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Old Jan 23, 2014 | 01:10 PM
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So I'm building my '93 Rx7 again after a 12 year break. (age and funds now make it possible to complete my dream car).

Currently I have finished my 383 stroker build but have a few BIG questions (search feature did not give me answers).

If I'm going to run a twin turbo setup on this motor would a engine girdle be needed? Is anyone running this type of setup w/ or w/o a girdle? What are your experiences? What type of girdle would you recommend.

My motor is a Ls6 383 Stroker. Scat crank, H beam rods, -18cc Pistons. Top end will be a BSP Ls3 sm bore stage 2 head. Boosted I'm hoping to get near the 800-900 hp mark with a little more in the bank.

I will more than likely have to bore scope the mains if I add a girdle, possibly even line hone it. But I want to get this motor correct hence why I'm asking about the need to run a girdle when the 6 bolt mains are pretty stout and the webbing might be the weak link regardless.

Let me know your experiences. Thanks a bunch!!

Last edited by Tidbit; Jan 23, 2014 at 04:18 PM.
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Old Jan 23, 2014 | 03:10 PM
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From what I've seen, 800 HP is well within limits of even the aluminum lsx blocks.

BTW who makes a girdle? I thought about putting one on my L33 but I was thinking about building the car for X235 and would be pushing 1000 to the flywheel. Below that I wouldn't even worry about it, and I'm not sure how well it would work out with some of the ls oil pans and crankscrapers.
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Old Jan 23, 2014 | 04:06 PM
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http://www.erlperformance.com/produc...parts-domestic

http://dmperformance.org/new/newpage.html

both are pretty cool. for my application the dm girdle would work just fine. But the eri is stout.
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Old Jan 24, 2014 | 04:58 AM
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I wouldn't worry about a girdle. There are plenty of guys running near 1000hp without them. Now if your goal was 2000hp I'd say yes.

If you do get one I would defiantly have the mains line honed after its installed.
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Old Jan 24, 2014 | 08:59 AM
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No girdle needed at that level. I would just make sure to get the mains pinned because they are known to walk.
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Old Jan 24, 2014 | 04:01 PM
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thanks a bunch guys. I will see if dmp is still selling.. If not I will not bother. Pinning the mains is a must. Thanks for the advice as always!
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Old Jan 24, 2014 | 04:13 PM
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I've got a brand new DM girdle sitting on the shelf I never used with the longer ARP main studs. You are supposed to torque everything down and line hone it.
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Old Jan 25, 2014 | 12:03 AM
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Keepin it?
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Old Jan 25, 2014 | 07:48 AM
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I'll sell it for a decent offer. I honestly can't even remember what it cost me. I want to say $450 or $500 though. I bought it about three years ago.
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Old Jan 25, 2014 | 12:50 PM
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