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STANG KILLA goes "racin" Part 2

Old 04-11-2017, 10:49 PM
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STANG KILLA SS
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Default STANG KILLA goes "racin" Part 2

some of you know me from the Fbody racing forums and my threads there. for some reason my blog style posts caught on with over 50,000 views.

well ive recently made the jump to a vette and starting to document my journey along the way.

picked up a 09Z
had cam, headers, and k&N.



picked up an improved racing oil pan baffle. i picked this one over the aviaid version because it was aluminum, and didnt require you to drill 3 holes in the bottom of your oil pan. also wraps around the right side a bit more.


first up was to drop the cradle. being Magnesium it didnt weigh nothing. could carry it with one hand!




pan removed




pan cleaned and baffle bolted in. not a hard job in itself, just getting to it was the chore.

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Old 04-11-2017, 10:49 PM
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next up was the dry sump oil reservoir baffle. Aviaid was out of these but they built one for me and it came in right when we were in the middle of the pan baffle.

removed the reservoir from the fender cavity from below by removing the fender liner and loosing the fender bolts.


removed the top black plastic part. you can see the transfer tube and the port in sticks into on the left.




the baffle


next was the hard part, inserting the baffle and trying to get the transfer tube back into its port completely blind with the baffle blocking your view. but with some reference marks and some dry runs without the baffle i got it back together without too much hassle.

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Old 04-11-2017, 10:50 PM
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Pulled the valve cover off to check the LS7s achilles heel, the valve guides.
after checking 3 of them and getting .009 and .010 wobble (.007 is max) it was obvious they were bad.


so time to pull them. Intake off


heads and headers off




Sent off to AHP in California....
i keep telling myself this is what everyone does to there car thats 2 weeks old...

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Old 04-11-2017, 10:50 PM
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while i had them off i decided to paint the intakes and valve covers the z06 red since i wasnt going to put the red fuel rail covers back on (just hold heat) took me a couple days but they came out great!


there was some confusion about the cam when i bought the car. the ad said it was a custom comp cams .615 lift, then when i bought it they said it was a TSP Stage 3 LS7S cam with .655 lift.
(going back in time before removing heads)
we set up dial indicator on pushrod.
the first rotation we got .355, second pass we got .351.


if you average those you get .353
.353 x 1.8 (rockers) you get .6354 lift.
so i go on texas speed and what do i find. they have a stage 1 and stage 2 cam with that lift! went from an unknown cam to narrowing it down to 2!


also found TSP 3/8" chromoly pushrods in the car

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Old 04-11-2017, 10:51 PM
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threw the magic of the internet the heads are done and back from AHP! (2 weeks later with shipping and holidays)
man they look awesome! so good in fact i thought they were painted.








AHP Package 4 Heads (include):
- Disassemble and Assembly of LS7 cylinder heads
- Performance Valve Job (show to add 5hp+ over the stock valve job)
- Resurface Heads (or milling of heads)
- Clean and Bead Blast entire head (so they look brand new)
- Hardened Aftermarket Powder Metal Valve Guides (Harder than aftermarket bronze guides)
- Stock Titanium Intake Valves Treated and Polished
- Ferrea Competition Plus Exhaust Valves F2042P (85 grams)
- New Viton Valve Seals and machined valve locks

i also had them mill the heads .025 for more compression and upgrade to the bullet proof Moldstar90 guides.


heads back on


added .025 shorter pushrods to compensate for head mill and put intake and valve covers back on. love the look!


first fire up

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Old 04-11-2017, 10:51 PM
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rear downforce time.
Went with the C7 Carbon Extended Zr1 spoiler.
Took them about 6 weeks to make it, but it was worth the wait. Fit and finish was awesome. Resin is super deep and glass smooth, weave is straight and consistent. fit the complex bumper curves well.
Ironically i actually ordered this before i found the car...

I went a little nuts with the pics, but i like the way it came out.

lights out


drilling brand new car #nervous


installing 3rd brake light. left side i was able to use factory tab. right side i had to cut the tab and hold it on with a ground down washer. The hardest part of the whole project was repluging in the 3rd brake light plug.


test fit


Done!




dat ***







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Old 04-11-2017, 10:52 PM
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wheels and tires.

