Why do blower motors surge? - Chevelle Tech
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  #1  
Old May 24th, 08, 11:57 PM
SethT SethT is offline
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Default Why do blower motors surge?

Titale says it all I guess. Just wondering why the surge at idle.
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Old May 25th, 08, 12:47 AM
Camaro_fever68 Camaro_fever68 is offline
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Default Re: Why do blower motors surge?

Some people don't like the surge but I love it.

Here's a couple threads with the question being asked.

http://www.chevelles.com/forums/show...+motor+surging

http://www.chevelles.com/forums/show...t=Blower+surge
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Old May 25th, 08, 12:48 AM
Chevelle 6-71 Chevelle 6-71 is offline
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Default Re: Why do blower motors surge?

It's basically the motor going lean / rich / lean / etc. It can be tuned out most of the time.
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Old May 25th, 08, 1:18 AM
pdq67 pdq67 is offline
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Default Re: Why do blower motors surge?

Cam!!

pdq67
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Old May 25th, 08, 2:31 AM
Tokyo Torquer Tokyo Torquer is offline
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Default Re: Why do blower motors surge?

If you are talking about a big olfd fashioned roots blower, there are a few factors like camshaft design, but one specific to the blower is that as the rotors turn, they take big gulps off air which is not so smooth and the charge pulses. The more rotors you have and the more helical they are, the less they pulse and the smoother the idle. This is why the latest blowers have 4 lobes and 160 degree cut rotors.
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Old May 25th, 08, 5:57 AM
Nolowrider Nolowrider is offline
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Default Re: Why do blower motors surge?

Quote:
Originally Posted by Chevelle 6-71 View Post
It's basically the motor going lean / rich / lean / etc. It can be tuned out most of the time.
That is what I have heard too.
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Old May 25th, 08, 12:49 PM
eric13617 eric13617 is offline
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Default Re: Why do blower motors surge?

That's right.It can be tuned out,if you want to.

We run a huge sollid roller;.801 lift,300 degrees duration@ .050, on a 115LSA,in the race car.It does not lope at all.
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