TravisJB Journal

Zeto · 04-05-2010, 12:30 PM

Quote:

Originally Posted by ChrisSlicks

That all depends on how your car is setup. From the factory you have slightly more rear camber than front camber, and the rear can be adjusted to around -2.0 with stock suspension. It's typically the front that rolls the tire edge the most during cornering, it's the heaviest part of the car and experiences the most loading.

The pressures I quoted are if you have after-market sway bars installed with adjustable front camber. With stock sway bars there will be more body roll and you will need slightly higher pressures to compensate.

Oh ok gotcha! Yes I have stock suspension. Another question, I just had an alignment done and had my rear toe at 0 but for some reason they couldn't get my driver side rear camber past -1.8. They said I would have to get a camber kit. Does that sound right?

ChrisSlicks · 04-05-2010, 01:44 PM

Quote:

Originally Posted by Zeto

Oh ok gotcha! Yes I have stock suspension. Another question, I just had an alignment done and had my rear toe at 0 but for some reason they couldn't get my driver side rear camber past -1.8. They said I would have to get a camber kit. Does that sound right?

That sounds right. I think at 0 toe I was maxed out at around -1.8 on the driver's side as well.

Zeto · 04-05-2010, 02:57 PM

Quote:

Originally Posted by ChrisSlicks

That sounds right. I think at 0 toe I was maxed out at around -1.8 on the driver's side as well.

Ok good. I thought I messed up the suspension with our wonderful Jersey roads

travisjb · 04-09-2010, 09:20 PM

NASA AZ night event tomorrow... will be a packed event, good chance to test the car on a track I've not run before - Firebird Main

On of the engineers I work with has an extensive background in aerospace fluid dynamics and stopped by my house tonight to provide input. Here's the list we came up with - in no particular order:

a. replace headlights and tail lights with flat contoured aluminum sheets
b. likes the idea of a flat bottom but would prioritize side skirts ahead of that... goal is to be <3" off the ground on sides and have them extend out enough to be effective
c. he likes the idea of using the side scoops to generate vortices out the rear license plate area... recommending creating two counter opposing vortex generators and experimenting with the amount of airflow to determine optimal
d. doesn't like the front splitter design and instead recommends creating an entirely new front fascia with a gradual build up from lower lip tapering smoothly to hood... if keeping front splitter, doesn't need to stick out any farther and should be made more light weight
e. add a flexible 'skirt' from hood to windshield to eliminate the large seam that exists now w/o the plastic
f. create ducts in fenders behind the front wheels and determine a way for air to flow out of the wheel wells along the side panels / doors
g. reduce the volume of the wheel wells somehow hugging closer to tires
h. make the rear diffuser a lower priority
i. add small plastic fairings in front of the open windows to keep some of the air from rushing into the cockpit
j. optimize the angle of the rear wing... and make corresponding changes to rear suspension spring rates
k. feels the rear of the car is very "un-aero"... add vortex generators all along the back of the car to minimize the air separation... suggested I study some older aircraft designs that were retrofitted with vortex generators
l. also on the rear, he strongly recommended shave the 'hump' off the rear hatch - it is only cosmetic and is causing a major drag effect

Also, here's an updated project list:

- check steering column... very loose at hub... 2 screws are stripped
- update the splitter with t. washers and eliminate some weight
- fabricate air box for rear flow and setup diff cooler and pump
- weld / fill the holes on the rear deck
- shave weight on hood, rear hatch, bumper beams, rear structure, etc
- more permanent wiring for electrical accessories
- fix triple gauge... possible short
- fix SRM... possible short
- add front brake cooling
- swap radiator hoses for new SAMCO's
- resolve fuel starvation issue
- install longer wheel studs and open lugs
- alignment... -3.5 front / -2.5 rear, dial back caster to ~5
- install spa oil/water gauge in place of clock
- COBB tune... then dyno for NASA

Trailer to do's:
- patch holes in trailer... big one on side, some little ones
- install electric winch in trailer
- paint floor with "porch paint"

F250 to do:
- figure out why battery light keeps coming on

FuszNissan · 04-09-2010, 09:44 PM

Good Luck

ChrisSlicks · 04-09-2010, 09:49 PM

Sounds like your project list just got a heck of a lot longer! Look forward to seeing what happens with those aero ideas.

