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Exciting New Head Option for EJ205/EJ257 Hybrid Builds!

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Old 05-19-2010, 12:09 PM
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We've been having a lot of heads sent in for this service lately from all over the country. Here are some pictures of the process:

Here are some pictures of the process:








More pics of the final product coming soon!

Thanks
-- Ed
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Old 07-06-2010, 01:47 PM
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Final product pic:



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Old 07-06-2010, 02:19 PM
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+1 Great new option.. once my 2.0 goes, I guess this is what I'll be getting, too.. =D
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Old 07-06-2010, 02:55 PM
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I knew i recognized those .....
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Old 07-06-2010, 04:03 PM
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!!

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Old 07-06-2010, 04:34 PM
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Looks great. Do you have any dyno charts comparing a hybrid build that used a thicker head gasket vs. a hybrid build using your new method?
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Old 07-06-2010, 05:10 PM
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Originally Posted by stg2lgcy00
Looks great. Do you have any dyno charts comparing a hybrid build that used a thicker head gasket vs. a hybrid build using your new method?
I could overlay a couple cars. The problem is that they're not exactly the same setups, so the comparison wouldn't be 100% fair. I'll see if I can find a couple that are very similar.

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Old 07-06-2010, 06:59 PM
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Ok, yea that would be cool to see a comparison of two cars that are relatively similar other than their choice of assembling the block + heads. I realize most people won't have the exact same set of parts in their build.

Def considering this option once my EJ205 reaches the end of its days.
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Old 07-07-2010, 12:14 PM
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Here is the closest comparison I could find:



The Blue curve is an 02 WRX with an EQ Stage 1 shortblock, EQ Stage 2 heads (w/o CNC) using a thicker head gasket to bring down the compression ratio. Its running a VF43, STI TMIC, Catless TBE, DW740cc injectors, and MBC.

The Red curve is an 04 WRX with EQ Stage 1 shortblock, EQ Stage 2 heads w/ CNC work using a factory STI head gasket. This car is also running a VF43 with STI TMIC, Catless TBE, 07 STI Injectors, and MBC.

I think this is actually a very fair comparison as the setups are very similar and both have our built engine. This really shows the big mid range gains that these CNC heads provide.

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Old 07-07-2010, 12:26 PM
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Awesome. Pretty decent gain in hp and a huge bump in tq
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Old 07-07-2010, 12:54 PM
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that 04 wrx sure looks familiar!!
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Old 07-07-2010, 06:18 PM
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Yep... that'd be yours Jacob!

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Old 07-07-2010, 10:17 PM
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I couldnt be any happier with these heads!! amazing work EQ Tuning!!
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Old 07-08-2010, 04:12 AM
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wow... i really wish i did this haha, i literally just got done a week ago finishing my hybrid swap at GST motorsports, which they did a great job for sure, i just wish i knew about this... :'( haha how much in labor would that cost to switch heads?
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Old 07-20-2010, 01:12 PM
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Originally Posted by Urglegrew
wow... i really wish i did this haha, i literally just got done a week ago finishing my hybrid swap at GST motorsports, which they did a great job for sure, i just wish i knew about this... :'( haha how much in labor would that cost to switch heads?
You'd be looking at about $1500 in labor to swap out the heads. You would need to be re-tuned at that point as well.

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