DATN510 Posted November 21, 2011 Author Report Share Posted November 21, 2011 Yes the tps will be pointing towards the corner of the fender. Quote Link to comment
DATN510 Posted November 21, 2011 Author Report Share Posted November 21, 2011 Yes mike explained that part to me on the diameter of the runner. How do I get the air going into penum not to go into #1 cylinder? I have a set of Shorty volocity stacks and a set of 2 1/2 inch stacks. Quote Link to comment
Z-train Posted November 21, 2011 Report Share Posted November 21, 2011 Yes mike explained that part to me on the diameter of the runner. How do I get the air going into penum not to go into #1 cylinder? I have a set of Shorty volocity stacks and a set of 2 1/2 inch stacks. Million dollar question.With the angle,the air going into #1 is going to have a short straight run..Not good for "things being equal"department.THe stacks would help,but i can't say if they are the answer.I'm going to be talking to some "in the know" folks soon.I'll put it past them and see what they say.If i were you,i'd start asking some posers to some people that build manifolds for a living.Better to ask questions now. To be sure of things,you'd want to put the manifold on a flow bench.And i know that's not what you wanted to hear. :( Quote Link to comment
Z-train Posted November 21, 2011 Report Share Posted November 21, 2011 Been mulling this all morning.THe stacks would be a good start to minimize the "ram air" effect on the first runner. Quote Link to comment
DATN510 Posted November 21, 2011 Author Report Share Posted November 21, 2011 I've been reading alot on air flow on the air chamber and how it works pertaining to this situation, but haven't found anything yet. Does anyone know what it looks like inside the Plenum? And thank you for all your help. Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 All righty then, I've been dooing my home work on this plenum cover design and air flow on EFI systems and also talked to a few professionals on the matter. And didn't get anything solid. from what I learned on the web and what you guys have told me, I came up with my own solution. So I changed my plenum design to what I figured would work with my setup. This is what I came up with. I made it larger in the front and angled the end to keep the air flow even, and I sealed the plenum in. Then I thought How can I measure this................................................Then I remembered I have a sinc for my webers but that only measures suction...........................Thinking again I modified my vacuum, I put a restrictor in the middle with duct tape and hooked it up to the air chamber. Turned on the vac. and got some great readings from the sinc. #1 #2 #3 #4 All these ports had the same readings with the sync, I then switch the vac to blower to see how that ran of course I had no way of measuring this so I listend to each port and they all sounded the same. I guess my question is that is this test accurate? 1 Quote Link to comment
Z-train Posted November 22, 2011 Report Share Posted November 22, 2011 Did you block off the other ports while you were testing one? Quote Link to comment
Z-train Posted November 22, 2011 Report Share Posted November 22, 2011 Bill! Exactly! From a 413? My slant six was supposed to be 'ram tuned' also. :lol: The intake runners were quite long. It was a 413.I forgot how big it is now.Nifty-friggin'-neato car. Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 Did you block off the other ports while you were testing one? No I did not, should I and run the test again? Quote Link to comment
Sealik Posted November 22, 2011 Report Share Posted November 22, 2011 Did you block off the other ports while you were testing one? I was thinking the same thing....but then he would get 100% flow from vacuum....???? Which would give all the same readings.... on all the ports The Unisnyc should be sealed to each individual port....other ones left open? Quote Link to comment
Z-train Posted November 22, 2011 Report Share Posted November 22, 2011 Turn it around.Seal the meter to the TB"flange"and then seal the hose to each port while the others are taped shut.At least that way you'll be "sucking the right way" :blink: Of course this isn't going to simulate the real deal,but it MIGHT give you some info to make a reasonable guess with. Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 I was thinking the same thing....but then he would get 100% flow from vacuum....???? Which would give all the same readings.... on all the ports The Unisnyc should be sealed to each individual port....other ones left open? That's how I did the original test, I left all the ports open and just put the sync on one at a time. Quote Link to comment
