BLACK BEAST BUILD Slicktop R-Spec

Haha, maybe I just jinxed you by thinking about it, so like, 900-1000Nm and they pop?

If you go to the drags you might want to look into fancy axle shafts like all the guys with GTR diffs run, billet aluminium or chrome-moly or whatever's the new hotness.

 

Can't put a figure on it ... Too many variables ... It held on the dyno in 4th

R230 should be fine ..can't be that unlucky .

.

 

More about running over US1000bhp than luck, although now that I'm looking for it I can't find the examples of people snapping GTR shafts so maybe it's rarer than I thought. The R230 should be more than fine of course, I was just thinking about the shafts.

 

Z32 tt and gtr shafts are the same thickness and plenty strong, guys pull wheelies on them. NA shafts though.......

 

BDE VTC and broken camshafts

I'm a bit late to the entire discussion so I would first like to address a few comments I've read so far...

I'm quite certain nobody needs to worry about my BDE gears breaking their camshaft(s) anytime soon. I've rebuilt almost 1500 VTCs since 2008 and an epidemic of broken camshafts hasn't happened.

Very sorry to disappoint, but let me explain my reason for not balancing: Nissan didn't balance any S2 (Late) VTC when they were new and the parts that I add are all 100% machined and located concentric to the assembly, so any increase of imbalance would be negligible compared to what it was originally. Please read below for more.

Yes, it is a shame. I'd like to offer my side of the story...


Let me explain what a BDE VTC is. It is a stock Nissan part that I disassemble, clean, check for internal wear and scrap worn parts, black oxide coat, replace main spring, replace o-ring, and install BDE retainer. All parts are interchangeable, but I do mark them during tear-down and 99% of finished pulleys have all the original internals married back with their original main hub/cog.

The Early (S1) VTC have six holes. Other than these six holes, the S1 pulley is 100% machined by Nissan. The holes are not machined and are a leftover from the forging process. They are not concentric nor are they consistently sized, both of which would most definitely affect overall balance. I have found roughly 1 out of every 100 S1 pulleys to have a factory drill mark for what I assume to be balancing purposes.

The Late (S2) VTC is a two-piece design with a forged steel, machined central hub and a powdered metal outer cog. The powdered metal cog is only machined on the center and face for hub location, other than that, every other surface is as it came out of the PM die. Its thickness varies by roughly 0.003" to 0.005" depending upon where you measure. I have never found a S2 pulley with evidence of factory Nissan balancing.

In addition, the S2 pulley has 0.002" to 0.004" clearance between the center hub and the outer cog (this is a factory Nissan machined clearance, not BDE). With the VTC installed and when the adjuster bolts are loosened, this clearance will undoubtedly allow the cog to be forced off center by whatever the clearance is and affect balance.

My point is, balancing these parts was not exactly a huge concern for Nissan and condemning me or my rebuild process for not including the additional time and cost of balancing is unjustified. There may come a time were certain builds warrant doing this, perhaps Rob is already there, but I cannot justify balancing all for the few applications that may need it.

Rob, the reason I told you I cannot guarantee another pulley would be better or worse is because I do not want to get into a pissing match with a 3rd party machine shop about balancing when I have no chance of defending myself on the spot.


I don't want this single post to get too long, but one last thing I want to address is Tech@EPR mentioned the VTC bolts are different lengths, this is correct, the Early S1 used a short bolt that measures 1.980" under head length (UHL) while the Late S2 uses a longer bolt that is 2.210" UHL. I have to imagine that many, many '90-'94 owners have used a short bolt with an S2 cam when they switched to aftermarket cams based upon S2 cores but retained their original S1 pulleys and short bolt while using the JWT spacer, so I don't think this scenario presents much of a problem. The worst case scenario is using a long S2 bolt with a S1 cam and potentially bottoming or jamming the bolt in the camshaft's threaded hole.

 

Thanks for the input, that all seems pretty fair.

 

And to follow up on Brett's post - my cam pulleys where modified stock not BDE's when my cam snapped. I was incorrect, I had bought his gears but for my street car not for the race car. Street car is running fine and well over 400KW since I put them on in 2009!!

Why did my racecar cam snap - probably lots of abuse and they were on their 2nd engine and had been modified as well as being over 20 year old. Not sure why Blackbeast's snapped.

I am planning on purchasing a set of the cam pullets from Brett for the race car in the near future.

Just wanted to set the record straight.

