I have the stock cams reground to my spec, but they are designed to work in conjunction with the revised porting. I have not tried them with the stock porting, but the stock porting is terrible, forcing the fuel mixture all toward the front of the combustion chamber. With these changes and jetting our carburated 2010 TC starts easily hot or cold. We let racers test ride this combo this spring at Southwick and everyone felt the bike was as powerful as any 250 out there. The bike never got a rest all day as everyone wanted to swing a leg over it.
Degg that does sound good what would a job like that cost? On the 2012 TC 250.... that may make me get another 4-stroke!
I'll have to look up the price I got charged for the cams to get reground. I think I will get some cores so I can offer an exchange instead of having to wait two weeks, like I had to. I did it over the winter so it wasn't so bad. By the way still use the stock exhaust. The porting is 250.00
No we went with the Leo slip on and that with Hall's jetting and a few other carb mods made a huge difference with the bike. Starting hot or cold is much improved as is the overall power. I think it was the biggest gain I've picked up with so little an investment on a dirt bike. My problem with the 4-strokes is I can't/haven't ever messed with anything inside the engines.
When you consider the average price of an aftermarket exhaust, and if you ever saw the burn pattern in the combustion from the poor stock porting, the price makes more sense to me. On a 4 stroke the cams are the heart of the engine, not bigger cams just proper duration for the intended use.
quoted from Husqvarna NA statement about the 2012 TC250, "Here's a couple of highlights (but I can't spill the bag yet...) New piston is lighter and freer-revving, based on F1 technology. New cylinder head design originating from BMW’s F1 program."
Coffee, I believe officially at the present time there is no BMW F1 program last affiliation was with the Peter Sauber F1 team. However the "M" division is still in full swing in the sports and sportsprototype car racing scene. http://www.bmw-motorsport.com/ms_en I can never forget (and always mention) the F1 turbo era BMW powered 1500cc motors of the 80s, pushing 1200hp in qualifying trim, BMW still has the record for the most powerful F1 engines ever. BMW knows a thing or 2 about building engines. In addition by all the rumors in the racing world they don't like that KTM (or other brands) are dominating off-road/MX/enduro racing, continuing good news for our brand of choice. (looks like 2 enduro world championships are forthcoming as we speak, giant steps are being taken for sure).
BMW car racing sounds like a perfect topic for a thread in the Diner I am looking forward to that. Earlier this year I joined a forum dedicated to F1 racing.
They definitely have the technology, now they need to apply it with the husky. Stop trying to reinvent the wheel, just make a better wheel!!! The 250 4 strokes in MX need to Rip, they already have the handling down so give it some motor!!! and apply the bodywork from the 449 and they will have a truly amazing bike.
Crazy thing is, those were four cylinders! The last BMW F-1 egines were known to be some of the most powerful. Having that technology should definately help Husqvarna. F-1 is going back to turbos next year. GP
i ordered one on September en got in in October, but realy like the bike. Had an cr144 from 2007 before. Changed the stock ecu to GET from Athena and taken out the Db killer in the stock exhaust The performance is good and more than i need :-)
I just wish they would do a head up test between a STOCK TC 250 against a Walt Smith CR 165 My money is on the 165 Plus with all the saving you get ridding a 2 stroke you might just race more offen
