VEMS Community Forum

Members => Projects & Installs => Topic started by: bcool on October 23, 2007, 10:27:07 am

Title: My Mazda RX-7 3 Rotor
Post by: bcool on October 23, 2007, 10:27:07 am
Hello all,

I cant say how releived i was when i found out there was a VEMS forum. Trying to communicate/navigate on the VEMS Wiki was nearly unbearable. Anyways to my project. I will be running my rx7 on the v3.2 genboard. I may have to update my mods list later, so ill let the pictures speak for themselves

Mods:
Stock 3 rotor engine
A1000 Fuel pump
A1000 Bypass regulator
3 1600cc secondary injectors
3 Stock 550cc primary injectors
"GT45 spec" turbo
60mm wastegate
etc
etc
(http://myweb.cableone.net/mjbless/project/underback.jpg)
(http://myweb.cableone.net/mjbless/project/engine1.jpg)
(http://myweb.cableone.net/mjbless/project/engine2.jpg)
Modified CAS
(http://myweb.cableone.net/mjbless/vems/CAS.jpg)
Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on October 23, 2007, 10:38:06 am
Here's my genboard:
(http://myweb.cableone.net/mjbless/vems/vemsfinal.jpg)
Title: Re: My Mazda RX-7 3 Rotor
Post by: [email protected] on October 23, 2007, 12:00:11 pm
Welcome to the forum.

Love the RX-7 what model is it?  Got any eye candy pictures of the car?

Rob
Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on October 23, 2007, 12:10:22 pm
It's a 2nd generation:

(http://myweb.cableone.net/mjbless/Done/12.jpg)
(http://myweb.cableone.net/mjbless/project/2.jpg)
Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on October 23, 2007, 10:17:30 pm
I'm about ready to soldier up my IGBT's but i want to double check and make sure that i should be using the GB14C40L (left) to drive my ignitors

(http://myweb.cableone.net/mjbless/vems/igbt.jpg)

Title: Re: My Mazda RX-7 3 Rotor
Post by: [email protected] on October 23, 2007, 10:32:25 pm
Mine has the one on the right: 14N40FVL
The webshop has these numbers:

http://shop.vems.hu/catalog/product_info.php?cPath=1_7&products_id=49&osCsid=a007119673e57397e7d3fb544dc31665

Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on October 24, 2007, 06:10:15 am
I ordered 3 more IGBT for future trailing coil use. So hopefully i end up with the same 3 IGBTs. Anyways i installed the 3 you said you ended up using.
Title: Re: My Mazda RX-7 3 Rotor
Post by: BenFenner on October 24, 2007, 03:47:13 pm
Great project. I'll keep up with it and offer any help I can give.
Title: Re: My Mazda RX-7 3 Rotor
Post by: [email protected] on October 24, 2007, 05:54:35 pm
I ordered 3 more IGBT for future trailing coil use. So hopefully i end up with the same 3 IGBTs. Anyways i installed the 3 you said you ended up using.

Trailing spark/coil is not supported with VEMS :(
Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on October 29, 2007, 01:50:15 pm
It runs! errr should i say ran. I was testing and playing around with it when one of the coils turned into a poof of smoke. I didnt have one of my IGBT's heat sinked and it took a coil out with it. Oh well I already had 3 extras on the way last week. My fuel lines will need replacing as I mixed them up when i was purchasing them and just found out with all the leaks that they were not the "fuel approved" hoses.

When it was running it was running pretty rough. I bumped the timing up to 15* and tried leaning the fuel out but it still ran rough so theres some more troubleshooting to be done once the new fuel hose/IGBT's arrives. Looks like in the time being i'll make sure that everything is set the way it should be. Thanks again for everyone that has helped me out so far. I know it wouldnt have been running (at least this soon) without you guys.
Title: Re: My Mazda RX-7 3 Rotor
Post by: [email protected] on October 29, 2007, 03:20:56 pm
If its running then its not called troubleshooting, its called tuning ;)
Its a good feeling when you get the engine running, no matter how rough ;D
Title: Re: My Mazda RX-7 3 Rotor
Post by: gox on October 29, 2007, 10:03:19 pm
Here's my genboard:
(http://myweb.cableone.net/mjbless/vems/vemsfinal.jpg)

Does every TS diode look like that?  :-\

Mine didnt had that white cicrle around it? Mine is from rescue kit so i think i soldered the right one...  ???

I love RX-7,good drifting car too ;) there are no rx-7's around here :(
Good luck with the project
Title: Re: My Mazda RX-7 3 Rotor
Post by: [email protected] on October 29, 2007, 10:55:49 pm
The ones in the rescue pack are bi-directional diodes, the ones fitted internally are single direction hence the white band.  You should be fine with either type, there was some talk of the internally fitted ones needing to be single directional.
Title: Re: My Mazda RX-7 3 Rotor
Post by: bcool on November 18, 2007, 09:35:35 am
Here it is running. I'm still having problems with my injector staging so i haven't really gotten into boost yet. I had to stop filming during the drive because there were 2 sheriffs on the side of the road ahead. haha

http://www.youtube.com/watch?v=5xKREvioJu8
Title: Re: My Mazda RX-7 3 Rotor
Post by: BenFenner on November 19, 2007, 04:54:58 pm
Not so crappy. ;)