Square setup 4x

18 x 10.5
315/30/18 Rival S







unfortunatly they wouldnt clear my calipers. bought some 1/4" spacers first but those were only enough for the rear. the front needed 12mm spacers. Both hub centric. also picked up some extended shank lugs to grab more threads lost from the spacers.



bingo

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Old 04-11-2017, 10:52 PM
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Bumper and headlights removed and parts pile

Splitter/bumper reinforcement
Spindle brake ducts
Tow hook
Race pads
Fog light brake ducts
Race mesh
Blacked out headlights
LED DRLs




picked up towhook from JDP Motorsports. instead of using the supplied press in nuts, i bought and welded some nuts to a piece of steel...


marked hole locations in bumper bar


drilled view from inside bumper bar


stuck steel "handle" with nuts welded to it in bumper bar and tightened. cut off excess after tight. beats taping wrenches to sticks or the pressed in nuts.




cut grill for tow hook

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Old 04-11-2017, 10:53 PM
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brake cooling time!
I started with Lambert/Quantum Fog light ducts and some race mesh



added a slim aluminum cobb LED DRL light to replace the fogs and add some style. i just wired them to the factory fog light plugs.


ducts and mesh in


lights test




surprisingly bright


bumper/splitter re-enforcement installed


ducts on fog ducts, and grill misc stuff reinstalled


factory under bumper duct inlet, i cut off the tube 1" inside of the wheel well (inside bumper)


and here it is with the fog light ducts connected to the factory wheel well duct with the wheel well pulled back. the silver line is where the wheel well intersects the hard duct.
you can also see the LEDs wired to the fog plug and the factory opening for the brake duct now disconnected.


after 4-5 test fits the bumper is back on finally!

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Old 04-11-2017, 10:54 PM
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next was time to install the spindle ducts.
first i had to remove the wheel speed sensor and cut off the bracket.


bracket dremeled off


upgraded the factory padlets to 1 piece hawks. had great luck with these on the camaro on track.


Lambert/Quantum competition spindle ducts installed. kit also came with the peices to fully enclose 360 degrees, but i chose to leave those off. also came with tie rod heat shields. left those off too.


factory plastic wheel well duct connected to the spindle duct. keep in mind the suspension is at full droop here. the two line up pretty close when at ride height.



rotor and caliper reinstalled. pic from the back side. seals against the rotor hub pretty good.



wheel clearance at ride height. TONS o room. at least an inch everywhere. way better than i ever had in the camaro.


finished pics coming soon!

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Old 04-11-2017, 10:54 PM
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finally got some finished pics!











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Old 04-11-2017, 10:55 PM
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Well i finally got the Z06 to the track at TWS

i took it easy in the morning sessions, putting around in 4th and 5th. this meant coming out of the corners at around 2500-3000 rpm

the lack of feel i noticed on the street, sadly continued over on track. no feedback or feeling, and felt like i was on iRacing Sim. the Rival S's also didnt squeal but i probably wasn't at their limit, so i had no audible warning either. i have the square 10.5 X 18 Z06 wheels with 315 Rivals on.
the light weight steering on the street was different on track. it was much heavier, but still no feedback or car feeling.





even with short shifting at 6k i was hitting 150mph at the end of the front "straight". the camaro did 135. 140 on a perfect lap. it moved around alot at that speed, darting left and right moving half a lane easy and bouncy. not sure it was the alignment, the shocks, or simply the extra speed.




the lack of body roll and weight transfer was very apparent compared to the camaro. proby some of the lack of knowing what the car was doing feeling.







in the morning sessions i was running 2:09s running 4th and 5th. in the afternoon sessions i was running 3rd,4th, 5th and was running 2:05s. the camaro average lap time was 2:02s and my fastest lap times were 1:59s. the vette is 400lbs lighter, an extra 100hp and 315 tires vs 285s on the camaro. i thought even in this first shack down the vette might turn a faster lap but not the case. hopefully the lap times will come down once my confidence in the car goes up. i was noticeably rolling out of the throttle early, and rolling back in late in the videos.


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Old 04-11-2017, 10:55 PM
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unfortunately on the 3rd afternoon session it all came to an end with loud ticking. i pulled it into the pits and parked it until the next morning. went to tractor supply and bought a come-a-long and got her loaded on the trailer and headed home. by the time i looked down the oil pressure was lower but still good. still in the 30psi range but fluctuating.




heres the vid from the lap that the ticking happened.
at :44 the ticking starts
at 1:15 it gets worse
at 1:39 i get a misfire and finally hear the ticking....

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Old 04-11-2017, 10:56 PM
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Good News!
Tore into the motor starting with the passenger side valve cover and boom, the #1 exhaust rocker bolt was backed out!


appears to be no other collateral damage other than where the rocker hit the valve cover.


ended up taking out all 16 rocker bolts and locktighting them and re-torqueing to 22 ft lbs.