Mike · 04-09-2010, 09:51 PM

Quote:

Originally Posted by travisjb

f. create ducts in fenders behind the front wheels and determine a way for air to flow out of the wheel wells along the side panels / doors

Funny he mentioned that one. I work with a local corvette shop, MTI Racing, and they added the louvered Katech front fenders to their shop car and I don't remember how much speed they picked up due to reduced turbulence and getting the air out the top, but it was fairly significant.

travisjb · 04-09-2010, 11:01 PM

like this right ? should help draw air from under car and from wheel wells... may also help manage air flow separation and resulting drag around sides of car

travisjb · 04-09-2010, 11:17 PM

hey all, if i need to manually wire my headlights for a night race... what's the safe way to rig that up for a couple 20 min sessions ? can't find my headlight / turn signal switch, so that's the key challenge...

travisjb · 04-10-2010, 12:28 AM

here's the headlight swtich diagram on the BCM... assuming i can just connect a few of these together... will give it a try

schrute · 04-10-2010, 01:45 AM

First dibs on the headlights and taillights if you decide to sell them

I'll need a spare set to pass inspection one of these days

Looking at that diagram I agree - looks like you're good to just complete the circuit.

MightyBobo · 04-10-2010, 05:18 AM

Someone may as well order Travis another ECU while we're at it

Just kiddddinggggg....

ChrisSlicks · 04-10-2010, 08:44 AM

It's a 5x5 matrix yielding 20 different combinations of connections. The output transistors are turned on one by one (ground reference) to sense which inputs are active.

But basically if you wire INPUT 2 to OUTPUT 5 via a switch with an in-line diode you will activate HEADLAMP 1 mode, and if you wire INPUT 3 to OUTPUT 4 you will get HEADLAMP 2 mode. I don't know what is different between these 2 modes so you will have to test it.

For those trying to turn on the voltage signal to the fog light it looks like you can wire INPUT 4 to OUTPUT 5.

There are no specs on the diode shown but it doesn't look like it is doing anything special other than regulating current flow in the right direction. A IN4001 (available anywhere) should do the trick.

travisjb · 04-10-2010, 09:13 AM

good explanation chris... i got it working last night by simply wiring 2-5 to a switch and 3-4 to a switch... interestingly, they both seem to do the same thing = low beams... you run either or both and LOW BEAMS... no idea why that is...

By the way, the numbering on this matrix is different than the pin numbering so for anyone using this chart make certain to look up connector number "m33" for an explanation of how the I/O maps to the pins

Also, I didn't use diodes... is that bad?

ChrisSlicks · 04-10-2010, 09:30 AM

Quote:

Originally Posted by travisjb

good explanation chris... i got it working last night by simply wiring 2-5 to a switch and 3-4 to a switch... interestingly, they both seem to do the same thing = low beams... you run either or both and LOW BEAMS... no idea why that is...

By the way, the numbering on this matrix is different than the pin numbering so for anyone using this chart make certain to look up connector number "m33" for an explanation of how the I/O maps to the pins

Also, I didn't use diodes... is that bad?

The diodes are a safety to ensure that current only moves in the one designated direction. I would add them to prevent the chance of damaging the BCM. Just make sure it points from input to output, i.e. stripe side facing output.

