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G10 distributor o-ring size?
Topic Started: Mar 7 2013, 09:12 AM (2,535 Views)
Old Man


found the o-ring at Ace Hardware.
Find it by its specs (Inside Diameter 15/16" Outside Diameter 1-3/16" Thickness 1/8")

That answered your immediate question, however there are a total of 4 places that a distributor can leak oil. For your education they are all listed in this thread:
http://geometroforum.com/topic/5016443/1/

Edited by Old Man, Mar 7 2013, 01:39 PM.
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biglady112
Member
[ *  *  * ]
My leak was the oring. I went ahead and put a new one in there from a universal kit I had. I cleaned up the inside of the housing with some sand paper before I put it back together. I also cut a new gasket for the rear of the housing that bolts to the head. The oring I used from the kit was called a 22mmx4mm. It measured out to 21.73mm ID, 29.8MM OD and 4mm thick on the money. It was a little large. But after the sand paper, some vaseline and a little push, it went right in. I ran it for a bit and seem to be leak free. We will see what it looks like after I make my journey to Arkansas next week.
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clarkdw


rjsdotorg
Mar 7 2013, 01:12 PM
Lowes' is Danco 15/16" x 1-3/16" x 1/8" Rubber Faucet O-Ring
The Suzuki 3.5mm part is smaller ID. From clarkdw
Int dia 27.70 mm 1.091 inches
int dia tolerance 0.28 mm 0.011 inches
cross section 3.5 mm 0.138 inches
JIS B 2401 standard o-ring size JIS B 2401 P28


In inches:
Suzuki : 0.897 x 1.163 x .138
Std US #213: 0.921 x 1.199 x .139
When I pull my dist tomorrow and replace with GG's part I'll try to mic the hard parts. As GG said, it should be an interference fit. I put a new 213 o-ring from a hardware store in at rebuild and now it leaks. I think the larger ID is the issue; it fits loose in the groove. Even though you have to compress it to shove it in it isn't the perfect fit.
That is the mistake I made in my edited post. The JIS B 2401 P28 o-ring is for the coolant tube, not the distributor.
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clarkdw


freegeo
Mar 7 2013, 12:21 PM
O-ring size is OD=30.7 mm ID=23.7 mm
That makes it a JIS B2401 P24 o-ring.
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Deleted User
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clarkdw
Mar 7 2013, 03:23 PM
freegeo
Mar 7 2013, 12:21 PM
O-ring size is OD=30.7 mm ID=23.7 mm
That makes it a JIS B2401 P24 o-ring.
Edzackery! :thumb

The JIS code cracker award goes to clarkdw. :congrats

JIS = Japanese Industry Standard. :news

Not sold at Harbor Freight. :shake

They'll look at you funny at the auto parts stores. :'(

(clarkdw does a Google search for Edzackery :hmm )
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clarkdw


JIS o-rings are hard to find. Some industrial suppliers will order them in for you........as long as you will buy 100. So even the most hard core Metro collector may as well support the members here who have done the sourcing for you.

Order several from Geo Glenn for the princely sum of $1 ea and you will have them when you need them.

Don't wait till you have to substitute for the real correct part. Posted Image
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Deleted User
Deleted User

Thanks for the pitch, Clark. ^o)

(Geo Glenn orders several hundred more JIS o-rings, still laughing at the Edzackery story.) :O
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rjsdotorg
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R E Member

I saw them at Grainger http://www.grainger.com/Grainger/ORing-1RJL8 $9 for 25, but 4x the price for 25x more than I need.
Now, if they had Viton maybe $8 is worth it, but I only saw 24mm x 3.5 out there.
Thanks for the package, GG, installing tomorrow.
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hotrodbod
New Member
[ *  * ]
This issue is talked about on at least 5 different postings - I know because trying to sort fact from fiction and they all helped so I thought I'd add my research to the pot. Starting at Rockauto I typed in the actual dealer part number for my 1991 Metro distributor shaft O-ring PN 96067090. This crossed over to a FelPro number 418 (for $0.55). My local parts store did not have the felpro 418 part BUT using the "INFO" button on RockAuto I came up with a whole host of interchange part numbers (including my original 96067090.) I will list all of the interchange numbers from Rock - the first (two) numbers listed are confirmed, actual part numbers from (1) GEO and (2) SUZUKI: 96067090; 33278-54E10; 10499995; 3327882010; 7700260761; 8104999950; 9009914018; 96052013; F32Z12143A; J0260761. Similar part numbers in the list may very well be alternate Geo & Suzuki numbers but I have not confirmed them. In fact, neither of the OEM part numbers crossed over to anything at my local parts store and it wasn't until I gave them the 10499995 number that something showed up. In this case the 10499995 number interchanged to a Rol Gaskets part number FP19012 (cost $1.09) and since I have the package in front of me I will list the UPC (062573709209) as well as what appears to be another couple of alternate part numbers FP-418/70015 (reminiscent of the Felpro 418 RockAuto originally came up with...) and Vict: D27228 (Maybe a Victor Reinz number??) Anyway, the name of the part on the package is for a Fuel Pump Gasket NOT a distributor gasket not that the o-ring knows the difference but I'm suspecting as a result of the fuel designation it is a Viton rubber seal. I could not confirm this easily on the Rol website and ended my research. At the same time while at the auto parts store, I had in my hand the generic SAE o-ring that many have reported success with (but that I did not trust having ran aground of this issue many years back with no satisfaction using SAE sizing) that size being ID: 15/16" OD: 1 3/16" Thickness 1/8". I can state without doubt that the sizes are in fact different and that the Rol Gaskets part number appeared to have a slightly smaller ID and OD with the thickness being very close. I suspect that my previous use of SAE sizing had that slightly larger ID and that my continued leakage was a result of that and the deformation that happens when the oversize part was compressed in the distributor base. The FP19012 did fit snugly and well and while as of this write up I haven't tested it on the car (its raining buckets) I did test fit it into a loose distributor base and it feels as a good o-ring should with no distortion so I am hoping/ anticipating that it will seal fine. If it does NOT, I will update and give a "no good" review of the Rol Gasket product though I believe the poor outcome unlikely. Also, typical O-rings found in autoparts store electrical sections or bigbox plumbing sections are likely made from Nitrile rubber (aka Buna-N) and should hold up reasonably to motor oil though probably not as well as Viton rubber. Temperature also plays a part in their longevity as well as how soft the rubber is - Buna-N usually is a "70" in softness, Viton usually a "75" but if you got the same sized o-ring but designed for high pressure applications it would likely be a "90" (a bit harder...) Hope this helps anyone else suffering this pesky and potentially voluminous leak!
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Scoobs
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:D

I just use the orings from my work, yes somewhat pricey, but simpler to just walk in and give a part number and walk out. National part number Oring # 213
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