flukey-lukey Posted November 24, 2007 Share Posted November 24, 2007 I'm after a full set of 'O' rings for some 550cc stock UK injectors that I have. I was speaking to the storeman at work the other day and unknown to me the guys that fix the locomotives use these all the time and we have a wide selection of different sizes and thicknesses! He said I can have whatever I like, but I'm unsure on which size/thickness they should be. I took the injectors and the fuel rail to work and tried a couple on for size, but I'd like to know the specific sizes so that he can order me them straight from our supplier if possible. So can anyone shead any light on this for me? Our supplier is Pirtek if anyone knows of or uses them thanks Quote Link to comment Share on other sites More sharing options...
Homer Posted November 24, 2007 Share Posted November 24, 2007 Why don't you just buy them from Toyota? They're peanuts. Quote Link to comment Share on other sites More sharing options...
flukey-lukey Posted November 24, 2007 Author Share Posted November 24, 2007 Why don't you just buy them from Toyota? They're peanuts. lol I'm not sure to be honest I guess if its free it makes me feel better! How much are they from Mr.T? Quote Link to comment Share on other sites More sharing options...
Angarak Posted November 24, 2007 Share Posted November 24, 2007 I seem to remember CW having a close shave with a Supra whose owner skimped on injector O rings - nearly set his garage (and himself) on fire! Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted November 24, 2007 Share Posted November 24, 2007 Yeah Luke you REALLY dont want to mess with them, you may as well just get the OEM ones from Toyota - ill get you the part numbers when you collect the carpet dye! Quote Link to comment Share on other sites More sharing options...
flukey-lukey Posted November 24, 2007 Author Share Posted November 24, 2007 I seem to remember CW having a close shave with a Supra whose owner skimped on injector O rings - nearly set his garage (and himself) on fire! Yeah Luke you REALLY dont want to mess with them, you may as well just get the OEM ones from Toyota - ill get you the part numbers when you collect the carpet dye! Ok guys point taken I wasn't really skimping with these, its just that the storeman said Pirtek who supplies them builds race cars so he would ask them to send the right ones that I need. I'll go to Toyota though Quote Link to comment Share on other sites More sharing options...
Homer Posted November 25, 2007 Share Posted November 25, 2007 Ok guys point taken Good lad I remember Chris's thread about that, he was not a happy fella! Edit: http://www.mkivsupra.net/vbb/showthread.php?t=74647 Quote Link to comment Share on other sites More sharing options...
flukey-lukey Posted November 25, 2007 Author Share Posted November 25, 2007 Good lad I remember Chris's thread about that, he was not a happy fella! Edit: http://www.mkivsupra.net/vbb/showthread.php?t=74647 Interesting read I'll get over to Toyota next weekend Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 25, 2007 Share Posted November 25, 2007 I remember it well, fuel system O rings need to be none fuel sensitive. Just buy the right things Or get the free ones from locomotives and buy a decent plumbed in fire extinguisher system and a set of worry beads. Quote Link to comment Share on other sites More sharing options...
TLicense Posted November 25, 2007 Share Posted November 25, 2007 You can use Nitrile, Hydrogenated Nitril, Fluorocarbon FKM, Hiflour FKM, Perfluoroelastomer FFKM and Fluorosilicone FVMQ o-rings with fuel no problems. Avoid Hydrogenated Nitrile HNBR, Neoprene. Styrene-Butadiene SBR, Polyacrylate ACM, Butyl IIR, Butadiene BE, Isoprene IR, NAtural rubber, ypalon CSM and Silicone MQ/VMQ and PVMQ. Most automotive o-rings are nitile, which are fine. However quite often you'll get Butyl which will be no good. Hope that helps. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 25, 2007 Share Posted November 25, 2007 You can use Nitrile, Hydrogenated Nitril, Fluorocarbon FKM, Hiflour FKM, Perfluoroelastomer FFKM and Fluorosilicone FVMQ o-rings with fuel no problems. Avoid Hydrogenated Nitrile HNBR, Neoprene. Styrene-Butadiene SBR, Polyacrylate ACM, Butyl IIR, Butadiene BE, Isoprene IR, NAtural rubber, ypalon CSM and Silicone MQ/VMQ and PVMQ. Most automotive o-rings are nitile, which are fine. However quite often you'll get Butyl which will be no good. Hope that helps. Or the CW version. As with "finding" mushrooms, unless you KNOW EXACTLY what you have found, and are 100% sure of your facts, buy them at Tescos... An O ring looks much like any other O ring, unless it's colour coded, and then it may for aesthetics. Some black O rings are fine in fuel, some melt, how lucky do you feel with an unknown ring? Quote Link to comment Share on other sites More sharing options...
dandan Posted November 25, 2007 Share Posted November 25, 2007 .... how lucky do you feel with an unknown ring? No comment. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted November 25, 2007 Share Posted November 25, 2007 I could understand this if o-rings cost £150 each! Quote Link to comment Share on other sites More sharing options...
dandan Posted November 25, 2007 Share Posted November 25, 2007 On a serious note - good post Tony and good input Chris - I remember your original worskshop fire thread!! I have a full set of OEM O RIngs if anyoone wants the part numbers... Quote Link to comment Share on other sites More sharing options...
flukey-lukey Posted November 25, 2007 Author Share Posted November 25, 2007 On a serious note - good post Tony and good input Chris - I remember your original worskshop fire thread!! I have a full set of OEM O RIngs if anyoone wants the part numbers... If they're for the UK 550's? Or is there no difference between the 440 j-spec injector O rings and the 550's? Quote Link to comment Share on other sites More sharing options...
TLicense Posted November 25, 2007 Share Posted November 25, 2007 An O ring looks much like any other O ring, unless it's colour coded, and then it may for aesthetics. Some black O rings are fine in fuel, some melt, how lucky do you feel with an unknown ring? Very true. I wouldn't go picking one out of a box that your mate has got or anything like that. If you've got stock injectors get stock o'rings. You can't go wrong that way. If not then go to a decent hose and seal supplier and ask for nitrile o'rings. Tell them it's for fuel and you definitely don't want Butyl ones. Quote Link to comment Share on other sites More sharing options...
Supra ST Myster Posted November 28, 2007 Share Posted November 28, 2007 .. Quote Link to comment Share on other sites More sharing options...
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