Oil dipstick tube replacement on my 351 - Ford Bronco Forum
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post #1 of 28 (permalink) Old 04-15-2019, 08:48 AM Thread Starter
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Oil dipstick tube replacement on my 351

Swapping out my headers over the weekend I realized on the driver's side that the oil dipstick tube had to come out before I could pull the header (thank you Ford engineers). Anyway, after a lot of persuasion and pulling I was finally able to get the dipstick tube out of the block..I'd forgotten that they were pressed in. The tube got a little bent while I was removing it..Was able to straighten the kink out but now I can can't get the tube back in.

The tube goes in about an inch and a half and then tops..almost like it's hung up on something..Pretty sure I'm going to need a new dispstick tube..any tips/tricks on how to install? google search didn't yield much and I combed through my old engine rebuild pics nothing there..

Thanks.

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post #2 of 28 (permalink) Old 04-15-2019, 11:10 AM
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Find a steel punch that closely fits the I.D. Of the tube. That can be used to remove or intall the tubes. Digging through several toolboxes may be necessary to get the right fit. Hope this helps.
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post #3 of 28 (permalink) Old 04-15-2019, 01:27 PM Thread Starter
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that might work if the tube was straight but this tube has a couple of bends in it..found a thread on a Ford truck forum where one guy cleaned out the hole with a brass wire brush, then used an adjustable wrench around the base with some taps from a hammer to seat it..another person suggested freezing the dip stick tube then heating the block up a little bit with a torch and then trying to put it in..

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post #4 of 28 (permalink) Old 04-15-2019, 02:24 PM
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One problem I had when I swapped engines was the dipstick hole was a little large and would not hold the dipstick. I ended up using some high heat silicone to keep it in place. 4 years now going on 5 with no issues.

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post #5 of 28 (permalink) Old 04-15-2019, 02:53 PM Thread Starter
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Originally Posted by jowens1126 View Post
One problem I had when I swapped engines was the dipstick hole was a little large and would not hold the dipstick. I ended up using some high heat silicone to keep it in place. 4 years now going on 5 with no issues.
If I recall correctly, the guy who dropped the engine in also did the dipstick tube..when I pulled it out yesterday I found a bunch of RTV around the opening, so that could very well be part of the problem..going to see if I can get that hole cleaned out and try putting my old one back in..

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post #6 of 28 (permalink) Old 04-17-2019, 11:05 AM
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I have cut the side out of an old deep-well twelve point socket before to use to drive in a tube that was bendy.

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post #7 of 28 (permalink) Old 04-17-2019, 04:28 PM
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I'm guessing the RTV is impeding your progress. On mine, it was a looser fit than I expected from what I had read. I'm surprised they didn't design in some sort of shroud to keep dirt from finding its way down there, with as little holds the tube in place.

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post #8 of 28 (permalink) Old 04-18-2019, 09:06 AM Thread Starter
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Quote:
Originally Posted by Wrencher61 View Post
I have cut the side out of an old deep-well twelve point socket before to use to drive in a tube that was bendy.
Was thinking along these same lines..wound up cutting the old dipstick tube in half, and opening it up a bit so it would fit over the outer diameter of the tube where that collar is..hopefully that will do the trick..

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I'm guessing the RTV is impeding your progress. On mine, it was a looser fit than I expected from what I had read. I'm surprised they didn't design in some sort of shroud to keep dirt from finding its way down there, with as little holds the tube in place.
I was able to run a wire brush in there and can't find any evidence of RTV, I guess there could be some residual in the hole.

would have been nice if it were a simple threaded fitting like the older style.

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post #9 of 28 (permalink) Old 04-18-2019, 10:23 AM
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I have 2 extra if needed. Beware of Lokar for stock mounting location

PM if needed
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post #10 of 28 (permalink) Old 04-18-2019, 10:41 AM Thread Starter
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Originally Posted by LVSteve View Post
I have 2 extra if needed. Beware of Lokar for stock mounting location

PM if needed
you have 2 extra dipstick tubes? guess I should have asked before ordering from Bronco Graveyard..which lokar one are you talking about? That didn't come up in any of my searches.
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post #11 of 28 (permalink) Old 04-18-2019, 11:19 AM
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Quote:
Originally Posted by jermil01 View Post
Was thinking along these same lines..wound up cutting the old dipstick tube in half, and opening it up a bit so it would fit over the outer diameter of the tube where that collar is..hopefully that will do the trick..



I was able to run a wire brush in there and can't find any evidence of RTV, I guess there could be some residual in the hole.

would have been nice if it were a simple threaded fitting like the older style.
Product Cheapening Department to blame for that, probably saved a whopping twenty cents on that.

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post #12 of 28 (permalink) Old 04-19-2019, 08:21 AM Thread Starter
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Received the new dipstick tube from Bronco Graveyard, PN F2TZ-6750-A. This is supposed to be for the '92 - '96 351, for reference my block is an '89.

Right off the bat you'll notice the difference in the length of the tube that goes into the block..you can see in the picture the old one on the bottom is nearly twice as long.




