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Discussion in 'Project Progress' started by SR79, Feb 21, 2008.
fatnlow they have these kind of events at the Montgomery drag stip.
Thinking about maybe putting a pair of resonators before them should the need arise. The bucket list includes a trip to Laguna Seca, which has a 92 dB limit, so it will be a concern someday
You definitely should, it's an absolute blast!
My local dirt track has the guys running mufflers now. It a little thing not much bigger then a coffee can.
I'll have to watch the schedule. I've been there for testntune a couple of times.
EDit: June 13 there is going to be an event.
It's Monday, and it feels like a good time for an update, so here we go!
So, what's new? In our bid to never take the car to an event the same way twice, we've made another gear change!
Leading up to, and during the Optima event, we had a ridiculously loud gear whine coming from somewhere in the drivetrain (you can hear it in the road course video from Optima). We had assumed it was coming from the transmission based on the nature of it - really only started in 3rd gear, didn't come in and out with loading and unloading while driving.
It turned out to be the rear end. The 4.11s we had installed last are over 20 years old, and have been installed in at least 4 different rear ends, including the car one other time, and my truck, and had been setup/torn down countless times.
Long story short, they were beyond their useful life, and had begun the gradual process of self-digestion. Lash had opened up substantially, and gear marking compound barely produced a pattern on either side of the tooth. The housing was also filled with glitter. Close call..
New Richmond 3.70s are in now, opening up a bit more top-end in 1st and 2nd gear (from 46 up to 51 in first, and 70 up to 78 mph in 2nd). This should make things better both on tight Optima/Goodguys type courses and our usual free-flowing Texas region layouts.
And, you no longer need earplugs going down the road. Win-win.
While that was going on, I also addressed an unfinished item from the original thrash earlier this year - getting some paint on the non-stainless bits of the exhaust. The tips were finish welded, and VHT flat black went on all the mild steel parts. Minor issue, but one that had been bugging me nonetheless.
Love that discolored stainless..
Our other project for the year has been a new shop, as we outgrew our current setup a while ago. Rocked right along on it the past few weekends since it finally quit raining, and should be able to start doing finish work inside over the next few weeks. Super excited to get going in there.
Finally, this past weekend we got ready for the SCCA Texas Region event this weekend (happy Father's Day dad!).
It was fun running the car with the full Optima decal pack on it for an event or two, but the time had come for it to go. Can't just throw it away, though, so we cut down some scrap splash board and made two garage art pieces.
Back rolling low-key. Well, as low-key as you can be in such a car...
After a quick wash, we're all set to go get it dirty again. Anxious to see how the new gears work - still feels plenty frisky running down the road, hopefully that will translate on track.
SCCA Event 3 Recap
Sunday was fun, but kind of a mixed bag. We had some competition in CAM-T this time, which was cool. 4 car field consisting of us, a 68 Camaro prepped by Dusold Designs and packed to the gills with go-fast parts, a Falcon, and a Model T (this class really makes no sense when you break it down :confused18: )
I also managed a lucky draw on my run group, and got pretty much a fully dry session between showers.
Managed to get the win by a little over a second, and took fastest CAM time of the day with the big caveat that the C guys got rained/lightninged out after their 1st or 2nd runs.
Not as good news: the 3.70s made for several awkward spots speed-wise, as you'll see in the video. With an overly fat carburetor that still had a cool weather tune in it, there were multiple spots that were too fast for 1st, but way down low out of the 'happy range' in 2nd.
My driving in it is still pretty sloppy, but forgoing smooth and steady for the dive bomb/stab and pray method seems to be the way to go with the current combo. Here's video of the quickest run..
love that sound
Time for a little bit of an update, I guess. The car has been pretty well static aside from the gear change back in June, which leaves the work to be done on my end.
We're a year in to running the car, and I've been sneaking up on finding the limits while mostly leaving all the settings alone.
This event was also notable because it was the first one I've driven the car too, which felt pretty good aside from forgetting to back the shocks down for the trip over.
Ran into Chris and his wicked Maverick on the way - I call this one "Meanwhile, in Texas"
My dad drove the Z again, made for a good photo op while waiting for trophies
My first cone!
The last couple trips I wanted to focus on reigning everything in a bit. In the last videos I posted, it was a spray and pray, dive bomb everything and figure it out later approach. This time the focus was to keep speeds in check and be tighter on the cones.
I managed to be much more controlled in most areas, and way tighter on the cones - to the point of only having one clean run out of 5 :knock: This one, incidentally the first, was thankfully enough for the class win and top CAM time, but 28th overall PAX (class and PAX results). Progress, but I was still pretty frustrated with the cones.
A brief intermission..
Fast forward to two weeks ago, and a back to back weekend between two different clubs, NTAXS and Equipe Rapide. In late July. In Texas.
NTAXS runs a slightly different format, with each car taking all their runs of the session back to back. This leaves only a couple of minutes between each, which isn't very Camaro friendly even in moderate weather. Enter the Z!
