BadAndy
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the Dr Phil of halo
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« on: August 31, 2007, 08:26:41 PM » |
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Got the supercharger back today. Had it rebuilt and upgraded to the curved impeller (said it should add another 1-2psi) also got a UPR boostmaster pipe (another 1-2psi) and a bosch bypass valve. Got everything hooked up and double checked the gap on my plugs, they're at .034 right now. Anyways. Before I sent the supercharger off to get rebuilt it would hit 5 psi at 5k rpms would hold steady when shifting around 5500. Now, even with a new, .5" shorter belt to make it tighter, it hits 5 psi a little before 5k rpms but as it passes 5k it drops off quick. I double, triple and quadruple checked everything!! It's all snug and no gaps anywhere. I also reversed the bypass valve and it does the same thing. This blows  |
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1FastDoc
I was speeding officer?
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« Reply #2 on: September 01, 2007, 07:25:29 AM » |
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Yeah. damn.
I'd come down and help but I've got other plans today and I'd have no idea what I was doing.
Sorry man.
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Yes, I do think I'm above the law.
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Kevins89notch5.0
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« Reply #3 on: September 01, 2007, 07:57:19 AM » |
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Time to upgrade to a vortech. I got one I'll sell ya.  |
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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EVIL5LITER
Action Bastard!
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« Reply #4 on: September 01, 2007, 01:28:07 PM » |
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What blower?
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Steve Sisler
2007 Subaru Impreza WRX
2006 VW Jetta TDI
2006 Suzuki SV650S
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Kevins89notch5.0
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« Reply #5 on: September 01, 2007, 01:46:33 PM » |
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powerdyne |
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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BadAndy
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the Dr Phil of halo
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« Reply #6 on: September 01, 2007, 03:17:09 PM » |
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Paxton SN-92.
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Kevins89notch5.0
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« Reply #7 on: September 01, 2007, 03:22:54 PM » |
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Paxton SN-92.
Ok, I was close enough. |
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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BadAndy
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the Dr Phil of halo
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« Reply #8 on: September 01, 2007, 04:17:32 PM » |
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Yea, no.
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Arrgorndenethor
yo
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« Reply #9 on: September 01, 2007, 08:42:44 PM » |
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is something loose on the internals of the supercharger?
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hrtatack1
no longer the dyno guy :)
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im there.
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« Reply #10 on: September 01, 2007, 08:45:59 PM » |
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do you have msd in that car?
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F*** that, more is better...excess is best...rock the f*** on Just stop typing. Please. For the love of God. Cry me a river. Then build a bridge and get over it.  |
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BadAndy
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the Dr Phil of halo
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« Reply #11 on: September 01, 2007, 09:02:27 PM » |
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is something loose on the internals of the supercharger?
No. Freshly rebuilt and sounds great. do you have msd in that car?
No. It doesn't feel like spark blowout, boost just starts dropping off after 4500 rpms. I'm wondering if the UPR pipe might be the culprit because boost didn't drop off before the pipe. I can't seem to find any rubber caps to close off the pipes on the discharge and intake tubes for the bypass valve but I don't think it's that. |
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Kevins89notch5.0
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« Reply #12 on: September 01, 2007, 09:06:48 PM » |
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What is the boost gauge reading off of?
I ask because I've seen people having their boost gauge reading the pressure of the discharge tube, which isn't correct.
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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big inch
Diesel Dan
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« Reply #13 on: September 01, 2007, 09:24:59 PM » |
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Are you sure the belt isn't slipping?
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Daniel H.
75 F-100 514", C6, yada,yada,yada... new best:10.72@124 :woot:
89 GT roller *now gone*
79 Bronco 351M, C6, stuff... "Where there's a will, there's a trail."
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BadAndy
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the Dr Phil of halo
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« Reply #14 on: September 01, 2007, 11:52:38 PM » |
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What is the boost gauge reading off of?
I ask because I've seen people having their boost gauge reading the pressure of the discharge tube, which isn't correct.
It's on the little log on the firewall that the brake booster connects to. Are you sure the belt isn't slipping?
