UAS RB20/25 Intake Plenum.

[Boosted Zed]

Reason is we have been way too busy leading up to our track day which is now over, Abrasive flow has also been too busy as he was extrude honing my turbo's and had to make tooling etc and Oyay, Plazmaman has also been very busy, he also made a new intercooler for my car which we logged at the track and max inlet temps were 25c ambient around 16c so very good with the power it makes.

Anyway all in the clear now and won't be long. Yes test before and after is the go and conslusive.

By the way has anyone tested Greddy ones at all or just believe the sticker??

[Blitz]

i have just spent a while looking at this thread.

in all honesty i truly belive that $1500 to get a throttle body located at the front of the engine bay is madness, expecialy when you still have the stock bottom half of the factory intake runners bolted to the engine.

as for putting shit on the greddy intake......well that just takes the cake for me!!

fancy anyone saying that a company like trust/greddy cant make an intake as good as one slapped together in australia wich still uses the stock bottom half and a shiney peice af aluminiam on top, what a rip off!!

i think we all should put our heads together and help out greddy because they obviously dont know what there doing??? they proberly dont even test there products???  maybee there got no idea whatsoever??? mmm i wonder if they even heard of the word nissan???

dead set!!

Clearly you have no idea, so how about you quit before you embarass yourself further

[GTRgeoff]

I neither have the time or patience to have a battle of wits with someone who is so obviously completely unarmed.

The trouble with arguing with idiots is they will drag you down to their level and beat you with experience....

[Boosted Zed]

I neither have the time or patience to have a battle of wits with someone who is so obviously completely unarmed.

The trouble with arguing with idiots is they will drag you down to their level and beat you with experience....

You know it and been there lots and I should learn.

[proengines]

I've just been reading through this thread and well done John, I hope the plenums are a good seller. It suprises me though, some people are very quick to knock something without trying it. One thing that always suprises me is that with anything made for a car, some people will call it overpriced based on the cost of the materials to build it without taking into account the time that is spent designing, developing and tooling up to produce it.

It seems to be a pretty common comment "that couldnt cost more than $XXX to make." Some of would be suprised how much it costs just to open the doors of your workshop each day before you make any profit.

The same people who complain about the price of this type of stuff compared to the cost of material in it are the ones who will go out and buy a playstation game of piece of software for $80 that costs about $1 to produce once the development is done or pay $150 for a Nismo gear knob or HKS oil cap that is $2.50 worth of alloy with a 20c sticker on top.

[Duncan]

The same people who complain about the price of this type of stuff compared to the cost of material in it are the ones who will go out and buy a playstation game of piece of software for $80 that costs about $1 to produce once the development is done or pay $150 for a Nismo gear knob or HKS oil cap that is $2.50 worth of alloy with a 20c sticker on top.

:werd: :werd: :werd: the internet is full of kids who do not understand the costs in running a business

[B-Man]

Check this:

[Roy]

You cant trust dodgy boilermakers, thry are a strange breed:)

[Boosted Zed]

Received the results from flow bench test yesterday done with the runners bolted together and was quite a few hours to set up and back to back tests. The stock plenum maximum variation is 26.5 being from one of the centre runners that the throttle body shoots most fo the air at and the lowest was number 1. Plazmaman maximum variation was 16.9 cfm both tested at 25 inches of water. The equation would probably be much worse with high boost. The other benefit and mainly for big turbo's and high boost is that the Plazmaman plenum is much larger in volume. Another benefit which ever plenum you use is match porting and porting of heads.

[DoughBoy]

Check this:

Trick setup, but there is no way in hell that car would need twin throttles. Just on turbo size alone it's not going to have the airflow.

Referring to other (drag) cars, it looks like the change from a single 100mm to twin xx ones is at the 1500hp mark...

[TurboX]

Received the results from flow bench test yesterday done with the runners bolted together and was quite a few hours to set up and back to back tests.  The stock plenum maximum variation is 26.5 being from one of the centre runners that the throttle body shoots most fo the air at  and the lowest was number 1.  Plazmaman maximum variation was 16.9 cfm both tested at 25 inches of water.  The equation would probably be much worse with high boost.  The other benefit and mainly for big turbo's and high boost is that the Plazmaman plenum is much larger in volume.  Another benefit which ever plenum you use is match porting and porting of heads.

Reading this complete thread it occurs to me that SK has stated a few times that you cant go by the figures produced by the normal FlowBench procedure of a vacuum drawn airflow out of the valve end of the manifold runners in deducing the effectiveness of cylinder distribution in particular.

Is it not possible to measure the different manifolds in this discussion by reverse flowing them - OR as in under boost - feeding from the throttle body on through to the valve end?

Could this show the effects of the different configurations from a measurable perspective to each cylinder?

