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Electric crankcase evac?????
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DRR Trophy
posted
Is there such a thing as an electric crankcase vacuum system? Or are all engine driven vane type?
 
Posts: 84 | Location: Mooresville, nc | Registered: October 11, 2013Reply With QuoteReport This Post
DRR S/Pro
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If I remember correctly a few decades ago some guys tried using a GM electric smog pump as a vacuum pump. Never tried it but the idea didn't last long so I guessing it didn't work very well.

Bob
 
Posts: 3089 | Location: Lakeside, Ca | Registered: February 15, 2003Reply With QuoteReport This Post
DRR Pro
Picture of CURTIS REED
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I have friends who use the electric GM smog pump on their engines. They do help get water out of the crankcase. They don’t build vacuum like a vane pump. A few inches of vacuum if everything is sealed up well. Don’t pull much under full throttle it they do what is wanted from them.



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Posts: 2959 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
DRR Sportsman
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Star machine has a few options


Denis LeBlanc

 
Posts: 472 | Location: Manchester, NH | Registered: February 03, 2006Reply With QuoteReport This Post
DRR Pro
Picture of AlkyIROC
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I think Star Machine is the best option. I tried an electric smog pump for a while. It's good to pull moisture from the crankcase when you're sitting in the pits but doesn't pull enough vacuum while going down the track. I've since switched to a belt driven pump.


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Posts: 1353 | Location: Calgary | Registered: June 06, 2001Reply With QuoteReport This Post
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There's a GM electric vacuum pump meant to supply the power brake booster that some people use. Can't remember the exact vehicles it was on, maybe diesels? It moves a fair volume of air.


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Posts: 1677 | Location: Indy | Registered: November 21, 2008Reply With QuoteReport This Post
DRR Pro
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I may try an electric pump with my next buildup. It seems like a good way to purge water after a day of racing.

https://grannys.tripod.com/evac.html


Larry Woodfin



 
Posts: 1836 | Location: Kilgore TX | Registered: March 12, 2004Reply With QuoteReport This Post



DRR S/Pro
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Pro’s used ( while back) an 18volt battery pack with a vac pump rear to boost vac to over 22. I’ll have to look next week. It can be done yes! If memory serves me the electric GM pump could only build 8-10? Better than nothing! Benefit with vac are huge.


Raceless in California!
 
Posts: 4522 | Location: Vacaville  | Registered: January 07, 2004Reply With QuoteReport This Post
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https://www.starvacuumpumps.co...ducts/STR.21.08.100K

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Posts: 2577 | Location: NV. | Registered: October 20, 2006Reply With QuoteReport This Post
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Picture of AlkyIROC
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quote:
Originally posted by Goob:
There's a GM electric vacuum pump meant to supply the power brake booster that some people use. Can't remember the exact vehicles it was on, maybe diesels? It moves a fair volume of air.


Some Vegas used them. Good luck finding one.
 
Posts: 1353 | Location: Calgary | Registered: June 06, 2001Reply With QuoteReport This Post
DRR Pro
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The one I used back in the day came off an S10 pickup I thought. OK for pulling some moisture out of the engine if you run alky, but nowhere near good enough to pull sufficient vacuum at WOT.
 
Posts: 1571 | Location: PA | Registered: February 26, 2000Reply With QuoteReport This Post
DRR S/Pro
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quote:
Originally posted by Goob:
There's a GM electric vacuum pump meant to supply the power brake booster that some people use. Can't remember the exact vehicles it was on, maybe diesels? It moves a fair volume of air.



Never seen an electric pump on the new diesels ? Maybe I missed that? All I’ve seen are pulley mounted diesel vac pumps. They can build 10” or more too.


Raceless in California!
 
Posts: 4522 | Location: Vacaville  | Registered: January 07, 2004Reply With QuoteReport This Post
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