This paid off in two ways, giving me a chance to drive it in anger again for the first time in months, and to instruct my dad in back to back sessions with us co-driving. He's coming along great over the last few events, and really having a blast. It's been good fun watching him progress, and has helped my driving as well.
His best run:
And mine (where's my 200 extra horsepower, 50mm more tire, and 3.5 degrees of camber up front?!)
Even on worn out tires and bone stock suspension, it's such a fun car to throw around. We ended up the day 3rd (I coned away a time good enough for 2nd, ugh) and 11th in a pretty big class of 24.
Back to regularly scheduled programming
The next day it was back to the big lot at Lone Star Park for some wide open, gravel slinging, hill climbing fun. Already a little beat from the heat the day before, I trudged out bright and early Sunday morning (this time I remembered to back the shocks off 3 clicks all around, at least).
I was sweating before I even got to the track, and things just got hotter from there.
Falken - tires so fast you have to tape the numbers on!
The course was big, and fast, with an optional crossover that you could really fly into and out of.
The first run cost me a 6 and a CAM class magnet off the driver's side, both of which were returned, thankfully. I brought a new run log sheet to keep track of tire and brake temps, but there just wasn't enough time between runs to keep this up after the first since I was by myself.
What I did see was pretty promising, with only a few degrees difference from the outside to the inside of the fronts, and brake temps being pretty close front to rear as well. Not bad for a complete shot in the dark on alignment, and word of mouth from Mike at Wilwood on tire pressure settings.
With no support car, packing got a little creative. Here's the number carriage system - worked out well
Due to some confusion during the event on classing, I ended up with the win in CAM-C, rather than CAM-T, over Aaron Sockwell in the DuSold 6G Mustang, with the only clean run I had in the morning.
While the grip isn't great, and the gravel is wreaking total havoc on our paint, I LOVE this place. Nothing like topping the hill at nearly 70 mph then jamming the brakes into a deeply downhill off-camber turn. Not your typical autocross, for sure.
This was a fun trip, but man was I beat by the time I got home. The car did great, handling the heat like a champ (it was 114 in the driver's seat when I climbed in to drive home).
Maintenance and other miscellany
After 2/3rds of a season, I'm extremely happy with the Falkens. We've run a lot, including USCA, and a decent amount of street driving, and they still look good and fat all around.
That being said, the, uh, rears are showing a bit more wear than the fronts (go figure?).
Got them rotated front to rear, and did a general once-over to make sure nothing looks like it's going to fall off. Only found one issue, which has plagued us since we started all this last year.
It looks like our plans for the winter are going to include building a floater 9-inch for it. It has eaten regular Timken bearings (literally spit the inside out of one), and is now leaking around a Moser o-ring'd bearing. Frustrating, but nothing we can't fix.
If anyone has an idea of what we're missing that is simpler than building a new rear end, I'm all ears.
Finally, two of our local clubs have a contingency program with Discount Tire. I got signed up at the last event and hastily threw on the stickers before running, so they needed to be redone. Looking more racey now, but.. I like a chance at free tires, and we love Discount either way, so I'm happy to run them.
Boy, this got long again. Next up for us is another trip to Lone Star Park, at an event originally billed as the North Texas Camaro Club autocross, but is now a come one, come all and have fun type deal. Excited to fly the Camaro flag and try and get after some very fast drivers in a range of cars.
Big time thanks to Greg, a local 2G Trans Am guy, for putting everything together! Should be a lot of runs, a lot of friends, and a great opportunity for testing and tuning.
And drinking water. Lots, and lots of water.
August autocross in Texas, and other signs you may be a masochist
A little update from the weekend. I've been fighting with a little hesitation coming off the corners since it's been hot. Coming into the year, the carburetor still had the same basic setup from our drag racing stuff, and from much cooler weather at that. About a month ago, I stepped down a bit on the jets front and rear, and it was happier but still not all the way there.
The biggest problem was a little hesitation out of corners, particularly when just hammering it at lower RPM. The first thing on the list was squirter size, as we were pretty sure it was still rich and just loading it up at the hit. Stepped down from a 42 to a 35 up front, and things came ALIVE.
It was obvious from the first hit of the throttle that we were much, much happier.
Since putting the 315s on, it's never wanted to really just lay waste to the tires, but it was doing it. Hazing them at 60+ mph in 2nd gear? No problem at all. All this, combined with a lack of food and sleep, and it being unmercifully hot (driver excuse generator ACTIVATE!), made for an interesting first session, as shown above.
At least it puts on a show?
All in all, we were able to get what we needed to accomplished. The bearing leak on the rear end has gotten bad again, so it looks like new axles and a tapered roller bearing retrofit is next on the list. It's always something..
Glad to see somebody show the some "oops" and not just the good runs! haha If you don't lose it once in a while you're not pushing it hard enough, right?