 

Hi Brett

My conclusion pointing to the gears only came from a process of elimination because the only thing that was common is the same S2 gear on the cams in 2totally different engines .

I will say that the new gears I have on are actually smoother/quieter in operation .

End of the day its a mystery to me as it doesn't make sense .
I've had mine balanced now just as a precaution .


.

 

Little update

Beast now has had the PPG box put in .

Had it at the POWERCRUISE earlier this year for the 3 days ..drove to and from each day

Car performed flawlessly running at 26psi all weekend sitting on around 700rwhp (makes 500rkw (670rwhp) @23psi)

First day (Friday) it was deadly with the R888'S drifting in 4th on the straight
next morning fitted same size mickey thompsons 315/30/18 and it was a whole different car :br:

Finishing off a few little things like splitter and going to have some track days

6 speed sequential would be amazing on this setup


https://youtu.be/ct3ANoS8sgo

:br:

 

Where's the like button :zlove:

Wish I'd known you were going I would have come out for a look and say Hi.

BTW can't play the video as 'private'.

 

I'll post up when I get to the track again

vid should work now .

 

Any vids of some races? Chop any GTR's?

 

I have other footage I still have to go through but upset a few supras and skylines .


.

 

Why have you not shared this

Maybe I'll have to tag along next time, give them a zed blackout
Excuse the pun

How's box holding up, got a feeling that's going to be my next weakness..

Have to catch up soon when I'm up as per our discussion

 

Box is strong and C/F tailshaft is taking a beating .

You will more than likely blow 3rd gear when you make more power/torque..


.

 

Don't say that !! I need it to hold for at least 7 more months lol

Good thing I don't tune on 3rd gear hahahaa

Guess we will find the limit of the VG box then hey, I have a 98+ model trans. See if it handles a bit better

See how the tail shaft holds up also.. Given it was only rated to around 450rwkw

 

Just about complete (NO SUCH THING )

BLACK BEAST
SLICKTOP TT R-SPEC


565RWKW @ 5800RPM - 30PSI
460RWKW &1000NM TQ @ 4500RPM


ENGINE
Beast Race Spec Stage 1
SERIES 2 MOTOR

RACE PORTED HEADS
CHAMBERS RELIEVED AND BORE MATCHED
FERREA 1mm OS VALVES
FERREA DUAL VALVE SPRINGS
FERREA TITANIUM RETAINERS
VITON VALVE STEM SEALS
JUN 66 264/9.5 CAMS
BDE INTAKE GEAR SPROCKETS
BDE EXHAUST CAM GEARS
GATES RACING KEVLAR TIMING BELT
TOMEI METAL HEAD GASKETS

BLOCK TORQUE PLATE BORED/HONED TO 88MM
WATER GALLERIES DRILLED/DEBURRED
CRANK KNIFE EDGED/BALANCED/MICOPOLISHED
CRANK PULLEY & FLYWHEEL BALANCED TO CRANK
EAGLE RODS
CUSTOM WISECO PISTONS CERAMIC COATED
(ALL PARTS CRYOTREATED AND BALANCED)
ACL RACE BEARINGS
NEW OEM OIL PUMP
PLENUMS PORTED/HONED AND MATCH PORTED
TWIN K&N XTREAM FILTERS
GTX2863R TURBOS 3" INTAKES
Z1 58mm THROTTLEBODIES
TDMWORKS FMIC + 2.5" PIPING
TURBOSMART 50mm RACE PORT BOV's
CUSTOM ROSS U/D RACE DAMPNER 4.8kg
GREDDY OS RACING PULLEYS
BDE ENGINE MOUNTS
CUSTOM STAINLESS TURBO WATER LINES
TWIN 19 ROW OIL COOLERS -10AN smic locations
GREDDY THERMOSTATED SANDWICH PLATE 10AN
POWER STEERING 7 ROW COOLER
N/A POWERSTEERING PUMP
ASI RADIATOR 56MM
SZ HIGH VOLUME OIL SUMP
CUSTOM OIL CATCH/BREATHER AND WATER OVERFLOW TANK
PENRITE RACING OIL
PARTS CERAMIC/HPC COATED


FUEL

MATTZ TOPFEED FUELRAIL
ID1300CC INJECTORS
CUSTOM 4 litre BAFFLED FUEL SURGETANK
WALBRO 400LPH LIFT PUMP
TWIN BOSCH 044'S -8AN FUEL LINE
FUELAB FUEL REGULATOR -8AN
A1 FUEL FILTER 40 MICRON
8AN ALUMINIUM FUEL LINE AND TEFLON HOSES/FITTINGS
ZEITRONIX ETHANOL SENSOR
FUEL COOLER
FLEX FUEL 98 TO E85


