Which o-rings have the potential to leak on WVO?

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Which o-rings have the potential to leak on WVO?
Topic Started: Mon Oct 26, 2009 11:25 am (184 Views)
EddieJT	Mon Oct 26, 2009 11:25 am Post #1
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Hi Guys, I am noticing the inevitable oil patch on the road where the car has been parked. Had a look under the car and there is a drop of VO forming on the bottom of the sump. Don't know exactly where it's coming from yet, but would like to change all the o-rings with potential to leak in one hit if I can. So which would these be? I know of main oil filter o-rings, but what else? And what sizes and where to get them from if anyone had experience?



shrekky	Mon Oct 26, 2009 11:38 am Post #2
Member Posts: 3,912 Group: Members Member #223 Joined: March 23, 2006	EddieJT Mon Oct 26, 2009 11:25 am Hi Guys, I am noticing the inevitable oil patch on the road where the car has been parked. Had a look under the car and there is a drop of VO forming on the bottom of the sump. Don't know exactly where it's coming from yet, but would like to change all the o-rings with potential to leak in one hit if I can. So which would these be? I know of main oil filter o-rings, but what else? And what sizes and where to get them from if anyone had experience? remove your air filter and check the top of the injector pump.................where the injector lines fix to it,the circled bit here the seals in these do go...................i've got this problem



EddieJT	Mon Oct 26, 2009 12:14 pm Post #3
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Thanks for that. So that would be changing part 7h in the drawing?



shrekky	Mon Oct 26, 2009 12:20 pm Post #4
Member Posts: 3,912 Group: Members Member #223 Joined: March 23, 2006	7h and 7f.....................7f is a copper washer.........................the stock o-ring,7h is rubber...................but you can get ones make from other stuff .andy(ukmerctechie) did tell me what they were made of............but i forgot the name..........they are better when running veggy oil,might be worth pm'ing him and asking him about them



EddieJT	Mon Oct 26, 2009 12:57 pm Post #5
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Viton?



chrismatheou	Mon Oct 26, 2009 1:11 pm Post #6
Enthusiast Posts: 1,463 Group: Members Member #789 Joined: January 4, 2007	Yeah they're called Viton O Rings. You're going to need a special Merc tool to remove the pressure valves too. If you read through Nezamr's thread that he started for the GTG we had it's full of info about these O Rings including links to walkthroughs on how to do them.



EddieJT	Mon Oct 26, 2009 1:54 pm Post #7
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Oh yeah-I knew I'd seen something about them. Did you get yours done in the end Chris?



chrismatheou	Mon Oct 26, 2009 2:03 pm Post #8
Enthusiast Posts: 1,463 Group: Members Member #789 Joined: January 4, 2007	Nope I'm sure I desperatly need them doing though I get oil patches on the floor too and everything else is leak free. The original rubber ones are pennies from MB but I want some of the Viton ones as the rubber ones will probably fail after 6 months again. I think the ones that Reza bought to the GTG wern't the correct size and the job wasn't as easy as we initially thought as you have to take your time and make sure everything is nice and clean so we didn't do them in the end. I think they're minimum order so maybe we could get some together if your up for it, maybe even do them together if you want.



EddieJT	Mon Oct 26, 2009 2:28 pm Post #9
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	chrismatheou Mon Oct 26, 2009 2:03 pm Nope I'm sure I desperatly need them doing though I get oil patches on the floor too and everything else is leak free. The original rubber ones are pennies from MB but I want some of the Viton ones as the rubber ones will probably fail after 6 months again. I think the ones that Reza bought to the GTG wern't the correct size and the job wasn't as easy as we initially thought as you have to take your time and make sure everything is nice and clean so we didn't do them in the end. I think they're minimum order so maybe we could get some together if your up for it, maybe even do them together if you want. Yeah I'd be up for that. Let me know.



chrismatheou	Mon Oct 26, 2009 2:45 pm Post #10
Enthusiast Posts: 1,463 Group: Members Member #789 Joined: January 4, 2007	Well I have the whole of next week of uni if your up for it. I'll be busy on the Tuesday, Wednesday and weekend. Let me know what your think. I was up for geting a professional to do the job but I was quoted 120, call me tight but I thought that was a bit steep...



EddieJT	Mon Oct 26, 2009 2:52 pm Post #11
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Well I work during the week so weekends are the only option for me (although these are usually spent renovating my house). Do you know what size we are after? I'm gonna take the air filter off if it's still light when I get home and take a closer look.



chrismatheou	Mon Oct 26, 2009 3:04 pm Post #12
Enthusiast Posts: 1,463 Group: Members Member #789 Joined: January 4, 2007	Not sure on the size although I can measure the original merc ones. The inlet manifold will have to come of in order to change them though, not much pouint in taking the airfilter off unless you're actually going to start the job, you can see if they are leaking from the top. The problem with the veg leaking from there though is that it all drips down the side of the pump, engine block and then sits in the recess where the bolt is in the top of the engine mount, soaking the mount and eventually eating the rubber away as in the case of mine and causing it to calapse in on itself I'll see if I can do anything on the weekend front and let you know.



shrekky	Mon Oct 26, 2009 5:11 pm Post #13
Member Posts: 3,912 Group: Members Member #223 Joined: March 23, 2006	chrismatheou Mon Oct 26, 2009 2:03 pm I think they're minimum order so maybe we could get some together if your up for it i'd be in for some too



nezamr	Mon Oct 26, 2009 6:00 pm Post #14
Member Posts: 798 Group: Members Member #2,484 Joined: April 4, 2008	chrismatheou Mon Oct 26, 2009 2:03 pm Nope I'm sure I desperatly need them doing though I get oil patches on the floor too and everything else is leak free. The original rubber ones are pennies from MB but I want some of the Viton ones as the rubber ones will probably fail after 6 months again. I think the ones that Reza bought to the GTG wern't the correct size and the job wasn't as easy as we initially thought as you have to take your time and make sure everything is nice and clean so we didn't do them in the end. I think they're minimum order so maybe we could get some together if your up for it, maybe even do them together if you want. The ones i got were the closest size to the originals! The viton was slightly thicker and the hole in the middle slightly smaller, so when stretched slightly, they were the same size! The hole was only 1-2mm smaller unstretched!



