Modifications II - Page 1



"I got dragstrip courage
I can really drive a bed"

- Tom Waits - "Goin' Out West"




Photo by Bubba Z.

Figured I'd send the NX VE packin for the west coast.
Other tuning options were out there
but as this was somewhat uncharted territory...
didn't want to play hit or miss and screw up this bad boy.

Should I have stopped with just NA SR20VE "proper" tuning?

Nah, bring it all down, slap it all on...

Project Goals
1) retain a somewhat stock NX appearance
2) keep it a daily driver
3) incorporate decent handling/ride
4) eliminate transmission reliability issues
5) install decent brakes
6) add some power, deep into the 300hp range

 
Only thing that kept me up some nights was the specter of reversion - took up residence over the VE valves and in my head when thoughts of slapping an FMAX Stage II (or any other turbo) worked their way into my brain (check out the cam overlap diagrams on page 2). Zealots tend to have selective vision with respect to the object of their zealotry and as I am clearly one, I found it took some effort to approach this project with a critical eye trained on vulnerabilities. This project platform, I must admit, has its weak points (overheating, cam overlap, etc.) and they demanded an unbiased survey of all of the available options before they could be properly addressed. I tried to do this with as many redundant systems as possible.


Photo by Bubba Z.

In my mind the VE was always considered a great foundation for a fun project - not an end unto itself.

Amendments/updates to the Mods I section (in case you care)
1) The ECU program directed the VE to be rich under WOT to the tune of about a 7hp penalty previous to its cross-country jaunt/new program version.

2) The stock pistons of the VE are flat, not domed as was speculated. There are pics of the stock VE pistons on page 4.

3) An SR20DE header gasket and possibly aftermarket DE header WILL CHOKE the SR20VE. I had an aftermarket DE header on the VE previous to the engine rebuild/turbo stage and my VE was in fact being choked by the DE gasket and possibly even the header itself by a 0.25" overhang! This was due to the slight difference in the positioning of the DE exhaust ports relative to the VE exhaust ports. Obviously this not only overrides any possible gains from scavenging effects etc. but also causes nasty amounts of reversion and turbulence which leads to power loss. A shot of the VE head on page 3 (exhaust port side) clearly shows a black exhaust pattern that points to serious leakage problems. The OE VE manifold is pretty good and I should have stuck with it until the turbo stage.

Had fun all summer, bought a house, got married, began building a garage and prepped for the winter hibernation/transformation.

Almost all of the pictures on the following pages are thumbnails linked to larger ones, click on em' if you're interested in more detail. If you are interested in even more detailed and larger versions than the larger posted pics, drop me an e-mail. I can send them to you if you need them for technical reasons. I have most of these pictures in a larger format than what is posted (they would take a LOOOOOOOOONG time to reach your machine and would take me too long to upload to the various servers I use).

BIG thanks to Mike Smith of MS Performance and Jim Wolf Technology (JWT) for all of the non-FMAX fabrication, which was almost EVERYTHING, for managing the project, for doing some amazing work, for all of the pictures (except where noted) and all of the expertise below. Mike is the BEST.

Also BIG thanks to Mike Kojima for developing the turbo and brake packages.

 
NX Project Timeline
October    20, 1998 Ordered SR20VE From JUN
November   6,  1998 SR20VE Arrives NJ
February   4,  1999 NX & SR20VE Are One (See Mods I)
February   11, 1999 Suspension Change-Out (Eibach, GAB, ST)
March      27, 1999 Volk TE-37s Arrive
April      3,  1999 Installed JVC Head Unit, JVC 15 CD Changer, 
                    Infinity Kappas Front/Rear
May        12, 1999 Level 10 Package Installed (See Transmission Page)
June       23, 1999 Viper Alarm/Remote Start Installed  (Doubles As Turbo Timer)
August     12, 1999 Ordered FMAX And SMC Packages
August     16, 1999 Ordered Stillen Package
August     16, 1999 JWT Communicates Its Package Particulars Begins Parts Accumulation
October     1, 1999 NX Develops Lewis And Clark Complex And Acts Accordingly
October    14, 1999 NX Arrives JWT
October    19, 1999 Proper Tuning Done (NA) Baseline Reached
November    5, 1999 Motor Disassembled
November   15, 1999 Block Bored & Honed
November   18, 1999 Pistons Sent To Swain
December    8, 1999 Pistons Return JWT
December    8, 1999 Spearco Intercooler Ordered
December    9, 1999 Intake Manifold Port Matched & Head MILD Port
December    9, 1999 Head, Valves Sent To Swain
December   28, 1999 FMAX Package Arrives JWT
December   28, 1999 Spearco Intercooler Arrives JWT
January     4, 2000 Head/Valve Stems Return To JWT Valves Micro-Polished
January    31, 2000 Internals Balanced
February    5, 2000 ES Bushings, SMC Kit Slapped On
February    7, 2000 Intercooler (Endtanks) Fabricated Sent To Swain 
                    For Black Body Emitter
February   22, 2000 Rebuild Finished
March       1, 2000 Black Body Emitter Coated Intercooler Returns MS Performance
March       2, 2000 FMAX Kit Bolted On
March       9, 2000 Turbo Plumbing Finished Sent To Powdercoater
March      28, 2000 Exhaust Fabrication Finished
March      29, 2000 Fuel Pump Changed
April       6, 2000 Tuned For Mild Boost
April      20, 2000 Programming/Tuning Completed
May        15, 2000 GTI-R Vents Ordered
May        21, 2000 Spearco Intercooler Optimizer Ordered (Later Rejected)
June        8, 2000 Spal Fans Ordered
June       17, 2000 Spal Fans Arrive
June       30, 2000 GTI-R Vents Arrive
July       10, 2000 Hood Cut/Downpipe Wrapped
July       28, 2000 Intercooler/Radiator Sprayer Fabbed & Installed
August     12, 2000 Break-In Completed
August     24, 2000 NXSR20VET Returns to Tony Saprano Land


SMC Package
4 Piston Aluminum Calipers Front
11.2" Slotted Rotors Front
Hats
Mounting Brackets
Stainless Steel Lines
Maxima Re-drilled Rotors Rear
Maxima Calipers Rear






Front OE vs SMC




Rear OE vs SMC




Front SMC Rear SMC Front Caliper
 
Above are some pics of the billet calipers and slotted rotors on the front and the Maxima rears.
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