Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Fuel Injector metal ring
Forum Index -> Bay Window Bus Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
brownbus2
Samba Member


Joined: October 13, 2020
Posts: 244
Location: Roanoke, VA
brownbus2 is offline 

PostPosted: Thu May 06, 2021 5:46 pm    Post subject: Fuel Injector metal ring Reply with quote

Does anyone have a part number, source, or, 3 they want to part with of:

Image may have been reduced in size. Click image to view fullscreen.



if not...two of my injectors were missing them. The two that were missing them were the white injectors...would not having that ring be a big fire hazard?
_________________
formerly known as Brown_Bus
1976 FI Marino Yellow Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 50254

Wildthings is offline 

PostPosted: Thu May 06, 2021 6:08 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

Not really sure what the rings do. Most people cut them off and don't replace them. Instead of using a hose as per the original that is sturdy enough that a clamp they just use 30r9 hose and then use a FI rated hose clamp.

Using Gate Barricade hose that carries BOTH a 30r9 and a 30r14 rating is fine, just don't use the GB that only carries the 30r14 rating.

If your injectors don't match and all meet the original flow specs running them could be detrimental to your engine's life.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
busdaddy
Samba Member


Joined: February 12, 2004
Posts: 51057
Location: Surrey B.C. Canada, but thinking of Ukraine
busdaddy is offline 

PostPosted: Thu May 06, 2021 6:14 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

The rings took the place of clamps, it's very similar to the Push-loc system, speedy on the production line in tight spots like that. Unless you are planning on competing at Pebble beach a good FI clamp will do the job just fine.
_________________
Rust NEVER sleeps and stock never goes out of style.

Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!

Слава Україні!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
brownbus2
Samba Member


Joined: October 13, 2020
Posts: 244
Location: Roanoke, VA
brownbus2 is offline 

PostPosted: Thu May 06, 2021 7:03 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

i have the hose and clamps from the kit from German supply
_________________
formerly known as Brown_Bus
1976 FI Marino Yellow Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
germansupplyscott
Samba Member


Joined: May 22, 2004
Posts: 7090
Location: toronto
germansupplyscott is offline 

PostPosted: Thu May 06, 2021 7:10 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

Injectors with the ring are, like busdaddy said, designed like a push-lok double hose barb. The metal ring style of injector do not come with a hose clamp from the factory, just the ring. These injectors are usually blue and are from later engines (2.0l if I recall). These could technically be used without a clamp provided the ring is present and the replacement hose is suitably tight. Clamping them won't hurt.

Image may have been reduced in size. Click image to view fullscreen.


The earlier injectors (grey body) use a metal swaged clamp and have a smaller and less aggressive single barb. They need a clamp if you remove the original swaged-on hose.

Image may have been reduced in size. Click image to view fullscreen.


I think the injectors look nice and clean (and they will seal fine and not leak) with just the ring but this should only be done if they are the 'push-lok' barb style that came that way originally and only if you have proper hose.

Image may have been reduced in size. Click image to view fullscreen.

_________________
SL


Last edited by germansupplyscott on Thu May 06, 2021 7:29 pm; edited 2 times in total
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
brownbus2
Samba Member


Joined: October 13, 2020
Posts: 244
Location: Roanoke, VA
brownbus2 is offline 

PostPosted: Thu May 06, 2021 7:15 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

thanks Scott

My bus has two of each color. I have the wonderful kit that you sell and will just use the clamps that are in that.

Thanks everyone!
_________________
formerly known as Brown_Bus
1976 FI Marino Yellow Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 50254

Wildthings is offline 

PostPosted: Thu May 06, 2021 10:28 pm    Post subject: Re: Fuel Injector metal ring Reply with quote

I don't think the ring was a clamp, maybe it offered some protection to the end of the original hose against UV degradation or something? I am going to guess it's just one of those German things, where a loose end just has to have something done to it whether the solution really does anything or not.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
raygreenwood
Samba Member


Joined: November 24, 2008
Posts: 21474
Location: Oklahoma City
raygreenwood is offline 

PostPosted: Fri May 07, 2021 6:09 am    Post subject: Re: Fuel Injector metal ring Reply with quote

Scott pretty much nailed it.

The little metal dish/ring is a ferrule. We saw them on a few low pressure clamping systems in other industries through the 80s. They are still used in some countries.


But.....he is also correct that these ferrules will NOT work on any injector or connection that does not have the double barb.
More specifically......notice how big in diameter and sharp edged those barbs are?

The two barbs close together are designed to force the hose that goes over the inner barb.....to angle inward toward the smooth part of the tube. Its just physics. Because the rubber has to stretch .....outward.....at an angle.....to get over that second/inner barb....it pulls the rubber in that direction like a ramp......chamging the angle of the OD of the tube.

The ferrule only has to have enough wall or dish..... to prevent the rubber from expanding outward/straight again.....to keep it from backing off the barb.

Cool design!

So why are these miracle ferrules not just used everywhere.....right?

Because......

A. If the hose wall section changes more than a nominal amount either thicker or thinner.....the deflection of the hose inward going over the second barb may not be enough (might need a larger barb) or may need a larger ferrule rung.

B. As hose ages and gets brittle.....depending on the type it can shrink up and with barbs this large can cut the hose.

C. Its only good for lower pressures below about 65-75 psi......and that depends on the hose design, its rubber and reinforcing type. Above that pressure you will need a standard crimped ferrule to prevent the hose from inflating and blowing off the barb.

Ray
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 50254

Wildthings is offline 

PostPosted: Fri May 07, 2021 9:26 am    Post subject: Re: Fuel Injector metal ring Reply with quote

raygreenwood wrote:

The little metal dish/ring is a ferrule. We saw them on a few low pressure clamping systems in other industries through the 80s. They are still used in some countries.


If the hose slid outwards over the twin barbs far enough for the ferrule (as you call it) to have an effect the system would already be in a failure mode, so I don't buy that explanation at all.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Bay Window Bus All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2023, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.