Re: Back into the big leagues: Project FRC
 

My car has slp maf, air filter, bbk throttle body, deleted cats and magna flow exhaust. I hope i can trap 110 mph and run some 12s this weekend. Just hope the clutch holds up. Lol. Going to bring a cooler full of ice and ice the intake manifold in the pits. I know the car has a 160 stat in it but the fans weren't adjust for it. If iam free that weekend maybe I will come out again. Pending on my clutch.

Re: Back into the big leagues: Project FRC
 

what clutch you get?

Re: Back into the big leagues: Project FRC
 

Good luck! What year is your car?

McLeod RST Twin Disc and McLeod flywheel (steel). Added ARP Flywheel bolts, new GM Slave cylinder and pilot bearing and a remote bleeder line. Should hold the power as the clutch is rated to "800hp", so I figure this will hold the end goal of 500/500 at the wheels. When I start to spray the motor years from now I'll have to send this in to get it upgraded to a RXT with Ceramic plates so it'll hold 1k hp as I don't think the organic material will like a nitrous spray; I'll cross that bridge when I get there.

Re: Back into the big leagues: Project FRC
 

Cool. What remote bleeder did u end up grabbing? I'm running the one from Speedway.

Re: Back into the big leagues: Project FRC
 

Tick Performance.

Everything *should* be here for a August 19th evening - 20th install. I figure the girlfriend flies to Grenada that day so I need something to keep my mind off not seeing her for the next 4 months (last time).

End goal for the season is to crack a 12.5. At 2500rpm I didn't even have enough clutch to get the tires to spin. I could dump it and get them to hop (did that once, whoops), otherwise if I fed it any clutch at all they would grip and I would roll out. As my girlfriend said "you leave really slow"
:rock2:

Launching a RWD manual car is COMPLETELY different than my grip it and rip it days of AWD turbo cars.

Re: Back into the big leagues: Project FRC
 

Reviewed logs. After looking at the torque curve versus the mph plot over engine speed, I am very confident the clutch was slipping the entire time. Boost is timing advance in power graph. The line that drops down like a spoon is an exaggerated torque curve. The other is mph versus RPM, it should be linear, not jagged like it is.

:rollinglaugh:

I can't wait to see how much power it makes with the clutch in it, haha. I wouldn't be surprised if it makes 350/350.


Video.
https://youtu.be/M69zeqWzvbw

Re: Back into the big leagues: Project FRC
 

Mine is a 99.

Re: Back into the big leagues: Project FRC
 

Awesome! Good luck and lmk if you need a tune ;)

Re: Back into the big leagues: Project FRC
 

Are you signed up for the "Team Tick" sponsorship savings program? If not you should see if you can. Some good savings on some stuff. I'm signed up!!

Re: Back into the big leagues: Project FRC
 

Im happy with my Monster LT1 twin disk clutch and standard steel flywheel and it looks like its cheaper than the RST. Flywheel comes with it.

http://monsterclutches.com/c5-corvet...reet-c5-clutch

Nice runs at the track!

Re: Back into the big leagues: Project FRC
 

Thanks! I was going monster but Amazon has the rst for $675 and flywheel for $281.

Re: Back into the big leagues: Project FRC
 

Well my Sunday and next week are going to be busy.

Clutch and goodies are here. A "while I'm at it" bug bit me hard on this one, so I'll be designing and fabricating (with the help of a good friend) a "anti-wheel hop" differential brace using SS rods and heim rod ends as well as tying together the transmission and differential. That way when I put the entire assembly back up I won't have to touch it again until I build a differential and am really running sticky tires.

Progress and photos to come this weekend as I tear out the entire drivetrain.
:pc:

Re: Back into the big leagues: Project FRC
 

It's been slow going but making progress.

Flywheel was in on Monday with long tubes still in place. :boxing:
https://scontent-ort2-1.xx.fbcdn.net...ff&oe=5A275542
Quite a pain to get it past the long tubes, yes they are unbolted but it is just that tight in there.
Clutch was installed next.
First disc installed:
https://scontent-ort2-1.xx.fbcdn.net...0a&oe=5A156D1D
Using the 2nd disc to ensure everything aligns on torque tube
https://scontent-ort2-1.xx.fbcdn.net...e5&oe=5A233F28

Twin disc in and torqued:
https://scontent-ort2-1.xx.fbcdn.net...32&oe=5A186037

And now the current state. Waiting on some heim rods to be welded up for my custom transmission/differential brace as well as my anti-wheel hop traction setup:
https://scontent-ort2-1.xx.fbcdn.net...c9&oe=5A2D2CFA

Otherwise drivetrain is ready to go back home. I need to install torque tube + transmission + differential in one pass, subframe in a 2nd pass:
https://scontent-ort2-1.xx.fbcdn.net...f0&oe=5A356332

Hope to have the fabrication parts done tonight and maybe even the drivetrain in and installed.

