Derracudas zermatt 20vt,6spd, 351awhp - July 4th drive vid

derracuda · Post by **derracuda** » Fri Aug 07, 2009 9:47 am

WOMBAT wrote:now don't go blamin' that stretchin crap on me! I had to to make the wheels fit That motor is looking great though!

it's all your fault buddy

i can't not stretch!!

mmmm, ronal goodness....

gonna have room for some killer brakes

plus! i can now finally lower the car!

Europrice · Post by **Europrice** » Fri Aug 07, 2009 9:52 am

OMG Ebay header will blows up yo motorz!

Looking good Derek!

Highlander · Post by **Highlander** » Fri Aug 07, 2009 3:50 pm

Derek,

As usual, looking bloody brilliant.

Keep up the good work.

I managed to put 40kms on my urq today.

Nearly there.

Cheers,

Craig.

Audilard · Post by **Audilard** » Fri Aug 07, 2009 4:23 pm

You are going to love those Dunlops. They run wide and I love the handling so far. They grip like mad.

my2000apb · Post by **my2000apb** » Mon Aug 10, 2009 12:49 pm

:woowoo: :woowoo: looking sweet D!
keep it up

derrish_vulf · Post by **derrish_vulf** » Mon Aug 10, 2009 2:00 pm

That intercooler is INSANE!!!

Keep at it man!!

WAUG0806 · Post by **WAUG0806** » Mon Aug 10, 2009 2:39 pm

kinda feeling deja vu looking at the pix... noice werke!

Longitudinal · Post by **Longitudinal** » Tue Aug 11, 2009 6:59 pm

cuatrokoop wrote:Air density certainly affects how it behaves Jonathan. You affect the Reynolds number with density, which affects the boundary layer/laminar flow/turbulent flow. This is making me want to get my old text books out and dust my brain off.

OK. Thanks for the correction. So density changes how the air flows, but what about my idea of the only change being density, versus the air being "pushed" in instead of "pulled?" I still think the air is being "pulled" regardless of density. Wrong again?

cuatrokoop · Post by **cuatrokoop** » Tue Aug 11, 2009 7:13 pm

It's all driven by pressure differences. You lower the pressure on one side, you create movement as the system tries to equalize (high pressure expands into the low pressure region). So, you are always moving the air from the high pressure region to the low pressure region. A piston does the same thing on the intake stroke. So the flow bench works best in replicating a NA engine rather than a forced induction engine, but you can use it to check pressures at the inlet and outlet(s) to get a better idea of what is happening inside, if you have a good balanced flow, etc. So no, not really wrong again...

derracuda · Post by **derracuda** » Tue Aug 11, 2009 8:36 pm

Audilard wrote:You are going to love those Dunlops. They run wide and I love the handling so far. They grip like mad.

funny you should mention this. my tires showed up today...here are some conclusive measurements.

falken azenis RT-615 235/40/17 measures out 8.5" on the tread width, 9.25" total width. height 24.25"

dunlop Direzza star spec in 215/40/17 measures out 8.5" on the tread width, 9.25" total width. height 23.25"

i wanted 235mm width tires that were about an inch shorter... whoo hoo!!

pilihp2 · Post by **pilihp2** » Tue Aug 11, 2009 8:53 pm

i dont wanna be a douche or anything. but im just gonna throw this out there...
if you wanna keep under hood temps down, why dont you header wrap the header and downpipe, plus do the heatshield...??

derracuda · Post by **derracuda** » Tue Aug 11, 2009 9:03 pm

header wrap tends to destroy things when it comes to turbo temps.... it keep too much heat in and crystalizes the metal. it's better to have an air gap around the pipes so they don't retain too much heat.

audifreakjim · Post by **audifreakjim** » Tue Aug 11, 2009 9:29 pm

derracuda wrote:header wrap tends to destroy things when it comes to turbo temps.... it keep too much heat in and crystalizes the metal. it's better to have an air gap around the pipes so they don't retain too much heat.

:stupid:

pilihp2 · Post by **pilihp2** » Tue Aug 11, 2009 10:36 pm

derracuda wrote:header wrap tends to destroy things when it comes to turbo temps.... it keep too much heat in and crystalizes the metal. it's better to have an air gap around the pipes so they don't retain too much heat.

and that is something I did not know... right on..

