im planning to use the stock b16 fuel rail i really like how it looks polished

and want to get rid of the ble top adapters since im not planning to go back to stock injectors.

xenocron says 14mm hole
some other webpages say 9/16th drill bit which is 14.5mm diameter.

and im not even sure if it has to be tapered or not.

anyone has done it or maybe can measure the inside diameter of rdx injector adapters?

 

I found this which says 14mm. I also found another website mentioning 14mm o rings. You cans always drill bigger so I would start with 14mm and go 14.5mm if needed. I would say xenocron would be correct since the sell the adapter tops so you don't have to drill out your fuel rail.

http://www.onecamonly.com/archive/index.php/t-1895.html

 

i already have them. just want to make that fuel rail for rdx injectors only. thats all im gonna use.

well im gonna try to find a 14mm drill bit now lol. since they are all "us america standard size"

 

you know i'm considering the same on an H23 manifold/rail. i would recommend the use of a reamer for the final size and finish of the holes. this is to ensure a good, leak-free sealing surface for the o-ring. fuel leaks are no fun.

 

I got the adapters but no tools to check size.
Just get the adapters there only like $40 and cuts don't on work.
And the Rdx injectors run damn smooth.

 

Got the adapters already. Not what im asking for. But thanks for trying anyway.

 

I just didnt want to make a mess pulling mine off the car.

 

I would only attempt if you have a drill press otherwise you will have a hell of a time getting a clean and smooth hole.

 

Did you ever attempt this?

 

yea I did with a drill press and a drill

fail. you need a different bit
regular drill bit is wobbly and will leave uneven surface and is hard to find in exact size.
drilling a b16 fuel rail leaves very little wall thickness and any deviation will drill through.


aka. I need another fuel rail for attempt#2 with proper drilling bit

 

how about buying Injector adapters.

so you can use the USCAR injector in your stock fuel rail.

check out :
Fiveomotorsports.com

save the hassle of killing good fuel rails.

 

dang people I ALREADY HAVE ADAPTERS they don't work well with the Px manifold the spacing is incorrect for whatever reason

as I stated in the original thread I have the xenocron adapters

 

buy a USCAR 14mm o-ring fuel rail.

or take your fuel rail to a machine shop.

 

I wanted a stock polished fuel rail that was the only reason for using b16 rail...

 

 

Just need a good machine shop that has the right equipment...Im sure there has to be someone in your area, just need to call around a little bit.

A good engine shop can probably do it...

 

ye i know i just thought it would be easier finding right tools lol

i have a machine shop that i go to usually

taking it to machine shop this time

 

Did you install longer studs when you used the adapters?

 

Edelbrock makes a B Series 14mm fuel rail. It if you want it polished just take some oven cleaner to get the anodize off and hand polish it.

 

it didn't come with any studs
I used stock ones

 

Thanks^

 

A critical hole like this will need to be done on a mill with correct fixture and a correct size reamer! STD drill bits are not capable of doing something like this!