New tube slid right in..no resistance and no need to press in..

On the downside, the mount that's supposed to attach the header bolts didn't even come close to lining up. Not sure if it's the way the headers are made compared to the factory exhaust manifolds, but even when I was finally able to manipulate the mount so that it would line up, the tab on the dipstick tube had to be ground down so I could get the mount to sit flush. All in all not a huge deal since I was able to make it work, but certainly not what you'd expect for a part that's supposed to be a factory repro.

It was dark by the time I finally got it installed, but I'll take a few more pics this weekend so you can see what I'm talking about.
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post #13 of 28 (permalink) Old 04-19-2019, 01:55 PM
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i have this similar issue after installing headers and i actually ended up breaking the bracket off the dipstick tube which is frustrating. then on top of that i had to bend it in so many ways the dipstick its something inside the motor and is a pain to get back in. I have been temped to get a dipstick/tube off of a van since its so much longer and would make it easier to grab with out climbing onto the truck. I would assume it would measure the oil correctly still??

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post #14 of 28 (permalink) Old 04-19-2019, 02:16 PM Thread Starter
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Quote:
Originally Posted by TravisITGuy View Post
i have this similar issue after installing headers and i actually ended up breaking the bracket off the dipstick tube which is frustrating. then on top of that i had to bend it in so many ways the dipstick its something inside the motor and is a pain to get back in. I have been temped to get a dipstick/tube off of a van since its so much longer and would make it easier to grab with out climbing onto the truck. I would assume it would measure the oil correctly still??
glad to hear I'm not the only one that had this problem..once it was mounted I used some gentle bending at the top to keep it from interfering with the oil filler cap..I mean all that open space in the engine compartment and that's where it winds up???

as far as using a tube from a van, I guess that would be possible as long as the pan is the same depth.


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post #15 of 28 (permalink) Old 04-20-2019, 10:10 AM Thread Starter
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finally got a chance to start the engine today after installing the new dipstick tube. Immediately heard a ticking sound..was thinking that my exhaust bolts still weren't tight so I went back and tightened them again..then I realized it sounded metallic, pulled the dipstick out of the tube and the sound went away..so my old dipstick is clearly hitting something in the rotating assembly..the new dipstick tube is obviously too short for my old dipstick..so I'm not sure what dipstick or dipstick tube was previously in there..anyway, can someone verify the length of a 351 W dipstick..mine measured 34 1/2 inches total length and about 31 inches from the base of the dipstick to where it seats at the top of the tube..thinking I probably need a different dipstick..

Thanks.

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post #16 of 28 (permalink) Old 04-20-2019, 12:38 PM
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I found two threads that suggest your dipstick is 10" (!!!) too long:

https://www.fullsizebronco.com/forum...ck-length.html
https://www.ford-trucks.com/forums/8...ck-length.html

Edit: Of course, that probably means your tube is longer, as well.

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post #17 of 28 (permalink) Old 04-20-2019, 02:05 PM
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When I bought an aftermarket tube for my '73 F250, I had to take some effort and compare it to the old, original one and make sure it sat the same. Wasn't a big deal, but did take some pre-planning and a little modification. At the time, I was more concerned with having an accurate reading but probably saved myself some fitment issues in the process.
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post #18 of 28 (permalink) Old 04-20-2019, 06:50 PM Thread Starter
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Thanks guys..I found a couple of other threads too, just not sure if there's a difference between the tubes like the older style that go through the side of the pan or the ones like mine that go in through the block..

found this on bronco graveyard, which says it's for a 429 - 260, measurement is 31 inches overall and 27 5/8 without the handle..

https://shop.broncograveyard.com/Dip...uctinfo/30185/

but the description says for 80 - 96 Bronco and 80 - 96 truck 4wd...F4TZ-6750-A

then I looked at this one, F2TZ-6750-A..says it's for a 92 - 96 351, listing the Bronco and F150, but it doesn't give an overall length.

https://shop.broncograveyard.com/199...uctinfo/30147/

I might be able to modify mine if I can get someone to give me the measurement off of one..

just for grins I ran the numbers off my current dipstick, e9te-6750-ca..turns out it's for a 5.0..must have used the dipstick and dipstick tube from my old engine when I did the rebuild..


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post #19 of 28 (permalink) Old 04-21-2019, 12:39 AM
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Do you think it's the tube that's hitting... or the stick?
My 95's 351 goes into the block but enters where it really shouldn't contact anything.

You can see the entry hole in the block, above the bolt in the center, at the top of the pic.


I'll add another pic from a different angle. The hole is on the bottom, left now.


You're making me glad I chose to sand and paint my oem tube though.

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post #20 of 28 (permalink) Old 04-21-2019, 08:17 AM Thread Starter
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Thanks for the pics. It's definitely the dipstick itself that's hitting something, because when I pull it out the sounds goes away.

Could be the 5.0 dipstick is so long that it's touching the pan and that's what I'm hearing..either way, I'm going to need a different dipstick.
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