Toxcheap · Post by **Toxcheap** » Tue Aug 11, 2009 10:47 pm

audifreakjim wrote:
derracuda wrote:header wrap tends to destroy things when it comes to turbo temps.... it keep too much heat in and crystalizes the metal. it's better to have an air gap around the pipes so they don't retain too much heat.
:stupid:

I want to see this one on myth busters.
My exhaust manifolds wrapped, bagged with reflective heat stuff too. That goes for my turbo too. My downpipe is just wrapped, it's all been like that for 11 years now!! I may not have a big turbo, but I can guarantee that K24 turbo at 26psi running super lean on race fuel has seen EGT's no big turbo guy would chance his motor on

derracuda · Post by **derracuda** » Tue Aug 11, 2009 11:16 pm

Toxcheap wrote:
audifreakjim wrote:
derracuda wrote:header wrap tends to destroy things when it comes to turbo temps.... it keep too much heat in and crystalizes the metal. it's better to have an air gap around the pipes so they don't retain too much heat.
:stupid:
I want to see this one on myth busters.
My exhaust manifolds wrapped, bagged with reflective heat stuff too. That goes for my turbo too. My downpipe is just wrapped, it's all been like that for 11 years now!! I may not have a big turbo, but I can guarantee that K24 turbo at 26psi running super lean on race fuel has seen EGT's no big turbo guy would chance his motor on

there's always a lucky one

my dad has told me of numerous old buick turbo v6's and how the original ones had the manifolds and cross over pipes wrapped/covered, and they just crystalized and would completely fall apart. not to say that audi probably used a better alloy in casting their EM's, but still.

DP wrapping i don't think has ever caused a problem, but i know i've read it on here a few times about guys with headers or whatever that have really taken a beating from being really wrapped up. if mythbusters would do it, i would applaud them, but it would mean they are super desperate for a show

, and they would need to dyno engines under a load for like... weeks straight

my2000apb · Post by **my2000apb** » Wed Aug 12, 2009 6:37 am

Toxcheap wrote: I may not have a big turbo, but I can guarantee that K24 turbo at 26psi running super lean on race fuel has seen EGT's no big turbo guy would chance his motor on

hahaah i dont doubt it

a_CQ · Post by **a_CQ** » Wed Aug 12, 2009 7:16 am

Derek, the tire measurements, were they both off the wheels? Or if mounted, were they mounted on same wheels?

derracuda · Post by **derracuda** » Wed Aug 12, 2009 8:25 am

a_CQ wrote:Derek, the tire measurements, were they both off the wheels? Or if mounted, were they mounted on same wheels?

the 235 is mounted on an 8" rim, the 215 is unmounted, but will be mounted on an 8.5" rim. i measured bead to bead on the tire just sitting there, and it's 8.25" from the outer sides of the bead, so almost where it would sit on an 8.5" rim.

either way, the actual tread contact patch doesn't change so much with mounting tired on a narrow or wide rim (unless you are on a really skinny rim and it pooches the tire up). i will measure the 215 once it's on the rim for 100% measurements.

chapel · Post by **chapel** » Wed Aug 12, 2009 6:17 pm

What valve cover is that? 7A?

cuatrokoop · Post by **cuatrokoop** » Wed Aug 12, 2009 6:19 pm

Yes...

chapel · Post by **chapel** » Wed Aug 12, 2009 6:26 pm

thought so
those bolt right onto an AAN with LS2 coils without any issues?

derracuda · Post by **derracuda** » Wed Aug 12, 2009 7:00 pm

chapel wrote:thought so
those bolt right onto an AAN with LS2 coils without any issues?

what part of LS2 coils screams OEM audi to you?

i have no idea if they'll bolt up "no problem", but my guess is they'll stick out and look kinda ugly.

chapel · Post by **chapel** » Wed Aug 12, 2009 7:38 pm

what will stick out?
the LS2 coils use standard plug wires. the coils are mounted on the firewall.

my2000apb · Post by **my2000apb** » Wed Aug 12, 2009 7:50 pm

chapel wrote:what will stick out?
the LS2 coils use standard plug wires. the coils are mounted on the firewall.

shoudl work fine, its just a plug wire sticking out the hole like most other setups