FC RX7 5.0 race car thread

[Skervey]

Well I may have gotten screwed... He gave me the injector part of the harness and the ECM but not the wiring that goes from the harness to the ECM so as of now im dead in the water... Might go to the just yard and just pull a full system and get it over with. The guy was going to carb in his mustang and didn't even know that he needed a vacuum advance distributor, let alone what it did!

[Teeson1111]

I already have the granny mounts and suspension is basically done besides steering knuckles. Just looking for an engine/tranny. Probably going the route you did with the clutch system using the miata slave.

Nice, hope my posting helps

Hey im about to pick up a SN95 EFI system, ECM, harness, intake, dizzy... fingers crossed that its everything I need, what helped you figure out what you needed and what you didn't? My first time messing with efi so im clueless!

a decent amount of reading but I basically deleted:
A/C
EGR solenoid
Cruise control anything

diagrams from veryuseful.com, and more importantly pin tracing. ID and label each plug, then de pin and remove as needed.
The SN95 has that awesome bolt together connector in the passenger fender, I re-used it. except the Alt, MAF and fan wiring I think everything else you'll need for the engine is on that connector.

[Skervey]

Hey im about to pick up a SN95 EFI system, ECM, harness, intake, dizzy... fingers crossed that its everything I need, what helped you figure out what you needed and what you didn't? My first time messing with efi so im clueless!

[805vert]

Thanks dude!

Read this thread, Granny's Speed Shop and you should be pretty set methinks

I already have the granny mounts and suspension is basically done besides steering knuckles. Just looking for an engine/tranny. Probably going the route you did with the clutch system using the miata slave.

[Teeson1111]

Also post up a build thread!

[Teeson1111]

Very nice build ill be doing this swap this summer to my vert. Any tips ahead of time??

Thanks dude!

Read this thread, Granny's Speed Shop and you should be pretty set methinks

[805vert]

Very nice build ill be doing this swap this summer to my vert. Any tips ahead of time??

[Teeson1111]

Amazing work.

Ugh must stop my side projects and get back to my FC!! Amazing work as always!

Thanks boys!

[Zach Thomas]

Ugh must stop my side projects and get back to my FC!! Amazing work as always!

[electricalbox]

Amazing work.

[Teeson1111]

I've been rocking out to a new-to-me band, Saint Motel. Makes everything fun really. Really catchy and groovy (they are pretty 70s centric, in a good way) I'm going to see them when they come to Vancouver at the end of April.

So some time ago now I finished putting the engine and fluids in

IMG_6757 by Teeson111, on Flickr

I think I forgot to take this pic off my camera but oh well. I like mobil one and OEM filters when I can't get a Wix XP filter in time. From my research the OEM's are pretty good and built by Purolator to Ford's spec. Always have had good experience with Mobil1, the forums say good things about it in these engines as well. For the amount of km before the next oil change i'm not going to sweat over it regardless

Then things got a little scarier

IMG_6831 by Teeson111, on Flickr

Took the T2 diff I had apart to shim it. I measured its breakaway torque at around 60 ft-lb's and decided to shim it to near spool territory. I want like 150 ft-lb's.

Also drilled the pinion to accept the N/A driveshaft flange on my driveshaft.

IMG_6834 by Teeson111, on Flickr

IMG_6833 by Teeson111, on Flickr

Wasn't as bad as I thought to do either. Still had to go buy a 10mm drill bit to get the size right.

Everything looked ok inside

IMG_6835 by Teeson111, on Flickr

IMG_6840 by Teeson111, on Flickr

I carefully laid and marked everything as it came out. You want to keep everything on the same side as it came out.

Then I copied and cut some pop cans I had around

IMG_6850 by Teeson111, on Flickr

I'm really a Coke-a-Cola drinker but it was recycling day the day before, I was desperate

2 shims a side measure out to an added 0.210mm each side. I hope thats not too much. My diff seems to be a bit worn (measure all the discs at a few thou under spec) and it also appears to have been rebuilt. It was owned by a bunch of RX7 enthusiasts before me so I'm not very surprised.

IMG_6851 by Teeson111, on Flickr

Back together, lock tight and torque wrench the whole way. This feels like engine building to me, its really cool but its scary because tight tolerances and its easy to ruin something.

I still have to set bearing pre-load and correct gear mesh. Unsure how to set bearing pre-load without a special tool, so I may cave and take it to a place, just in case.

I had my buddy help me out with a few things I've been putting off

IMG_6848 by Teeson111, on Flickr

Stainless steel battery box, just needs some welding and a hole or two. NHRA spec as well

IMG_6847 by Teeson111, on Flickr

Had a slight misunderstanding of sheet metal gauge, so these seat brackets he made me were waaaaaaay overkill haha. But it looks cool, especially the logo he cut in. He works at a place called Metaltropolis, their website is WeldBC.com, hit him up if you're in the local area and need any CNC work or metal order. I've gotten them to do my little CNC projects here and there and me and my dad buy all our metal and welding/grinding supplies from them. Great bunch there.

I painted the inside edge of the logo and clear coated them, I think it looks pretty good

IMG_6854 by Teeson111, on Flickr

And a terrible photo showing what it looks like in car

IMG_6856 by Teeson111, on Flickr

This means my passenger seat is finally installed and ready for the season

IMG_6858 by Teeson111, on Flickr

Still have a decent list of small stuff to do before doing events (which are starting), like this

IMG_6843 by Teeson111, on Flickr

Setting up my line lock on a switch and LED. I moved the button into the ashtray as well. No more accidental engaging

[Teeson1111]

When is the blue car getting a build thread?

lol no plans there, ill just throw it in here most likely.

and i'm pretty Zach is right about the gauge senders, use the RX7 ones where the 5.0 gauge ones would go.
Dakota Digital makes a tach adapter than I'm pretty sure would make it easier, but I read through the how-to on grannies to make the RX7 tach adjust to the V8 signal and it doesn't look too bad.
I'm pretty sure the speedo cables are the same, just take the cable from the RX7 and put it in the T5/mustang speedo drive gear. just keep in mind you'll need the plastic gear for the 4.10 diff ratio in the RX7.

Just read through this for about an hour and a half...absolutely insane..I love it!

thanks dude!


update soon, just getting a few last things done before I post

[Sprinqer]

Just read through this for about an hour and a half...absolutely insane..I love it!

[Zach Thomas]

The volt meter should work like stock as you assumed, I don't see how they could do anything weird there. Stock fuel gauge will be unaffected, just keep the stock RX7 wiring intact for it and you'll be good to go! And yes to my knowledge just get the stock RX7 sensors and figure out what adapters you need to screw them into the 302. I'd be willing to bet you can find them off the shelf at a local autoparts store, or through Autometer or any of the other big gauge companies. Also, I think I'm following you on IG haha.

And on the topic of Australian bands, thank you for Closure in Moscow

When is the blue car getting a build thread?

[Skervey]

Ill put this out for Teeson1111 and Zach Thomas, im almost done with my mock up and then it will be painting and final install. But I need to figure out how to get the oil and temp gauge on the stock dash to work. I thinking about getting oil and temp sensors for the rx7 and installing them on the 302.

I really want to make the stock dash work. Granny speed shows you how to calibrate for the rev counter and iv seen online where people use a stock foxbody speedo cable to the mazda cluster but no one talks much about the other stuff. I amuse the volt meter will still work the same as well as the gas gauge.