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DuncanS
Samba Member
Joined: October 17, 2013
Posts: 4583
Location: New Hampshire
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 Posted: Mon Jul 25, 2022 10:14 pm Post subject: Injector rubber |
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My injectors look like the ones on the bottom. I bought new GW billet rails, but don't know how to renew the hose which attaches directly to the injector which are looking shabby. Injectors are good, and I'm getting >20 MPG and so don't want to replace. Is this possible, or do I need to get new ones?
Duncan |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32987
Location: Reading Pennsylvania
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 6013
Location: Bemidji, MN
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| Posted: Tue Jul 26, 2022 5:04 am Post subject: Re: Injector rubber |
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the injector barbs have a very steep profile on the back side of the barb ramp so the hose end would have to flare out as it is pulled off... the disc keeps the end of the hose from flaring out and therefore locks it in. i added a constant tension, constant compression spring clamp next to that hose too.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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DuncanS
Samba Member
Joined: October 17, 2013
Posts: 4583
Location: New Hampshire
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| Posted: Tue Jul 26, 2022 5:13 am Post subject: Re: Injector rubber |
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Thanks, Dave and Dan. I watched the video which then morphed into another of about 8 mins showing how to clean the injectors. Since I'm getting really good mileage, I'm reluctant to mess with the insides, but I just might. Cleaning the screen seems like a really good thing to do as well as getting rid of any crud that may have accumulated on the inside.
Putting the hose back on wasn't really covered, but I'm guessing with some lube and pushing like hell, it will go back on. Since it's a DD and I have no spares, it's a little scary, but what could possibly go wrong?
Duncan |
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 6013
Location: Bemidji, MN
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| Posted: Tue Jul 26, 2022 5:22 am Post subject: Re: Injector rubber |
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the biggest thing that can go wrong is slicing your hand open when cutting the hose!!!
_________________
-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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DuncanS
Samba Member
Joined: October 17, 2013
Posts: 4583
Location: New Hampshire
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| Posted: Tue Jul 26, 2022 5:44 am Post subject: Re: Injector rubber |
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Oh, good. So with an old piece of sail cloth wrapped around my hand, the car will still be drivable.
Duncan |
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?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 10158
Location: Where?
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| Posted: Tue Jul 26, 2022 8:13 am Post subject: Re: Injector rubber |
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| I would not reuse the metal discs as they are only effective if the OD and flexibility/compression of the hose is the same as what the discs were designed to clamp. Instead, I would toss the discs and add clamps at the injector barbs. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32987
Location: Reading Pennsylvania
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 6013
Location: Bemidji, MN
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| Posted: Tue Jul 26, 2022 9:25 am Post subject: Re: Injector rubber |
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| ?Waldo? wrote: |
| I would not reuse the metal discs as they are only effective if the OD and flexibility/compression of the hose is the same as what the discs were designed to clamp. Instead, I would toss the discs and add clamps at the injector barbs. |
this is a good point. you can see the discs in my above photo but i clamped them too. i remember that the 5/16" hose didn't go into the discs in a very satisfying way so yeah, toss them, get the hose a mm on further, and clamp it.
_________________
-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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Injector-Rehab
Samba Member
Joined: March 11, 2021
Posts: 43
Location: New Jersey
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ALIKA T3
Samba Member
Joined: July 30, 2009
Posts: 7334
Location: Honolulu,Hawaii and France
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| Posted: Thu Jul 28, 2022 12:36 am Post subject: Re: Injector rubber |
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| djkeev wrote: |
Here is a video by mrinjector on removing the hose at the injector.
(Mrinjector is who I send my injectors to fir service)
I've got to admit I fail to fully comprehend how the metal dusc acts as a clamp however....... 🤷♂️
https://www.youtube.com/watch?v=0qEV0UsQGHw
Dave |
Sweat not, I've seen an injector that was missing it since factory.
Never leaked.... The cup prevents the hose from expanding which would lead to it sliding off.
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