finally ran 12's!!!
 

After trying a bunch of times to pull it off stock I gave in and bought some mods...

12.899 @ 107.64 mph
1.866 60ft
DA = ~620 on this run

2009 base + sport 6MT

mods:
stillen oil cooler
JWT flywheel
Berk high flow cats
still running stock RE050A potenzas!

http://i198.photobucket.com/albums/a...h_IMAG0207.jpg

other runs for the night:

13.312 @ 105.5 mph
1.955 60ft

13.046 @ 106.16 mph
1.840 60ft

13.001 @ 107.04 mph
1.890 60ft

congrats trance! great times

Nice congrats! Welcome to the 12sec NA club :)



DAN

NICE! I too am aiming for 12's. Can't wait to hit the strip..

Great runs. What are your thoughts on the flywheel. I've been getting some temptation to swap mine. How much more freely does the engine rev?

Congrats! Great times. Fantastic 60' there, magic shoes. :tup:

Nice times!

Congrats. I hope to hit 12's as well when I hit the track, but the last three times we had reservations to rent Atco in NJ it rained. Maybe next time.

Damn!
Why aren't you modding some more?!

Thanks everyone! When I finished the run I thought I had a 12.9xx - little did I know I did slightly better! Feels good to finally hit my goal.

I highly recommend it, as Jnaut recommended it to me. I actually had his shop install it all the other day. Went straight from the shop to the track!

Atco is definitely a quick track (I used to live in NJ). Definitely faster than Englishtown from what I've heard.

I've gone full bolt ons before with my last Z and wasn't completely happy. This time around I only plan to install the 'best bang for your buck' mods. With that said I'll probably have jnaut install 4.08 gears later on, maybe throw in some solid diff bushings too while he's in there.

BTW, I'm very pleased with the mods installed. Great job by Jnaut's shop. :tup:

my best stock time
13.127 @ 105.27 mph
DA = -421
temp = 54 degrees F

with high flow cats & jwt flywheel
12.899 @ 107.64 mph
DA = 620
temp = 70 degrees F

The numbers don't lie. Even without taking into consideration the DA's I picked up 0.228 seconds on the ET and 2.37 mph with just two mods.

What exactly does the flywheel do for you?

The motor rev's a lot quicker because a significant amount of weight was removed from the flywheel. It really wakes up the car. And as a result SRM works a lot better too. Not that expensive for the part itself, maybe $400 or so depending on which one you get. Only downsides are the noise at low rpm's & idle, that and it might be difficult or pricey to install because the transmission has to be dropped to install it.

What kind of noises does it make? and any idea on how expensive of an install?

Those are huge gains over stock for just the Berks hfc and flywheel. Were the primary gains due to the flywheel or HFC's? Did you do any runs with just the HFC's?

rayray puttin it down 12.8's is awesome!!

at idle, its kinda same noise as stock just a little louder. maybe some buzzing (i guess thats the word?) in 1st & 2nd from idle to 1500 but not that big of deal IMO. Stock is a dual-mass flywheel that dampens all these noises but stock is also about 30lb.

The cost is about the same cost as a clutch job. It's a perfect mod to do if your clutch is toast, you save on labor.

My car has never been on a dyno, so I have no idea how much power each of the mods make. But I definitely think the flywheel registers more of a difference on the butt dyno than the HFC's.

I didn't do any runs with just the cats alone.

yeah we're definitely lucky to have such a sticky track!

A light weight flywheel had to be one of the best mods I ever did on my G20 and I'm sure it will b on the Z when I do it, but I only got 6400 miles so its probably going to be a while.

haha did my flywheel @ 3200 miles!! :tup:

I'm gonna be in the 12s before you :rofl2:

I'll let you take my Accord down the track if you let me drive the Z :stirthepot:

what are your times on the Accord?

Congrats on the 12 second timeslip.

Congrats on the time!

If I'm correct, flywheel is only for manual transmissions? Is there something that would provide similar performance enhancements for a 7AT? I know 4.08 gears is DB option, but I DD my Z and spend most of my time on the highway, so I don't think I want to go that route.

Wow -- open dif too! Congrats!

Has anyone found any real advantage to having the LSD?

Higher stall torque converter.

Having a tune so that the shift speed/firmness is tweaked (it's tunable with uprev).

is your track level ? lol

He has the sport pkg

Ohhhh... I thought he said base model, so I assumed, no sport pack :p

So are all the faster times from folks with a LSD then, OEM or otherwise?

Probably doesn't matter for drag racing. The limited slip comes into play much more when you're powering out of corners and the rear tires are unequally weighted.

I ran my 12.9 on an open diff. Havent went back with the 4.08s and vlsd