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Stock Fuel Rails, why they don’t keep up

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Thread Starter #1,561
Ditch the hex head bolts for the rails. 1st time you need to take them off you will wish you did. I went with same style small head bolt you told me to use for the blower itself. I can use a ratcheting wrench now for the rails
Good idea, luckily I have a close quarters hex bit kit so it wasn’t that much of a pain. I installed the injectors and rails after the blower was tq’d down. Yes, it’s tight getting them in doing such.
 


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vortecd

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Good idea, luckily I have a close quarters hex bit kit so it wasn’t that much of a pain. I installed the injectors and rails after the blower was tq’d down. Yes, it’s tight getting them in doing such.
I had to take them off to take injectors off and Jon was working on one he had to swap injectors, true pain
 


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Thread Starter #1,565
Gen 6 was developed already?
Yep, supposed to be a bit more efficient rotor design. Rotors are pinned to the shafts as well, and just a bit bigger.

IMG_7961.png
IMG_7955.png IMG_7953.png
 


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What size tb are you going to run?
 


fubar569

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...a new 6th Gen 3.8?

......well then. Guess we have difficult choices to make now.
 


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Thread Starter #1,568
What size tb are you going to run?
Putting the Nick Williams 112 back on. Have a specially made adapter for it.

IMG_7651.jpeg IMG_7653.jpeg IMG_7652.jpeg
 


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Thread Starter #1,569
Look how much fatter the 3.8 is then the 3.0, rotor case protrudes into the intake runner area even.

IMG_4530.jpeg IMG_7844.jpeg

Rotors pinned to the shafts as well

IMG_7840.jpeg
 


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Thread Starter #1,570
What size tb are you going to run?
But even the huge compared to stock TB the 112 looks puny and out of place on the huge inlet of the 3.8. I may have to go to the 130 just because of that, just doesn’t look right.

IMG_8256.jpeg IMG_8249.jpeg
 


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Thread Starter #1,571
But it sure flows enough!!

IMG_8278.jpeg

3.00 Pressure Ratio baby!!

IMG_8280.jpeg
 


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Thread Starter #1,572
Correct but you are comparing a 3.0 to a 3.8. Gen 5 3.8 also has big inlet
My buddies Gen 5 3.8 hit as well, same spot, worse than mine. He had to grind much more off then I did.

IMG_8047.jpeg
 


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Thread Starter #1,574
Even with the spacers?
No, just gaskets, no spacers. With spacers unfortunately bypass motor hits the hood. You can cut the center member out of the hood and it will clear that’s just something I’m not up for doing. Keep the car to the point that if I ever needed to put it back to stock except for the engine internals, I can I have all the parts on hand still including the stock manual transmission, a new stock clutch and TOB assy, even a NIB 3.70 rear. I even have a whole set of spare leathers for the interior.
 


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Thread Starter #1,575
Unfortunately now I’m out of fuel pump, time for a third pump.

IMG_8282.jpeg

But man even with just 5 degrees of timing and slipping the thing pulled it’s highest third gear G force ever up the concrete test sloop bridge I do such on, .85 G’s of continuous acceleration. Felt GREAT!!!
 


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First hurdle, stock fuel rails do not fit on the 3.8, there’s no mounting points for them provided :(

View attachment 118454

Whipple cut me a GREAT deal on the Fuel Rail kit for it, THANK YOU Whipple!!
NICE kit, much nicer then Fore kits I have seen View attachment 118448
Why doesn’t yours have the extra brick in the middle?
 


Unholy707

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Next hurdle, without spacers blower snout is hitting block keeping it from mating to heads and sealing on gaskets. Good thing in look for this stuff. Hard to see it, I wonder how many are going to get tightened down without seeing this and have intake leaks and stress out into the blower housing!??
View attachment 118462 View attachment 118463 View attachment 118464 View attachment 118465 View attachment 118466

Surgery time

View attachment 118467 View attachment 118468

A little paint and like new again

View attachment 118469 View attachment 118471 View attachment 118470
My 4.5 hit on the same area grinder the crap out of it
 


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30 PSI of boost there buddy, that's a rocket ship now.
 


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Thread Starter #1,579
Why doesn’t yours have the extra brick in the middle?
Cooling bricks are in the lid, they’re all the same 3.0 and 3.8 Gen 5 and 6 unless you get the thicker ones for use with a spacer. I have never seen a separate cooling block in the middle?
 


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Cooling bricks are in the lid, they’re all the same 3.0 and 3.8 Gen 5 and 6 unless you get the thicker ones for use with a spacer. I have never seen a separate cooling block in the middle?
I have seen several 3.8s with the spacer in the middle, specifically the billet ones. @GNBRETT’s has one, I think a few others
 




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