Z-train Posted November 22, 2011 Report Share Posted November 22, 2011 I was thinking the same thing....but then he would get 100% flow from vacuum....???? I don't have to say this is not a realistic way of going about this.BUT.......having said this,it should show some differences(especially between 1 & 4)and some conclusions can be drawn.And maybe,that conclusion will be that more testing or research needs to be done-who knows? Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 I will try this the opposite way and do the test from the TPS and seal each hole. stay tuned. Quote Link to comment
Sealik Posted November 22, 2011 Report Share Posted November 22, 2011 I don't have to say this is not a realistic way of going about this.BUT.......having said this,it should show some differences(especially between 1 & 4)and some conclusions can be drawn.And maybe,that conclusion will be that more testing or research needs to be done-who knows? Yeah...I hear ya....moar research :D Can't remember what site I was at, but... it was on plenum design. I believe the link was posted by Skib on another Ratsun thread Was rather informative Quote Link to comment
Z-train Posted November 22, 2011 Report Share Posted November 22, 2011 Yeah...I hear ya....moar research :D Can't remember what site I was at, but... it was on plenum design. I believe the link was posted by Skib on another Ratsun thread Was rather informative Well?WTF ya waitin' fer?No such thing as too much info unless you're talking about Rosie O'Donnell. :blink: Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 Ok I ran the test the opposite way with pics take a look. I used a different vac that fit perfect in the ports. #4 #4 sync reading #3 #3 sync reading #2 #2 sync reading #1 #1 sync reading Ok every reading is exactly the same as the the last even with the other vac. I think this is going to work, what do you think? Quote Link to comment
Sealik Posted November 22, 2011 Report Share Posted November 22, 2011 You could probably stick that Unisync or vacuum anywhere on the plenum....results will be the same with only 2 openings. In and out. Vacuum is drawing so much air.....thus the same readings? Quote Link to comment
DATN510 Posted November 22, 2011 Author Report Share Posted November 22, 2011 You could probably stick that Unisync or vacuum anywhere on the plenum....results will be the same with only 2 openings. In and out. Vacuum is drawing so much air.....thus the same readings? Even installing a restrictor to get a lower flow reading? Quote Link to comment
cl72wagon Posted November 22, 2011 Report Share Posted November 22, 2011 Yeah...I hear ya....moar research :D Can't remember what site I was at, but... it was on plenum design. I believe the link was posted by Skib on another Ratsun thread Was rather informative Is this what you are looking for? Its at the bottom of the page http://community.ratsun.net/topic/23128-fuel-injection-on-a-l20-using-mega-squirt/page__st__20 Quote Link to comment
Jester Posted November 23, 2011 Report Share Posted November 23, 2011 Know anyone with a manometer for a 4 cylinder? That way you could get an accurate reading from all four at the same time. Quote Link to comment
DATN510 Posted November 23, 2011 Author Report Share Posted November 23, 2011 Is this what you are looking for? Its at the bottom of the page http://community.ratsun.net/topic/23128-fuel-injection-on-a-l20-using-mega-squirt/page__st__20 Thanks for the thread you posted helped out a lot I'm going with my design but will modify the end a little and round it out some Ill start that when I get back from Oregon. thanks again for all your helps. Happy Thanksgiving. Quote Link to comment
Rustina 510 Posted November 23, 2011 Report Share Posted November 23, 2011 Be sure to have more than 1 of these made. Then sale the extras to fund the entire project, I know more than a few of us want 1 Quote Link to comment
DATN510 Posted November 23, 2011 Author Report Share Posted November 23, 2011 Be sure to have more than 1 of these made. Then sale the extras to fund the entire project, I know more than a few of us want 1 I will.good idea. Quote Link to comment
INDY510 Posted November 24, 2011 Report Share Posted November 24, 2011 Is your biggest clearance problem the brake master cylinder??? ....... . .or will something like this work using aluminum piping?: 1 Quote Link to comment
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