Author Topic: Dipstick and tube  (Read 197 times)

Chaz

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Dipstick and tube
« on: September 26, 2017, 08:02:36 PM »
Hello everyone. I have a 79 403 powered TA that's been parked in my garage since around 1993. I started playing around with it recently and got it running again. I noticed oil leaking out and causing smoke near the oil Dipstick. When I checked the Dipstick tube it was very loose so I removed it. It appears to have not broken off in the block. I went down to the auto parts store this evening to find a replacement. They offered three different ones I could order, which include a Mr. Gasket brand. I had them pull up the image of the Mr. Gasket Tube and the end that goes down into the block had two "rings" on the tube where it sits against the block. My current one has three of these rings. The one I was viewing was also much straighter than my tube. I'm not sure if my friends and I bent it back in the 90s or if it came that way. I also noticed that two of the Dipstick tubes offered were 19.5 inches long while the other was 20 inches long. Of course I could measure my current bent one but I'm not so sure it was the correct tube to begin with. Do any of you know the true replacement tube length? Which brand offers a true replacement? Thank you so much for your input.

Grand73Am

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Re: Dipstick and tube
« Reply #1 on: September 27, 2017, 09:53:33 AM »
Don't buy those, since they are likely for Chevys and won't be right.

You can still buy the real thing. A new genuine Olds dipstick(indicator), GM part #419242, from gmpartsdirect.com is $10.78 + shipping.

Here's the new genuine Olds tube on eBay, GM #417090 :   http://www.ebay.com/itm/1974-81-Oldsmobile-Dipstick-Tube-NOS-260-307-350-403-Motors-GM-417090-/330697370719?epid=656833627&hash=item4cff196c5f:g:fJUAAOSwZQRYfSuF&vxp=mtr

So, if you can buy both of those, you'll be set.
Steve F.

Chaz

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Re: Dipstick and tube
« Reply #2 on: September 27, 2017, 10:38:15 AM »
Thanks Steve.

Going to order it. I just looked at the pic in the eBay link and compared it to the one I have. Bent the sand as mine with the three "rings" but mine apparently had a few custom bends after I purchased it. Thanks again.

Grand73Am

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Re: Dipstick and tube
« Reply #3 on: September 27, 2017, 12:09:09 PM »
You're welcome  :) .
Steve F.

joeno49

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Re: Dipstick and tube
« Reply #4 on: September 30, 2017, 02:11:10 PM »
This happened to me today; went to check oil on my 403 and couldn't get the dipstick out.  Noticed the tube was very loose.  After I tried to reseat the dipstick in the tube to seal it, bunch of sparks and this happened:




I couldn't get a picture of the hole in the block but it looks like there is still a piece there.  Does this mean the oil pan has to be dropped and the the rest of it removed that way? 

Re: Dipstick and tube
« Reply #4 on: September 30, 2017, 02:11:10 PM »

Aus78Formula

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Re: Dipstick and tube
« Reply #5 on: September 30, 2017, 04:04:17 PM »
Yes the tip is still in the block. Find a bolt that is a tight thread in fit and it should work it's way out with the bolt by turning and pulling it.

joeno49

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Re: Dipstick and tube
« Reply #6 on: October 02, 2017, 07:08:19 PM »
Thanks for the help.  Worked it for about 2 hours and I don't think it's moved an inch.  I was able to get a bolt in there and have tried just straight pulling it out...and trying to back the bolt out while pulling. 

Aus78Formula

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Re: Dipstick and tube
« Reply #7 on: October 02, 2017, 07:32:31 PM »
Gotta be careful not to make any filings or drop pieces trying to grip the tube or you'll have to drop pan anyway.

Re: Dipstick and tube
« Reply #7 on: October 02, 2017, 07:32:31 PM »
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