cruzin33 Posted October 26, 2007 Share Posted October 26, 2007 Iv got a no name forward facing plenum on my rb25det and im not sure if the air flow is even and would like to know if its worth putting on my soon to be rb25/30 so im looking for a place that can flow test the plenum. Also lookin for info and a place that can help me with porting a throttle body(If it can be done) and porting the standard manifold. Cheers Dave Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/ Share on other sites More sharing options...
mid life crisis Posted October 26, 2007 Share Posted October 26, 2007 try pro action spares if they cant do they will know someone who can Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3437562 Share on other sites More sharing options...
Madaz Posted October 27, 2007 Share Posted October 27, 2007 is that one of those cheep eBay jobs wouldn't it be an idea to pressure test too? Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3438686 Share on other sites More sharing options...
cruzin33 Posted October 27, 2007 Author Share Posted October 27, 2007 Im not sure i got it with the car but i like the look of it as it looks stock no brand names and its clean but if its has a shit flow il put the stock one on only pic i can find very old and dirty bay lol Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3438727 Share on other sites More sharing options...
Madaz Posted October 27, 2007 Share Posted October 27, 2007 na looks a little different to the ebay ones cant find the crappy ones but this looks ok click both images to goto ebay Found this a Greddy one Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3438942 Share on other sites More sharing options...
cruzin33 Posted November 1, 2007 Author Share Posted November 1, 2007 try pro action spares if they cant do they will know someone who can Do you have the number? i cant seem to find them Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3449176 Share on other sites More sharing options...
cruzin33 Posted February 7, 2008 Author Share Posted February 7, 2008 I took my 1st and 6th cylinder spark plugs out today and was suprised to see they are pretty much the same should i take this as a good sign with the forward plenum? Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3629924 Share on other sites More sharing options...
cruzin33 Posted February 7, 2008 Author Share Posted February 7, 2008 I just called milton engineering and they told me that plenums cant be tested for flow rates to see if air is the same in each cylinder. They said my best option is to stick a sensor in each runner and get a dyno tune. If i go ahead with this(more research first) can i tune it to run the same in each cylinder from a power fc or is it just to see the reading? Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630153 Share on other sites More sharing options...
heslo Posted February 7, 2008 Share Posted February 7, 2008 That looks like the stock plenum has been used and just cut and shut Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630302 Share on other sites More sharing options...
Oosh Posted February 7, 2008 Share Posted February 7, 2008 I'm always pretty sus on plenums, pretty complex bit of engineering to go messing with, and some dire consequences too... Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630341 Share on other sites More sharing options...
=premo= Posted February 7, 2008 Share Posted February 7, 2008 Lewis Enignes can flow test and regrind/port it for you 08) 8391 6125 they can also CNC port your head for the best possible flow. Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630448 Share on other sites More sharing options...
cruzin33 Posted February 7, 2008 Author Share Posted February 7, 2008 Cheers for that il give them a call tomoro and see what they can do for me. I just took the plenum of and hade a look inside to see that it is a cut and shut job and that its been smoothed out to hide the job Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630512 Share on other sites More sharing options...
Deluxe Posted February 7, 2008 Share Posted February 7, 2008 Now i'm not giving you sh!t, but can you now see why your engine may have blown on a Specific workshops dyno?? Like you said you bought it like that, but i just don't see why people need to cut and shut things like that when they are playing with so much money, It's like cutting springs in a car, why? when they only cost a whole lot of F#$k all!! Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630533 Share on other sites More sharing options...
cruzin33 Posted February 7, 2008 Author Share Posted February 7, 2008 My engine isnt blown? Im getting it rebuilt but trying to do most of the work myself and the rest by boostworx Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630542 Share on other sites More sharing options...
Deluxe Posted February 7, 2008 Share Posted February 7, 2008 Thats alright i coulda sworn in another thread someone was giving said workshop shit because there car had issues on dyno, and it had a plenum like yours!! Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630577 Share on other sites More sharing options...
cruzin33 Posted February 7, 2008 Author Share Posted February 7, 2008 lol thats ok i know what thread you are talking about Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630617 Share on other sites More sharing options...
=premo= Posted February 7, 2008 Share Posted February 7, 2008 Now i'm not giving you sh!t, but can you now see why your engine may have blown on a Specific workshops dyno?? Like you said you bought it like that, but i just don't see why people need to cut and shut things like that when they are playing with so much money, It's like cutting springs in a car, why? when they only cost a whole lot of F#$k all!! ??? The shortest most direct path is generaly the best as long as even flow is obtained to each port. Whats been done isnt a bad thing and certainly not something to get worked up about. I could maybe understand your response if someone did this to your car without asking. Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630640 Share on other sites More sharing options...
Deluxe Posted February 7, 2008 Share Posted February 7, 2008 ???The shortest most direct path is generaly the best as long as even flow is obtained to each port. Whats been done isnt a bad thing and certainly not something to get worked up about. I could maybe understand your response if someone did this to your car without asking. Think about it........ The standard one was no doubt designed that way(eg in the middle) for a reason, Don't get me wrong on our RA40 3sgte race car we have it from the front, but we never cut and shut a working standard one, which is the way it was desinged for, What i'm saying is go out and spend the coin on a aftermarket one which has been proven to work, trust me, saves you in the long run!! You said it yourself "as long as even flow is obtained to each port", clearly coming from the middle on this specific plenum was the way the flow was directed and made!! Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630695 Share on other sites More sharing options...
=premo= Posted February 7, 2008 Share Posted February 7, 2008 I understand what your saying but spending money on aftermarket ones isnt always the best option, the best flowing plenum I've seen was made from a factory one. The main difference was the angle that the intake joined to the plenum and the overall size had been increased. Alot can be done with the right tool's/skill's. Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3630718 Share on other sites More sharing options...
ovrtym33 Posted February 7, 2008 Share Posted February 7, 2008 Thats alright i coulda sworn in another thread someone was giving said workshop shit because there car had issues on dyno, and it had a plenum like yours!! ok then if u think this is such a bad thing then why did boostworx the workshop that u go 2 recommend me 2 do this same cut n shut 2 my car if they new it was a bad thing 2 do which they said was a perfectly good thing 2 do and nothing wrong with it, plus thats not the reason for them blowing my car up on the dyno, i have taken my car 2 morpowa, willall racing, nisspeed, hi tech dyno and none of them have said it was a bad thing 2 do 2 ya plenum so in other words u r paying out your own tuner Link to comment https://www.sau.com.au/forums/topic/190947-flow-testing-a-plenum-some-porting/#findComment-3631162 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now