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View Full Version : Turbo stupidity....



zandrew
04-05-2013, 12:05 PM
For some reason I continue to come across deals that I can't say no too. I had plans on building a mild sub 300awhp setup with excellent spool and sourced parts to build a billet TD05H 20G. Then I came across a GT3071R and bought it just to find out it was a GT3076R, sucks since I really was considering the GT3071R too be to big. On one of my late eBay scrounges I came across a brand Billet S252 and picked it up. Looked at some more dyno's and figured it was not the best idea and started to consider converting the GT3076R to a 71R. Then I found a lightly used Gt2871R and snagged it. I was pretty content with selling the S252 (which is still my plans) and running the GT2871R and keeping the 3076R incase I wanted more. Then today I came across yet another turbo that I just could not say no too and bought an oil less CT2 5558 billet Comp turbo.

So I am going to throw this out there and see what others think.

Give your opinions and why. I think I am going to stick with the GT2871R and sell the GT3076R and use the CT2 5558 for my growing turbo.

I know economically speaking it does not make sense to go this way but consider that in all 4 turbos I have considerably less combined then what the CT2 5558 costs new.

Audiguy1234
04-05-2013, 12:19 PM
Go with the CT5558 even it cost you more than the others combined, being oil less is awesome. Never have to worry about the leaking lines or oil starvation. Ideally you want your engine oil separate from your turbo oil. I went turbos similar to you but I never bought 4 at once. I bought a gt3071r and used it for about 6 months then upgraded to a 76r and now a ct3 5558 oil less extended tip. I talked through it with Mike hood. He was quite helpful.

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zandrew
04-05-2013, 12:31 PM
Go with the CT5558 even it cost you more than the others combined, being oil less is awesome. Never have to worry about the leaking lines or oil starvation. Ideally you want your engine oil separate from your turbo oil. I went turbos similar to you but I never bought 4 at once. I bought a gt3071r and used it for about 6 months then upgraded to a 76r and now a ct3 5558 oil less extended tip. I talked through it with Mike hood. He was quite helpful.

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I don't think you understand. I actually got all 4 turbos less then $1800. The CT2 is brand new as is the S252. The GT3076R and GT2871R are used but as close to new as you can get.

By chance do you have a dyno of the 5558? I have looked for some good info on it from people that have used them but no luck. Its seems to be highly regarded as well. The thing that I did not know is that you have to actually service the oil less setups by sending them in to be regreased. I wonder what the service period is?

andyrew
04-05-2013, 02:33 PM
The 5558 is going to spool like the 3076..

Your already WAY above your anticipated HP mark... That 5558 is north of 400awhp capable... I like your idea of starting with the GT2871.. I mean thats what will really fit your bill, and when you want some more, that CT will be the last one you will need... Personally I have my CTB5356 and I doubt I will ever need any more... I can just keep cranking up the boost till I get tired of the car..

Audiguy1234
04-05-2013, 05:45 PM
I have heard the service period is probably around 20k or so. I am still breaking in my CT3. I suppose if you look at it financially it would make sense to sell the comp turbo and pick one of the turbos you have.

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Seerlah
04-05-2013, 06:24 PM
Keep them all and play with them all till you run the one you like. Then sell the rest.

GOODBYNAAIR
04-05-2013, 06:45 PM
^ not a bad idea but if you need some cash for your setup sell 2. I like what you said start with the 2871 and keep the GT30 because one day you will want moar powr!!

ZimbutheMonkey
04-05-2013, 10:58 PM
Yeah, for someone who's looking for lower end perfomance , CT 5558 is gonne be a pretty late spooling turbo compared to he rest of them. Unless you do up the head with cams, you won't get it's max performance.

For an engine running a stock set of cams and a 7200 RPM limit (assuimg you decide not to build the head, the GT2871 is probably going to be your best bet imo.

My 5556 hits fool spool at 5000 RPM (at elevation) and that's with high timing and a high compression ratio and everything possible done to spool it, and it's still maxing out even with the 56mm turbine. The 58mm turbine with one less blade and say more mass at the end of the turbine will spool even slower.

Persoanally I'd have taken a 5856 or even a 5552 if you wanted fast spool. I'd still consider that Bullesye S252 if it's one of their newer compressors. I've heard good things about their products, just kinds sketchy things about service...

viceprp
04-07-2013, 06:14 AM
What are your goals? Are you still aiming for a mid 300whp car? Are you going to run a more aggressive cam? Built head? Upgraded throttle body and IM?

Just curious on how far you see yourself splerging into your car. If you don't think you will go balls out then I would pick the turbo that will compliment the mods you plan on having.

I have a 3076 and once it is running, I will be building up a small port head, 3658 cams, and IE's adjustable cam gear.

Dan[FN]6262
04-07-2013, 06:22 AM
vote to ban

.Mad Hatter.
04-07-2013, 06:58 AM
From what you have I would go 2871 as is it very capable off meeting the goals you seem to want. Personally, I would sell them all and go GTX3071 or HTA2868.