I already searched and couldn't find much. Hopefully one of you guys can help, this is the last dam thing holding up my engine install.

I have an AEM fuel rail for my B18C1. I bought a -6 feed line kit from the stock fuel filter to the rail, and then from the rail to my FPR (thanks Stan! I know that the AEM fuel rail is supposed to have -6 inlet and outlet ports... My -6 AN port adapter screwed in perfectly in the outlet of the rail, but on the inlet...it's different! the -6 fitting went in not even halfway and then started getting really tight, so i backed it out, and the dam first 2 threads in the rail are semi-stripped...argh.

So the question is, what would be my easiest solution? What is the size of the inlet to begin with? do i get a tap? say a 9/16-18 sae and try to thread it? isn't that the equivalent of a -6 thread? Should i drill the dam thing and tap for a bigger npt fitting... i went to all the muscle car shops around here and dam billy bob ain't much help. Any ideas, please help me out guys...


Modified by TRUST8383 at 3:46 PM 11/20/2003

 

Flamenco-T (3:23 PM 11/20/2003):

Jon,
if you can get a 3/8" NPT tap, you can tap the fuel rail inlet and I can send you the 3/8" NPT to -6AN adapter today. 9/16-20 is -6AN, but AEM may have not thread it right back in production. I have seen once or twice before.

Flamenco-T (3:24 PM 11/20/2003): If you can just cover my shipping for Priority mail ( you'll have it saturday), I'll give you the fitting adapter for free..

That my friends is customer service!!

Flamenco-T (Stan) thanks Stan!

one day my POS will run!!




http://www.fast-turbo.com

 

Jon, that's one nice POS heheheh...

thanks for the kind words..

stan

 

I just had the exact same problem with a AEM fuel rail bought for a Prelude SH! The fuel inlet fitting did NOT fit into the hole it was designed for. Infact it would fit on ever other same sized hole on the rail but this one. And to prove all the holes are the same size the plugs would fit all holes and the fitting would fit the same holes except for the one on the driver side. The fitting was designed to fit this hole but it was too tight to thread all the way in completely.

What we did was put it in a vice. Squirted some WD40 on the threading and slowly worked it in. I would make it tight and back it out. And do it again, each time going more and more into the rail.

Please call AEM and complain. I called them and they said no one else is having this problem and I want you to make sure they know theres a problem with their fuel rails. The hole or fitting is not manufactured right. Where did you buy it from?


Modified by Muckman at 12:09 PM 11/20/2003

 

man, i knew i wasn't crazy, ehehe. Yeah, i tried the fitting that came with the rail too and it didn't fit the inlet as well... I would've used your solution, except the first 2 threads going in, are kinda stripped, so even if i had the right fitting, it has a hard time catching. F*ck it, grabbing the 3/8" npt tap and tappin this weekend. Hope to be up and running by thanksgiving...

 

I just contacted Robert at AEM, (310) 484-2322. He asked me to return my fuel rail so they can inspect it. I informed him of the problem and that you were having the same issue. He even addmited he had the same issue with his motor but he cleaned out the threading with his own tap and die set. Robert suggested that the problem may lie with the anodizing process adding material to the threading causing chaffing.

I will be returning this fuel rail for an exchange. Hopefully they will check the fitment on the new rail before they send it out.

 

I had a similar problem, except my inlet port was fine and the outlet port was stubborn.

It might have been the plug was misthreaded b/c I never tried the AN port adapter on the outlet side.

After test fitting the adapter and plug, I was tempted to try the Earl's -6AN to 9/16" o-ring port adapter to see if it fit any better. I managed to get the plug in without much fuss, so I didn't get to try the Earl's piece.

 

Robert said the hole is definitely 9/16". Damn anodizing. AEM may have to alter their manufacturing process to clear out the threads.

 

Got my fuel rail warrantied and returned this morning. God damn fuel inlet fitting is still tight.