WHEELS

TE37 SUPERLAP
18 X 10 +20 275/35 R888
18 X 11 +18 315/30 R888





BODY

JET BLACK
MODIFIED 35mm SPL WIDE/VENTED FRONT GUARDS
CUSTOM 45mm REAR METAL WIDE BODY
MODIFIED UAS/GREDDY FRONT BAR FOR WIDEBODY
MODIFIED TWINZ REAR BAR/DIFFUSER FOR WIDEBODY
CUSTOM UNDERTRAY FOR TWINZ BAR DIFFUSER
STILLEN TYPE III SKIRTS AND DOOR FILLERS
BORDER VENTED BONNET
AEROCATCH BONNET PINS
C/F VENTED NOSE PANEL
CUSTOM AIRTRAY
GANADOR C/F MIRRORS
POWERTRIX FOG LIGHT DUCTS
APR GTC-300 1700mm CARBON WING +REINFORCED HATCH
CUSTOM FRONT SPILTTER WITH APR SUPPORTING RODS
CUSTOM TOW HOOKS

SUSPENSION

RE TEIN COILOVERS CUSTOM SPEC (ex UAS slotcar)
EDFC
IKEYA FORMULA FRONT LOWER ARM
IKEYA FORMULA REAR LOWER ARM
IKEYA FORMULA TENSION RODS
TUNE AGENT TRACTION RODS
UAS FRONT UPPER PIVOTING CAMBER ARMS
DRIFT SPEC REAR UPPER CAMBER ARMS
UAS HICAS ELIMINATOR (midori style)
SUPER PRO BUSHES diff ,sway bars,steering
SPL ALLOY SUBFRAME BUSHES
OKUYAMA CARBING FRONT STRUT BRACE
SPL FRONT FENDER BRACES
UAS RADIUS ROD SUPPORT BRACE
STOCK SWAYBARS
MODIFIED CHASSIS PIVOT POINTS FOR ROLL CENTRES
UAS CUSTOM BILLET TIE RODENDS


BRAKES

STOPTECH FRONT 355MM SLOTTED
STOPTECH REAR 328MM SLOTTED
FERODO DS2500 PADS
CHILI MASTER CYLINDER BRACE
MOTUL RBF 600 BRAKE FLUID
UAS BRAKE AIRDUCTS

INTERIOR

COBRA SUZUKA PRO GT SEATS
COBRA ALLOY SEAT MOUNTS
CROW 5 POINT RACE HARNESSES SFI 16.1 APPROVED
MOMO COMPETITION WHEEL
NRG SHORT BOSS QUICK RELEASE
CARBON FIBER VINYL TRIMMING
6 POINT CAMS SPEC ROLL CAGE with full interior
AVT RACE PEDALS
FIRE EXTINGUISHER


DRIVECHAIN

PPG HELICAL DOG BOX
PST CARBON TAILSHAFT
COMPETITION TWINPLATE CLUTCH
MODIFIED STOCK SHORT SHIFTER
LEADERS GEARS 4.10
QUAIFE LSD
UAS CLUTCH LINE
PENRITE GEARBOX & DIFF OIL


EXHAUST

MIKE SMITH MANIFOLDS ceramic coated
AMS 3" DUMPS ceramic coated
AMS 3" TEST PIPES
SZ 3" CATBACK -XPIPE WITH DUAL TIP MUFFLERS



ELECTRICAL

HALTECH PLATINUM PRO
HALTECH I/O EXPANDER BOX
HALTECH DUAL WIDEBAND
HKS TWIN POWER IGNITION
ZEITRONIX ETHANOL ANALYSER KIT
SSB LITHIUM BATTERY 2.5KG 900CC
VEI DUAL AFR GAUGE
DEFI RACER 60mm WATER TEMP
DEFI RACER 60mm OIL TEMP
DEFI RACER 52mm OIL PRESSURE
DEFI RACER 52mm EXT TEMP
DEFI RACER 52mm FUEL TEMP
DEFI RACER 52mm FUEL PRESSURE
DEFI RACER 52mm BOOST GUAGE
DEFI RACER 52mm VOLTS GUAGE
BLITZ SBC DUAL BOOST CONTROLLER
POWER ISOLATOR SWITCH



for the old school



time for a retune :br:

 

a few pics from the weekend cruise