dual feed fuel rail
#1
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Just decided i would build my own fuel rail after hearing about the tendency for the stock rail to run lean on cyl. 4 when using a afpr. After searching i found the thread that contained the parts and description of steps but no pics! And i know how much everyone here loves pics. So here are a few of my fuel rail. I did all of this for less than 30$ = win.
Parts:
21/64th drill bit
1/8th npt tap
4 5/16th npt hose barbs
1 5/16th elbow
1 5/16th "T"
4 1/2 feet of 5/16th reinforced fuel injection line
J.B. Weld
High Temp thread sealant
fuel injection T bolt hose clamps
![](https://www.miataturbo.net/forum/members/seraph/albums/116/496.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/497.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/498.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/501.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/485.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/484.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/490.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/489.jpg)
Parts:
21/64th drill bit
1/8th npt tap
4 5/16th npt hose barbs
1 5/16th elbow
1 5/16th "T"
4 1/2 feet of 5/16th reinforced fuel injection line
J.B. Weld
High Temp thread sealant
fuel injection T bolt hose clamps
![](https://www.miataturbo.net/forum/members/seraph/albums/116/496.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/497.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/498.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/501.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/485.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/484.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/490.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/489.jpg)
![](https://www.miataturbo.net/forum/members/seraph/albums/116/491.jpg)
#5
Cpt. Slow
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I thought 1/8" npt was a 11/32 drill? Either way works I suppose. And I think we found it was the improperly routed coolant causing #4 to get hot and explode, not because it was running lean.
#9
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yeah i painted it yellow just for the simple fact that i didn't want anyone to think i was trying to copy FM or anyone else by painting it black, purple, etc.
LOL that is the same intercooler and thanks but i think i'm squared away on the piping. I'll post more pics once it get it in.
LOL that is the same intercooler and thanks but i think i'm squared away on the piping. I'll post more pics once it get it in.
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