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Took the car to autocross for a shakedown
https://cimg0.ibsrv.net/gimg/www.rx7...72da4c68ce.jpg https://cimg1.ibsrv.net/gimg/www.rx7...5e3587af9a.jpg Made a quick turn down for it. Helped a lot. https://cimg2.ibsrv.net/gimg/www.rx7...8d0c5acc0e.jpg Unexpected win. The car was a rock star all day |
Is that a big magnet on the side of your car?
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Yup. Keeps the placards from coming off. They've lost some of their magnetism over the years.
Pics from the race have been posted. This sums up the day: https://cimg2.ibsrv.net/gimg/www.rx7...457e4078a3.jpg https://cimg3.ibsrv.net/gimg/www.rx7...0fab25d00d.jpg https://cimg4.ibsrv.net/gimg/www.rx7...7ff7ef82fd.jpg https://cimg6.ibsrv.net/gimg/www.rx7...d21ff1a1e3.jpg Good shot of how the tires deform but maintain contact patch. Bias Ply tiress are weird. <br/> |
How do you like the FC as an autocross platform? Would you do it differently if you could start over with it and do whatever you wanted?
I've been running an RX8 in stock classes for a while and am tempted to get into something a bit more purpose built, and an FC seems like a pretty obvious choice from the parts availability and being a good starting point to begin with. |
The car isn't built for autocross, so it's not fantastic at it - its set up for hillclimbs, which are basically tarmac rally.
I think as a platform the FC is a pretty good place to be. If I had had the budget to do so though I would have gone with an FD. Dual wishbones is much nicer than McStruts - but it's not a deal breaker by any means. I can't complain about the car's performance - I took 3rd yesterday autocrossing it - so 2 podiums in 2 events. First hillclimb for me will be Okemo in July. |
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what class are you autocrossing it in? I assume they're not using SCCA classing
I assume race = race tire? how do you like the EWP? I'm thinking of going that route... but it'll take significantly more doing on my car. |
Originally Posted by eage8
(Post 11927534)
what class are you autocrossing it in? I assume they're not using SCCA classing
I assume race = race tire? how do you like the EWP? I'm thinking of going that route... but it'll take significantly more doing on my car. We run SCCA classing, with like groups clumped together. Race is prepared and mod cars. I run on an FP pax. The EWP is most excellent, I've yet to even hit 200 degrees even autocrossing in 90 degree heat. |
So I decided to check my throttle travel and double check things were opening as they should. I've been limited to 40% throttle....
Time to schedule more dyno time! |
How much power did it make last time it was on the dyno?
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185whp ish with 0 timing and running pig rich
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Time for the rear bulkhead to go in:
https://cimg3.ibsrv.net/gimg/www.rx7...0e3879d735.jpg https://cimg4.ibsrv.net/gimg/www.rx7...e9c5d4689e.jpg https://cimg5.ibsrv.net/gimg/www.rx7...3ae33b19db.jpg https://cimg6.ibsrv.net/gimg/www.rx7...1c0965e53b.jpg https://cimg8.ibsrv.net/gimg/www.rx7...585070e17d.png https://cimg9.ibsrv.net/gimg/www.rx7...0f451249e3.jpg Messing with scoop ideas. I likely don't need anything this big (draggy) https://cimg0.ibsrv.net/gimg/www.rx7...4c86bd8b72.jpg |
Originally Posted by DaveEstey
(Post 11880486)
Racing season is approaching so it's time for me to get my ass in gear. Made a little trip to visit these guys for some suspension advice.
They haven't discovered me yet, but I fear my time among them is short. https://fbcdn-sphotos-h-a.akamaihd.n...1fe84aa5401377 Great guys. Super helpful. Nice prices on valved Billys! Time to throw some more money at this pig. https://fbcdn-sphotos-c-a.akamaihd.n...49d1f9b8954737 That checks off the ignition, and I finally decided to run my Weber 48 IDA rather than my Weber 48 DCOE, which meant I needed that nice shiny new manifold. Playing with unorthodox fuel cell placement since the radiator eats a lot of real estate in the back. It will be mounted about 5" up on the firewall and boxed in for safety reasons. Centralize all the weight. https://scontent.xx.fbcdn.net/hphoto...8c&oe=556FEB62 So now I'm waiting on AWR for my front strut housings and my tig-welding buddy to come down and burn in some 4130 Cro-Mo so I can mount the radiator and start plugging things into the car. And just because having time and money is over rated, we decided we want to go Lemons'ing. Time for a second RX7! Turns out it's not a GXL - it's a GTU! https://scontent.xx.fbcdn.net/hphoto...e7&oe=5583BEC6 |
Also I ran through the tech and classing documents, it seems my ITS prepared car will find a home in the class structure but how competitive are our cars for this sport? I'll be at Okemo to scope things out, we hope to be ready to take the hills for 2016.