Re: Back into the big leagues: Project FRC
 

Looking pretty good. We might have meet up and do some rolls.... lol

Re: Back into the big leagues: Project FRC
 

I like that idea!

Re: Back into the big leagues: Project FRC
 

Man, I hope I never have to tear into my drivetrain, but I'm sure the bug will bite me to upgrade something as well.

Re: Back into the big leagues: Project FRC
 

Let me know when that roll action happens!

Re: Back into the big leagues: Project FRC
 

Doing some serious work this weekend I saw!

Re: Back into the big leagues: Project FRC
 

Clutch is in and almost broken in. Had to pull apart some of the car again to re-balance it externally. A little math and trial and error and the car is mostly vibration free. Slight vibrations that are from the solid differential setup around 1750 rpm for a brief window (and then around 650rpm, but doesn't do it again at 2850 or 3950 so its a resonance issue, not clutch).

Re: Back into the big leagues: Project FRC
 

Time for some fun runs

Re: Back into the big leagues: Project FRC
 

Went back to the track this weekend. Terrible weather for drag racing, but still productive.

Density Altitude was 3056.9
82.9 Degree air temp
13.8 mph cross wind
49.4% humidity
62 degree dew point.

Everyone I talked too was down 2-3mph from normal. Still set a personal best, but more to go on it.
1.939 60'
5.431 330'
8.262 1/8
87.33 1/8 mph
10.687 1000'
12.733 1/4
110.25 1/4 mph

Not setting the world on fire, but making progress. I'll upload a video with a graph later. Next step is renting the dyno for a few hours to validate the tune and then getting some drag radials on this beast. I think I can still get this car down to low 12's with tires and tuning.

Next run I got eliminated. Improved the 60' to 1.931 and ran a 12.831 @ 109.91mph. The rest of the day I ran 12.99 two times and 13.2 two times. It is all in the launch with these cars. I did break a 2.0 60' 3 times. (1.995, 1.939, 1.931).

Next time I get to go will be late October. Hoping for cooler weather and stickier tires for a final hurrah of 2017.

Re: Back into the big leagues: Project FRC
 

Some sticky tires you should be able to get into the low 12s. Street tires shows who can drive a car...... good times. You just barely beat my best time.

Re: Back into the big leagues: Project FRC
 

Healthy competition for "neighbors". Time for you to go back and best me.

I hope with a better DA and a stickier tire I can crack 12.3 or better. I REALLY want to leave it bolt on until I go 11.xx, and I am stubborn enough to probably just do that.

Launching on street tires is a PITA compared to the AWD grip it and rip it days. I've learned that for my car it likes a burnout, likes about 26psi in the rear, and I need to leave at 3k. A slip with a progressive clutch feed out and throttle feed in to keep the rear wheels rolling and the noise pointed is good.

I need to line up some tuning gigs to pay for a rear tire setup, otherwise I'll be back out there one last crack, if good weather, in October, on these tires.

Re: Back into the big leagues: Project FRC
 

Lol I might go again this year. Taking the bike on the 7th to rockfalls for a test day. Trying to get that thing ironed out for next year. If all goes good I will take the vette out next time I can. See if I can't beat your time. Would be one hell of a heads up race.......

Re: Back into the big leagues: Project FRC
 

Well I never made it back to the drag strip. I think with some additional tweaking and a better launch on a cooler day I can break 12.5 in this car. Will find out in the spring.

Final tally came back for MOWOG series.

http://forum.mnautox.com/results/mna..._Standings.htm

I ended up 10th overall in the Z class (of 48 entries). The car moved from STU to CAM-S mid way through the season, and I think with some off season tweaks it will be competitive.

Driver of the year I ended up in 44th of 330. There are a lot of people that only went once. Overall it was a good first full season of autocross, but I have learning to do.

http://forum.mnautox.com/results/mna...7_MAC_DOTY.htm


In reviewing the year in the vehicle I am pretty happy with it's performance. A few cosmetic things I want to clean up over the winter, but I think next season will be focusing on improving the nut behind the wheel.

I will most likely keep the staggered 17/18 setup on the corvette and try to get the maximum size tire I can get on there that match. Hankook RS4 seem to fit that bill.

