Upgrade from 610 to 630

I've got an 07 610, that has been pretty well decked out for desert racing:
- 20 Litre IMS tank
- 5 Litre rear tank
- Scotts Steering Damper
- Revalved suspension front & rear
+ many other misc other 'tweaks'

Generally speaking i'm really happy with it.

I'm toying with the idea of upgrading to the 630, except for a couple of issues:
- fuel
- un-adjustable front suspension
etc.

It seems that the main reason i would want to upgrade at the moment is for more CC.

Is this correct, or is there more to the 630 than that?


Further to this, can the CC be increased to acheive the same outcome by installing a bigger barrell / piston?

Any thoughts?

David

FBF used to have a high compression piston kit for the 610's and I "think" it also was slightly larger bore for increased cc.

I was looking at one for my 06 when I was toying with the same idea.

The 630 is now 600 cc's c/w 570cc's on your 610. The new bikes do have more grunt bit are also a bit heavier (twin exhausts etc). By the sounds of it your bike is probably a darn good machine. I recollect that there is a big bore kit as well.

the 630 also has dual over head cams and a very smooth hydro clutch.
they beefed up the subframe , the headlight is very bright ,seat foam is 2" thicker,EFI
while the bike gained some weight you lose most of it by replacing the very heavy stock exhaust (dual cats)
the stock front suspension works better than i thought it would , and adding compression adjusters is supposed to be around $250
most of the accessories from your 610 will fit .
husky used to make a special full race smr 630 up to about 04, but dont know if parts are still available.

oh and safari has a larger tank listed as available soon on its webb site

Along with the increased displacement comes higher compression,DOHC and larger throttle body. I expect the 630 has quite a bit more power than the 610 but have never ridden one. It is a bit heavier due to the dual exhaust and steal subframe.

While i'm interested in the Higher Displacement, the increased Compression Ratio concerns me a little.
Even the 690 Rally has a ratio of 11.5:1 compared with the 630's 12.4:1.

Compression ratio on its own doesn't mean a whole lot. You're probably comparing apples to lemons. Cylinder pressures and volumetric efficiency are influenced by the entire intake and exhaust tract. Other factors such as chamber design also affect the maximum permissible static compression ratio.

who make the big bore kit for the 07?

Anyone owned both bikes?

As soon as I heard the 610 was being changed to a 630, I read the specs and quickly scooped up the first 610 I could find. I just can't see how the 630 can be a better offroad bike than the 610. The 610 is a perfect fit for the kind of riding I like. I just wish Husky had reduced the weight, not increased it.

I think with a single pipe the 630 would be closer to the 610 in weight with more grunt and better road manners. Both great bikes and true DS imho.

I'm not sure how close with the SM610 coming in at 140 kg and the SM630 at 158 Kg, that's 308 lbs verses 348 lbs. It will take a lot more than a single pipe to drop 40 lbs. I hear the SM630 has a little more pep, but like Navaho6 - I'd like it to be a lighter bike.

SM610 Specs


SM630 Specs

I just took off my stock left pipe and weighed it. 7.2lbs or 3.3kg

If that's the case then it still needs to lose another 30+ pounds to get down to the weight of the SM610. How much more horsepower would it need to make up that difference?

FWIW I don't think the real difference is that much. Has anyone auctley weighed a 610 and 630 side by side?

I'm saying it wouldn't be the first time a bike manufacturer wasn't totally honest about the weight of there bike's

I agree, but they usually say their bikes are lighter - not heavier.

Which might be the case with the older 610 “lighter” numbers verses the new 630’s weight measured by “real world” devices

Maybe ?

I don’t know but it looks like those bikes are sharing so many pieces that I find it hard to believe they won’t be very close in weight once you switch to a single exhaust

High-Side,

Where did you get your weight figures?

As listed by Husqvarna Oz the weight difference between the TE610 and the TE630 is 9kg.

To answer your question the extra power required is something like 1.5kW or 2hp based on that 9kg, a 90kg load and a baseline power to weight of ~150kW/tonne. The 610 comes in at less than 150kW/tonne, yet (in standard form) the standard 630 exceeds that number and is therefore excluded from the Oz LAMS list.

Go up three of my posts and click on the SM610 Specs and the SM630 Specs to see the information.

Ah that's right... Numbers that were not published by the manufacturer or distributor themselves. My question was facetious.

Weights as published on the Oz Husqvarna site are TE610 at 140kg, TE630 at 149kg. I notice that the latter has recently been adjusted from 150kg.

Please ignore the rest of my previous post because that involves approval by a government body that takes this stuff very seriously using actual power and weight numbers (we may not see them published) from the manufacturer.