Author Topic: air filter adapter help  (Read 3442 times)

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Offline matthewfortson

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air filter adapter help
« 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?



Offline royalblu68f100

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Re: air filter adapter help
« 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).
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
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Offline matthewfortson

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Re: air filter adapter help
« 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


Offline Huffy044

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Re: air filter adapter help
« 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.

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Offline matthewfortson

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Re: air filter adapter help
« Reply #4 on: December 01, 2013, 05:28:08 PM »
Could I just point some tubing upwardly

Offline DeereRacer

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Re: air filter adapter help
« 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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Offline royalblu68f100

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Re: air filter adapter help
« Reply #6 on: August 28, 2014, 05:40:14 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.
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
2016 ALL AMERICAN CP/Mod X Champion
2015 USLMRA AP Champion
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


Offline Huffy044

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Re: air filter adapter help
« Reply #7 on: August 28, 2014, 09:24:38 AM »
Correct Royleblu, the vac signal comes from the intake which has little to do with crankcase vac.
VLMRA Singles Points Champion 2006
VLMRA Mini Champion 2007
VLMRA Sportsman Champion 2007
VLMRA Pro-X Champion 2008, 2009
ARMA Sportsman of the Year 2008
ARMA South East Region Mini 2009, 2010, 2011,2012
ARMA National Champion Mini 2009, 2010, 2011,2012, 2013
Maxton NC Model A Record Holder 118.54
VGMR 1932 Model A roadster world record 165.8

Offline DeereRacer

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Re: air filter adapter help
« Reply #8 on: August 28, 2014, 10:44:11 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?
"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.
Martin
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#83
Michigan