3400 miles (~5500km) of which 95% of the time is single track 1st/2nd gear. I just changed the oil today (9th or 10th since I bought it) and it had about 780ml in it (I fill to 940ml and still has the stock stator oil leak) so I'm very, very happy. I have 3 stock skid plates, 2 of which are broken (retail is $11 which is nothing as far as I'm concerned. I have an aluminum EE on standby, but it won't fit with the stock oil vapor recovery return line... and I've never gotten around to modifying that mess yet); I'm not baby-ing the bike at all.

It's just that I'm an old 2 stroke guy; and this motor feels super high strung. I can't see it going anywhere near 10K miles. The tranny feels fragile. I am just thinking about options down the road- this bike would be sweet as a 250/300 street legal 2-stroke.

btw, I have an xr400 that still runs pretty good with 25K miles- no rebuild. That would be your island rental bike.

I believe the SWM motors are the big-block motors('08-'10), not the xlite. thought they did have red valve covers, the are not considered "red heads". I'm sure someone will correct me if I'm wrong about this though.

I thought the x-lites rights were sold to gas gas. Those are definitely the older big block Husky's, which is a damn good engine. Remember older husky riders 20,000 + miles on his 2010 TE 450.

I received this answer from SWM australia "SWM RS 300 R shares it’s DNA with model year 2010 Husqvarna TE 310" But there was no other information given, other than contact a dealer for parts. So it is a red cam cover where before they were black. Perhaps the xlite was sold to GAS GAS and the old 2010 engine is being used by SWM. According to GAS GAS website Australia they are producing GAS GAS again mid 2016 at the factory... So might be a bit of a wait on that engine...... Dealers/importers don't seem to sell complete engines only parts, realistically I think dealing direct with italy might be the only option if wanting a new complete engine. Still I like the idea of throwing a 2t at it. Somebody mentioned last year that the design of the front of the frame where the bars come up will be different between 2t and 4t,, without having two side by side I cannot comment. DOES ANYONE KNOW THE FRAME DIFFERENCES BETWEEN TE450 AND 310? It is much easier for me to pick up a 450 wrecked bike....

I believe the pre-xlite bikes are all the same basically (engine counter-balancers may be the exception): frames, motors (basically), wiring. The SMRs differed a bit from the TEs IIRC.

I think the 2-strokes were different critters (same plastic?)

hopefully an expert will chime in.

edit: wait, i lost track of what we were talking about. I was referring to equal years (ie, '09 te450 v. '09 te310). when you're talking "frame differences" what exactly are you asking?

2010 TE 310

The 298cc motor uses an 83 x 55mm bore and stroke

2012

82x57

the 2010 310 engine looks twice the size of the 2012 310 x lite.

Can you throw the 450 engine in the 310 frame,,,, I guess how many modifications need to be done. muffler cdi etc etc???

At the end of the day if i pick up a wrecked bike I will probably carry over the frame anyhow....
Still it would be nice if someone would chime in who knew what the differences were???????????

On the side of the 2t it would appear that the 2t frame goes higher in the middle to allow space for the centralised exit of the exhaust.
I assume it wouldn't be that straight forward.


SWM’s three enduro bikes (the RS300R, RS500R and RS650R) are based heavily off pre-existing Italian-made Husqvarna models, as follows:

• RS300R based on 2010 TE310 with CDI GET instead of Mikuni, new mapping, a double-exhaust system instead of single, layshaft, cush drive clutch and KYB fork and shock.
• RS500R based on 2010 TE510 with CDI GET instead of Mikuni, new mapping, a double-exhaust system instead of single, layshaft and KYB fork and shock.
• RS650R based on 2012 TE630 with CDI GET instead of Mikuni and new mapping.

The only engine that might fit is a 125. That older 250/310 and 450 engines won't fit. Too big.

Only the original style engine family will bolt in. By the time you make a different engine fit you could have bought a new bike, the mods are extensive and require great machine and welding skills.

I always thought a Husky 250 2T would be awesome in the new smaller 125 and X-Lite frame. I was looking for a complete roller to buy. When Fred Hoess was still a Husky rep, he had a demo TC250 with a blown motor, but KTM/Husky USA wanted too much for it as is. It would have been a cool project, but way too much work in the end.....

On the story of GAS GAS XLite Motor and developments. (from Aus distributor)
"Yes, Gas Gas has the old Husky motor, but to date we haven’t seen one. Gas Gas has only recently emerged from bankruptcy with a new owner now pulling the strings. I believe we will have to wait till next year till see some 4 stroke Gas Gas bikes, and I am told the 310 has been made into a 320.
The issue may be that engine mounts may be different, hard to know till we see them."
A couple of comments and conclusions
* If the 2010 is bigger and the xlite is a lighter smaller frame then no go unless you carry over frame and all that goes with it !! (I do have a 2007 250tc frame here though?!?!?!? .........)
* Otherwise options seem to be rebuild or replace engine.
As for the 2T I think you would have to have one sitting there to fit it in and see......You have to have one come up at the right price too with all the necessary donor bits,,,,, not something that will likely happen as there aren't many around.
There are a lot of complications, airbox fitment new muffler tabs welded to the frame etc, but it's a metal frame, you can weld it!!!
Part of the desire to put something else in is born from the fact that 4 strokes are expensive to rebuild but particularly this one, and i don't trust the reliability of the engine........... Apart from the 2 burned starters in the 20 hours I used the bike,,,, apparently starting it in gear ! one day when I was riding I had an oil leak come out from the circulation pipe, it had gotten loose. I hadn't lost much oil but gone unnoticed for the another hour, the engine would have had a terminal death on that day..
I had the TE300 engine out and never even thought at the time to sit it in the frame to check.

https://home.mobile.de/MOTOSPORTHANDELSAG#des_219810047

Have you seen this? At least that indicates some pricing for the SWM. Sourced from Germany.

As a follow up to this after 12 months from this post we sourced cheaper parts new over time and have rebuilt the engine done the head work and the cylinder recoat etc price including parts shipping labour was a bit over $2700 aud. The valves I got out of Italy from a supplier there, was less than half the price than Australia. In the meantime I now have a Husq te300..... have been very happy with it..