I have been a very big radix supporter and have gone on and on about how great I feel the kit is. BUT parish does have a strong point, at "some point" the will reach its limit. And i also agree that it isnt the best thing to have if you want true, big power. With that said it is a very good thing to have to make lots of good, strong power for the street and strip. I would feel safe to say that with the right engine combo and tune that a radix setup can make 600rwhp. But take that same setup and put on say a F-1 ProCharger or a YS Vortech blower then you could be making 700+rwph. Its all in what you personally like. Thats just my .02.

 

Haven't read anything new.
Why not then. There's enough Radix Bro's around to talk this through.

We have to talk apples to apples. So let's say, Pump gas and AT, no Nitrous.
This is what I've gathered:

Radix will live to 18,000rpm, reliably (what's the cfm conversion on that?)
The Radix at some point will reach diminishing returns, but at what point?, and what can be done to extend that point?


hmm, what else

 

well, someone has to quantify big power for me.

let's take parish's truck as an example. Lets give him 650rwhp. Now, is this a streetable setup? From what I can see, no. Why, race gas is the main reason, no A/C, no rear bumper, etc, is it reliable?. just not practical IMO. Is 650rwhp considered Big HP? I don't know, you tell me.

We are talking street trucks, yes? Pump gas I'd imagine?

where do we draw the line?

seems like BigHP! might be just what a Radix is capable of

 

I saw a post somewhere on a 03 cobra forum about finally breaking the 600rwhp mark with the stock Eaton. That would probably be 550+ through an auto. I searched and can't find it again.

IMO it's possible, but it's stupid to use a small overspun blower to do it.

If someone put a radix on top of a 1000 hp NA engine, and it managed to suck 700 hp worth of air through the radix's rotors, That doesn't mean a radix is good to 700 hp.

I don't know why everyone gets defensive about the capability of this blower. 500 rwhp is sweet, but the 112 is just out of steam at that point. I think if magnacharger would come out with a bigger headunit, then everyone would suddenly accept the fact that the 112 is pretty much done at 500.

 

I disagree here. I would like to discuss, technically, the likely limits of the MP112. Your analogy is interesting, but can we talk in terms of reality as much as possible? Like can a Radix support 600rwhp, if yes, how? data to follow. If no, why? data to follow. Or I think the Radix will top off at X rwhp because of the following Data.
I like stories too..........but I like facts even better.

 

This guy(Superfords) has a heads and cam built motor(5.4) with a ported eaton. He did 541hp. This is the highest I've seen in the L community.

I think L's are the best guage of what the 112 can do. They've been out for a while, and the guys have been pushing them to their limit for a while now. If the 112 was capable of 700, I think they'd be there. 600 I think they'd be there. They have great flowing 5.4's into the mid 500's. Who knows what more cubes would do. I say you could get close to 600, but again, that wouldn't be practical. I think anything over 500, and you're working way too hard for your horsepower.
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Originally posted by LightningTuner
Superfords ready to lay it down!!
As many of you know, Chris (superfords) drove up from Virginia Friday night for a Saturday dyno session here at PSP. Chris is a great guy, and his truck is just awesome. Gotta love the sonic blue as well. Anyway, I'd like to think we made some great progess on his tuning. We did him a pump gas street tune, a 100 octane race tune, and a 150 shot nitrous tune. Here's the results..

Street tune - 525hp 597tq SAE with mid 11s A/F

Race tune - 541hp 606tq SAE with 12.0 A/F

Nitrous tune - 669hp 834tq SAE with low 11s A/F

And for those of you into STD numbers

Street - 539/613

Race - 555/622

Nitrous - 687/856

Chris' truck is making some power baby! Don't forget that this is a mild combo too. Extrude honed heads (not CNC ported), stage 2 cams, ported Eaton seeing about 16-18 psi if I recall correctly. The nitrous was using a 150 NX shot at 1050 bottle pressure.

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I have heard from quite a few people that the cobras have composite rotors that are much lighter, and I think that allow them to run a bit cooler, and probably spin a bit faster safely than your normal m112. That would at least account for the reason that someone might have possibly hit 600rwhp with a manual Cobra.

 

Just be real careful when comparing a car (any car) to a truck in terms of RWHP... An F-body with it's slightly larger motor will make 80-100rwhp more than a similarly setup 5.3L truck. With boost it's even worse depending on static compression and such. There are just too many variables unless you are comparing 2 identical vehicles.

 

Any limit can be found pretty darn close to exact with math. That would be engine dyno (fwhp) most easily.

back on topic: 500 is impressive. I'm done

 

here are the specs, you do the math then deduct for driveline losses and compreser drive losses. http://www.magnusonproducts.com/radix.htm , i got to go to work but i have done the math before and posted on it before. when i get home i will find the link to that old thread.

the compresor charts tell the story. people pop in here and say sure it make 450rwhp on a 4.8 so it can make 600 on a 408 but it just doesn't work that way. check them out. prety interesting