Where can I get...
Turbo Mini Forums

an "anti back fire" valve from? Suitable for an evacusump system.

Cheers!

Please let me know how you get round this as I am trying this system too and I know steve 1275 will be interested.

FYI I am presently trying a non return valve from the emissions control system off a 2.5 V6 Omega.

its a landrover part.

I have one and might be willing to sell if i can find it, brand new. Its the same as the one Vizard describes in the book. Its not exactly small though.

I would have thought that any fully closing check valve would do the job

Something like this? http://www.jegs.com/i/Moroso/710/97800/10002/-1

[X] nail here for new monitor

As Dave says,I'm interested in this too-the curse of the inline engine.Please let us know any progress.

'Where does the engine go?'

Ive had evac sump in my mind for ages now, the principal is to allow the piston to come down on induction and after firing stroke easier, but does it not make it harder for the piston to go up for compression and exhaust stroke?
Im guessing the easier downward stroke outweighs the harder upward stroke - or am I just masturbating?

Paul

I seriously doubt it!

The two pistons going down equal the volume of the two pistons going up? In my head at least

Btw. if someone knows a supplier of those valves in europe - happy to hear about it. The americans are pretty clever when it comes to create senseless additional fees

@Sprocket: Do you have a part number for the Landrover valve?

Cheers,
Jan

[X] nail here for new monitor

How do they work then?

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1/4mile in 13.2sec @ 111 terminal on 15psi

On 11th Jan, 2010 Asphalt said:
The two pistons going down equal the volume of the two pistons going up? In my head at least

I seriously doubt it!

On 11th Jan, 2010 Asphalt said:
The two pistons going down equal the volume of the two pistons going up? In my head at least

Btw. if someone knows a supplier of those valves in europe - happy to hear about it. The americans are pretty clever when it comes to create senseless additional fees

@Sprocket: Do you have a part number for the Landrover valve?

Cheers,
Jan

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

done some light reading on these, and from what i gather, as the sump is under vacum there is less mass of air present. as a result any rotating or reprocriating assemblies have to move/interfere with less air, similar to reducing aerodynamic drag in a car. Only a beenefit on very high revving engines i would have throught.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Could a flashback arrester for oxy acetylene be used?

I would have thought that on most turbo motors with loose fitting forged pistons there would be some blow past on the rings. So getting the excess air out of the block has got to be a good thing?

Owen,


i just ordered this kit thinking V8=2 kits one for car and one for the bike
summitracing.com have pdf mounting instructions under moroso evac
I really want a belt driven vacum pump further on…



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internationally known as "big" swede

Instructions:

http://static.summitracing.com/global/imag...s/mor-25900.pdf

The question is, is the energy used by the pump more or less than you will improve your HP by? On our small engines will small HP figures I would think that it is marginal.

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A man without a project is like a like a woman without a shopping list.

Id guess that if a Mini waterpump uses about 4hp to drive it, a belt driven evac pump would use about the same?
I doubt we would see a positive gain tbh.

Ive read the Vizard article in his book about 10 times atleast in the last 5 years and am still umming and arring because we dont see these systems on working cars, no doubt it was done to death when Viz's book first came out so does that mean it wasnt that successful?

I would love to do it for the fun of it though and that 'just in case it helps' factor.

Paul

I seriously doubt it!

a swedish tuner claims 5-30 hp savings depending on engine size and engine internal leakage he uses both leccy pumps and beltdriven ones…

http://www.jpmotorsport.se/

internationally known as "big" swede

The only problem I can see is chucking oil out the exhaust

Why not solve the problem of having to fit an evacusump system and just fit Total seal gapless rings, thus pretty much eliminating blow by. Then a Normal PCV system will do the rest

2 other things Ive been thinking about,
If its easier on the oil control rings does that mean theres less lubrication in the bores?
And, a conventional evac system starts its cycle by the inlet manifold creating a vacuum in the rocker cover via a tube/hose between them, surely it will draw in oil vapour and even some oil to the inlet charge contaminating it and lowering the octane rating.

Paul

I seriously doubt it!