TwinTurbo.NET: Nissan 300ZX forum - I'm going to answer this with a post I wrote a long time ago
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Subject I'm going to answer this with a post I wrote a long time ago
     
Posted by sweet z (UTAH) on October 08, 2008 at 11:57 AM
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In Reply To Sweet project! Question.. posted by hunterg on October 08, 2008 at 11:30 AM
     
Message ((First off, I have been building Z32's for over 6 years
now. So i have some experience with them . I have done
simple stuff from Stock motor rebuilds to Full Builds/
Internals GT2530's to make a 500+whp Z. But never anything
more extreame than that...
I did design a Single turbo Kit for the VG30DETT but never
emplimented it. in the middle of building it on the Car i
made the decision to change the motor.. So i have no proof
that it would have worked perfect. but i did like the
idea's i had.

But on my racing resume I have assist building a 1300+
supra and 3 800+ Honda's. If you follow any racing at all
you have seen or heard of our Utah Cars Tearing it up at
IDRC, NHRA, NOPI on the West Coast..
The Fastest Honda has gone 9.3@160, and the Supra Has gone
8.8@170.. These are full interior cars might i add, not
gutted.. Just simple saftey features that are required and
they are also manual Tranny's...


Now on to my Ride..
First off, remember i said that i am building this car for
Mostly Drag only.. it will see a highway every now and
then.. but at the same time in my class i have to have
License plates and be registered. I have to have full
interior and all the required stuff on the Car that would
have to Pass Saftey in any state.
When I started the Build it was for NHRA Sport RWD Class so
you had to stick with same motor manufacturer as chassis.
There is no longer NHRA SC but I decided to leave it how I
started it. So that left me with Nissan. NO problems there
we have plenty of amazing motors availible.
Now with that being said for amazing power i could have
went with the RB or even the VG. But with a 6 cylinder you
have to have minumum weight of 3600lbs with 1 power adder
and 3700lbs with two power adders.
a 4 cylinder has to weigh 2900lbs with 1, and 3000lbs with
2.
1 power adder being a turbo, and 2 being turbo/Nitrous.
Second was the fact that the RB can make crazy power in the
1000+ range but parts are not as easy to come by if i start
breaking stuff often at that power. along with the price of
everything and 6 of everything to buy.
Now on to the VG. WE all love the motor. it is the heart of
the Z. I know it inside and out so i am comfident in all my
knowledge and theory's and thinkings of the motor. Also i
have talked with Teams like Escort Z who build the 1200+_
7.1@192+ drag Z with the VG...
It can make crazy power But again you have to buy 6 of
everything and Escort told me on there car that once they
started breaking 900+ hp they were going through main
bearing like butter. at 1200+hp they had to change them
every race.. That's 7 passes on a motor.
So with that being said if i could get 1100 out of the VG i
would have 1100+3600lbs=fast
Now on to the SR.
They are Everywhere, They are cheap, Parts are cheap, Parts
are readily availible for it. I only have to buy 4 of
everything.
I did the weight comparison and the SR is 250lbs lighter
then the VG. now that is fully loaded. Turbo's and all on
both motors.
So with drag racing 250lbs off the front of the car equals
a lot better weight transfer.
With my experience from our honda's i don't see why i can't
get 800+ on the SR with boost alone and maybe a little more
with spray. I know a SR head does not compair to the Honda
head, but just trust me on this one.
so 800+2900lbs=faster.

Now onto my setup. Like i said the car is not put together
right now due to a complete overhaul on the body.
But i have

GT4294R
AEM
1600CC injectors
12x24x4.5 IC/Vband ends
4" DP
Tial 44mm WG
Tial 50mm BOV
Weldon FP/FPR
Tilton Twin plate
Richmond 4.10 Gears/Rear
Custom Intake Mani.
Z32 5speed Tranny

Im sure there's more but that the basics.))

After I wrote that post I researched the SR20VE a lot more
and discovered that it is the best SR20 motor built. The
Head is light years ahead of the DE/DET head. The ports are
bigger than a B series honda's and does not have the
interferance like the DET head have.
Also it has the VVL, which is Nissan's version to Honda's
Vtech to a T. with 3 lobs per int/ex port per cylinder. So
I have the low lobs for good idle/tune/fuel consumption,
but the High Lobs for high RPM/Power. the big lob on my
Cams are 288/12.0 :)

Hope that helps.


     
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