bgambino Posted December 26, 2006 Share Posted December 26, 2006 hey guys The oil pump o-ring on the 96 2.5 legacy I have the engine overhaul gasket set There is one o-ring that looks close to the correct size but seems a little small in the diameter (does not look like the proper fit) Then, there are 4 identical o-rings that look like they fit much better but 2 things...why 4? and it is not true o-ring...it sort of has a small molded lip in the ID Can anyone tell me with certainty what is what??? Thanks Bill Quote Link to comment Share on other sites More sharing options...
ShawnW Posted December 26, 2006 Share Posted December 26, 2006 The one with 4...3 go inside the block and the one is for the oil pump like you are guessing. Quote Link to comment Share on other sites More sharing options...
WoodsWagon Posted December 26, 2006 Share Posted December 26, 2006 I put a little thin grease on that o-ring to hold it centered while I bolted the pump down. The other 4 fit much better, but don't use them. Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 26, 2006 Author Share Posted December 26, 2006 The one with 4...3 go inside the block and the one is for the oil pump like you are guessing. Thanks Shawn..! Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 26, 2006 Author Share Posted December 26, 2006 Thanks Shawn..! Oh...one other thing I forgot to ask about this....the old o-ring definitely had some anerobic sealant on it.....is it recommended...advised...or not? Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted December 26, 2006 Share Posted December 26, 2006 I can't see how a little sealant or as mentioned grease on it to hold it in place while the pump is fitted is going to hurt. The biggest problem I had was yes the o-ring is a little loose in the groove. On the first attempt it fell out and I didn't notice it. Fortunately I pulled the pump off to double check and saw it. A bit of grease or something to hold it in place would help. Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 27, 2006 Author Share Posted December 27, 2006 So one guy says use one of the 4 supplied O-rings and someone else says "don't" use them...... anyone else have any confirmation from a dealer which is correct??? thanks Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted December 27, 2006 Share Posted December 27, 2006 Do they happen to have a part number on them or is it just a big bag of parts? The o-ring I used was 10991AA001 but this was on an '00. Quote Link to comment Share on other sites More sharing options...
avk Posted December 28, 2006 Share Posted December 28, 2006 I believe a 1996 engine needs the older part number which is indeed the same as for the rings sealing oil passages between the block halves. Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 29, 2006 Author Share Posted December 29, 2006 Do they happen to have a part number on them or is it just a big bag of parts? The o-ring I used was 10991AA001 but this was on an '00. Porcupine no P/n's with the gaskets in the kit Perhaps I will have to go to stealership and ask and then report back to group Thanks for all the input Bill Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 31, 2006 Author Share Posted December 31, 2006 Porcupineno P/n's with the gaskets in the kit Perhaps I will have to go to stealership and ask and then report back to group Thanks for all the input Bill Well...went to stealer...he pulled an o-ring out of a larger package (individual o-ring was not in it's own bag.....it has a purplish color to it...seems to be the same diameter as the 4 funky looking -rongs that came with my engine gasket set....p/n is 806919050...? so....i figured I'd buy it to be safe...friggin thing was 6.61 with tax....crooks I still don't understand why the 4 o-rings in my set were not 0-rings in the true sense of the term (a had sort of molded lip on the ID) Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted December 31, 2006 Share Posted December 31, 2006 Well...went to stealer...he pulled an o-ring out of a larger package (individual o-ring was not in it's own bag.....it has a purplish color to it...seems to be the same diameter as the 4 funky looking -rongs that came with my engine gasket set....p/n is 806919050...?so....i figured I'd buy it to be safe...friggin thing was 6.61 with tax....crooks I still don't understand why the 4 o-rings in my set were not 0-rings in the true sense of the term (a had sort of molded lip on the ID) i think the term o-ring referrs to the circular shape not the cross section . Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 31, 2006 Author Share Posted December 31, 2006 i think the term o-ring referrs to the circular shape not the cross section . you may be right...but I always thought an 0-ring was circular in cross section ...anything else would be a "gasket" ....I have worked for a rubber company for 25 years Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted December 31, 2006 Share Posted December 31, 2006 Good question. Parker defines an o-ring as "a torus; a circle of material with round cross section which effects a seal through squeeze and pressure." I'm kind of fascinated by o-rings; they're sort of mysterious. Quote Link to comment Share on other sites More sharing options...
avk Posted December 31, 2006 Share Posted December 31, 2006 The "O" refers to the cross-section. There are also square rings, D-rings and other kinds. Recently I came across a quad ring, whose cross-section is like a square with concave sides. Quote Link to comment Share on other sites More sharing options...
avk Posted December 31, 2006 Share Posted December 31, 2006 Well...went to stealer...he pulled an o-ring out of a larger package (individual o-ring was not in it's own bag.....it has a purplish color to it...seems to be the same diameter as the 4 funky looking -rongs that came with my engine gasket set....p/n is 806919050...?so....i figured I'd buy it to be safe...friggin thing was 6.61 with tax....crooks I still don't understand why the 4 o-rings in my set were not 0-rings in the true sense of the term (a had sort of molded lip on the ID) The number is correct and yes they're crooks because even the list price is around $2. The lip is just the mold line, they had to put it somewhere. Quote Link to comment Share on other sites More sharing options...
bgambino Posted December 31, 2006 Author Share Posted December 31, 2006 The number is correct and yes they're crooks because even the list price is around $2. The lip is just the mold line, they had to put it somewhere. No....I know a mold parting line (I'm in the rubber business)....this is a molded lip of sorts on the OD of the o-ring If I had access to a digi camera I would cut the o-ring and ake a close up and post it...maybe during the upcominig week Quote Link to comment Share on other sites More sharing options...
avk Posted December 31, 2006 Share Posted December 31, 2006 I'm sure you know better. I thought it had something to do with the mfg. process because the lip does not come in contact with anything. Quote Link to comment Share on other sites More sharing options...
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