Cold start fitting o-ring (the large one)
Thread Starter
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 113
From: Michigan
Cold start fitting o-ring (the large one)
Ok so long story short I need a new o-ring for the fitting for my cold start FITTING that goes into the fuel rail. Despite plenty of lube the old one cut while reinstalling it.
Not the small one for the line out or the big one for the intake manifold, one for the fitting to the fuel rail that no o-ring kits have.
Anyone know a part number or o-ring size?
Not the small one for the line out or the big one for the intake manifold, one for the fitting to the fuel rail that no o-ring kits have.
Anyone know a part number or o-ring size?
Team Owner
Joined: Sep 2003
Posts: 25,383
Likes: 2,736
I believe you had to buy the 'fitting' GM #171120730 to get that seal. There was a seal kit of 3 seal but I thought it included only 102, 103 & 104.
There is a 17112073 on eBay and the seal is shown in the package with the fitting. If you found someone that had maybe metric sealing rings I believe you might be able to be helped but I've no idea of the size.
A Google search of the GM fitting # might reveal maybe some information regarding 'substitutions'.
I saw a post that mentioned that the o-ring was part of a GM# 17111954 but we did some Fiero stuff and I believe it might be an error. You "takes your chances" !!!!!!!!!!!!! The package is also on eBay from a few.
There is a 17112073 on eBay and the seal is shown in the package with the fitting. If you found someone that had maybe metric sealing rings I believe you might be able to be helped but I've no idea of the size.
A Google search of the GM fitting # might reveal maybe some information regarding 'substitutions'.
I saw a post that mentioned that the o-ring was part of a GM# 17111954 but we did some Fiero stuff and I believe it might be an error. You "takes your chances" !!!!!!!!!!!!! The package is also on eBay from a few.
Last edited by WVZR-1; Sep 5, 2015 at 07:02 PM.
Thread Starter
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 113
From: Michigan
I already welded the fitting and if I can't find the o-ring I won't even use that fitting.
Some people could use a rubber band, hair tie or piece of bubble gum and be fine for 20 years. If I don't use the exact correct o-ring my car will burn up. I may just pull it and have it welded up, my luck I'll buy the plug and that o-ring will break too.
Some people could use a rubber band, hair tie or piece of bubble gum and be fine for 20 years. If I don't use the exact correct o-ring my car will burn up. I may just pull it and have it welded up, my luck I'll buy the plug and that o-ring will break too.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I sliced several O-rings trying to get this together. Made me wonder how the factory did it...
It got a little expensive at $25 per set of O-rings (this set is from the dealer about 10 years ago). I made a note to myself so I'd remember how painful this was. This is the 3 O-ring set:
I used an 82° countersink to take off the edge inside the fuel rail. After some polishing the inside was very smooth and the O-ring and fitting slid right in.
.
.
It got a little expensive at $25 per set of O-rings (this set is from the dealer about 10 years ago). I made a note to myself so I'd remember how painful this was. This is the 3 O-ring set:
I used an 82° countersink to take off the edge inside the fuel rail. After some polishing the inside was very smooth and the O-ring and fitting slid right in.
.
.
Team Owner
Joined: Sep 2003
Posts: 25,383
Likes: 2,736
I've given this more thought and I don't believe that it should be as large an issue as we've suggested. You need to ID the thread & pitch. Do you have metric and SAE screw pitch gauges?
I believe it's likely done to either an SAE ORB (o-ring boss) specification or Metric ORB (o-ring boss) specification.
Is the fuel rail constructed similar to this ORB image?
Earls does some but if you ID the thread you should be able to accomplish 'local'.
*****
If you sort the ORB spec of the fitting you could likely use that port for an electronic 'fuel pressure gauge' sender.
I believe it's likely done to either an SAE ORB (o-ring boss) specification or Metric ORB (o-ring boss) specification.
Is the fuel rail constructed similar to this ORB image?
Earls does some but if you ID the thread you should be able to accomplish 'local'.
*****
If you sort the ORB spec of the fitting you could likely use that port for an electronic 'fuel pressure gauge' sender.
Last edited by WVZR-1; Sep 6, 2015 at 07:43 AM.
Thread Starter
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 113
From: Michigan
I sliced several O-rings trying to get this together. Made me wonder how the factory did it...
It got a little expensive at $25 per set of O-rings (this set is from the dealer about 10 years ago). I made a note to myself so I'd remember how painful this was. This is the 3 O-ring set:
I used an 82° countersink to take off the edge inside the fuel rail. After some polishing the inside was very smooth and the O-ring and fitting slid right in.
.
.
It got a little expensive at $25 per set of O-rings (this set is from the dealer about 10 years ago). I made a note to myself so I'd remember how painful this was. This is the 3 O-ring set:
I used an 82° countersink to take off the edge inside the fuel rail. After some polishing the inside was very smooth and the O-ring and fitting slid right in.
.
.
Last edited by BOOT77; Sep 6, 2015 at 08:04 AM.
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Thread Starter
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 113
From: Michigan
Haven't tried it yet but looks the correct size. http://www.summitracing.com/parts/rfw-fr10/overview/