Winter Projects Finished

[niduncan]

Modified the air filter this evening, should keep Big Jim happy!

[Guest salty_monk]

 

Perfect! What make is that one??

 

Dan

[Guest docter fox]

I think it looks quite good was it easy to make as mine's ripped...

[niduncan]

I bought a mushroom filter on ebay which was to tall to fit.

I retained the base plate of the pancake filter, used the external metal mesh cut down by 20mm, from the mushroom filter as the inner mesh. Drilled a small hole every 30 degrees around the base plate. Put the mushroom filter foam over the mesh and then used cable looming tape to tie it down.

Job done.

[Longboarder]

Still think you would be better off drilling the manifold plenum. I don't think the relationship is inversely proportional and the software may have trouble counting backwards.

 

Nigel

[niduncan]

I am sure the software would handle it but I have just remembered that I have a blocked off a vacuum takeoff where the crankcase breather attatches to the manifold. I shall stick the Magajolt on that tonight and see what happens.

[Guest Giggling_Buffoon]

Might be worth checking whether you are measuring total or static pressures... (just to add to the confusion...)

 

If anyone is interested I have a nice set of 'Q' curves - basically airflow through a dynamic loss is a function as follows:

 

m(T^0.5)/P1(Cd.A) = Q = F(P1/P2).

 

So you put in you pressure ratio and get Q from the curve. Then by having the effective area, upstream pressure and temperature you get mass flow.

 

Dead simple.

[will]

oh yeah... dead simple... Not!

[niduncan]

I think I agree with Will!

[Guest docter fox]

I think I'll stick with mine and ignore the hole

[Longboarder]

I have a nice set of 'Q' curves

Another contender for a yellow car.

 

Nigel

[Guest docter fox]

they must be spreading