A running pictorial of my monster Protomotive build - Page 29 - 6SpeedOnline

Apr 4, 2008 | 11:26 AM

#421

GT RUS

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Mod SLR is whole other beast then stock...its beats easy CGT and 630 LPE ZO6 !!!

Nov 2, 2008 | 11:24 AM

#422

Sker66

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Awesome Thread!

Thanks Scott For Sharing.

Nov 2, 2008 | 06:12 PM

#423

cjv

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Quote:

Originally Posted by TRK

Derboost is right on with the boost thing. Figure, if you have a 2" inlet valve, the surface area is pi r ^2, or 3.14159in^2, and at 1.5 bar of boost, you'll have 68lbs of pressure trying to force the valve open... Well, if you only have 80lbs or so of seat pressure, the valve is just barely sealed, where on a gt3, you'd have the full force of the spring applying to seating the valve.
However, the gt3's also have another advantage that allows for lighter springs. The lifters are maybe 1/4 of the weight of the 996tt's as they not only don't have the variable lift stuff going on, but also are smaller in diameter. The rsr's go even further and remove the hydraulics and have a mere shell as the lifter, so with the same spring, they have proportionately higher rpm capability just due to the lower mass of the system involved.

Todd,

What about the issue of the GT3 cam's NA ideal lift and duration versus the ideal lift and duration for a turbocharged motor. In addition, Porsche cams are notorious for harmonic distortion.

Wouldn't cams designed for turbocharging along with minimum harmonic distortion require less spring pressure?

Nov 2, 2008 | 07:06 PM

#424

robmd99

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Wow
All of this stuff looks familiar! It was a sad day when Scott sold his car; I can only hope the new owner is just as aggressive as Scott!

Nov 2, 2008 | 08:18 PM

#425

Sker66

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I missed what it sold for............anyone know??

Nov 3, 2008 | 06:33 AM

#426

Acropora

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Quote:

Originally Posted by robmd99

Wow
All of this stuff looks familiar! It was a sad day when Scott sold his car; I can only hope the new owner is just as aggressive as Scott!

Trust me, that is not a problem.. We'll be getting a 150+ trap sooner or later. After that you need a parachute and that's where I draw the line.

Scott was asking $105K. Hope that answers your question.

Nov 3, 2008 | 06:49 AM

#427

Sker66

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Sounds like great fun!

Keep the shiney side up!...........cheers

Mar 8, 2009 | 11:52 PM

#428

TXGold

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From: Houston, TX

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Scott,
I tried to find my answer, but read thru about 5 pages with no luck.

Could you please describe your bottom end build details?

Thanks,
Ryan

Mar 9, 2009 | 07:40 AM

#429

Dr_jitsu

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Ryan,

I believe that the rods are stock.

Mar 9, 2009 | 08:39 AM

#430

Powell

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From: Friendswood, TX

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If I recall correctly he has Head studs, ported heads, different cams, stock rods, stock pistons, and stock crank.

Knowing this gives me hope esp. with the new EVOMS head studs.