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Old 08-02-2008, 09:55 AM   #1
bulgarianfreak55
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333 WHP, 325 WTQ AGILE!

Default GT52 Suggested Motor

So in the near future, I'm thinking of getting the GT52. I don't want to blow my stock engine before getting a new one so I want to start off right away with a built engine and keep the old one as a spare. Anyway, I'm thinking I'll be doing 400 whp on 93 and 450 ish on race gas. For that application I'm thinking either the Cosworth block (http://www.vividracing.com/catalog/c...4-p-19135.html) or the Crawford S3L-H. Any suggestions?
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Old 08-02-2008, 10:22 AM   #2
ec2k1gt
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I think you'll find that most people will sugest keeping the stock motor at those power levels. With a good tune the stocker wont have a problem handling that type of power.
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Old 08-02-2008, 10:48 AM   #3
bulgarianfreak55
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it's a daily driver I can't afford to have it down if and when the stock blows. with those numbers I don't feel like playing games with the engine and being on my toes during the tune. I want to use the GT52 to its full potential and beat on it with out worrying everytime I step on the throttle.
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Old 08-02-2008, 02:29 PM   #4
squashman
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I'm running a Crawford S3L-i with a lot more power than a GT52 delivers with no problems. I was debating the Cosworth bottom end as well (I have Cossie heads/cams), but the opinion was that it didn't offer any more of an advantage over other reputable blocks, just a price disadvantage.

edit: BTW, I ran the stock block on a GT52 for over a year at 24PSI (pump/meth map) without issue. The comp and leakdown tests both showed positive results. $5k is a lot to spend as 'insurance' even though your stock block is probably quite capable of handling the GT52.
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Old 08-02-2008, 04:18 PM   #5
bulgarianfreak55
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I was debating just changing out the pistons but I heard it messes up the calibration of the engine and its just better to buy a whole new block.
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Old 08-03-2008, 06:35 PM   #6
jaxscuby
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stay away from vivid racing..long history of bad customer service.
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Old 08-04-2008, 12:16 AM   #7
scooby2.0t
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I would say if money isnt an issue go with the cosworth.
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Old 08-04-2008, 08:02 AM   #8
AspenGC8
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I would look at AMR's ST25 or SS25 short blocks. I have a GT52 that I'll be maxing out soon (EWG setup 26+ psi w/meth), and AMR is building a SS25 for me.
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Old 08-04-2008, 09:01 AM   #9
Clark_Kent
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I wouldn't buy a Cosworth block for what you are trying to acheive. I would buy a simple piston/rod shortblock and go from there. RAW, AMR or Crawford. As squashman mentioned, there is no real need to go with a built block for said power levels. I have been on the stock block with the GT52 for a year as well. A would say the vast majority running the GT52 are still on the stock block. If it makes you sleep easier, by all means go all out.
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Old 08-04-2008, 11:15 AM   #10
bertune
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Buy a new shortblock from the dealer and cp drop in pistons, put them in and you are good for the power u are looking for.
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Old 08-04-2008, 11:53 AM   #11
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For Higher power and race gas applications I would reccomend the S3L-I. It has the stronger I Beam rods in it. Also just a heads up there is a coupon code on our website that gives you 10% off everything in the online store. It is "SUMMERSAVINGS" in all caps. Let me know if you have any questions.
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Old 08-05-2008, 02:33 PM   #12
Element Tuning
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As mentioned with solid tuning the GT52 can be run with the stock engine without worry of breaking a rod etc. No matter what the stock STi pistons can fail at 400 whp if detonation occurs so if you're looking for piece of mind and reliability.

We built a motor for a customer who was running a GT52 who was on a stock engine that never failed and his odometer was way up there. In the end I recommended we build him a short block with rods and pistons but he also debating adding cams. I wasn't sure cams would really benefit the GT52 as it can really make the most of the stock heads but I was surprised at how much it improved the pull all the way to 8k rpm. In the end the money was well spent.

Feel free to contact us and I'll be happy to discuss the pros and cons and where the GT52 strengths are.

Thanks,
Phil
www.elementtuning.com
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Old 08-05-2008, 04:29 PM   #13
auslyle
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get the built motor... i know to many people that are on there 4th and 5th motors.... just start out right
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Old 08-05-2008, 04:46 PM   #14
MS WRX
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Keep it OEM until you absoloutly have to go aftermarket. OEM fitment and clearances rule!!!
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Old 08-05-2008, 05:25 PM   #15
auslyle
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Get The Built Motor!!
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Old 08-07-2008, 12:00 PM   #16
SplatZ400
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Like phil, and everyone else have said the stock block can handle it. I am running a stock block on my GT52 and have not had any issues.

ps phil did my tune
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Old 08-08-2008, 12:25 AM   #17
scoobydave
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Hey man i ran the same set up but i have a gt 30 kit ,of the stock block
i got about 25k of this set up and i blew a gasket and my 4th cylinder is is gone so now im getting a cosworth block and my car is daily as well so make your own decision . go w/ the new block.
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