EddieJT	Tue Oct 27, 2009 11:27 am Post #15
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	If this is an inlet manifold off job, and fiddly with cleanliness very important, I think I'll do it in my parent's garage. Would love for you all to join me but don't think it would go down too well with the old man-he is reluctant enough me taking his Caterham 7 out of the garage to get the Merc in anyway. I shall take pics when I get round to it, and put up a post. I am up for doing the group buy on the seals though, or buying some off you nezamr?



Rich27	Thu Oct 29, 2009 5:29 pm Post #16
If it has tits or an engine it will be trouble Posts: 13,258 Group: Members Member #348 Joined: June 15, 2006	shrekky Mon Oct 26, 2009 5:11 pm chrismatheou Mon Oct 26, 2009 2:03 pm I think they're minimum order so maybe we could get some together if your up for it i'd be in for some too And me. Just seen a little leak on one of the injectors so I need some tooo.



chrismatheou	Thu Oct 29, 2009 5:38 pm Post #17
Enthusiast Posts: 1,463 Group: Members Member #789 Joined: January 4, 2007	Reza where did you get them from mate? You sure we can't get the exact size?



pwbadi	Thu Oct 29, 2009 5:49 pm Post #18
Member Posts: 117 Group: Members Member #4,272 Joined: June 13, 2009	I would like some as well



nezamr	Thu Oct 29, 2009 8:26 pm Post #19
Member Posts: 798 Group: Members Member #2,484 Joined: April 4, 2008	chrismatheou Thu Oct 29, 2009 5:38 pm Reza where did you get them from mate? You sure we can't get the exact size? I got mine from polymax.co.uk Their delivery is really fast!



nathantheengineer	Sun Nov 1, 2009 12:08 pm Post #20
Member Posts: 89 Group: Members Member #2,051 Joined: December 21, 2007	I work for a company that can get viton o rings really cheaply. I just need a size and then i will enquire. Regards Nathan



Rich27	Fri Nov 6, 2009 7:37 am Post #21
If it has tits or an engine it will be trouble Posts: 13,258 Group: Members Member #348 Joined: June 15, 2006	nezamr Thu Oct 29, 2009 8:26 pm chrismatheou Thu Oct 29, 2009 5:38 pm Reza where did you get them from mate? You sure we can't get the exact size? I got mine from polymax.co.uk Their delivery is really fast! What size fits a 300TD`s diesel injectors as mine is leaking like crazy and I need some asap



nezamr	Fri Nov 6, 2009 11:57 am Post #22
Member Posts: 798 Group: Members Member #2,484 Joined: April 4, 2008	I THINK BS112V75 is the right size to use, but i havent changed mine yet, so cannot be definate. MY DISCLAIMER: BUY THESE O RINGS AT YOUR OWN RISK....I ONLY THINK THESE ARE RIGHT SIZE. SOME MIGHT SAY IT WOULD BE BEST TO STICK WITH THE OEM ONES AS THEY LAST 100K + MILES. As Kenny and Chris can tell you, viton is not always better (as we found out when i couldnt get the bolt with viton o rings out of my fuel filter!)



Rich27	Tue Nov 10, 2009 6:37 pm Post #23
If it has tits or an engine it will be trouble Posts: 13,258 Group: Members Member #348 Joined: June 15, 2006	I had a major leak today. At the last injector thingy on the block there is fuel in and fuel out, the fuel out on the last injector has a blanking rubber bung. Mine perished and allowed diesel/SVO to be pumped out everywhere and caused a lot of smoke. Luckly I had some spare fuel line stuff so I cut off a length and screwed a screw in the top to seal it. It seams to be stopping the leak. As its a rubber stopper I would reccomend that you lot check yours in case its perished. The fixed Bit circled. Edited by Rich27, Tue Nov 10, 2009 6:49 pm.



shrekky	Tue Nov 10, 2009 7:39 pm Post #24
Member Posts: 3,912 Group: Members Member #223 Joined: March 23, 2006	you can buy kits from motor discount stores richy...................that contain the pipes( all 4 ) that go from one injector to another and the rubber bung that goes on the end injector for about �3



EddieJT	Tue Nov 10, 2009 8:06 pm Post #25
Member Posts: 89 Group: Members Member #3,103 Joined: August 16, 2008	Was it just the bung that perished? Thanks for letting us know.



kentronix	Tue Nov 10, 2009 8:18 pm Post #26
Admin Posts: 16,348 Group: Admin Member #147 Joined: January 20, 2006	Its quite common, mine had gone too, I did exactly the same as rich, a bit of rubber hose and a bolt in the end.



Rich27	Tue Nov 10, 2009 8:22 pm Post #27
If it has tits or an engine it will be trouble Posts: 13,258 Group: Members Member #348 Joined: June 15, 2006	EddieJT Tue Nov 10, 2009 8:06 pm Was it just the bung that perished? Yup. Easy fix though if you have some tuvbe and a screw.



pwbadi	Wed Nov 11, 2009 6:41 am Post #28
Member Posts: 117 Group: Members Member #4,272 Joined: June 13, 2009	Same thing happened to me. Luckily I had a spare rubber bung. Any updates on those O rings. I would like to replace them before it gets worse. I can see a small leak now and its after 3000 miles on WVO



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