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Old 04-11-2017, 10:56 PM
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Took the Z out to a NCCC autocross in Waco at Baylor stadium.


unfortunatly on the first run my exhaust some how popped off both sides of the X pipe at the first set of cones. limped back to the pits and got it fixed missing the first and second runs.


get in line and started run #3, boom exhaust pops off again at gate 3. this time only one side. i move the clamps over the lip and get them to clamp down tight this time.


Finally get some runs in and in the afternoon post my fastest of the day a 47.8
the 1st and 2nd place points leaders were there running low 46s so i was happy. most of the feild was running low 50s. got to really push myself and the car for the first time. getting more comfortable with it. went over the limit a few times

my fastest run


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Old 04-12-2017, 01:00 AM
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What a great write up with great documentation and pics!!!
Thanks for taking the time to post up your build. I know it takes time to lay all the parts out and take good pics. Good Stuff!!!

Glad your up and Racing!!!

Let us know if you ever need us. Thank you again for your business!

http://www.americanheritageperformance.com/
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Old 04-12-2017, 07:54 AM
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I see why your posts are popular. For one they allow a relative corvette newby to understand some of the subtleties because you explain and show pics instead of assuming everybody knows all the details. Great stuff!

I would love it if you would post a link to some of the vendors you use when possible. For instance the brake cooling kit company. Easy to find with google but a link is even better.

Looking forward to seeing how you work out the vague handling.
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Old 04-12-2017, 11:18 AM
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Very nice post. I love the brake work, I will use this as a guide on my Z51 car to keep those brakes cool. And the lighted brake cooling inlets look fantastic.
However as soon as I read "rear down force time" I knew you would probably run into a slight issue. Read this one; https://www.corvetteforum.com/forums...aero-lift.html

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Old 04-12-2017, 12:21 PM
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Originally Posted by American Heritage View Post
What a great write up with great documentation and pics!!!
Thanks for taking the time to post up your build. I know it takes time to lay all the parts out and take good pics. Good Stuff!!!

Glad your up and Racing!!!

Let us know if you ever need us. Thank you again for your business!

http://www.americanheritageperformance.com/
Originally Posted by Erik L View Post
I see why your posts are popular. For one they allow a relative corvette newby to understand some of the subtleties because you explain and show pics instead of assuming everybody knows all the details. Great stuff!

I would love it if you would post a link to some of the vendors you use when possible. For instance the brake cooling kit company. Easy to find with google but a link is even better.

Looking forward to seeing how you work out the vague handling.
thanks guys, yeah it definatly takes time. its always nice when folks notice/appreciate the effort. but hopefully it will help someone else. thats how i learned was reading others experiences on great forums like CF.

here are the spindle ducts, i used there same brand on the Camaro
http://www.lapponline.com/index.php?...h=89_90_99_103
the fog light ducts sadly no longer appear to be on the site
http://www.lapponline.com/index.php?...roducts_id=222
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Old 04-12-2017, 12:41 PM
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Originally Posted by jaredtxrx View Post
Very nice post. I love the brake work, I will use this as a guide on my Z51 car to keep those brakes cool. And the lighted brake cooling inlets look fantastic.
However as soon as I read "rear down force time" I knew you would probably run into a slight issue. Read this one; https://www.corvetteforum.com/forums...aero-lift.html

thanks, i dont live far from ya.
yeah i recently removed the front air damn after reading that thread again last week.
see my update here:
https://www.corvetteforum.com/forums...post1594496135
Originally Posted by STANG KILLA SS View Post
well thought id add my experience to this thread.
after my first expereince in the z06 at TWS, i was noticing the car was dancing a TON on the front stretch (150-155mph) compared to my old 4th gen camaro. wheel was dancing in my hands and the car was jumping left to right as much as half a lane. and a bit of a floaty light feeling.
so after reading this thread i decided to try to remove the 3 peice air dam under the radiator.
the center section was a little tougher to remove than i was expecting. luckily i had experience with removing the bumper when i put the splitter/bumper reinforcement and fog ducts in.
so went back to TWS this weekend without it. and i believe i noticed a difference. it wasnt like i was glued to the track with splitters and canards, but i didnt feel as much of the light steering, dancing, etc. i think it helped.
im currently running a extended zr1 rear spoiler and no front splitter, just the stock z06 black plastic bumper extention.

i didnt pay as much attention to water and oil temps on my first visit so i cant really compare with and without air damn for cooling. i was also tip toeing around on my first visit, and was alot more comfortable and pushing really hard the second visit. so wouldnt be a fair comparison anyway.

outside temps were 85, water temps were getting to 240, and oil to 265, then i would take cool down laps.
my eventual plan is to make my own flat splitter. or get lazy and buy a cheap ebay zr1 splitter.
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