Nothing?

I´ve sent pm and email...

Well, still interested in the kit...

 

make sure you sent the email to : info@a-spectuning.com i know Seans PM box is always full.

 

Mailed Mike.... Now i´m just waiting for the stuff :-D

 

So what CFM can you expect to see at the turbo at 15psi on the 500R?

 

zero do you feel that this turbo is undersized for a half bridge? currently i have a 42r, but it seems to finish this setup i will never have the money to complete it. atleast not as soon as i want it be. i already have the half bridge engine so i dont want to let it go. or do have any ideas, im currently trying to sell the turbo but im not having much luck!

 

Not quite sure what you mean?

 

I would say it is a bit too small yes, but that is my opinion. Some guys are running what I would say are smallish turbo's on HBP's so I wouldn't say it's impossible just not ideal.

-S-

 

Okay, then at what lbs/min does the 500R provide at 15 psi and 7000 rpm?

 

The turbo itself cannot provide any lbs/min per say. It will depend on the motor, along with displacement, and other variables such as load. The turbo is able to support up to 73-74lbs/min.
At 15psi and 7k rpm you would plot out at roughly 41lbs min conservatively. That puts you in the 76-77% eff range. Hope that helps.

-S-

 

PM sent.

 

That helps greatly thank you, I'm trying to size my custom IC setup accordingly, so when it's time to order the 500R I will have a supporting system that adequate.

 

How is the IC setup? I would run a 3.5(thick)x12(height)x18(length) 41lbs is roughly 585cfm. That core I just listed will flow 635cfm which is slightly more than your wanting at your 7k mark. And slightly less than you'll be needing at your redline(roughly 700cfm) Going longer will only hurt CFM on the core at expense of slightly better cooling and will induce a bit more lag. You want to find a happy medium of sorts. Good flow and good heat rejection.

-S-

 

Actually I went with a Spearco bar & plate unit, 3.0T X 7.125H X 18.5L at a CFM of 670. I'm doing a properly vented v-mount so thermal efficiency should be slightly better than a front mount. A little undersized compared with what you recommend, but I think it will work. If not I have room for a slightly larger unit.

 

Ok personally it looks like your doing a great job of planning it out, thinking it through and such and the end tanks look very good Fantastic even. Did you bellmouth the charge side inlets as well? Here is the issues I see. That core will not flow those numbers (I don't think) they way you intend it to. Here is why I say that. The core I mentioned is rated at low boost pressures. Meaning that it will flow those numbers at low or moderate boost and pressure loss levels. The core you have seems to be rated at a higher boost level. So higher boost level means higher pressure loss but also a higher flow rate. What does that mean to you and why is that important? Well it means that on the core suggested you have room to grow and it may even flow a bit better than the numbers I have given if you turn the boost up. In my opinion on the core you have the flow numbers are closer to max already and you may find it not up to the task, once (if) you turn the boost up past your present target. Keep in mind I'm not saying it will run hotter, that is a given regardless once you raise the pressure. I'm saying it will become a flow restriction causing less power and more lag, making your turbo work harder than you would like. Hope that helps.

-S-

 

Sean.. I am currently running a frontmount that is 560 cfm (3.5x20x8 core) w/ the stock twins( FD). I should be ok on 15 psi w/ 500r set-up for street driving (intermittent WOT pulls)? From what you are describing. I would need to go bigger for occasional 20 psi and w/ race gas ( high boost) correct? Obviously there is no 1 intercooler that will be most efficient for running various bost levels. Just would have to go w/1 w/ CFM slightly larger than the highest boost(flow rate compensation) you plan to use. Just bite the bullet on the inefficient drop and lag that the lower boost rates will produce. Right? Thanks Garret

 

You definitely have a good point. I plan on doing some before/after temp/boost eval with the twin setup at 17psi to see if I will have issues, granted the flow is nowhere near the 500R, but hot side temp and pressure should give me some idea. Thanks Sean.

Finished it last night, need to tie it all down now. I have room for a 4X9X20 if I need to upgrade when I go 500R.

Peace

 

The thing I try and do, is keep core length to 18" or less for good flow. Once you step up it higher it start to favor cooling more over flow. Not that cooling is a bad thing, but what I'm saying is that increases in length up till that point dont seem to have as negative a impact on flow. That is usually because the cores offered by most jump up to 24" at that point. Think about it most heat transfer is happening at the inlet side of the core. The longer you make the core the less return you will get for your length all while adding more pressure loss. The longer the tube the more the drag. I would try and size the core where you use it most. then lean slightly over that. A good example would be what I quoted above. It was slightly over the maximum flow but more than enough for the lower flow levels. This will give less lag. But still offer very good cooling. Also the core I mentioned was tested at lower boost levels. That means that it will still flow more than those numbers I provided if you turn it up. Any time you see a smaller core with higher CFM numbers chances are they turned the boost up to get the numbers, which means that core will tend to be undersized.

-S-

 

Hey. I tried calling but keep getting voice mail. I want to order up this kit today.

 

Sean, I am about ready to take this plunge as well. What is wait time on this kit?

 

Some vids of my 500R in action, for those who haven't seen them. This was running off the 11.6 psi wg spring, creeping to 14 psi. You need to click 'windows media player' to get sound .

http://videos.streetfire.net/search/500R/0.htm

 

damn thats a main road to be floating thru 3 gears on.

anways looking good man.

 

I do that all the time. Between my Valentine 1 and my military ID card, I've had pretty good results the last 8 years

 

^^^HAHAHAHAHAAA!!!!!! buddy of mine pulls that crap everytime he gets pulled over. He "accidentally" hands the officer his military ID instead of his drivers license.

On another note....
Yea!!!!!!! I ordered my 500r kit..... yea!!!!!

 

What are the effects of switching from 1.06 A/R to .85 A/R? I understand the power curve shifts but what is the result of that? Does the power with 1.06 continue past 9k rpm or does it plateau at 7k or possible even drop and loose power after 7k rpm. ...same question for .86 A/R, does it peak earlier and hold or drop off sooner and is overall total HP lost @ 10lbs, @15lbs? Would using 3.5" instead of 3" down pipe back piping offset the pressure increase of the smaller turbine snail?

 

Hey Rich, have you run Ihor with the 500r yet??? how does it feel compared to the last set up you had?