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Author Topic:   Crankcase to intake connection?
Elmo
Dirt Forum Racer

Total posts: 79
posted November 21, 2004 08:46 PM  
What happens if you make a connection from the crankcase to the intake charge? Can you gain crankcase vacuam this way? What are the downsides? (were talking a very small diameter)

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted November 22, 2004 05:58 AM  
you don't want to contaminate your intake charge with crankcase gases. try an angled tube welded into your header collector(s). connect the tube(s) to the crankcase and they'll draw a vacuum on the crankcase when the engine is running. drag racers have done it for years. moroso makes a special kit...

vosevichs
Dirt Forum Racer

Total posts: 78
posted December 02, 2004 12:51 PM  
I've seen those systems on Dragsters but never on a dirt car. Is that Moroso kit especially for dirt track motors. Or is it the same as the dragsters?

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Scott Vosevich
RDBoyz Racing

cozmo
Dirt Forum Racer

Total posts: 99
posted December 02, 2004 03:20 PM  
I have used the moroso kits on one of my mods and it worked good

coz

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted December 02, 2004 05:47 PM  
vosevichs, if you try this, use the moroso kit. it's been a while but i believe the tubes in the kit have a one way check valve in them that keeps exhaust gases out of the crankcase. also, if you're running mufflers, install the tubes AFTER the mufflers.

vosevichs
Dirt Forum Racer

Total posts: 78
posted December 03, 2004 08:39 AM  
I've found that Moroso kit. It's the same as the dragsters. You just mount it to the left valve cover. Yes Outlaw there is a 1 way valve that mounts to the header. And it's recomended that you install baffles in the valve cover to keep from sucking oil out.

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Scott Vosevich
RDBoyz Racing

Bracer
Dirt Roller

Total posts: 7
posted December 03, 2004 03:12 PM  
it also helps if you have an oil leak that just seeps and don't want to pull the engine apart. I've used them on every engine I have ran on my street stock.

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