CMC140's car picked up another 5k miles so far and turned 25 years old last october -- and it is going strong. I have to say this car is a joy to drive.
Nothing much is different with the appearance.. it has a Lexan hatch and I swapped the NRG wing for a DF wing. Eventually it will get a bigger set of 225/40 and 275/35 tires when these wear out. But Mcdork-san made it so close to ideal for me that it will stay how it is.
Here are some pics gathered from different threads on Prime. (If you took any of these thanks! and let me know if you need a photo credit).
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The car came to me tuned for 93 octane which we can't get here. So I would buy a few $10 gallons of 100oct race gas until my wallet screamed for mercy, and then fill up the rest with cheap AZ piss gas. But it was not happy -- weird tip-in throttle issues meant you didn't really know what you were going to get mid-corner, along with the tendency to stall above 5000' elevation, plus a rough idle.
I wondered if it was just the way the engine was in this trim.. and even considered going with a high-compression NA stroker since throttle response is one of the things that matter most to me. Actually I still might, ideally with ITBs to sweeten the deal, but with no E85 on my favorite longer drives, I am told that it wouldn't (safely) handle a 12:1 compression on 50% ethanol, and then even mid-to-high 11CRs on 91 pump could be out of the question. Chris at SoS talked a lot of sense about just optimizing what I have, so I took it there and got it refreshed with an AEM Infinity and Flex Fuel kit. Here is the dyno sheet on E85:
Note the ~360tq (at the crank), with 300ft/lbs already on tap at 3000rpm. And then with the power building all the way to 8000, it feels pretty dang frisky -- although the word to describe it is
linear. My target weight will be 2700lb all gassed up (more to come on the weight loss mods).
The current build peppered with whatever typos I've made:
Engine:
Original C30A (unopened block w/ unmodified bottom end, stock compression).
Comptech supercharger with a Whipple 2.3L compressor. 86mm pulley (~10psi boost). Dayco Poly-Rib belt #5050745.
Tuned by Tony at UMS 6/15. 443whp/318tq with 85% ethanol on Dynapack (~500bhp/360tq)
Driving Ambition aftercooler with front mounted water to air heat exchanger.
Science of Speed big bore throttle body.
AEM Infinity-6 ECU.
SOS Infinity-6 harness kit.
AEM universal inline wideband UEGO controller.
SOS E85 FlexFuel kit.
Comptech air box lower half, modified Comptech top half for aftercooler, and Dali Racing intake scoop.
Injector Dynamics 1000cc injectors.
AEM oil and fuel pressure sensor kits.
AEM water, coolant and oil temp sensor kit.
AEM Open Element air intake temp sensor kit.
Aeromotive 340lph in tank fuel pump.
Toda billet oil pump gear.
ATI Super Damper.
SOS baffled oil pan.
SOS billet cam plugs.
STMPO billet coolant tank.
Koyo radiator. Dali dual fans.
RM Racing/Billy Boat headers with Jet Hot coating inside & out, Pride 300 cell high-flow cats, Fujitsobo Super Ti exhaust.
Drivetrain:
NA2 E61 6sp transmission (installed 5/15 at 60k mi, had 2k total mi previously).
OS Giken Superlock 1.5 way LSD, 4.62 final drive. 80mph = 3400rpm on 19" 275/30 rear tires.
RPS clutch with lightened flywheel.
Comptech clutch damper delete with Dali braided lines.
Comptech short shift kit.
So far I have had just monitored AFRs and boost on analog gauges. Now with sensors out the wazzoo I am looking forward to logging IATs and other parameters with a Gaugeart running off the AEM. I will report back here especially about the much-discussed heat soak issues.
Many thanks to
CMC140
plus Jeff & Chris @SoS
and Tony who did the brilliant tune at UMS.