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2000-2005 Eclipse (General 3G) General discussion and information about 2000~2005 (3rd Generation) Eclipse


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Old February 13th, 2018, 01:37 PM   #1 (permalink)
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Name: Wesley
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Forged pistons

I own a 2001 Mitsubishi Eclipse GT (3.0L V6 24v SOHC). I want to put a turbo on it and I know a few people who have and blew their engine because of the low compression. Anyways, I still want to slap a turbo kit on it but I want to take the safe route and get some forged high compression pistons and eventually new cams, but the problem is i dont know what the dimentions of pistons i will need unless i dismantle my whole engine because theres hardly any threads on this. All i know is that the stock pistons have a conpresson ratio of 8.9:1 and the standard diameter is 91.10. I honestly know very little when it comes to pistons but i would like some guidance or input on what i should do to find these things out and reccomondations on who can make them.
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Old February 13th, 2018, 03:07 PM   #2 (permalink)
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The best thing to do is to take your inquiry to an engine builder. Specifically one who works on blocks. Remember that there are two main "blocks" to an engine - top and bottom. Head and Block. And they are two specialties, if you will. So take your head someplace, and your block to another.

I will recommend the two people I and many other experienced 6G7* gearheads use - Ray Pampena in Long Island (Pampena Motorsports) and Dennis Hobbs in Las Cruces (Hobbs Performance). They know this line of engines inside and out. And every build is different - tell them what you want to do and they'll guide you in the right direction.

As for pistons, I'm glad you're asking the right questions. You want boost, and for that you'll want a reliable and lower CR. 8.0 to 8.5 will give you a very tunable car on pump gas, with decent boost. Up to 18lbs, I'll say. All you really need (or can), with the '72 SOHC. Sorry to say, those heads aren't very good at all. That's why people opt for a '75M swap. But, for FWD applications, who really needs more than 440FWHP? Go get yourself a drag bar and slicks for the front, and say hello to driving an ugly car!

Good luck, and be safe.
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Old February 13th, 2018, 08:13 PM   #3 (permalink)
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Well one, you are on the wrong fourms...u have a 3g.

Your GT CR is not 8.9:1 the GT is 9:1 which isnt low...and low CR isnt what will blow your motor.
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Old February 13th, 2018, 10:12 PM   #4 (permalink)
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Originally Posted by 6g75_3g View Post
Well one, you are on the wrong fourms...u have a 3g.

Your GT CR is not 8.9:1 the GT is 9:1 which isnt low...and low CR isnt what will blow your motor.
+1. Low compression won't cause you to blow up. It actually helps prevent pre ignition, and saves your engine. I suggest you do a lot of research before you jump into a project like this. Also, wrong gen of car. Check out the forum below

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