We are working on a 3-rotor 2nd Gen RX-7 Project:


Its at somewhat of a standstill, I was trying to look up what Injectors the 20B came with, Did some searching and got conflicting answers.

I need about 6 Side-feed 550CC injectors and 6 800~CC Side feed injectors, I thought the 20B had them but I Read that they were low-imp somewhere, then again that they were high Imp, Im all confused-

I also read you could buy them for about $80 from a dealer? or was it $30/Ea? The part numbers dont seem to cross over though, I keep getting DENSO part numbers.

 

jesus, you could puree` a cat with that turbo very nice

 

wow

 

This thread would be best suited in the 20B conversions section... Might find the info you need a little quicker there... Nice setup though...

 

hey thats mine! you stole my motor!

 

where did you get the motormounts i want to do mine but i cant find mounts

 

Looks awsome man,
She'l be a beast when it's done haha..
How many horses you think it'l be pushing?

 

Contact Speed Machine for the mounts. Last I checked, they're still making them. Around $250 for the set.

Reese

 

sweet!!!!!!! I made my own solid mounts but I think im going to get a set from speed machines as well.

 

If they are stock Cosmo (20B), they are all high-impedence.


No ways the Mazda dealer would sell them that cheap.
Be prepared to pay like ~$300 / each for them!
You can find them used pretty easily for a LOT cheaper.

We just went over this in a recent thread.

20B primaries = side-feed 550's = FD primaries
20B secondaries = top-feed 550's = Kouki FC turbo fuel injectors (primaries or secondaries)


-Ted

 

Quick question Ted, how do you remove the primary injectors off the fuel rail they are attached too? I want to get mine cleaned and flow tested in the future.

 

IIRC, there's a top plate that needs to be removed (via screws?), and then the injector gets pulled out from the top.
There's o-rings in there to seal everything up, so it's pretty snug.


-Ted

 

Thx. I broke my engine down last week and couldn't figure them out when I took those screws off. I didn't want to break ****.

 

Dave does not offer the mounts anymore. He does it all in house. I tryd to sweet talk him into a pair, but we will see.

 

jeebus, what turbo is that?

 

GT42

Im still sorting out the injector situation after all this time.
The manifold is almost done for it;
Taking its time.

 

why not just get some 1680 secondaries and keep the 550 primaries? mine isnt running yet, but i got it to fit together and hold 80psi fuel pressure just fine.... that combination should be good to around 600hp on a turbo 20b

pat

 

i got some mounts on ebay from a guy with username carlos lopez. i assume its the same carlos thats on here, but not sure. anyway they were decent quality, i had to trim one hole a little and i redid some of the welds because im kinda ****, but they were only $100, i call that a pretty good deal.