Custom Plenum

[macka'sxr6t]

  NOS XR said:

may I turn you guy towards Volume 5 Edition 2 of Performance Ford Mag page 17 and 18 for the close up. Cheak out the pic's at the mags web site.

I think you'll find the owner of this cool car has changed his intake to or from the Nizpro plenum any way clearly we are both right.

Wonder why you'd change the Plenum from the custom job to the Nizpro plenum?

<{POST_SNAPBACK}>

I would personally go for the Nizpro plenum. Knowing how Nizpro produce only quality results, you canbe sure that they has spent considerable time and dollars getting the plenum design right.

macka

[F6 RAPID]

  TWEAKN said:

the nizpro inlet looks great and is front entry!!!

and it looks the goods

the aps inlet is a side entry which means that all holes get the same amount of air!! it also has spots for more injectors if need be!!

looks wise I would go for the nizpro

performance wise I would go for the aps(but only just)

I would love to see flow testing on both inlets as I do not know the numbers!!

Rubbish.

The same "all holes - same air" debate has been done. If the manifold is under pressure, ie boost, then it is forcing air into the intake valves regardless of where they sit.......... look at all the high-po nizpro kitted cars to know it works - mine seems to.

And unless you have personally tested the APS and Nizpro plenums back to back on a flow bench, how would you know that the APS plenum is better performance wise??? and then state you don't know the numbers?? I'll have Brian's engine anyday!

[Mr Turbo]

  jetmir said:

You might want to ask Rob (Mr Turbo) as hes got a custom plenum in his T.

This is my plenum which was made by OMF Motorsport in Melbourne. They also do alot of work for HPF, Twin turbo setup on the 9 sec monaro and made Geea's surge tank, just ask him the quality of the workmanship. I think its over 7 ltr not exactly sure. Front entrance to minimise the plumbing and temperature away from the hot engine.

Rob...

[Guest xrtwpn]

I think the only plenum to date that has been proven to do anything is the nizpro one with huge power figures and fast times

I dont think its the best as it doesnt force air into the engine like a plenum should it just holds large amounts of air which is great for a N/A engine but not a F/I engine but it is still the best option at the moment

But if I were to buy one the nizpro one is the only one I would touch as I know HPF had huge problem trying to tune Mr turbos plenum and there is no real proof on whether it works or not and whether it was even flow tested and im sure nizpro would have flow tested theres

Not having a dig at you Rob just pointing out some facts

[Mr Turbo]

  xrtwpn said:

But if I were to buy one the nizpro one is the only one I would touch as I know HPF had huge problem trying to tune Mr turbos plenum and there is no real proof on whether it works or not and whether it was even flow tested and im sure nizpro would have flow tested theres

Not having a dig at you Rob just pointing out some facts

But that's not the facts.

That wasnt the Plenum that HPF had problems with Adam. When the car was first tuned with the new setup it was fine and very smooth, just ask danny. Then the following week I hit the rev limiter going onto the freeway and ever since then the car has been playing up a little and bad idel, im thinking a slight bend rod? There is nothing wrong with the setup, mid and top range power is amazing! I know for fact the car now has a 10 in it.

Rob...

[turbotom]

  Mr Turbo said:

But that's not the facts.

I hit the rev limiter going onto the freeway and ever since then the car has been playing up a little and bad idle, im thinking a slight bend rod? There is nothing wrong with the setup, mid and top range power is amazing!  I know for fact the car now has a 10 in it.

Rob...

And you're still driving with a suspect rod?

And you're a pilot too?

c'mon mate, you're NOT serious, are you?

tom

a.k.a. tubby,turbotom,68vet etc etc

Edited 21/12/05 05:22 AM by AdamXR6T

[Mr Turbo]

Yeah Vet, its the only thing I can think of. Cant a slightly bent rod chuck it off balance which explains why they cant tune it like before? Like I said the car was running perfect up untill this happened.

This is how it went. Pulled over on the emergency lane from a freeway to take a phone call. I used 3rd gear as an engine brake and slowed the car down. Once the chat was over I pulled back onto the freeway in style, foot right down and wheel spin but forgot the car was in 1st gear. It hit the rev limiter which bounced up and down 3 or 4 times. So ever since this event car is not that well, so im thinking it must be something internaly?

Rob...

[Adam]

Rob it seem like your car is down on power or is it just not running as smoothly as before?

[geea]

  boosted_sa said:

I'm just looking for some information on Custom Plenum Design and Litre capacity.

I'm currently in the progress of manufacturing a new plenum so I can have it front entry and shorten the IC plumming. Info would be appreciated from anyone that has built one or has had one built. Is the tapper nassary? I have already made a model and it calculates to 7.6ltr capacity, right size??? I will be making it out of 5mm alumimium and tig welded. Once finished it will go on a flow bench to see how well it performs!

Cheers Kym

<{POST_SNAPBACK}>

I may aswell give my 2c worth.

Kym what current mods do you have and what power are you chasing? My car is still running the factory plenum and has 380rwkw's and runs 10.6. Unless your wanting more than this I'd be working on alot of other things first. With the skills you have I'd suggest the following.

1) 2lt surge tank

2) make a nice custom exhaust with a cat pipe and have twin pipes out the back.

3) custom coldair intake under the battery with large pod filter in front guard infront of wheel.

4) possibly an intercooler with plumbing.

Just some ideas.

Geea.

[bcl]

  geea said:

I may aswell give my 2c worth.

Kym what current mods do you have and what power are you chasing? My car is still running the factory plenum and has 380rwkw's and runs 10.6. Unless your wanting more than this I'd be working on alot of other things first. With the skills you have I'd suggest the following.

Geea.

<{POST_SNAPBACK}>

Fair enough Craig, but what we don't know is what benefit there is in adding a plenum, when measured at the various power levels.

Be it 10, 20, 30rwkw for the $$$, either after people have done the basic mods, or as part of a kit.

From memory Nizpro's view was that there was around 20rwkw when applied to something in the low 300rwkw level. I could check with Simon on that.

Obviously throttle response must improve with 4-5 metres of inlet plumbing removed if efficiently installed, and less chance of heat build-up.

Brian