Anyone got the specs on the o-ring for the GMS1 sensors?
#1
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Anyone got the specs on the o-ring for the GMS1 sensors?
I don't want to have to pay shipping on $5 worth of o-rings. Does anyone know what the ID and OD is on the o-rings for the GMS1 sensor, so I can just pick them up from Grainger? Thanks.
#6
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It comes with o rings. I forget how, but I nicked one of mine, so I picked up a packet of spares. BTW - you'll need to use small picks to get them on/off without damaging them, and you should put a very light layer of silicon or clean engine oil to get them on, and into the pipe.
#8
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It's a fatter o-ring that replaces the green stock 3 bar o-ring, because the stock 3 bar o-ring is meant for the HHR coldside pipe which, I guess, has a different size of hole in it.
From the instruction pdf:
11. Make sure that the green O-ring from the production MAP sensor
is no longer attached to the mounting surface. Put the
new O-ring on the new TMAP sensor. Both are provided in the
kit. Lubricate O-ring with clean engine oil before installation.
Last edited by SSlobalt; 01-28-2012 at 03:10 PM.
#9
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Everything I ordered was from CED. I ordered 2 sensors and the harnesses...I had assumed if i needed anything else it would be supplied or resuse stock seals...
I'm not running GM stage 1, just want to be able to accurately tune using HP tuners
I'm not running GM stage 1, just want to be able to accurately tune using HP tuners
#10
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That really pisses me off...
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
#11
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That really pisses me off...
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
#12
Senior Member
Thread Starter
That really pisses me off...
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
So i am going to need these...maybe a local dealer will have a couple. Is this a common seal or is it pretty specific to the lnf?
This must be the one then....
O-RING 3 Bar Map Sensor 12626998 - Crate Engine Depot
#13
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I would just order but will need them by Wednesday, so I'm kinda pressed for time.
Looking at the stock sensor, I see no reason why I can't resuse the stock o rings on the 2 bar sensors...
Looking at the stock sensor, I see no reason why I can't resuse the stock o rings on the 2 bar sensors...
#14
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I tore one of the O-rings from my kit while installing it on the sensor.
I think I used a blue O-ring from a 5.3L V8 fuel injector set as a replacement. It was about the same size and worked fine.
I think I used a blue O-ring from a 5.3L V8 fuel injector set as a replacement. It was about the same size and worked fine.
#15
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I though of that but then wondered why they wouldn't just tell you to remove those and put them on the new sensors. Maybe that will work.
#16
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Hooked up ds33gt too. I'm down to 40 or so of these things They are milspec buna-n, aka nitrile. I ordered mine from Mcmaster in a 50 count bag, but they were really repackaged from oringsusa. $13 from Mcmaster for a 50 count bag, or 22 cents each plus shipping from oringsusa.
oringsUSA
http://www.mcmaster.com/nav/enter.asp?partnum=5018T239 (price has gone up since I bought them)
I also tried a few Viton and Fluorosilicone, and neither of those options work. Too stiff. You will break the GMS sensor trying to get them on.
oringsUSA
http://www.mcmaster.com/nav/enter.asp?partnum=5018T239 (price has gone up since I bought them)
I also tried a few Viton and Fluorosilicone, and neither of those options work. Too stiff. You will break the GMS sensor trying to get them on.
#18
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Thread Starter
#22
Senior Member
I probably wouldn't have used Nitrile. I looked at the different O-ring materials and fluorosilicone is probably the best route to go. They all have similar durometer ratings (A70-A75) so one being more "rigid" than the other shouldn't be a problem, just use plenty of lube. The fluorosilicone is also rated to a colder temperature that makes me feel more comfortable. The Buna-N/Nitrile and Viton O-rings don't seem to be rated as low as what the rest of the engine is rated for, but I could be wrong.
I avoided sliding the O-rings over the 3-bar MAP sensors, there is part of the flute that is sharp and could tear into the O-rings if you forced them down. I wrapped the flutes with clear scotch tape so the o-rings would slide right down.
I avoided sliding the O-rings over the 3-bar MAP sensors, there is part of the flute that is sharp and could tear into the O-rings if you forced them down. I wrapped the flutes with clear scotch tape so the o-rings would slide right down.
#23
Senior Member
Thread Starter
I probably wouldn't have used Nitrile. I looked at the different O-ring materials and fluorosilicone is probably the best route to go. They all have similar durometer ratings (A70-A75) so one being more "rigid" than the other shouldn't be a problem, just use plenty of lube. The fluorosilicone is also rated to a colder temperature that makes me feel more comfortable. The Buna-N/Nitrile and Viton O-rings don't seem to be rated as low as what the rest of the engine is rated for, but I could be wrong.
I avoided sliding the O-rings over the 3-bar MAP sensors, there is part of the flute that is sharp and could tear into the O-rings if you forced them down. I wrapped the flutes with clear scotch tape so the o-rings would slide right down.
I avoided sliding the O-rings over the 3-bar MAP sensors, there is part of the flute that is sharp and could tear into the O-rings if you forced them down. I wrapped the flutes with clear scotch tape so the o-rings would slide right down.
#24
I know that I'm updating an old thread...
Good deal on these o-rings at Amazon.
It's an 'add-on' item, meaning that it can only be added on to an order & can't be bought
just by itself.
$3.20 for a bag of 100....
100 of these, for what you would pay for just one...
I got my bag of o-rings yesterday, & just installed one on my buggy today.
Perfect fit....
Good deal on these o-rings at Amazon.
It's an 'add-on' item, meaning that it can only be added on to an order & can't be bought
just by itself.
$3.20 for a bag of 100....
100 of these, for what you would pay for just one...
I got my bag of o-rings yesterday, & just installed one on my buggy today.
Perfect fit....
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