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#3259084 - 01/24/14 09:40 PM Re: Should you ever change your air filter? [Re: nickolas84]
901Memphis Offline


Registered: 08/14/10
Posts: 5306
Loc: Northern Kentucky
Originally Posted By: nickolas84
What about weighting your air filter as a poor man's restriction gauge?
Assuming that the airfilters capacity is 300gr if one finds 100gr increase in weight, then he can keep the filter 50% longer, or install a new one and keep it 50% longer, and still be on the safe side.



Not a good idea due to the gasket being disturbed even one time can lead to leaks after its been compressed for a long time then uncompressed and re-compressed.

Also i believe you will allow contamination into the system too often. My air filter is very hard to get out, i wouldn't want to open it unless i was changing it and i don't even like doing that.
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#3259214 - 01/25/14 02:08 AM Re: Should you ever change your air filter? [Re: 901Memphis]
nickolas84 Offline


Registered: 09/04/12
Posts: 31
Loc: Greece
Originally Posted By: 901Memphis
Originally Posted By: nickolas84
What about weighting your air filter as a poor man's restriction gauge?
Assuming that the airfilters capacity is 300gr if one finds 100gr increase in weight, then he can keep the filter 50% longer, or install a new one and keep it 50% longer, and still be on the safe side.



Not a good idea due to the gasket being disturbed even one time can lead to leaks after its been compressed for a long time then uncompressed and re-compressed.

Also i believe you will allow contamination into the system too often. My air filter is very hard to get out, i wouldn't want to open it unless i was changing it and i don't even like doing that.


No no no! The filter would be removed only once for weighting and either establish it's replacement miles or replace it straight away and use the info to make an educated choice on the replacement of your next filter.
Then., based on the weight gain of every filter you replace you decide the replacement interval for the next filter!

It is far from perfect but it could help people who now change their air filter too early by a factor of 10X.

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#3259416 - 01/25/14 09:21 AM Re: Should you ever change your air filter? [Re: dnewton3]
afoulk Offline


Registered: 01/29/08
Posts: 1078
Loc: Palmyra, PA
Originally Posted By: dnewton3
If you're speaking of my situation, it's because of the incredibly difficult ingress/egress issues ...

If you've never worked on a GL1800 Goldwing, it's a total nightmare and I don't exaggerate when I say it's easily an hour job just to get in, and then about the same back out. I kid you not.


I remember servicing my dads Suzuki burgman 600, that was not much fun either:)
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#3259619 - 01/25/14 12:40 PM Re: Should you ever change your air filter? [Re: Jim Allen]
mr_diy Offline


Registered: 07/31/11
Posts: 222
Loc: Michigan
Originally Posted By: Jim Allen
Originally Posted By: mr_diy
[
I previously had neglected to change an original air filter (~80k) and after running a OA and getting a rather high silicon reading, I changed it out and the next OA had one third the silicon level. That original filter did not look bad, so maybe it was channeling.


Possibly. Other possibilities are a poor fit in the housing (maybe from being removed a few times). It might have been cleaned at some point and damaged. It's also possible the filter you replaced it with is more efficient.

Most likely iIMO is just the variables of comparing only two UOAs. Unless the differences were significant (say over 25%) it could be simple testing variables. Comparing two tests does not result in very accurate comparisons. To "see" small differences, you need trending. Lots of UOAs in each condition.


I don't believe I ever removed filter prior to the change, and it still looked fairly clean when replaced. The SI dropped from 21 to 7 and the replacement filter was a Purolator classic. Civic OA
My advice if you are not doing regular OA's, is just change based on recommended schedule. Then is the filter or gasket is failing you get it replaced sooner than later. A restriction gauge would only seem to make sense for very dusty areas where filters fill up faster than normal. Would not warn of a small bypass or failing media.
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#3264347 - 01/29/14 09:34 PM Re: Should you ever change your air filter? [Re: dnewton3]
rrounds Offline


Registered: 07/05/07
Posts: 433
Loc: SACRAMENTO, CA
Take a look at these, you should be able to find one that will work on your bike.
http://filterminder.com/products.asp

ROD
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