What the Mazda RX-8 should have been (new autocross car build) - Page 19

lip277 · 02-22-2019, 10:50 PM

Awesome....

Question -why was the temp above C to begin with? Sensor issues? Or...???

*clyde* · 02-23-2019, 02:06 AM

Quote:

Originally Posted by lip277

Awesome....

Question -why was the temp above C to begin with? Sensor issues? Or...???

Cuz dat shyt's HAWT!

John V · 02-23-2019, 07:05 AM

Quote:

Originally Posted by lip277

Awesome....

Question -why was the temp above C to begin with? Sensor issues? Or...???

I'm actually not sure. There seems to be some canbus weirdness when the ECU is first configured.

kognito · 02-23-2019, 09:53 AM

Quote:

Originally Posted by lip277

Awesome....

Question -why was the temp above C to begin with? Sensor issues? Or...???

But it dropped down after the engine started. Might have been old data stored in the register(s) of the ECM

John V · 02-23-2019, 06:08 PM

The ECU config doesn't load until you cycle the key. Until then things are in an indeterminate state

JST · 02-23-2019, 07:02 PM

Schroedinger’s ECU.

ff · 02-24-2019, 09:36 AM

Nice!

*Plaz* · 03-07-2019, 02:56 PM

Quote:

Originally Posted by JST

Schroedinger’s ECU.

John V · 03-02-2019, 05:02 PM

Got some work done today. I made a couple bosses to mount my splitter support rods to the splitter.

I took an idea from Robert Thorne's SSM car to use gas struts to support the splitter, so it can deflect upwards when it hits the ground. The bosses above mate to a pair of clevises which screw to the struts.

I made a tab out of some box section steel and welded it to the crash bar. The cylinders are extended using chromoly rods that I tapped and threaded to a rod end.

With the cylinders extended the splitter is level with the ground and easily supports my weight.

Each side can compress individually without binding up. The rear of the splitter is mounted to the subframe in a way that it can pivot.

I also finally got around to making misalignment spacers for the rear sway bar end links.

I did a rough cut-out of the air dam but haven't started riveting it to the splitter. I ended up using some conveyor belt material I got from McMaster. It's a little more rigid than I hoped it would be, but it's also super cold out today so maybe it'll get a little more pliable.

I still have some engine bay clean-up to do and the final wrapping of the harness, but it really runs sweet with the Haltech, after just a bit of closed-loop O2 learning. The cooling system also bled itself while I sat here and let it idle. Fans kicked on as expected. Oil pressure and temperature are good and no odd noises yet

. I need to make a clutch stop so I don't over-travel the twin-disc clutch, so the only driving I've done is in and out of the driveway. But by the end of tomorrow it'll be ready to go for a shakedown drive.

*clyde* · 03-03-2019, 10:31 AM

Quote:

Originally Posted by John V

But by the end of tomorrow it'll be ready to go for a shakedown drive.

Hope weather cooperates. :/

02-22-2019, 10:50 PM	#1
lip277 The old cranky SOB.... Join Date: Oct 2003 Carmudgeonly Ride: several cars... way too many.... Location: Near Seattle Posts: 4,798	Awesome.... Question -why was the temp above C to begin with? Sensor issues? Or...??? __________________ *Kevin* 1970 2800CS - - 2001 740iL - - 2006 997.1 - - 2012 Escalade 1968 Mustang GT Convertible - - 2003 Ford F250 PSD - - 1985 728i

02-23-2019, 06:08 PM	#5
John V No more BMWs Join Date: Apr 2005 Carmudgeonly Ride: Ram, MS3, CX-5, RX-8 Location: Glenwood, MD Posts: 14,753	The ECU config doesn't load until you cycle the key. Until then things are in an indeterminate state Last edited by John V; 02-24-2019 at 06:01 AM.

02-23-2019, 07:02 PM	#6
JST 195 Join Date: Oct 2003 Posts: 24,636	Schroedinger’s ECU.

02-24-2019, 09:36 AM	#7
ff . Join Date: Mar 2004 Posts: 13,514	Nice!

03-02-2019, 05:02 PM	#9
John V No more BMWs Join Date: Apr 2005 Carmudgeonly Ride: Ram, MS3, CX-5, RX-8 Location: Glenwood, MD Posts: 14,753	Got some work done today. I made a couple bosses to mount my splitter support rods to the splitter. I took an idea from Robert Thorne's SSM car to use gas struts to support the splitter, so it can deflect upwards when it hits the ground. The bosses above mate to a pair of clevises which screw to the struts. I made a tab out of some box section steel and welded it to the crash bar. The cylinders are extended using chromoly rods that I tapped and threaded to a rod end. With the cylinders extended the splitter is level with the ground and easily supports my weight. Each side can compress individually without binding up. The rear of the splitter is mounted to the subframe in a way that it can pivot. I also finally got around to making misalignment spacers for the rear sway bar end links. I did a rough cut-out of the air dam but haven't started riveting it to the splitter. I ended up using some conveyor belt material I got from McMaster. It's a little more rigid than I hoped it would be, but it's also super cold out today so maybe it'll get a little more pliable. I still have some engine bay clean-up to do and the final wrapping of the harness, but it really runs sweet with the Haltech, after just a bit of closed-loop O2 learning. The cooling system also bled itself while I sat here and let it idle. Fans kicked on as expected. Oil pressure and temperature are good and no odd noises yet . I need to make a clutch stop so I don't over-travel the twin-disc clutch, so the only driving I've done is in and out of the driveway. But by the end of tomorrow it'll be ready to go for a shakedown drive.