Rotrex Supercharger?

[locrwln1]

With all of the talk about the Toyota SC and Turbo's for the 80's, has anyone looked at the Rotrex Supercharger? It's a belt driven item, but is supposed to have "lag free boost with claimed efficiency of a turbocharger." I read an article where they put two of the chargers on a 6.0 gm v8, running at 20psi and produced 928hp@5900rpm and 829lb-ft @ 5700rpm. The ratio ranges from about 7.5:1 to more than 12.5:1 depending on the model. They go on to say that the due to the gearing style, which is different than the typical belt driven supercharger, is capable of spinning the impeller up to speeds of 90,000-125,000 rpm range. The impeller speeds produce adiabatic efficency levels similar to an exhaust driven turbocharger. The web site is www.rotrex.com. Sorry I don't have the link. What think you?

Jack

 

[LandCrusher'70]

http://www.rotrex.com/pdfs/Rotrex_Technical_Datasheet_C30_Range_V1.6.pdf

 

[clownmidget]

These are what URD has in their kits. Pretty good numbers...

 

[Walking Eagle]

The no lag is cause it's belt driven.

The efficiency is close to a turbo cause it basically is half a turbo. It's the compressor side of a turbo, driven by a belt, rather than by exhaust.

 

[LandCrusher'70]

These are what URD has in their kits. Pretty good numbers...

Wow. $4,700 for an FJC kit!

 

[wileetoyote]

I read and article that the 2007 Ford Cobra (GT500) considered the Rotrex but had to go to the Roots because of volume related issues with Rotrex. Says a lot for their product in any case.

WET

 

[locrwln1]

Wow. $4,700 for an FJC kit!

Ok, we need someone that is close to them, to go and see what they could come up with for the 80's and see if it would be worth both our time. I would like to see what numbers they could come up with for the 4.5l. It would be really nice if the price was around the 4k mark or less .

Jack

 

[locrwln1]

Wow in the neverending quest for more power for the 80, that was a short discussion.

Jack

 

[clownmidget]

How many 1FZ-FE engines do you think are in North America?

 

[alkaline747trio]

Wonder if the power steering pump on my 3FE could be moved to the opposite side to make the plumbing of this easier.

 

[alia176]

They recommend the C30-94 ($1,900 retail) for our engine; should produce about 8 psi or so...general calculation.

 

[locrwln1]

They recommend the C30-94 ($1,900 retail) for our engine; should produce about 8 psi or so...general calculation.

Is that just for the compressor? If so, I wonder how much more you would have to source on your own?

Ok, Ali get rid of the York and get busy. Then I can just copy.

Jack

 

[locrwln1]

How many 1FZ-FE engines do you think are in North America?

Apparently enough for this little board to talk about and Slee and MAYBE MAF to be building/planning turbo kits. And for there to be a very lively chat on power adders about every other week. Also I believe you have experienced all three versions...stock, SC and now turbo. Wouldn't another choice be nice?

Jack

 

[clownmidget]

Yeah, I'm just busting balls. The truth is a bit painful when owning an 80 though. No one in their right mind would think they could make money by developing and trying to market specific engine mods for the 1FZ-FE. No one wanted to buy the Safari turbo when it was brand new and the trucks were only a couple of years old with under 50K miles and it was just around $5K. Not many people bought the Kazuma/TRD supercharger and it has been sold as low as $2K by Toyota. Christo has put a lot of $$$ and time into the AVO and it is still nearly $8-9K and he's not even making much on them. MAF will probably have to sell theirs at more than $6K just to break even. Who is really going to do that? Some of these 93-95 trucks are that much...passion only goes so far before hard business decisions have to get made.

 

[locrwln1]

Yeah, I'm just busting balls. The truth is a bit painful when owning an 80 though. No one in their right mind would think they could make money by developing and trying to market specific engine mods for the 1FZ-FE. No one wanted to buy the Safari turbo when it was brand new and the trucks were only a couple of years old with under 50K miles and it was just around $5K. Not many people bought the Kazuma/TRD supercharger and it has been sold as low as $2K by Toyota. Christo has put a lot of $$$ and time into the AVO and it is still nearly $8-9K and he's not even making much on them. MAF will probably have to sell theirs at more than $6K just to break even. Who is really going to do that? Some of these 93-95 trucks are that much...passion only goes so far before hard business decisions have to get made.

I agree, but with people buying the ebay turbo manifold and starting to source their own turbo system, this seems like it might be a viable alternative. I'm not even sure I would expect URD or anyone else to market a "full on kit", however; in a build your own, it might be worth it. The question is how much more would it take to finish the install? If you buy the compressor, do you need to add more fuel, programming, intercoolers...That would be an interesting experiment along with real world results. I think the problem, like you, is how much money do you throw at a 10-15 year old vehicle?

After doing the HG, valve job, injector and cleaning up everything while it was apart, mine is running very well and I'm happy with the power (for now). When/if the armor gets added, then maybe not so happy.

Jack

 

[Waggoner5]

Yeah, I'm just busting balls. The truth is a bit painful when owning an 80 though. No one in their right mind would think they could make money by developing and trying to market specific engine mods for the 1FZ-FE. No one wanted to buy the Safari turbo when it was brand new and the trucks were only a couple of years old with under 50K miles and it was just around $5K. Not many people bought the Kazuma/TRD supercharger and it has been sold as low as $2K by Toyota. Christo has put a lot of $$$ and time into the AVO and it is still nearly $8-9K and he's not even making much on them. MAF will probably have to sell theirs at more than $6K just to break even. Who is really going to do that? Some of these 93-95 trucks are that much...passion only goes so far before hard business decisions have to get made.

Good point, everyone can agree that a stock 97 80 series runs pretty good for 212 hp. The turbos, SCs and others will just barely get the power back once you load up the truck for serious offroad adventure.

 

[alia176]

Gary,

How about you install one of these things in the FJ125? I know you don't need the power but you're probably bored right now so.... ;p

 

[Waggoner5]

Blew all my money going to SEMA with you guys sorry.

 

[inacoma]

They recommend the C30-94 ($1,900 retail) for our engine; should produce about 8 psi or so...general calculation.

wonder where you got that quote from

later,

k

 

[sseaman]

i dont know much about superchargers but this looks like a possible solutions to the lack of power in the 3fe