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Help with custom rear mount

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Old Mar 18, 2009 | 06:47 PM
  #61  
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It will hurt power, but not enough to notice. Keep the build going man!
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Old Mar 18, 2009 | 09:46 PM
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Thanks for looking, I think I am going to get them, just for insurance reasons and i'll already be there.

I need to know about cams, whats a good turbo cam. I know it dont usually go together but is there any that have some lope that will also work well?
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Old Mar 18, 2009 | 09:59 PM
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did you ever get your oil return problem fixed. when you were drainng back into turbo over night.
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Old Mar 18, 2009 | 10:03 PM
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I should have fleshed that out a bit. Hurting N/A power will of course equate to lower power when you are boosted. But it won't be enough to notice, and the lower compression, even if it is a half a point, will be worth it.

If you are looking for a cheap drop in cam the Z06 one is popular, otherwise I think a custom spec'd one is a good investment for $200 more.
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Old Mar 18, 2009 | 10:15 PM
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Originally Posted by JAX04
did you ever get your oil return problem fixed. when you were drainng back into turbo over night.

Yes, I had to put a check valve in the return oil line, I still have a problem with it smoking some but I am going to shirk up the feed line and see if that helps then to restrictions.
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Old Mar 18, 2009 | 10:49 PM
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Go with the restrictors..... I had oil in my pipes and issues surrounding it for a while, installed an inline restrictor and all those issues went away.
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Old Mar 19, 2009 | 06:58 AM
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if u decide on a z06 cam like i did, be sure it is '02 or higher for the better performance
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Old Mar 19, 2009 | 07:26 PM
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Originally Posted by Zombie
You couldn't pick a worse performing exhaust setup LOL

Hahahahah yea... And I think 65lb injectors are too small for that 76.
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Old Mar 19, 2009 | 07:34 PM
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I think the turbo will max out before the injectors. People have pushed 800 with 60's.
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Old Mar 19, 2009 | 07:40 PM
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I think I will need a new fuel system before injectors, but I am only going to run a MAX of 12lbs, I am on stock bottom end and I intend to only run about 8psi although I want to see 500 =, But thanks for the heads up and advise I need all I can get!
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Old Mar 19, 2009 | 07:42 PM
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What combo were you at to make 506? injector size heads cam? boost level etc?

Originally Posted by longrange4u
Hahahahah yea... And I think 65lb injectors are too small for that 76.
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Old Apr 1, 2009 | 03:09 PM
  #72  
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Update, Bought Yellow Springs, 02 Z06 cam, Comp Cams Pushrods 7.425 I think, Meth injection instead of the 317's, Still need a 2 or 3 bar map.
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Old Apr 2, 2009 | 12:50 AM
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Originally Posted by Super Slow SS
What combo were you at to make 506? injector size heads cam? boost level etc?
Oh I pushed my 42lb injectors to 110% duty cycle for 607RWHP... But could run with a decent A/F 535RWHP. I thought you were going for 800? If your shooting for 600 you should be fine with 60's.
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Old Apr 2, 2009 | 10:04 PM
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Originally Posted by jeffboy757
there a little place you tap into right above the oil filter for your oil supply, then you run a 4an line to the turbo (same as a nitrous line) then make sure you use a restrictor of some kind to limit the amount of oil going into the turbo (you can use a nitrous jet) then you need an electric oil pump to pump the oil back to the car, you can run it back in through the valve cover, or tap into the oil pan.. i did all this for my sts setup up.. btw i think engine gear was who makes the pump.. sts dosent make their own they just put a sticker on someone elses product
Man to hell with that restrictor. I just trashed a new turbo becuse I used the restrictor. I used the one that many people here on this board suggested. The STS WASNT engineered to use the restrictor, call Chris from STS , he'll tell ya the same...
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Old Apr 2, 2009 | 11:14 PM
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Originally Posted by charlie c5
Man to hell with that restrictor. I just trashed a new turbo becuse I used the restrictor. I used the one that many people here on this board suggested. The STS WASNT engineered to use the restrictor, call Chris from STS , he'll tell ya the same...
That might be the case with the supplied turbo from sts, but when you put a diff turbo you might run into this. I had the 67mm turbo from sts and it wrked fine the way it was, but when I upgraded to a 76mm I needed to restrict the oil more because I was getting lots oil in my pipes. Once I did that no problems. This is on a single turbo system as well witch needs less oil flow than the corvette twin system. Just my .02
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Old Apr 3, 2009 | 02:31 AM
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Originally Posted by Silver_TransAm
That might be the case with the supplied turbo from sts, but when you put a diff turbo you might run into this. I had the 67mm turbo from sts and it wrked fine the way it was, but when I upgraded to a 76mm I needed to restrict the oil more because I was getting lots oil in my pipes. Once I did that no problems. This is on a single turbo system as well witch needs less oil flow than the corvette twin system. Just my .02
Well, my STS is on my 02 WS6, its got the bigger turbo, and I would think you really wouldnt want to restrict that, its bigger. the STS scavenger pump is designed and engineered to pull three time more oil then the engine oil pump is sending to the turbo.
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Old Apr 3, 2009 | 08:19 AM
  #77  
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True, and some ppl dont need restriction, but I cant afford to scrap a brand new turbo just to see if another one dont need one. I dont have the money to keep spending over again. Thanks for the kind words on making over 500.

Ohh and I have another update .. I just bought a 12 Bolt!! so that might put some of the other work off for a few weeks, but I think it will be worth it in the end
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Old Apr 3, 2009 | 01:18 PM
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Originally Posted by Super Slow SS
True, and some ppl dont need restriction, but I cant afford to scrap a brand new turbo just to see if another one dont need one. I dont have the money to keep spending over again. Thanks for the kind words on making over 500.

Ohh and I have another update .. I just bought a 12 Bolt!! so that might put some of the other work off for a few weeks, but I think it will be worth it in the end
So do you agree that you DONT need the restrictor.? Im trying to find out why people with rear mounts are using them. It cant be good for the turbo to starve it. You know.?
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Old Apr 3, 2009 | 01:36 PM
  #79  
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I know what your saying but I obviously do NEED one like a lot of other people to keep it from over filling the turbo, and I run an even better pump then the STS kit comes with.
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Old Apr 3, 2009 | 04:00 PM
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run it without, see if it leaks.. if it does, get a small restrictor is wat i'd say..
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