More Torque? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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Old 05-16-2016, 01:52 PM Thread Starter
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More Torque?

Just recently spent the weekend on a great ride around the Talimena area. A friend and I rode the K-Trail, which is a fairly long and sometimes challenging trail. My friend was on a BMW R 100GS. His bike was able to practically idle in first gear up some of the staircase like obstacles at speeds just fast enough to keep his feet on the pegs. My KLR just insists on being revved to around 3k to go up some of these things. Then I end up running him down and kinda bombing the hill so to speak going up it. Trying to slow down it bogs, then you end up dabbing your feet everywhere to stay up on the bike.

I'd like to have better torque down low for crawling in first and staying balanced on the pegs.
Is this something that the 688 kit would help with?
14 tooth front sprocket?
Both?

2003 KLR 650
Cogent suspension front and rear, jet kit, Lexx pipe, Uni filter, D606 tires
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Old 05-16-2016, 02:03 PM
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Both can't hurt but the 14 tooth CS will make the most difference for what you are talking about.....or just ride faster! ;-)


Dave
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Old 05-16-2016, 03:59 PM
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I must admit, when I bought my klr it was the biggest thumper I ever owned. Had a BSA, xr, xt500, xl350. The KLR had the least amount of torque, little disappointing... rev a little higher, slip the clutch a little more.
KLR is by far better on the highway than other thumpers, so I am thinking it's a trade off....

However, I am wondering if anyone here has any knowledge of some of the HP camshafts out there?

"Things are made out of Stuff"
Bill Nye~

"Singularity is a scientific term for - We Just Don't Know"
Neil DeGrasse Tyson~

(2011 KLR)
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Old 05-16-2016, 04:11 PM
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Nothing I have seen specifically addresses increasing low-end torque.

These folks Web Cam Inc. - Performance and Racing Camshafts / Kawasaki KLR 650 (96-07) DOHC 4v have some grinds that all advertise increased mid to upper-end performance.

As of right now they have a couple of grinds on clearance at about half-price. Might not be a bad way to find out what they will do for you.

Hot Cams Hot Cams, Inc. advertises a similar product. Theirs seems to have less lift and duration.

I really know diddly squat about cams. Hell, I'm befuddled by the MC Mod as to why it does what it is claimed to do. I have always found it interesting that the aftermarket cams are always described as increasing mid to upper performance when what you'd want for the KLR is more bottom end. Kinda makes me wonder if, reading between the lines, they can't improve on the KLR's low-end and torque curve.

As much as I love to fiddle with the damn thing, just for the sake of fiddling, I've never been really tempted to go with cams.

Tom
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Last edited by Tom Schmitz; 05-16-2016 at 04:33 PM.
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Old 05-16-2016, 04:14 PM
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Yep, guys have done it all; cams, ported heads, pumper carbs, big bore kits....you name it. Unfortunately the KLR's engine isn't that suited for high HP numbers compared with more modern offerings.

Stock = 34hp

add KLX kit, airbox mods and a silencer...1-3 hp

big bore kit; you're looking at +3 hp or so.

.....everthing I mentioned above and you MIGHT get to 45 but probably low 40's.

The KLR is revered for it's reliability and longevity....not it's horsepower and while the big bore, jetting, airbox/silencer stuff wouldn't hurt these things, higher compression and hot cams would. ...and you're still never going to compete with other bikes like a KTM690.

If you wanted big power, the real answer is that this isn't your best choice.....by a long shot.


Dave
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Old 05-16-2016, 04:26 PM
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...just reading your signature; I see you've done the jetting (klx kit done right I hope), silencer and unifilter. Have you pulled your snorkle? any other airbox mods? you should really pull your snorkle and consider the L mod or 4 1" holes.

Mine are almost the same (even the Cogent stuff) so;

- KLX kit
- Unifilter
- snorkle-ectomy
- 4 - 1" holes
- LeoVince X3 on one and FMF Q4 on the other.
- 14 tooth C/S sprockets.

....they aren't going to keep up with my old ZX6R....or even my KTM300 but I find the power to be adequate.

Cheers,
Dave
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Old 05-16-2016, 04:27 PM
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Big torque is almost always associated with long stroke. The KLR does have a shorter stroke than bore, torque may never be a option.

I do personally love the flat power curve, easy to manage off road.
Like I said. rev a little higher, slip clutch a little more..

"Things are made out of Stuff"
Bill Nye~

"Singularity is a scientific term for - We Just Don't Know"
Neil DeGrasse Tyson~

(2011 KLR)
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Old 05-16-2016, 04:28 PM
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I know a guy who has a KLR650 and recently added the Mighty 690 to his stable. He has over 1000 miles on the 690 and could give an interesting comparison of the two.

/POKE/

Tom

Tom [email protected]

“Neither of the two people in the room paid any attention to the way I came in, although only one of them was dead.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


Sting like a butterfly.
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Old 05-16-2016, 07:59 PM
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JasonK94Z,
Dave already questioned your jetting, but I will go a little further.

Did you/ have you opened up your air box as he suggested or not?
If not you might be a touch rich down low.

How much do you weigh?
I'm only 150-155 after a shower, probably about 175 in full gear with 10 lb. tool bag. But my light-flywheeled 1987 -A1 will pull down to 1500-1800 rpm if I ask it to.
(It will rattle a little. Old balancer sprockets!)

Your heavier flywheeled 2003 ought to pull down to at least 1800- 2000 rpm, with proper jetting. If not, your bike might be a good candidate for the 'Free-power mod' or 'MC Mod' or 'Exhaust cam advancement mod', which ever you care to call it.
This mod usually "enhances and smoothes" the power curve from 1500-6500 rpm. Some Gen1 bikes love the mod! Some lose power at altitude (5000+ ft.).

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 84,000+ miles & counting
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Old 05-17-2016, 09:11 AM Thread Starter
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I have already pulled the snorkle.
I use a UNI filter.
Not too enthusiastic about cutting up the top of the airbox. Deep water crossings sometimes, and anything to prevent water entry is my friend in my opinion.

The bike has a DJ jet kit. Until recently, I used the DJ140 main jet, but last week while cleaning the carb, I switched down to the DJ136 main jet. DJ needle on the #3 slot per their instructions, and drilled slide.
42 pilot jet due to a hesitation issue and hard starting. This solved it.

Lexx exhaust

MC power mod done as well

Edit: I weigh 230 lbs.

2003 KLR 650
Cogent suspension front and rear, jet kit, Lexx pipe, Uni filter, D606 tires
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