I want the good, bad, and the ugly - 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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post #1 of 17 Old 03-18-2010, 08:07 PM Thread Starter
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I want the good, bad, and the ugly

alright ya'll i have a pcv valve in the shed. Is it worth putting on? what can i expect to see with this installed? and what is the worse case if it falls? any and all story's thanks guys.
Jesse
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post #2 of 17 Old 03-18-2010, 08:12 PM
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I could tell ya a long story, but...

For me this mod provided a noticeable increase in throttle response coming out of first gear and going into second. Under certain conditions there was a "bog" there that went away after the mod.
It's not something that would ever show on a dyno.
No downside, and easily and cheaply reversed if you don't like it.
Try it, it only takes a few minutes, and I'm betting you'll like it.

Tom

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post #3 of 17 Old 03-18-2010, 08:19 PM Thread Starter
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good deal, I am going to put it on tomorrow. I only got my new back tire on today so got to put the front D606 on tomorrow also. I love this bike!! this thing is nuts. ill get yall some pictures as soon as we have some good weather.
Jesse
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post #4 of 17 Old 03-18-2010, 08:45 PM
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Quote:
Originally Posted by DuckPicker03 View Post
good deal, I am going to put it on tomorrow. I only got my new back tire on today so got to put the front D606 on tomorrow also. I love this bike!! this thing is nuts. ill get yall some pictures as soon as we have some good weather.
Jesse

Jesse -

Just out of curiosity, which valve do you have? The Mercedes valve is the preferred one.

Tom

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post #5 of 17 Old 03-18-2010, 08:53 PM Thread Starter
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not to sure i was given a part number for a puralator valve and that was the one i got. Purolator #PV1050 someone said it was for a dodge intrepid but not to sure.
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post #6 of 17 Old 03-18-2010, 09:07 PM
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OK. That will work, but some have noted that the real PCV are gravity operated and sometimes cannot keep up with the pulses in the vent line. They can also be a bit noisy.

The Mercedes valve is a spring-loaded poppet valve that is actually designed to go into service as part of a turbocharger system. It's designed for a rapid operation and the spring positively shuts it when it should be shut. It's quieter, too.

The part number is around here somewhere; I'd find it for you, but I'm late in getting out onto the field for my softball game!

Tom

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post #7 of 17 Old 03-18-2010, 09:12 PM Thread Starter
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Yeah if you don't mind when ever you get a chance i would like that makes more since to have a spring that can keep up compared to the gravity. thanks for the help.
Jesse
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post #8 of 17 Old 03-18-2010, 10:37 PM
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The mercedes valve part number is 271-018-00-29. You will also need to 1" long pieces of 3/8" inside diameter hose. These go over the ends of the MB valve so that it fits snuggly in the breather hose.

Follow this thread: http://www.klrforum.com/showpost.php...54&postcount=1

Tom

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


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post #9 of 17 Old 03-19-2010, 01:40 AM
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for me ... i saw a HUGE reduction in oil 'burning'. get the MB valve. much quieter. also i posted on here somewhere a new part number. it had changed. not sure if the one posted above was the new number or the old one.

02 klr - heated vest and grips, corbin dished, EM doo, petcock mod, MB PCV mod, stainless oil filter, bash plate, mayher hand guards, low mount fender, power socket, tall windscreen, jardine exhaust, jetted, studebaker shifter, magnetic plug, airbox mod, k&N, kenda knobbies, DIY pelicans, HID light
96 zx11 - bone stock - saving for a collector plate
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post #10 of 17 Old 03-19-2010, 06:14 AM
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MB Reed Valve

Just ask your local MB dealer for the reed valve PCV for the 280 Kompressor engine. That's all I did. No part number required. Works great. Very quiet. Immediately smoother engine. Oil use halted. No rattle. Dunno bout the dynamometer, but the butt-o-meter loves it.

It's a reed valve, BTW, not a spring operated valve; that's why it can keep up with the RPMs. Costs $12 as opposed to $4 for an ordinary Purolator. The extra eight clams goes to pay for the fact that the parts guys wear snow white long sleeve shirts and silk ties, clean fingernails, groomed hair, and the cashier in the thickly carpeted foyer is jeweled, attractive, and tastefully painted, while all of them purposefully exhibit suitable deference. Even the door to the parts counter had gold leaf on the window.

But, hey, I got eight bucks worth of mockery and a good reed valve out of it, so I'm happy.


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