Are there performance mods? - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 24 Old 11-26-2018, 06:33 PM Thread Starter
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Question Are there performance mods?

What in the H_ll is the 22 cent mod? Will my bike last till morning?
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post #2 of 24 Old 11-26-2018, 07:00 PM
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Quote:
Originally Posted by jrdjr View Post
What in the H_ll is the 22 cent mod? Will my bike last till morning?
Two 11 cent #4 washers installed under the button head of the mid-range carburetor jet Needle.
This helps reduce the EPA induced lean/clean running in the most used portion of throttle opening, 1/4 - 3/4.

Works best at sea-level to 3000 ft. 3000 to 5000ft one should only use 11 cents worth. 5000 ft & up not needed, IMO.

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Modify at "YOUR OWN RISK"!

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post #3 of 24 Old 11-26-2018, 07:07 PM
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Quote:
Originally Posted by pdwestman View Post
Two 11 cent #4 washers installed under the button head of the mid-range carburetor jet Needle.
This helps reduce the EPA induced lean/clean running in the most used portion of throttle opening, 1/4 - 3/4.

Works best at sea-level to 3000 ft. 3000 to 5000ft one should only use 11 cents worth. 5000 ft & up not needed, IMO.
I think inflation has upped that to at least a $.60 cent mod.

2016 KLR 650
2017 BMW S1000RR (traded in for
2018 Ducati V4S
1983 GL1100 Goldwing
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post #4 of 24 Old 11-26-2018, 07:55 PM Thread Starter
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Are performance mods to a KLR over wishful. If not , please tell me more.
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post #5 of 24 Old 11-26-2018, 08:04 PM
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You'll have to define your terms. What do you mean by performance?

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I lit a cigarette and dragged a smoking stand beside the chair. The minutes went by on tiptoe, with their fingers to their lips. -Philip Marlowe

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


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post #6 of 24 Old 11-26-2018, 08:28 PM Thread Starter
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Horsepower or torque increases would be not discouraged.
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post #7 of 24 Old 11-26-2018, 09:56 PM
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Horsepower and torque cannot be improved in any meaningful sense.

The bike starts with 36 horsepower. For $1000 you can get 40. That would be a big bore kit, ported head, and a freer flowing exhaust.

Modest improvements in driveability can be had with a KLX needle, removing the snorkel from the airbox, adding four 1" holes to the airbox, and a modified stock exhaust. Figure $50 for that. After that, you quickly run into rapidly diminishing returns.
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I lit a cigarette and dragged a smoking stand beside the chair. The minutes went by on tiptoe, with their fingers to their lips. -Philip Marlowe

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


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post #8 of 24 Old 11-26-2018, 10:01 PM Thread Starter
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I did not expect much, maybe a carburetor or cam. I am satisfied with stock. Thank you.
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post #9 of 24 Old 11-26-2018, 10:11 PM
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Oh come on now Tom, some owners just need to go full bore.
This is step one, read on, https://www.klrchris.com/

Dive into the deep end, https://www.klrchris.com/klr650-small-port-head/

A pair of camshafts won't help (much) without proper porting.

Camshafts won't help as well as they could without proper indexing/degreeing, https://www.klrchris.com/klr650-adjustable-cam-gear/

Last edited by pdwestman; 11-26-2018 at 10:16 PM.
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post #10 of 24 Old 11-26-2018, 10:35 PM
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The cams are good for moving the powerband around. Fun to play with. They can provide a bit more power and torque. Remember, though, about the diminishing returns stuff.

I'm not sure if Chris is really doing the small-port heads, but it is very interesting work.

Tom [email protected]

I lit a cigarette and dragged a smoking stand beside the chair. The minutes went by on tiptoe, with their fingers to their lips. -Philip Marlowe

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


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