Two different belts, made both as tight as possible and loosened them up a bit just to see and still the same result. As it climbs to 5psi, it starts dropping off as get above 4500rpms. |
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EVIL5LITER
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« Reply #15 on: September 02, 2007, 09:08:12 AM » |
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In regards to your original question, ("WTF am I doing wrong?!"), you bought a ball bearing supercharger. That's your main problem right there.
Having said that, you are encountering belt slip. Period.
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Steve Sisler
2007 Subaru Impreza WRX
2006 VW Jetta TDI
2006 Suzuki SV650S
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BadAndy
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the Dr Phil of halo
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« Reply #16 on: September 02, 2007, 11:44:08 AM » |
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I don't think I can get the belt any tighter than I already have  |
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1FastDoc
I was speeding officer?
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« Reply #17 on: September 02, 2007, 01:53:13 PM » |
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I don't think I can get the belt any tighter than I already have Sounds like you should have bought a Civic. |
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Yes, I do think I'm above the law.
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Kevins89notch5.0
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« Reply #18 on: September 02, 2007, 01:56:00 PM » |
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What sorta of tensioner do yo have on it? If you don't have one, you NEED one like this...  Even vortech's stock way ot tightening the belt sucks. In regards to your original question, ("WTF am I doing wrong?!"), you bought a ball bearing supercharger. That's your main problem right there. Gotta agree! |
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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BadAndy
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the Dr Phil of halo
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« Reply #19 on: September 02, 2007, 02:47:40 PM » |
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The tensioner is held on by two bolts and the bracket has slits in it for the bracket to slide up and down. I've got it pretty tight right and it still isn't holding boost. I did notice that I when I got it back from being rebuilt that it was easier to turn the pulley than before. Could it be too tight?
I don't need to hear any s*** about my choice in superchargers...it was a good idea at the time but since it needed to be rebuilt way sooner than the guy I bought it from said it should, now it's not turned out to be such a great deal after all. Now I'm stuck with it so I want to make it work as long as possible.
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speedfreak87
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« Reply #20 on: September 03, 2007, 12:57:57 AM » |
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cog drive.
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BadAndy
Mr. Unapproachable
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the Dr Phil of halo
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« Reply #21 on: September 03, 2007, 08:52:14 AM » |
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Wouldn't that be a bit extreme and expensive for only 6-8psi?
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Ralph
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« Reply #22 on: September 03, 2007, 08:57:44 AM » |
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Which brings us back to 'wrong supercharger'.
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Kevins89notch5.0
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« Reply #23 on: September 03, 2007, 08:58:36 AM » |
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but true! |
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** 93 Cobra ** #195, Teal with Black cloth interior, 1 of 185 made ** 89 LX 5.0 ** Currently in hibernation |
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BadAndy
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the Dr Phil of halo
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« Reply #24 on: September 03, 2007, 10:19:04 AM » |
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Very helpful. Thanks.
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BadAndy
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the Dr Phil of halo
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« Reply #25 on: September 03, 2007, 06:53:41 PM » |
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got a reply from the guy that rebuilt the supercharger and he said to send it back to him and he'll set it up differently. what the f*** does that mean?? I get the feeling that means there isn't enough pressure on the ball drive so its slipping internally.
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Ralph
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« Reply #26 on: September 03, 2007, 07:05:28 PM » |
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Which brings us back to 'wrong supercharger'.
 Worst design ever. |
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Arrgorndenethor
yo
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« Reply #27 on: September 03, 2007, 07:09:09 PM » |
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well i know which supercharge to not order when i get to that part after a few repairs
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NUTTSGT
The official
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« Reply #28 on: September 04, 2007, 06:11:32 PM » |
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You need to go fill that blue bottle up.
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Don't race it if you're afraid to break it.
My wife is a Dispatcher, she tells me where to go .....and gets paid for it.
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BadAndy
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« Reply #29 on: September 06, 2007, 03:36:08 PM » |
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Found the problem. Standard type F ATF > Synthetic type F for ball drive superchargers  |
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