Plenums

[streetF6]

BTW I will start off with providing $100.

I'll put in $100 as well

[ETM]

There is no point as a flow bench is not the way to test a plenum. Flow bench testing is static testing and will give results that really have no relevence to how it will perform on a runing engine wth valves opening and shutting everywhere.

[Ghosti]

Plus if history is anything to go by, the test will never happen and will end up in at least several closed threads eh?

[Guest EGOXRT]

It will if you flow it on a head or use software that will simulate fluid dynamics.

[typhoon_freak]

youve got plenums, anyone looked at designing the inlet runners differently, like the nitto plenum? where its all in one? or sumthing along those lines

[01txr]

You only have to look inside the opening of the PW plenum and think of where it has to travel to

enter the runners.

eg comes in and hits a raised 90 deg wall that is trying to protect it from air entering the runner.

not like slipping into a hole with a nice radius edge.

I would think the plazmaman plenum would work better low to mid in the power range at lower boost

pressures. The PW would start to catch up in the mid to top end when plenty of boost is being used.

That 9 second engine looks a bit low on coolant there or has it not run yet and having the

plenum just fitted as well as something with the coolant system.

So what car is this plenum on that runs 9's and what power did it make, is it full street trim & weight.

best way to test them would be to use one engine that is tuned for say eg (nizpro plenum) then without

any tune change swap them over and see what results show.

Dont know if a Flow bench would show much differance, best thing would be to add a camera

just before Throttle body with use of a dye and observe the flow patterns at different boost

load and rpm while at the same time power levels being made on dyno.

just noticed the Gtech car runs a nizpro plenum and runs deep into the 9's, it must be better

than the PW one.

Was it the Tisso ute that ran over 600rwkw using a Plazmaman plenum, also from Hi Torque

is another Yellow F6 running Plazmaman plenum cooler and pipe work also just realed of a tyre

frying 740+ odd rwhp.

What cars at the top of the drag list are running what plenum.

[Process West]

You only have to look inside the opening of the PW plenum and think of where it has to travel to

enter the runners.

eg comes in and hits a raised 90 deg wall that is trying to protect it from air entering the runner.

not like slipping into a hole with a nice radius edge.

I would think the plazmaman plenum would work better low to mid in the power range at lower boost

pressures. The PW would start to catch up in the mid to top end when plenty of boost is being used.

That 9 second engine looks a bit low on coolant there or has it not run yet and having the

plenum just fitted as well as something with the coolant system.

So what car is this plenum on that runs 9's and what power did it make, is it full street trim & weight.

best way to test them would be to use one engine that is tuned for say eg (nizpro plenum) then without

any tune change swap them over and see what results show.

Dont know if a Flow bench would show much differance, best thing would be to add a camera

just before Throttle body with use of a dye and observe the flow patterns at different boost

load and rpm while at the same time power levels being made on dyno.

just noticed the Gtech car runs a nizpro plenum and runs deep into the 9's, it must be better

than the PW one.

Was it the Tisso ute that ran over 600rwkw using a Plazmaman plenum, also from Hi Torque

is another Yellow F6 running Plazmaman plenum cooler and pipe work also just realed of a tyre

frying 740+ odd rwhp.

What cars at the top of the drag list are running what plenum.

Reserve your judgement for a few months..there are a few heavy hitters coming out very soon tuned by the best who know what works and want doesnt.

BTW...the pic of my plenum in the post above is from a car in my workshop from a few years ago...not the said 9 sec car...it is here.

http://www.fordxr6turbo.com/forum/index.php?showtopic=58518

Kev

[mr gsr]

Just to jump in on the plenum debate....

I run now run a PW plenum on my car after running kev's stage 1 kit...

Went in first with the following:

PW Stage 1 Cooler

Hot Side piping

Bosch pump and surge tank

Tunehouse 4" exhaust

F6 CAI

Dynoed 325rwkw on 15 psi.....

Then changed the cooler to Stage 2, added the PW Race intake and fitted the plenum...

It made the same power on 12psi... Boost couldnt be raised due to the car now experiencing valvespring issues...

Interesting, the power curve was near identical (no losses anywhere) and held onto the power longer on 3psi less boost.... Torque delivery and throttle response is much improved as well....

On the road, power hits much harder than the Stage 1 with 15psi.....

Car will be going back on the dyno shortly....

Edited 30/06/09 11:43 AM by mr gsr

[RAP1D]

Hey Jason, is that the BF xr that was tuned at CHE awhile back? Looked nice.

Bad luck on the Vsprings, you must be one of the unlucky BF owners that got soft springs, most go well over 325.

Throw some pics up dude

[Bad Apples]

There is no point as a flow bench is not the way to test a plenum

I disagree and am prepared to contibute $50.

All laboratory tests are, by design, different to real world applications. We do this in order to reduce the number of variables. so we don't simulate the valves and how their pressure shockwaves propagate around the plenum. I assume we can measure the flow in and out to each individual runner simultaneously? The things that I would like to see varied is flow rate (say 20lb/min and then a 60lb/min) and maybe heat the air in so we can have a dense air vs hot air comparison. For me I would mostly be interested in the plenum that provided the most even distribution to each cylinder, under all these conditions rather than which one acheives the peak flow in any one cylinder in any one test.

Still don't think it'll happen...

Cheers.