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Old 09-01-2005, 12:40 PM   #1
chevelle100
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Default How long will they last?

How much does a turbo really decrease reliability? Lets say a 100000 mile car with a 2.2 turbo running 5 psi. I've seen subarus go 200000 miles easy with no problems. Can you still do this?
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Old 09-01-2005, 01:38 PM   #2
kheff46
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i ran for about 30k on my turbo setup. i had 124k when i got the car, and just rolled 155k. i was at 5psi. and it felt good. no engine management of any sort, stock fuel pump, stock injectors with a stock 2002 wrx turbo an tmic. i just pulled it off a month ago, and no CEL or anything before or afterwards. car sound the same as before, except a new exhaust rattle! that happens though!
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Old 09-01-2005, 01:50 PM   #3
shemoves
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A big determiner would be how much boost you run. Keep in mind though, that the 2.2 turbo motor is one of the strongest production 4 cylinders ever built.
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Old 09-01-2005, 02:03 PM   #4
Master2192
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If you can install it and not get more power hungry, it'll last just as long as without the forced induction. As long as you do regular oil changes and don't hammer on the transmission.
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Old 09-01-2005, 02:21 PM   #5
Matt Monson
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Well,
Let's clarify here. Are you talking about an NA Ej22 that you add 5psi of boost to? Or an Ej22T factory turbo block. I am guessing the former, right? 5psi can be run for a good long time on an NA Ej22. It is when you hit 8-10psi that reliability drops substantially.
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Old 09-01-2005, 02:32 PM   #6
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Quote:
Originally Posted by Matt Monson
Well,
Let's clarify here. Are you talking about an NA Ej22 that you add 5psi of boost to? Or an Ej22T factory turbo block. I am guessing the former, right? 5psi can be run for a good long time on an NA Ej22. It is when you hit 8-10psi that reliability drops substantially.
To add to that, factory setting on the 2.2T motor, I beleive is around 7-8 PSI. From what I understand, people run the 2.2T motor in the low teens without issue.
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Old 09-01-2005, 10:02 PM   #7
chevelle100
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Yeah, I meant teh 2.2 na, I would only put about five psi.
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Old 09-02-2005, 03:13 AM   #8
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5psi, intercooled, with premium gas, shouldnt be a problem. Evertime you lack one of the above you may or may not experience knock. You WILL experience knock above 5 psi without any of the above. And then even with them. Unless you have engine management.
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Old 09-02-2005, 07:02 AM   #9
Migo
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So I'm under the impression that the same would hold for a EJ25 on 5 psi?
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Old 09-02-2005, 08:35 AM   #10
farrell
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i have a 2.5 turbo, 7psi and a 75 shot of nitrous. been running for about 15k miles and 9 months. no problems. no engine management,
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Old 09-02-2005, 09:02 AM   #11
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Turbos don't decrease reliability on any engine. Poor engine management does more than anything else. My last 81zxturbo had over 249,000 miles on it and I ran 10psi on it all day long. Stock was 6-7psi. I had of course swapped the afm to mas and swapped the computer to a newer 300zxt.
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Old 09-02-2005, 12:52 PM   #12
chevelle100
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The fat kit comes with engine management.
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Old 09-02-2005, 01:28 PM   #13
Master2192
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Quote:
Originally Posted by chevelle100
The fat kit comes with engine management.
Well, sort of. Here's a quote from their website

"RRFPR, a voltage clamp (for speed density equipped cars) and a piggy back computer system to control ignition timing."

Really thats all whats needed. the AVO kit comes with a much better system that the stock ecu won't fight.
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Old 09-02-2005, 07:04 PM   #14
chevelle100
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Yeah for a grand more, but I guess you get what you pay for.
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