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Does the dipstick tube take an O-ring?
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When I removed the dipstick tube I was surprised to see there wasn't an O-ring. But I ended up finding one when I pulled the oil pan. It was on the rim inside the oil pan tube. It's possible one was added when the engine was rebuilt long ago.
Word is dipstick tubes don't take an O-ring because the tube is press fit and they're not necessary? I asked a transmission shop for an O-ring, and they also say the tube doesn't use one. So my question is, does the original oil dipstick tube use an O-ring or not? Thank you |
Re: Does the dipstick tube take an O-ring?
never seen or used an o-ring on sbc or bbc such as yours....but have used a small dab of sealer on the tube at the time of install to prevent any seepage.
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Re: Does the dipstick tube take an O-ring?
+1 I’ve always put a small amount of black RTV on them.
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Re: Does the dipstick tube take an O-ring?
yep, no-o-ring. It's a press fit, that's all. But RTV not a bad idea for insurance. I don't think the factory used any. But then again, these engines were exactly known for being leak-resistant ... :)
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Re: Does the dipstick tube take an O-ring?
It is not a press fit on my 402. It fits loosely but it does have a bracket welded on with a bolt hole to mount to the exhaust manifold so it cannot come out. I put a small o-ring on it just because.
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Re: Does the dipstick tube take an O-ring?
I tried putting an o-ring on one, was unsuccessful even with the thinnest one I could find.
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Re: Does the dipstick tube take an O-ring?
No O-ring. I've had the loose complete pull out type too. A light hit with a hammer on the upper area before the seat takes care of that problem.
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Re: Does the dipstick tube take an O-ring?
That picture looks like a Moroso pan or similar, not a stock pan. No o-ring that I know of on the stock setup, but probably on some of the aftermarket...
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Re: Does the dipstick tube take an O-ring?
no O ring but you can use RTV snot
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Re: Does the dipstick tube take an O-ring?
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What engine do you have?
My '70 Blazer has it's original 255hp 350, and the dipstick tube is bossed into the block on head mating surface |
Re: Does the dipstick tube take an O-ring?
Big blocks have the dipstick coming out of the right side of the oil pan.
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Re: Does the dipstick tube take an O-ring?
Thanks, never owned a BB, still learnin everyday!
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Re: Does the dipstick tube take an O-ring?
No O-rings that I have ever seen on the oil stick. Transmissions do though!:chevy:
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Re: Does the dipstick tube take an O-ring?
Every big block I have had did use a o- ring,always put on on and a dab of silicone
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Re: Does the dipstick tube take an O-ring?
FWIW my “how to rebuild big block chevy engines” book says there is an o-ring.
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Re: Does the dipstick tube take an O-ring?
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Seemed to work with an O-ring, I don't recall a leak. I'll see if I can match it up and/or do as suggested above and seal it. Edit: This might be it. Part number 274244.https://www.yearone.com/Product/1964...l-camino/8758n Per the part's book, 274244 was used on all engines.......Don't shoot the messenger(s), miles may vary;) I ordered one off Ebay and will advise of fit. EDIT: I got the 274244 O-ring. Looked right, fit on the tube right, too big for the oil pan tube. The old one could be just dried up, but I believe it's plastic instead of rubber. |
Re: Does the dipstick tube take an O-ring?
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Re: Does the dipstick tube take an O-ring?
Lets stop all the B.S. Big Block Chevys take a O ring, small blocks Do not,End of it!
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Re: Does the dipstick tube take an O-ring?
Now is it a square-cut o-ring or traditional round type?
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Re: Does the dipstick tube take an O-ring?
It is a round style O-ring
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Re: Does the dipstick tube take an O-ring?
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Re: Does the dipstick tube take an O-ring?
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Is that possibly a straight tube that someone bent? Mine has two clean bends (not 100% sure of what it originally came from).
Attachment 1847522 |
Re: Does the dipstick tube take an O-ring?
Some were bent like that mainly to miss the A/C unit and non A/C were straight.
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Re: Does the dipstick tube take an O-ring?
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Re: Does the dipstick tube take an O-ring?
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The old one may just be dried up, but I believe it's plastic instead of rubber. |
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