I ran:
Bridgestone RE-71R
Sizes:
245/40/17 Front
275/35/18 Rear
Width:
8.6" Front
10" Rear

Hankook Ventus RS-4:
Sizes:
255/40/17 Front
285/35/18 Rear
Width:
9.4" Front
10.6" Rear
(or go with a 295/40/18 rear and have 11" rear width)

I think the extra width will help with cornering grip. I've thought about going the next size up for RE-71r's, but they run a bit smaller than the RS4's and I cannot find any first hand comparisons between RE-71's and RS4's. It really sucks trying to find tires in the 17/18 staggered sizes, maybe something new will come down the pipeline this winter that meets the criteria:

• <$1000 a set
• >200 tread wear
• Ability to street drive and get over 6000 street miles
• Keep the diameters so the fronts are smaller than the rear

So beyond tires I plan on entertaining a few other ideas:
Power:
Porting the LS2 manifold more
Porting the throttle body more
Swapping out the 75mm MAF for a 85mm MAF
Dyno time

If I can shake down a money tree, I'll add a mild cam/spring setup, that is all it needs for power until the driver gets better.

Reliability:
Cooling: I'd like to add an oil cooler and brake cooling ducts to the front and rear calipers

Aero:
I think a rear wing within rules may help with downforce. Not at autocross speeds but on the road course. I plan to try my hand at HPDE with this car next season. There has been a lot of research on this and I believe that if I add a spoiler with a 8" or smaller chord length I won't need a front chin spoiler, which is good as adding one of those is aesthetically pleasing but a pain in the ass when you have a bottom feeder car.

Interior:
The factory seats suck. Aftermarket options seem to suck. Still researching this, I really don't want to add weight, I want to stay FIA complaint, I don't want to ruin street manners, and I'd like to add a harness to keep me bucked in. More research required on this setup.

Driver:
The most important mod. Ryan beat me all year. Yes Ryan has been doing this longer, but that shows that the driver/owner isn't as capable as the car is. More training needed for this guy.

Re: Back into the big leagues: Project FRC
 

Bringing this back from the dead.

Well I am settled in now in Elkhart, Texas but still plan on hanging out here. The corvette has developed a slight coolant leak at 86k miles on it...so might as well tear it apart.

Going head/cam on it here and just got done spending all of the money :(. I hope it is all worth it.

Spent a good 6 months debating the future of this build, but driving it around on the back roads here and looking at my track opportunities reinforces my love for drag racing and want to get it on the road course. Autocross is fun, but it isn't as available where I live now; so might as well upgrade the car.

Next week I should have PRC 225 As cast heads. Milled them down to 60cc chamber should give me around a 10.9:1 compression ratio (was at 10.0:1) I was debating of going down to 58cc chamber, but this way if the stock .051" GM MLS gaskets give me troubles when I add nitrous, I can go to a .040" cometic and be in around 11-11.2:1 all in. Will see how it does (hoping for sub 11.4's) on the head/cam before talking spray. That and 3.90's are probably next year.

Cam is a TSP 228/232 112+2 .600/.600. Should lope good and provide decent power. I don't really care about numbers, but anything over 420 should be great, I've seen some setups put down as much as 480!

Add in ARP everything and new gaskets/new SFI approved dampener and a CHE Trunnion bushing upgrade; well I only hope to do this once. Going with a LS6 oil pump and rollmaster ls2 single roller aftermarket timing chain setup.

Stay tuned :)

Re: Back into the big leagues: Project FRC
 

Sounds like a good head cam combo. Last year I bought another vette that had a 408 ls made 530 whp and was a blast to drive. I am sure you will enjoy the extra rpm and added hp.

Re: Back into the big leagues: Project FRC
 

That's awesome!

Re: Back into the big leagues: Project FRC
 

I miss my Vette, I'll have to get another. They sound so good.

Re: Back into the big leagues: Project FRC
 

They do sound great.

I really wanted a C6 Z06. Hopefully with this package the performance will be closer to one of those (stock versus modified I know, but work with what you got).

That's really the end game. ~450rwhp on pump, broad power range, mid to low 11's in the 1/4 mile, great handling, 28+ MPG.

Will see come spring. Parts are all coming this week.

Re: Back into the big leagues: Project FRC
 

That sounds perfect.

Re: Back into the big leagues: Project FRC
 

Going to be a busy weekend. All parts but the throttle body are here.
https://scontent-dfw5-2.xx.fbcdn.net...53&oe=5D29111C

Going to be a busy weekend!

Re: Back into the big leagues: Project FRC
 

Have fun!

