Vortech S/C Question
Does anybody know were I can get bearings for it?
Does this mean that I could safely get away with an 11psi pulley and probably bring my boost back into 9psi? I know the 11psi pulley is the smallest you can go (2.75in) without exceeding the max impeller speed.
I am considering this but I just dont want to push the envelope and be lifting heads and have to use race gas everywhere. Right now the motor feels solid as I pound it all the time with not so much as a whimper.
I don't think you will be lifting heads because of the higher boost level. You will lift heads and break pistons when you detonate from running lean. After installing the smaller pulley I was running very lean. 14.2:1. I did the above damage after installing the pulley. After you put the pulley on dyno with a wide band air fuel meter and only take it up to about 5k rpms.
<small>[ November 11, 2002, 08:24 PM: Message edited by: 30thta436 ]</small>
[QB]
Does this mean that I could safely get away with an 11psi pulley and probably bring my boost back into 9psi? I know the 11psi pulley is the smallest you can go (2.75in) without exceeding the max impeller speed.
[QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Why would you exceed impellar speed with a 2.75 pulley? I am running a 2.65 pulley and my max impellar speed is:64573.58 shifting at 6200rpm. I also have been running a 2.75 pulley for a while and no problems(knock on wood). Also with the 2.75 pulley I was only seeing a little under 10psi at 6200 rpm.
I guess out of frustration he ditched that set up and bought a cast iron 6.0 block (LQ4. And was running a 200 shot before he left to Ohio a while back.
Ill try the 2.75 pulley, right now I have 42# injectors, a 225lph pump, and the T Rex and stock pump. Is this adequate for 2-3 more psi?
I plan on getting a LS6 intake and tuning with LS1 edit too.
BTW, whats the power threshold of the T56? Will this push it over the edge? Right now I have 500rwhp,445rwtq and it is holding...
Just watch your air/fuel ratio when you put on the smaller pulley. dyno it with an air fuel meter to make sure you are not to lean before you run it ***** to the wall.
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<strong>do you guy have any engine problem like head gaskets,piston or any thing else.I've bin thinging about a vortech 9lb system for sometime now and i don't want any engine touble right away.thank for any info.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The one time that i damaged pistons and lifted heads was because I was running lean and detonating. Detonation causes extreme pressures to be put on pistons and head bolts. Just make sure your air/fuel ratio stays around 12:1 and you will be fine.
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<strong>My S/c belt jumped in the rain the other day and it sliced the belt. Some of the belt got wrapped under and behind S/C pulley. I got all of the belt out, but now I got a bearing whine. I'm sure I can pull it apart and fix it, If I can the bearings.
Does anybody know were I can get bearings for it?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">A quick question? What does bearing whine sound like?
Jason <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<strong>It sounds like a high pitched whine, like a bad alternator bearing. GM owners should be very familiar with that noise. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> . You can here it in the air filter housing real good.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I sometimes get a "howling" sound coming from underneath my hood. Could that be bearings? I hope not...I thought bearings sounded like marbles.
Thanks Jason
<strong>It sounds nothing like marbles. You could describe it as a howling. Stick your ear in front of your air filter box at the inlet. If it is whining you will now it. You will hear air rushing.But a bad bearing noise would be very noticable.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I was afraid of that. It sounds like my bearings are on their way out. It it safe to run the car for now? Or should I get them fixed ASAP?
Jason
If it is the bearings.
Vortech quoted me $670 for them to replace the bearings and seals. I'm trying to find the bearings so I can fix it myself. I think I will be getting them from Turbo Technology here in OKC. Hopefully I will know on Monday.
<strong>If the bearings are just noise now, you will just need bearings. If the bearings fail and the shaft is able to move, then the blade will hit the housing. Then you will have some serious problems. If you are having bearing noise then you should stop driving it and get it fixed.
Vortech quoted me $670 for them to replace the bearings and seals. I'm trying to find the bearings so I can fix it myself. I think I will be getting them from Turbo Technology here in OKC. Hopefully I will know on Monday.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How hard is it to change the bearings? I know to turn a wrench, but it would be a little scary taking that blower apart. If you would not mind, when you find out on monday, let me know. I might order the bearings as well and give it a shot. Too bad I don't have video phone.
I might just have to take a road trip to Vortech. What sucks about driving there, it would be nice if they could look at it right away. Instead, the last tiem I went up there, it took them 3 weeks from when I dropped it off.
<small>[ November 16, 2002, 11:16 AM: Message edited by: superchargedZ ]</small>
Hey when you pay 5k+ for a supercharger they better be ready to have some excellent customer support. I wouldnt feel bad at all if I got Vortech to replace the bearings for free. Especially if they quoted you guys $670. to replace some bearings. Thats pretty steep for some bearings.
I still want to run the 11 psi pulley, why did Vortech charge us 5k+ and give us a G trim? You know what other applications the G trim is used in? From what I hear the Honda Civic! Thats right same head unit.
They should give us the T trim for free. I already am rubbing my hood though, but I remember reading in a Pontiac mag a while back how someone was running the T trim and it wasnt sticking through his hood.