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I converted one of the ignitors and use it as a signal generator for an MSD box, which uses a waste spark setup to fire the leading plugs (one coil each). The trailing coils run like normal from the distributor and share one coil. I don't see any reason why you couldn't run this setup with EFI, but also can't see why you WOULD haha. The fires up really easy though thanks to the powerful spark on the leads.
I like the carb, but man has it been a learning curve, mostly because I'm 32 and carbs haven't been part of my repertoire. I mainly chose it because it's way cheaper than a good EFI setup right now. I will be switching over to EFI eventually. RX7s can be very competitive at hillclimbs if prepared intelligently, which basically means tune for reliability over outright power and don't spring it super stiff. This is tarmac rally and it's not all glass smooth. |
Update on the car. I went out to MassTuning racewars saturday because SCCNH had been contracted to run an autocross course. For shits and giggles I ran in Max Effort class, which combined fastest 1/4 mile drag time and autocross time. I've never done drags in my life...
The car ran a 13.7 @100 with me not knowing wtf I'm doing and short shifting. That seems like a healthy number. I also got to take the car across the scales........ It weighs 2,290lbs with me in it. So 2,100lbs wet. That's 100lbs under my 2015 goal. The 2016 goal is 2,000lbs. |
Originally Posted by DaveEstey
(Post 11933204)
I converted one of the ignitors and use it as a signal generator for an MSD box, which uses a waste spark setup to fire the leading plugs (one coil each). The trailing coils run like normal from the distributor and share one coil. I don't see any reason why you couldn't run this setup with EFI, but also can't see why you WOULD haha. The fires up really easy though thanks to the powerful spark on the leads.
I like the carb, but man has it been a learning curve, mostly because I'm 32 and carbs haven't been part of my repertoire. I mainly chose it because it's way cheaper than a good EFI setup right now. I will be switching over to EFI eventually. RX7s can be very competitive at hillclimbs if prepared intelligently, which basically means tune for reliability over outright power and don't spring it super stiff. This is tarmac rally and it's not all glass smooth. |
Originally Posted by NorthernForestMotorsports
(Post 11933212)
Care to share your spring rate and length?
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Originally Posted by DaveEstey
(Post 11933204)
I like the carb, but man has it been a learning curve, mostly because I'm 32 and carbs haven't been part of my repertoire. I mainly chose it because it's way cheaper than a good EFI setup right now.
Originally Posted by DaveEstey
(Post 11933205)
The car ran a 13.7 @100 with me not knowing wtf I'm doing and short shifting. That seems like a healthy number.
I also got to take the car across the scales........ It weighs 2,290lbs with me in it. So 2,100lbs wet. That's 100lbs under my 2015 goal. The 2016 goal is 2,000lbs. |
Originally Posted by j9fd3s
(Post 11933547)
i did a 48IDA on my P port, mostly because i had it, and there was a learning curve, but once i got a handle on what does what, i really like the carb. it works way better than i would have thought possible, and i have no plans to go to efi anymore.
i'd be really happy with that, 13.7 is quick, and 2100lbs is LIGHT |
Originally Posted by DaveEstey
(Post 11922637)
Also started the process of making the car a solid color
https://cimg1.ibsrv.net/gimg/www.rx7...45ada3cd17.jpg |
Rustoleum Automotive Enamel
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Got busy last night on a new rear hatch setup with air intake. Should be less draggy than the previous design, as well as being stronger. Making use of the high pressure that forms at the top of the hatch.
https://cimg5.ibsrv.net/gimg/www.rx7...c58a357185.jpg https://cimg6.ibsrv.net/gimg/www.rx7...61f13b07b1.jpg https://cimg7.ibsrv.net/gimg/www.rx7...50375b791e.jpg https://cimg0.ibsrv.net/gimg/www.rx7...92e2872fd0.jpg https://cimg1.ibsrv.net/gimg/www.rx7...3a555c227f.jpg https://cimg2.ibsrv.net/gimg/www.rx7...ed26e70d48.jpg https://cimg3.ibsrv.net/gimg/www.rx7...5c8a2cc7ce.jpg Yes, the hatch can still open just like normal. I'll need to make two retainers for the side skirts inside as well as find a neater way of running my fuel cell vent line. I use these for all my lexan cutting. Mounted upside down in a carpenters vice and I use it like a band saw. Works AWESOME. 18 Gauge Sheet Metal Shear |
More Info on hill climb
How is hill climb scored? Is it the summation of all runs like rallyx? Or best time? Or are you offered only one timed run like stage rally?
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Originally Posted by NorthernForestMotorsports
(Post 11935848)
How is hill climb scored? Is it the summation of all runs like rallyx? Or best time? Or are you offered only one timed run like stage rally?
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