Re: Back into the big leagues: Project FRC
 

Modifications:
PRC As Cast 225 heads with Hollow valves. Standard .660" Dual Valve Spring with Titanium retainer setup. -60cc chambers for a 10.9:1 or so target compression ratio
GM MLS Head gaskets with ARP Studs
228/232 TSP Cam on a 112
Dorman LS2 Manifold with 90MM LS2 throttle Body
85MM Maf, Blackwing intake, air bridge
XS Power 1-7/8" Longtubes, Catted x-pipe, Corsa Catback
HP tuners by me
93 Octane
44LB Trickflow (Accel) injectors (59% duty cycle)
NGK TR55 spark plugs, MSD Wires
Summit Bracket Racer Harmonic Balancer
RST Twin Disc Clutch with Steel Flywheel
Stock 1999 LS1 Shortblock with 87k on it. After the cam install cranking compression is 220-230 each hole so it is right around 11.0 comp ratio.

Smoothing of zero below. Smoothing of 3 put down 443-444, so it is consistent.


Street tune was 440hp and first pull. 445 was 3rd pull after adding a degree of timing and flattening the AFR. From here I switched from straight VE (with MAF disabled but installed) to a blend of tuning of MAF and VE. Another degree was attempted, minimal or no gain and picked up KR. All pulls in 4th gear.
https://cimg0.ibsrv.net/gimg/www.cor...3284d79a8c.jpg

This is the before: Good gains.
https://cimg5.ibsrv.net/gimg/www.cor...0e90a9226d.jpg
1999 Factory LS1 Longblock with all the bolt on's above except the following:



78MM TB
36LB GTP Injectors


Same car summer before. Flex Fuel Tune (04 Tahoe PCM) running around E40. Airflow limited, not timing, as it made nearly this on pump gas a month prior on a different dyno. Car went 12.73@110.5 on this setup, 1.93x 60' street tires, 3200DA.




Overall I am pretty happy with the results. Lost nothing down low. Car pulls from idle (825rpm) without needing throttle on the twin disc. Pulls in 6th gear from 1400rpm with using the cruise control.

Welcome to input and questions/comments, just trying to document the journey. Next up is to pin down the starter issues and to put on the Hoosier QTP's and hit the track. Then probably a dry nitrous setup as I have plenty of injector left, will start small and keep pilling it until I hit my goal of deep and consistent 10's or maybe a 9.9999999999 with a tailwind and probably a 150 shot. I'd love 10's on just this setup, just have to go to the track and see where it is now.

Thanks for stopping by!

Re: Back into the big leagues: Project FRC
 

I likey!
More updates, tracks have to be open in your area!?

Re: Back into the big leagues: Project FRC
 

I have my hoosier QTP's on the Camaro 16" wheels?

Tracks are open, just been busy. I am putting in a new starter as the last one failed on the dyno. Working on shimming that properly this week and adding additional shielding. Then hopefully turn on the 02 Sensors and finalizing the tune.

On the fence if I go to the track and walk it out to see what it does, or if I pull the driveline and upgrade it. Decisions decisions.

Re: Back into the big leagues: Project FRC
 

http://www.youtube.com/watch?v=https://youtu.be/pxjZM-d_ShI&hd=1

Re: Back into the big leagues: Project FRC
 

+100whp, nice!

Re: Back into the big leagues: Project FRC
 

I've hit a snag.

Went to replace the starter (and shim it properly as I kept thinking something was wrong besides heat).

Found the attached image.

So that's neat. I figured when the injector stuck open (old 36lb gtp injector) and hydrolocked the motor, the kick back destroyed the tooth.

Thankfully McLeod can rebuild the flywheel for cheap ($50). Of course to do this I get to pull all of the stock drivetrain out.

So now the next phase begins, planning the future of the build, as putting the inferior parts back in a 2nd time pains my heart knowing I can't launch on it.

I briefly thought about selling the car after fixing this last issue and starting with a different platform, but I really like this car.

So I think I'll be tossing in all C6Z stuff (Differential, transmission) and a upgraded 2001-14 corvette 12mm torque tube.

This combo *should* be good to around 600-650hp/tq or so, more importantly allow me to try to get those low 60's. In asking around most guys are capable of cutting 1.5's no sweat, 1.4's with practice without breaking.

Yes I do plan on spraying nitrous to get to the limit of the drivetrain, why wouldn't I?
:drive1:

Re: Back into the big leagues: Project FRC
 

what platform would you go to?
I'm interested to see what effect the C8 has on older model prices.