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-   -   RX-8 13B-RE conversion! (https://www.rx7club.com/old-school-other-rotary-63/rx-8-13b-re-conversion-988372/)

joeylyrech 05-11-12 09:30 AM

wao it started right up!

speedrx8er 05-11-12 09:32 AM


Originally Posted by joeylyrech (Post 11087111)
wao it started right up!

Yup, first try.:icon_tup:

198713bt 05-11-12 02:26 PM


Originally Posted by speedrx8er (Post 11087114)
Yup, first try.:icon_tup:

Holy hell I'm jealous, can't wait to start mine up. I hope it goes that smooth.

Well done!!!!

ChrisRX8PR 05-11-12 02:41 PM


Originally Posted by 198713bt (Post 11087418)
Holy hell I'm jealous, can't wait to start mine up. I hope it goes that smooth.

Well done!!!!

Well it wasn't that smooth because I will not start again LOL...I think it got so flooded that the spark plugs fouled and now it won't do anything...it was dripping fuel out of the spark plugs threads (they were only finger tight)...

I think new spark plugs, plug wires etc, are in order....along with fixing the tiny pin hole leak of coolant from my modified water housing outlet :/

I will keep at it this weekend and hopefully will get it finished sometime early next week...

Chris

ChrisRX8PR 05-12-12 05:36 PM

3 Attachment(s)
Alright! It moved under his own power...its loud (the exhaust is not joined yet)...but all leaks are acounted for and fixed and it drives...now to work out all the little details...

Cheers!

Something's missing! :)
Attachment 718317

Attachment 718318

Attachment 718319

joeylyrech 05-12-12 07:22 PM

I spotted the COORS LIGHTS.LOL

warren(silver-mazda) 05-12-12 09:29 PM

That's hawt.

cfamilyfix 05-12-12 11:10 PM

Good shit!

brak 05-13-12 12:05 AM

Hey chris, you should hit up our Twin Cities RX8 Facebook group, as i know the others would dig this...


http://www.facebook.com/groups/378208118864707/

damic 05-13-12 03:31 AM

Nice, but no air cleaner and what you going do with the 13B-MSP block?

speedrx8er 05-13-12 01:02 PM

Awesome!!! we can go for a joy ride in about a month or two..

estevan62274 05-13-12 03:38 PM

Looks great bro!

IXC-RX8 05-15-12 06:52 PM

congrats ChrisRX8PR looks great

ChrisRX8PR 05-15-12 08:50 PM

6 Attachment(s)
Quick Update...It only took a few miles of driving to realize that the amount of air that the OEM RX-8 throttle body allows through for idle is not going to cut it on this motor...So I decided to start work on an "idle control needle" of sorts using a pneumatic flow control valve. In case you are wondering, being as though the RX-8 is drive by wire, there is no idle control motor or bleed valve on the throttle since the OEM ecu decides where to hold idle. This is a problem because where its deciding, it wants to shut down. After all was said and done, it worked flawlessly, just enough air to allow me to adjust idle up to 1k-1.1k rpms if needed. Now I can adjust idle speed with the twist of the little knob on the valve. I ended up leaving it at around 850rpm.

Cheers!

Attachment 718320

Attachment 718321

Attachment 718322

Attachment 718323

Attachment 718324

Attachment 718325

Yunosurodosuta 05-15-12 09:38 PM

That looks really good, so does the valve open with the throttle?

ChrisRX8PR 05-15-12 10:57 PM


Originally Posted by Yunosurodosuta (Post 11092034)
That looks really good, so does the valve open with the throttle?

Thanks!

The valve does not open or close with anything. It doesn't need to. All that its to do is bleed air from before the throttle to behind the throttle, enough air for the engine to idle. So basically, you screw it in or out once the engine is close to tune and then you lock it ones it reaches the desired RPM at idle.

Chris

ChrisRX8PR 05-15-12 11:07 PM

Here is a short video with the Idle needle fully out...I later found out that the Throttle body was disconnected and that explained the high idle...It now sits at 850rpm...

:)

http://s679.photobucket.com/albums/v...=VIDEO0007.mp4

SPIKED 05-15-12 11:13 PM

I love what your doing man! the rx8s dont apeal to me as much as the fds or fcs but still interesting! wont you be losing power and a lot of stuff by not using the origonal motor???

dznutzuk 05-16-12 04:32 AM

Yeah I had the same problem, I just used the Haltech Idle speed control instead.

damic 05-17-12 01:27 PM

That's a nice hack :D software is for dummy's hardware for the users.

ChrisRX8PR 05-17-12 10:58 PM


Originally Posted by damic (Post 11093919)
That's a nice hack :D software is for dummy's hardware for the users.

Lol... Only reason I did the idle control that way is because the factory drive by wire throttle is not controlled by the microtech and it has no way of adjusting idle besides the oem ecu...there is no idle speed controller on it. :)

dznutzuk 05-18-12 01:35 AM

Chris, doesn't the Miccrotech have some kind of idle speed controller?

ChrisRX8PR 05-18-12 08:59 AM


Originally Posted by dznutzuk (Post 11094651)
Chris, doesn't the Miccrotech have some kind of idle speed controller?


Yes it does but being as though I hooked it up through the RX-8 harness which doesn't have one and the fact that this bypass proved simple enough to make I just went for it. If it gives me any grief (varying idle with temperature etc) I won't hesitate to install an idle speed control motor. At the moment I did not have one to install so I went this route.

Cheers!

dznutzuk 05-19-12 01:54 AM

Aha, I see, well if you do get one see if you can use a 4wire GM unit, it's much better than a bac valve.

Yunosurodosuta 05-20-12 01:20 AM


Originally Posted by ChrisRX8PR (Post 11092124)
Thanks!

The valve does not open or close with anything. It doesn't need to. All that its to do is bleed air from before the throttle to behind the throttle, enough air for the engine to idle. So basically, you screw it in or out once the engine is close to tune and then you lock it ones it reaches the desired RPM at idle.

Chris

Ahh I see, sorry I dont know much about engines. But its intereesting some of the things people do.


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