STANG KILLA goes "racin" Part 2
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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. Attachment 48358958 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. http://www.improvedracing.com/images...M-203_4_lg.jpg first up was to drop the cradle. being Magnesium it didnt weigh nothing. could carry it with one hand! Attachment 48358959 Attachment 48358960 pan removed Attachment 48358961 Attachment 48358962 pan cleaned and baffle bolted in. not a hard job in itself, just getting to it was the chore. Attachment 48358963 |
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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. Attachment 48358954 removed the top black plastic part. you can see the transfer tube and the port in sticks into on the left. Attachment 48358955 the baffle Attachment 48358956 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. Attachment 48358957 |
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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. :( Attachment 48358950 so time to pull them. Intake off Attachment 48358951 heads and headers off Attachment 48358952 Attachment 48358953 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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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!
Attachment 48358947 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. Attachment 48358948 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! Attachment 48358949 also found TSP 3/8" chromoly pushrods in the car |
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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. Attachment 48358941 Attachment 48358942 Attachment 48358943 Attachment 48358944 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. http://nebula.wsimg.com/6420877d4f62...&alloworigin=1 heads back on Attachment 48358945 added .025 shorter pushrods to compensate for head mill and put intake and valve covers back on. love the look! Attachment 48358946 first fire up |
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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 Attachment 48358931 drilling brand new car #nervous Attachment 48358932 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. Attachment 48358933 test fit Attachment 48358934 Done! Attachment 48358935 Attachment 48358936 dat ass Attachment 48358937 Attachment 48358938 Attachment 48358939 Attachment 48358940 |
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wheels and tires.
Square setup 4x 18 x 10.5 315/30/18 Rival S Attachment 48358926 Attachment 48358927 Attachment 48358928 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. Attachment 48358929 bingo Attachment 48358930 |
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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 Attachment 48358919 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... Attachment 48358920 marked hole locations in bumper bar Attachment 48358921 drilled view from inside bumper bar Attachment 48358922 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. Attachment 48358923 Attachment 48358924 cut grill for tow hook Attachment 48358925 |
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brake cooling time!
I started with Lambert/Quantum Fog light ducts and some race mesh Attachment 48358909 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. Attachment 48358910 ducts and mesh in Attachment 48358911 lights test Attachment 48358912 Attachment 48358913 surprisingly bright Attachment 48358914 bumper/splitter re-enforcement installed Attachment 48358915 ducts on fog ducts, and grill misc stuff reinstalled Attachment 48358916 factory under bumper duct inlet, i cut off the tube 1" inside of the wheel well (inside bumper) Attachment 48358917 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. Attachment 48358918 after 4-5 test fits the bumper is back on finally! |
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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. Attachment 48358902 bracket dremeled off Attachment 48358903 upgraded the factory padlets to 1 piece hawks. had great luck with these on the camaro on track. Attachment 48358904 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. Attachment 48358905 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. Attachment 48358906 rotor and caliper reinstalled. pic from the back side. seals against the rotor hub pretty good. Attachment 48358907 wheel clearance at ride height. TONS o room. at least an inch everywhere. way better than i ever had in the camaro. Attachment 48358908 finished pics coming soon! |
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finally got some finished pics!
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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. Attachment 48358889 Attachment 48358890 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. Attachment 48358891 Attachment 48358892 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. Attachment 48358893 Attachment 48358894 Attachment 48358895 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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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.
Attachment 48358888 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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Good News!
Tore into the motor starting with the passenger side valve cover and boom, the #1 exhaust rocker bolt was backed out! Attachment 48358886 appears to be no other collateral damage other than where the rocker hit the valve cover. Attachment 48358887 ended up taking out all 16 rocker bolts and locktighting them and re-torqueing to 22 ft lbs. |
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Took the Z out to a NCCC autocross in Waco at Baylor stadium.
Attachment 48358882 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. Attachment 48358883 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. Attachment 48358884 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 :D my fastest run Attachment 48358885 |
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/ |
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. |
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 |
Originally Posted by American Heritage
(Post 1594509880)
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
(Post 1594510467)
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. 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 |
Originally Posted by jaredtxrx
(Post 1594511710)
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
(Post 1594496135)
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. |
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