I come from CamaroV6 and the only kit out there that is mass produced for our cars is the RKSport Powerdyne Supercharger kit. Well until recently we never knew that there was someone out there getting 13+psi out of a Powerdyne...

http://www.928motorsports.com/services/ventshim.html

http://www.928motorsports.com/services/racerebuild.html

I did a search and did not come up with any results, so I believe this is the first time this forum has heard anything about this. I just wanted to make it aware to you guys that you can infact get more power out of the "crappy powerdynes"...

 

I wonder what his discharge temps are. I havent read the links but anyone can through a pully on any blower and get more boost as long as they dont go past what it's rated for. I was overspining my S-trim and blew the seals out. As long as it's not being overspun and pushed pass it's limits I guess it should be ok barring the discharge temps are good. Correct me if Im wrong but doesnt it get to a point on a powerdyne when even if you up the boost the gains are small to none?

 

interesting

 

ehhh, all sounds good but that kevlar belt can still break pretty easily anyway. Also, just how far is that going to put it out of it's efficiency range? Perhaps the range is now extended but I doubt by much. Max cfm flow capability of the unit probably isn't improved any.

If they could truly address everything it would sound worthwhile.

I still plan to switch to an S-Trim down the road, much less worry about rebuilds and I can use an aftercooler as well.

 

very

 

If it obviously puts out 13 lbs of boost then the CFM has been altered. You aint gettin 13 lbs out of any powerdyne no matter how fast you spin it b4 the bearings nuke. They have addressed that, and a way to keep them a little cooler. Everyone just wants to rag on a powerdyne and its ineffectiveness. You get what you pay for. Not everyone wants to put out 20 lbs of boost. Not everyone is creating a 1/4 mile car that needs to hit max boost of 30 lbs from x RPM to y RPM yada yada. Its a cheap blower, meant for smaller gains for those who dont want to take that big plunge into a procharger and bulletproof bottom end. It is what it is, since when has the ideal of going as fast as you can for as cheap as possible gone out. Since when do we criticize people trying to make an "inferior" product better so you can get more bang for your buck and not go broke getting it. You people must all have bottomless pockets. I wish I had that problem. My boss is a dealer for procharger and can get me a D1 kit for cheap and ive thought about it but im going to put my $$ in the bottom end now because I already own a Powerdyne thats been sitting collecting dust. Now I am compelled to finish the engine with intentions of upgrading the SC but I am going to put this PD to the test and see what i can get out of it. For what they want to charge for this upgrade, it just seems stupid to NOT try it.Ill let you know either way how it works out for me, but I have to put this b!tch to the test now. By my math, with better bearings that could withstand 45k rpm you could push a 2.4:1 ratio pulley (roughly like 2.5" with a 6" crank)and probably see about 10 lbs and never spin the engine much higher than 6K. At that level, the SC should last and would give quite a kick for the money invested. No IC needed, go meth injection and yer done. A solid 450 +RWHP with all the associated upgrades that go along with any other SC install like fuel system and tuning. Its all in HOW you build it. If it dont work out, ill let you know how far I pushed it b4 it popped. Unfortunately they require regular maintenance, but I do almost all my own work anyways.

 

Honestly I didn't spend a lot of time looking it over, but I didn't see anything that said it made 13 PSI ...even if it did, 13 PSI on what? Boost is really a measure of restriction so it really depends on what it was. I don't doubt it can do it on built motors like most of ours with that upgrade, but as someone else stated ....what about the temps? I don't want to use water injection or other, to each their own. Also, I hope you're ready to fork out $$$ for a custom 8-rib pulley setup, as that is the only way you won't have severe belt slip (especially with your 2.5" blower and 6" crank pulley combo idea ....you're better off with a 7" crank and say ...the stock 6 PSI kit's 2.93" blower, you need contact area to reduce belt slip), and you'll be adjusting the tensioner rather frequently especially during belt break-in (ask me how I know). I just have doubts about an "upgrade kit" that can only address so many things that's all. I know of some who've used the stronger Kevlar belt (albeit it may not be the "GT" version if that's any different which I doubt) and break it fairly easily at a lower rpm than you'd see. You speak of saving money, if I had it to do over again I would have bought a used Vortech instead of a new Powerdyne. I've recently pulled my PD off for a rebuild. I know a few who've rebuilt theirs more than once. I'm not bashing it, it does what it's suppossed to do fairly well. Like you say, it's not intended for super high HP goals. The problem is most of us wind up wanting more later on, even though we swore up and down we'd never need more than ~350-450rwhp (btw, 450 rwhp is attainable with the PD without this "upgrade" if the cam/heads/bottom are done properly just by overspinning it to get ~6 PSI on a built 355 for example. To me it's not worth the effort, doesn't mean I'm right or you're wrong ....just my preference. For the cost of upgrades and rebuilds I could buy a used S-Trim or ProCharger used and sell this PD ...not that there's any guarantee the Vortech or ProCharger's going to be trouble free. My guess is that even with this rebuild if the PD is really pullied up to a relatively high PSI on a built motor, this upgrade will be close to the limit in terms of what it can really take. You have to look at the whole picture (like addressing belt slip for example) before you rush into this, but hey, go for it ....if someone else can do it successfully maybe I'll be more inclined to keep mine since I have a modest power goal of ~525 rwhp or so from the 9 PSI intercooled boost I'd like to run someday. You see, that's really a big part of the problem for me though ....I want to be able to run ~9 PSI whenever and however I want, I don't want to fool with meth/water/other injection. Also, there are certain quality issues in general I've been less than happy with (poor fitment of up-pipe to discharge tube, lack of spring loaded tensioner, etc) that generally aren't an issue with Vortech from what I hear. To each their own man, chill ...and good luck.

 

i dont really see the whole point of upgrading anyway though, for 1500 you can pick up an XB-1A and push 18lbs easily, im debating getting one and pullying it down to 6psi for more low end than the lil one ive got. plus its got the gear driven whine i love. only have to tap the pan and run oil cooler lines, which is easy

 

Are you in an F-body or something else? I didn't think that was available .... ??? I guess you could fab up brackets?

 

yeah as far as the 8 rib setup and the tensioner.....I will probably put a spring loaded tensioner on there along with a custom 8 rib setup. The trans. shop i work at has CNC equip. and ive already been told it can be done (meaning if I ask nicely they'll help hook me up). As for the other 6 rib stuff, I bought it cheap, i can get rid of it all im sure. They build 7 sec. 1320 cars so i dont think my measly 500 rwhp car will be a problem. Thanks for the input though. Ill let you know how it all works out. They want me to just jump into a D1 kit but now im adamite about putting this PD to the test. The engine will be built to take more than the PD can put out so when its time to upgrade I can just slap the D1 on. Oh, and I already own the powerdyne so no harm in tryin'.
On a side note, I drove a fox body with a D1 today. Boy was that a blast. could light em up from any gear any speed, at least up to 70 anyways. That was sportin ET Streets too. Fun car. No damn boost gauge in it yet though. Its a project in the making. I love my job.