Injector Diffuser

Reply Subscribe

Thread Tools

Search this Thread

Jul 14, 2018 | 06:21 AM

kenpo1441

Thread Starter

Full Member

iTrader: (2)

Joined: Apr 2011

Posts: 129

Likes: 25

From: Indianapolis

Injector Diffuser

Does the o-ring for the primary injector diffuser sit on of the diffuser or do you slide it over the diffuser so it makes a seal between the diffuser and the iron.

Jul 14, 2018 | 06:57 AM

FührerTüner

Penis Healthy

iTrader: (5)

Joined: Jul 2013

Posts: 2,596

Likes: 799

From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█

Jul 14, 2018 | 11:00 AM

kenpo1441

Thread Starter

Full Member

iTrader: (2)

Joined: Apr 2011

Posts: 129

Likes: 25

From: Indianapolis

Thank you. I was looking at that diagram the other day and it doesn’t mention any o-rings for the primary diffuser, but it almost looks like there’s one in pic. I guess the o-rings that can with my rebuild kit are meant for the secondary diffusers.

Jul 14, 2018 | 02:12 PM

armans

Senior Member

iTrader: (2)

Joined: Oct 2014

Posts: 500

Likes: 38

From: America's finest city

You're probably referring to the rubber grommets. They seat on top of the diffusers. Here is how the primary grommet looks like
https://www.atkinsrotary.com/store/9...A1-13-257.html

Jul 14, 2018 | 02:25 PM

kenpo1441

Thread Starter

Full Member

iTrader: (2)

Joined: Apr 2011

Posts: 129

Likes: 25

From: Indianapolis

I bought a pair of those for the primaries and secondaries. The rebuild kit I bought came with two o-rings that are meant for the diffusers, my guess is for the secondaries. All of the diffusers broke when I disassembled the engine so I purchased new ones...the secondaries came with new o-rings already installed. Just want to make sure that I am moving in the right direction and I don't have a massive fuel leak when I test the system.

Jul 19, 2018 | 05:07 AM

ZoomZoom

SEMI-PRO

iTrader: (2)

Joined: Feb 2001

Posts: 2,865

Likes: 36

From: New Jersey

Quote:

Originally Posted by kenpo1441

I use ID injectors and billet fuel rails and I removed my diffusers as they are prone to get brittle and break causing engine failure. They aren’t necessary from what I’ve been told so I don’t run them. I was told that the spray pattern of the most modern injectors doesn’t require them.

I am always on the lookout to remove any potential issues that might cause engine failure. If your motor is out and you are replacing with new diffusers you are probably safe from them breaking due to age. I was upgrading my fuel system and didn’t know the age of the diffusers so I removed them. It’s a bit tricky when the engine is together in the car. You don’t want to break one and drop a piece inside.