04-09-2010, 09:20 PM	#904 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	NASA AZ night event tomorrow... will be a packed event, good chance to test the car on a track I've not run before - Firebird Main On of the engineers I work with has an extensive background in aerospace fluid dynamics and stopped by my house tonight to provide input. Here's the list we came up with - in no particular order: a. replace headlights and tail lights with flat contoured aluminum sheets b. likes the idea of a flat bottom but would prioritize side skirts ahead of that... goal is to be <3" off the ground on sides and have them extend out enough to be effective c. he likes the idea of using the side scoops to generate vortices out the rear license plate area... recommending creating two counter opposing vortex generators and experimenting with the amount of airflow to determine optimal d. doesn't like the front splitter design and instead recommends creating an entirely new front fascia with a gradual build up from lower lip tapering smoothly to hood... if keeping front splitter, doesn't need to stick out any farther and should be made more light weight e. add a flexible 'skirt' from hood to windshield to eliminate the large seam that exists now w/o the plastic f. create ducts in fenders behind the front wheels and determine a way for air to flow out of the wheel wells along the side panels / doors g. reduce the volume of the wheel wells somehow hugging closer to tires h. make the rear diffuser a lower priority i. add small plastic fairings in front of the open windows to keep some of the air from rushing into the cockpit j. optimize the angle of the rear wing... and make corresponding changes to rear suspension spring rates k. feels the rear of the car is very "un-aero"... add vortex generators all along the back of the car to minimize the air separation... suggested I study some older aircraft designs that were retrofitted with vortex generators l. also on the rear, he strongly recommended shave the 'hump' off the rear hatch - it is only cosmetic and is causing a major drag effect Also, here's an updated project list: - check steering column... very loose at hub... 2 screws are stripped - update the splitter with t. washers and eliminate some weight - fabricate air box for rear flow and setup diff cooler and pump - weld / fill the holes on the rear deck - shave weight on hood, rear hatch, bumper beams, rear structure, etc - more permanent wiring for electrical accessories - fix triple gauge... possible short - fix SRM... possible short - add front brake cooling - swap radiator hoses for new SAMCO's - resolve fuel starvation issue - install longer wheel studs and open lugs - alignment... -3.5 front / -2.5 rear, dial back caster to ~5 - install spa oil/water gauge in place of clock - COBB tune... then dyno for NASA Trailer to do's: - patch holes in trailer... big one on side, some little ones - install electric winch in trailer - paint floor with "porch paint" F250 to do: - figure out why battery light keeps coming on __________________ 2009 370Z #104 For Sale

04-09-2010, 09:44 PM	#905 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	Good Luck __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

04-09-2010, 09:49 PM	#906 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	Sounds like your project list just got a heck of a lot longer! Look forward to seeing what happens with those aero ideas. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

04-09-2010, 11:01 PM	#908 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	like this right ? should help draw air from under car and from wheel wells... may also help manage air flow separation and resulting drag around sides of car __________________ 2009 370Z #104 For Sale

04-09-2010, 11:17 PM	#909 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	hey all, if i need to manually wire my headlights for a night race... what's the safe way to rig that up for a couple 20 min sessions ? can't find my headlight / turn signal switch, so that's the key challenge... __________________ 2009 370Z #104 For Sale

04-10-2010, 12:28 AM	#910 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	here's the headlight swtich diagram on the BCM... assuming i can just connect a few of these together... will give it a try __________________ 2009 370Z #104 For Sale

04-10-2010, 01:45 AM	#911 (permalink)
schrute Track Member Join Date: Aug 2009 Location: utah Posts: 781 Drives: my z every day Rep Power: 17	First dibs on the headlights and taillights if you decide to sell them I'll need a spare set to pass inspection one of these days Looking at that diagram I agree - looks like you're good to just complete the circuit. __________________ my journal \| 2009 370z touring \| 6mt \| platinum graphite \| my album second skin \| mr works \| fast intentions \| ssr \| eibach \| hotchkis \| spc \| toyo \| bluebatmobile \| v-led \| jwt \| ventureshield \| tinted tails

04-10-2010, 05:18 AM	#912 (permalink)
MightyBobo A True Z Fanatic Join Date: Feb 2009 Location: Las Vegas, NV Posts: 8,465 Drives: No cars; only bikes Rep Power: 52	Someone may as well order Travis another ECU while we're at it Just kiddddinggggg.... __________________ I don't own a car anymore.

04-10-2010, 08:44 AM	#913 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	It's a 5x5 matrix yielding 20 different combinations of connections. The output transistors are turned on one by one (ground reference) to sense which inputs are active. But basically if you wire INPUT 2 to OUTPUT 5 via a switch with an in-line diode you will activate HEADLAMP 1 mode, and if you wire INPUT 3 to OUTPUT 4 you will get HEADLAMP 2 mode. I don't know what is different between these 2 modes so you will have to test it. For those trying to turn on the voltage signal to the fog light it looks like you can wire INPUT 4 to OUTPUT 5. There are no specs on the diode shown but it doesn't look like it is doing anything special other than regulating current flow in the right direction. A IN4001 (available anywhere) should do the trick. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

04-10-2010, 09:13 AM	#914 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	good explanation chris... i got it working last night by simply wiring 2-5 to a switch and 3-4 to a switch... interestingly, they both seem to do the same thing = low beams... you run either or both and LOW BEAMS... no idea why that is... By the way, the numbering on this matrix is different than the pin numbering so for anyone using this chart make certain to look up connector number "m33" for an explanation of how the I/O maps to the pins Also, I didn't use diodes... is that bad? __________________ 2009 370Z #104 For Sale

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