vdrumright Posted October 26, 2004 Report Share Posted October 26, 2004 Today I removed the Powerdyne sc from my SS. I am boxing it up and sending it back for a refund. It was a nice looking kit It was easy to install.. But is was incapable of building any more than 4psi boost. Even with a 12 psi pulley. Aparrently, Powerdyne didn't know there was a difference between a LQ4 6.0 and a LQ9 6.0. and the requirements our engines need to build boost. They will not be recomending this kit for SS's any longer. To all the " I told you so's" ......you were right..... There I said it...I'm glad it's over with.....lol As soon as I get the refund there is a radix kit on the way........I found a guy on Ls1tech that was selling one. It also have the lager hear exchanger that mounts in our lower grill opening..... If powerdyne doesn't jack me around on the refund I should have it by the middle of next week. I will have a almost brand new set of multec II injectors for sale if anyone is interested. Vince Link to comment Share on other sites More sharing options...
rdss Posted October 26, 2004 Report Share Posted October 26, 2004 Sorry to hear about that Vince. I know you where proud of that kit, atleast the looks. Hope you have better luck with the Radix. Link to comment Share on other sites More sharing options...
rdss Posted October 26, 2004 Report Share Posted October 26, 2004 By the way, congrats on making it to the elite membership! Link to comment Share on other sites More sharing options...
Dylan06SS Posted October 26, 2004 Report Share Posted October 26, 2004 Sorry to hear that vince... I know you had a lot of blood, sweat, tears, and time invested into making that thing work. Its a shame, but at least you've done the research for us and we all know not to bother w/ powerdyne! Link to comment Share on other sites More sharing options...
m396 #00-011 Posted October 26, 2004 Report Share Posted October 26, 2004 , but it's for the better. You'll love the Radix. Link to comment Share on other sites More sharing options...
vdrumright Posted October 26, 2004 Author Report Share Posted October 26, 2004 Live and learn I guess.. I wonder what kind of real numbers that wynjammer kit is producing. I found this to be kinda interesting. This is from their website: #11Boost Gage. When purchasing buy one that has a wide sweep for easy read. Hook gage to the pressure duct not the manifold. If you should hook to manifold you will see boost only in the higher RPM range. Seems like an odd place for the boost gauge pickup. Link to comment Share on other sites More sharing options...
ctrow Posted October 26, 2004 Report Share Posted October 26, 2004 Assuming the only difference between the two are CR/pistons, why would the kit not build boost? Isn't the boost taken from the intake manifold before entering the combustion chamber? Either way, you're getting a proven performer with the RADIX. Just a little confused what the difference between the LQ4 and LQ9 has to do with the SC building boost. Link to comment Share on other sites More sharing options...
vdrumright Posted October 26, 2004 Author Report Share Posted October 26, 2004 Assuming the only difference between the two are CR/pistons, why would the kit not build boost? Isn't the boost taken from the intake manifold before entering the combustion chamber? Either way, you're getting a proven performer with the RADIX. Just a little confused what the difference between the LQ4 and LQ9 has to do with the SC building boost. <{POST_SNAPBACK}> Youre not the only one confused. That why I'm sending their kit back.The salesman I was dealing with has a lq4 and said he see's 6psi boost with a 8psi pulley. I tried all their pulleys 6 -8 - & 12. 6= no boost. 8 = 2-3 psai boost, 12=4psi boost. As well as 2 different hear units and different blow off valves. Link to comment Share on other sites More sharing options...
zippy Posted October 26, 2004 Report Share Posted October 26, 2004 Assuming the only difference between the two are CR/pistons, why would the kit not build boost? Isn't the boost taken from the intake manifold before entering the combustion chamber? Either way, you're getting a proven performer with the RADIX. Just a little confused what the difference between the LQ4 and LQ9 has to do with the SC building boost. the LQ9 is a bit higher output engine and requires more air to make the same amount of boost. it's probably a bit light on the LQ4 also. the fix for powerdyne would be to make the xb-1a their SS blower, but they are going to have to work on that for a while to get it right first. the radix will be a nice proven kit. as long as your refund goes well you really aren't out much and have since learned some about blowers and how they work. still waiting to hear more on that winjammers.... Link to comment Share on other sites More sharing options...
SuperSport Posted October 26, 2004 Report Share Posted October 26, 2004 Vince, now all you have to do is pick which FI you want to go for next. Link to comment Share on other sites More sharing options...
BenKey Posted October 26, 2004 Report Share Posted October 26, 2004 Sorry to hear Vince. Radix is an awesome kit. A lot of parts to the system though, as I know you are aware. Make sure you get them all. Magna charges an arm and a leg for their pieces/parts. Link to comment Share on other sites More sharing options...
ctrow Posted October 26, 2004 Report Share Posted October 26, 2004 the LQ9 is a bit higher output engine and requires more air to make the same amount of boost. it's probably a bit light on the LQ4 also. So basically the supercharger they send is too small for the CID of our motors and therefore cant force enough air to fill the motor and build boost? Link to comment Share on other sites More sharing options...
haynss Posted October 26, 2004 Report Share Posted October 26, 2004 next time you'll listen Link to comment Share on other sites More sharing options...
rdss Posted October 26, 2004 Report Share Posted October 26, 2004 You didnt tell him to not get the Powerdyne!!! If I remeber correctly, you said "DO IT.....DO IT!!!" Link to comment Share on other sites More sharing options...
AWDGM Posted October 26, 2004 Report Share Posted October 26, 2004 The LQ9 and LQ4 will have exactly the same manifold boost pressure. If the blower only made 4 lbs of boost on the LQ9, it would make exactly the same 4 lbs of boost on the LQ4. Cubic inch/air flow is the same on both engines. Cylinder pressure would be higher on the LQ9 though due to the higher compression ratio. They both take in the same CFM of air, the LQ9 just compresses it more. I would guess the clearances were excessive on that Powerdyne, limiting boost. Butch 02 Sierra Denali Link to comment Share on other sites More sharing options...
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