997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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997.1 Dguth's Forged Engine Build

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Old Sep 1, 2017 | 11:30 AM
  #31  
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Are those the manifolds glowing under the car?


Originally Posted by SamboTT@ByDesign
Thanks Steve!

Hopefully for most it's all in the 1st post. 900hp, not whp DynoJet AWHP to be clear.

Later I mentioned 800wheel (AWHP) to be my personal goal while monitoring everything. We have over 10 By Design Stage 4 997 cars on stock motors over 700wheel...All wheel. Followed by about 20 of over 107 By Design Stage 4 991TT 3.8 cars with the 68mm non-GT2 VTG's making 720-750 AWP and setting records. Then Mark Blackwell's 991 with a By Design/Spec motor running 819 AWHP and running full 1/2 miles no problem with our same TiAL VTG set up. It's a lot of fun!

So we are emulating that motor build. No DI but running E85 so I think we can get pretty close to this...


 
Old Sep 1, 2017 | 12:10 PM
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Oh yeah baby. Wait till you see his on ethanol! In J's (02black330ci) thread he's got a great video of them glowing
 
Old Sep 7, 2017 | 05:56 PM
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OK buddy. Did some tuning on the road in the car is an absolute beast. Dare I say I'm going to shoot for 650-700wheel on 93. Picked up one drum to mix up with our ridiculous 91 over here and we are ready to party tomorrow!




 

Last edited by SamboTT@ByDesign; Sep 7, 2017 at 06:26 PM.
Old Sep 7, 2017 | 07:30 PM
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She's looking really good! Getting close to 700 at the wheels on 93 pump is going to be pretty awesome.
 
Old Sep 8, 2017 | 02:32 AM
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Sam, when building the engine , did you notice if the cams were really spooned ? To much P cars with the 0021 0011 with not much information about it
 
Old Sep 8, 2017 | 09:30 AM
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Good point. Not really. It was a slight deviation in this case although it makes no difference when you have to address it. The other shop did most of the diagnostics but they did try everything. It's a very hit or mess kind of a thing. I've got some guys pushing their stock motor way too hard at almost 800 to the rear wheels and nothing happens at 7400 RPM. Then there are stories about guys that are either factory or just have a team with no increase regiment and it happens to them. This kind of bloomed into a "why not this car is going to be awesome" situation ha ha.
 

Last edited by SamboTT@ByDesign; Sep 8, 2017 at 09:59 AM.
Old Sep 8, 2017 | 10:13 AM
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Awesome build and clean car! You are in great hands with Sam and the crew. When all done, it should be a really fun street car.
Isn't it funny the frunk of 997s were almost perfect designed to hold 5 gal race pails?
 
Old Sep 8, 2017 | 04:23 PM
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Ok, quick update. Here's some views on how it turned out on the 93 pump gas results. I'll post comparisons below of standard baseline and new numbers along with corrected baseline and new numbers. Again these are different dynos at different times during the year. Baseline used a dynojet dyno which usually reads higher compared to a mustang dyno which reads much lower. Baseline was also in March where temps are much cooler compared to the temp today in CA was 109 in the dyno room.

Baseline standard uncorrected: 600hp/644tq
New standard uncorrected: 682hp/612tq




Baseline corrected: 583hp/630tq
New corrected: 648hp/583tq



Really pleased with the results especially if you take into considerations the different dyno comparisons and temp issues. The torque curve is much broader and comes on earlier throughout the rpm band.

Planning to do the E85 runs next week!

Let me know what you think.
 

Last edited by Dguth; Sep 8, 2017 at 04:31 PM.
Old Sep 8, 2017 | 04:43 PM
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Cheers buddy I'm really happy with it. Look how we brought the torque in with cams heads and big turbo chargers! The car is just an animal. Lifts up in third gear and grandes the tires. Can't wait to see what the street beast does on ethanol!

As promised everyone who sends me their car gets this little token...Turn up your speakers and hide the kids !

 
Old Sep 8, 2017 | 07:14 PM
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Congrats guys! Looking forward to e85 results!
 
Old Sep 8, 2017 | 09:00 PM
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That is an epic video of your dyno pull. Hope you don't mind I shared it with a few enthusiast friends. Car sounds amazing and the flames just add the icing. Congrats! I'm sure you will be very happy when you get it back
 
Old Sep 8, 2017 | 10:18 PM
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Cheers guys! Look at this air flow on the right at 7800 rpm! That's only 22psi!




 
Old Sep 8, 2017 | 10:53 PM
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Looking solid guys & this is on pump....just to think E85 is night and day!!

I am surprised that not only are these turbos making power past 7k+, it seems to be continuing to build power up past 7600rpm's with VTG's! Very impressive overall package to make this all happen and the fun is just getting started!
 
Old Sep 9, 2017 | 07:41 PM
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CHRIIIIIS!!!

Bobby I know your on the fence bro. 2 fences actually haha. Cheers E85 will be interesting! So far I'm glad we have delivered and the best part is Daniel can drive the car hard no worries. It's a completely different beast for sure and it just pulls to 7800 so far just on pump we gained about 100!
 
Old Sep 9, 2017 | 11:14 PM
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How far do the stock MAFs read? What's the flow rating?
 


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