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Author Topic: air filter adapter help  (Read 2183 times)
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matthewfortson
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« on: November 30, 2013, 11:22:40 PM »

My standard air filter has a connection to the rectangular cover for the valve springs, I just ordered an air filter from bmi and the adaptor that supposed to go with it doesnt look like it has a connection for the cover, any ideas?
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royalblu68f100
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« Reply #1 on: December 01, 2013, 12:11:37 AM »

We normally just leave it hanging. You could attach a piece of tubing to it and run it down the frame if you like ( this would be to prevent a mess if any oil came out).
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You never win a race by focusing on one aspect of the race!  Motor isn't everything, but you better have a good one!  Chassis too!  But remember, a driver can take a slow machine and make it faster!  I may not have/be the best of any of these but I'm trying!
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matthewfortson
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« Reply #2 on: December 01, 2013, 12:37:19 AM »

O so there wont be any damage done if I dis connect it? And thanks
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« Reply #2 on: December 01, 2013, 12:37:19 AM »

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Huffy044
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« Reply #3 on: December 01, 2013, 06:29:01 AM »

Early on I made a plate to cover this, installed a fitting and ran a hose over to a collection tank. I was able to keep an eye on how much oil was pushed out. Later I hooked this line to a vaccum fuel pump. This created negative pressure in the base of the engine which gave more power. As long a ring seal is good, this is a power adder.

As George says, "A lot of little things add up to a big thing"
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matthewfortson
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« Reply #4 on: December 01, 2013, 05:28:08 PM »

Could I just point some tubing upwardly
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DeereRacer
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« Reply #5 on: December 13, 2013, 11:34:58 PM »

Later I hooked this line to a vaccum fuel pump. This created negative pressure in the base of the engine which gave more power. As long a ring seal is good, this is a power adder.

Forgive my ignorance but how does a vacuum fuel pump make a vacuum in the crank case? I have thought about creating crank case vacuum for more power but was not sure how to do it on a mower engine.
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royalblu68f100
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« Reply #6 on: August 28, 2014, 06:40:14 AM »

They plumb it in to the side of the crankcase and pull air out. This will pull almost as much vacuum as it will provide pressure.
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You never win a race by focusing on one aspect of the race!  Motor isn't everything, but you better have a good one!  Chassis too!  But remember, a driver can take a slow machine and make it faster!  I may not have/be the best of any of these but I'm trying!
Chris Cox- CP/Mod X, AP
2014 USLMRA AP Runner Up
2013 USLMRA AP Champion
2012 SRUSAAO ModX/CP Champion
2012 USLMRA CP Champion
2012 US Open AP Champion
2011 SRUSAAO MOD-X/CP Champion
2011 USLMRA FX Points Runner up
2011 GALMRA CP Points Champion
2014 New AP, GP, CP, FXS???
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« Reply #7 on: August 28, 2014, 10:24:38 AM »

Correct Royleblu, the vac signal comes from the intake which has little to do with crankcase vac.
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« Reply #8 on: August 28, 2014, 11:44:11 PM »

Didn't think a fuel pump could pump enough volume to make a vacuum in the crank case. Do you use a standard stock pump or something else? Would you plumb the pump into the stock crank vent and close the valve cover hole?
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"There are three easy ways of losing money - racing is the quickest, women the most pleasant, and farming the most certain."

Well I got two of the three covered.
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