I have produced my own Custom RB20 Intake manifold that was based on my requirement to try to fill the torque hole of the RB20 and also gain the other benefits of reduced piping and lag. I designed it to incorporate the long runners to promote low/mid range torque with good top end and I doubt no other manifold here would address this issue as well as my unit FOR AN RB20!.

By the way this took a good ten hours or more of actual custom work to produce and I would not be selling them for less than $1000 if anyone wanted one so I dont think the UAS unit is too expensive for what you get compared to mine.

Great job John, look forward to the definitive dyno results when available.

More here

[Boosted Zed]

Turbox when I first looked at your pic on your post I thought you owned a BMW as it looks very professional EURO look. Interesting and professional design.

Re flow figures correct it is only an indicator but a fairly good one. It is no accident or surprise that the Plazmaman one independently tested by James from Abrasive Flow Engineering on his proper flow bench test flowed much more evenly. Also as mentioned in reality the difference would probably be more. We have done the dyno test but He has done lots of testing for us and we use his info on our zed race car for tuning cylinders as we know which ones get more air as an indicator anyway and trim injectors with Autronic to suit and found to be correct. He does lots of extrude honing of GTR and ZED exhaust manifolds for us and flow bench tests before and after and ports and extrude hones to suit and to bring up the lazier runners to even out and increase flow.

We have not done back to back tests yet with plenum and yes we will do this.

[Roy]

How good does that look:) Been putting in the work Greg:thumbsup:

You look to have done a great job, plenty of attention to detail, in looking at the pipe before the throttle body with what appears to be a BOV, very tidy packaging, very nice:)

With the painted inlet manifold, is that crackle paint or just paint over the std casting?

[TurboX]

Turbox when I first looked at your pic on your post I thought you owned a BMW as it looks very professional EURO look. Interesting and professional design.

Thanks John, all the time, trouble and expense was worth it. (I think;-) Sorry SK.

 

How good does that look:) Been putting in the work Greg:thumbsup:

You look to have done a great job, plenty of attention to detail, in looking at the pipe before the throttle body with what appears to be a BOV, very tidy packaging, very nice:)

With the painted inlet manifold, is that crackle paint or just paint over the std casting?

Hi Roy, thanks, it took a fair bit of work just to do that BOV PIPE. The crackle finish is from a Pro shop that talked me into it as he said it would look more factory and Euro as John mentioned. I was going to polish it but the black looks OK.

How's your banged up baby going?

[Sydneykid]

Thanks John, all the time, trouble and expense was worth it. (I think;-) Sorry SK.

No apology required, but you only "THINK" it was worthwhile. I think it looks very nice, not ricey at all. Does that mean you are not sure whether it works or not?

[Boosted Zed]

By the way I spoke to James re flow bench tests suck or blow he has found to be identicle in many items tested, when he has taken the time to test both ways. No he did not set up this test with Plazmaman plenum on blow only suck. Ittakes quite a bit of time to jig up to do the test.

Also I was over at Plazmamans this week and he had about 15 ready to just needed polishing.

[TurboX]

No apology required, but you only "THINK" it was worthwhile.  I think it looks very nice, not ricey at all.  Does that mean you are not sure whether it works or not?

Unfortunately thats the case. :Oops:

As I did many other mods all at the same time there was no definitive result I could attribute to the Intake manifold.

While the RB20 did drive much better overall with more power it was the sum of all the mods including a new custom turbo.

I will in time remove it to put on our Valiant Drag car 's RB20 which has a standard intake to test the difference and will let all know then.

While I totally agree with your thoughts in this matter based upon logic and dollars vs other Mods, I am extremely happy with the look alone.

[Boosted Zed]

By the way Benm mentioned way back on this thread his dyno reading although his car has adjustablecam gear on exh cam. I found dyno reading of a car we did dyno run before and after a while back. This one is one of the better ones but gives an idea of gains and yes back to back on our dyno same day.

http://300zx.com.au/Dyno/UFOR33.jpg

[PALADN]

Just finished reading the full 7 pages. Flow mech is a very though business to be in because everyone has their own ideas about how it all works.

I say hats off John Looks to me like you have spent a lot of time and money on this project. I am very interested in getting one of these kits from you and doing the dyno work b4 and after. Just to put a few people in their place.

By the way to those that are knocking the price. :Bang: Sounds to me like you really are stuck on JAP brand names. If you read alot of tuner mags even the big brand names are modified b4 being installed on any vehical. :kick:

Guys to all of you that have put in informative comments about this product I thank you. hats of to SK for bringing up alot of issues.

By the way John PM sent

[siksII]

i went in the uas yesterday saw the plenum, very well made excellent finish definetly not something you could throw together for cheap.