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Old 09-01-2016, 08:52 AM   #15
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Is K&N original equipment in a 81 Isuzu TD?

Getting the rusted nut off and getting it out of the bell housing around it was strangely difficult given the amount of space in the whole vehicle.

I have used K&N filter in my Honda element for 160k miles. In the southwest, a paper filter can and will be dirty in a day on a dusty offroad or even in the city when there are dust storms. I would be changing paper filters monthly.

Does the engine oil get dirtier faster from increased dirt? yeah, probably.

Does it matter to engine life? someone more qualified can answer this
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Old 09-01-2016, 09:00 AM   #16
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I can't answer your question, I'm only offering s simple white glove test.

Remove air filter.

Using a spotless piece of white cloth wipe the inside of the tube downstream of the filter.

White cloth dirty or positively as clean as it went in?
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Old 09-01-2016, 09:21 AM   #17
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This is one of those things that I just don't get. A guy spends $60K on a pickup that is as efficient as the engineers can make it. It has all the latest electronic equipment to make it run optimally given a variety of circumstances. Then the new owner starts adding fancy air filters and the diesel owners add chips that often times voids the warranty. Why? To save a few bucks over many years on air filters? The chips are used because owners believe that the engineers willingly cheat owners by not providing the power they know they can get from the new engine. Really?

If it works, don't fix it. If it didn't work I think, to remain competitive, the manufacturers would change it. J Morgan provided an interesting article worth reading.
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Old 09-01-2016, 04:22 PM   #18
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I have used one on both our 'Burb's....I also routed a 'cold air intake', which helps more than the K&N.

Over oiling is the most common mistake,(looks like the one above is more than a little dry.

Properly cleaned & serviced...


Never had a problem with fouling the MAFS or the throttle body.


TETO...Just an old 'knuckle buster' here.

Bob
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Old 09-04-2016, 09:47 PM   #19
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Quote:
Originally Posted by kyote View Post
Is K&N original equipment in a 81 Isuzu TD?

Getting the rusted nut off and getting it out of the bell housing around it was strangely difficult given the amount of space in the whole vehicle.

I have used K&N filter in my Honda element for 160k miles. In the southwest, a paper filter can and will be dirty in a day on a dusty offroad or even in the city when there are dust storms. I would be changing paper filters monthly.

Does the engine oil get dirtier faster from increased dirt? yeah, probably.

Does it matter to engine life? someone more qualified can answer this
I'm pretty sure it was standard equipment for the Isuzu TD as mine had one and so did a friends; and yes that won't be the last thing that will be strangely difficult to remove or install given the size of the vehicle; try front of rear airbags.

As far as engine oil getting dirtier from increased dirt, unless you forget to replace your dipstick it shouldn't; where it gets bad is the turbo and what dirt and sand do to the turbo compressor blades as they rotate at 100,000 rpm +. I have seen the result from a K&N filter that had hardly any filter element in it, and it's not pretty. Once the sand and dirt get past the turbo it ends up in the cylinders, and that's not a good thing for engine life. Keep the K&N clean and oiled with maybe as suggested, a sock over it, and you should be good.

I'm working on the manual thing for you.

Cheers
Tony
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Old 09-04-2016, 10:25 PM   #20
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install one if these https://www.amazon.com/WIX-Filters-2...SIN=B0014BI1KA
It will tell you at a glance when you need to service your filter.

My filter has a hanger mount supporting the tube 6" or 8" before the filter. Normally you have to loosen the support and maneuver the tube around to remove the filter. There is a short flex hose at the other end of the tube going into the turbo. It is probably tired after 35 years. I bought a foot of 3" silicon hose and replaced that hose. I then cut the steel tube about 3" on the filter side of the support clamp. 3" of the silicon hose and two hose clamps makes it real easy to service the filter without disturbing the rest of the steel tube.
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Old 09-05-2016, 05:44 AM   #21
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Indicator is Commonly used on commercial engines and does indicate air flow restriction from dirty filter. Doesn't do anything to filter incoming air.
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Old 09-05-2016, 12:17 PM   #22
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You are correct it isn't a filter. What is does is measure the restriction in air flow the filter causes as the filter gets dirty. Rather then guessing how dirty the filter is or just changing the filter based on mileage or how it looks the indicator tells you the condition of your filter. With the cost of some of the filters today it can save a lot of $. Usually the truckers don't add stuff like this without a good reason.
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Old 09-05-2016, 01:18 PM   #23
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Both of my Dodge Cummins 5.9L's came with the filter minders.
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Old 09-05-2016, 02:24 PM   #24
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The filter minders fail if hit with engine cleaner. Test it every so often.
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