Oil plug diameter

All Shovelhead and other models topics
Post Reply
Sarre
Posts: 104
Joined: Sun Nov 26, 2017 5:14 pm
Bikes: 1950 HD FL customized
1971 Honda CB750 K0 chopped
2003 Buell XB12s tuned
Location: Netherlands
Has thanked: 48 times
Been thanked: 48 times

Oil plug diameter

#1

Post by Sarre »

Hey all, I got an old custom oil tank on my chopper and it's time to replace the oil plug after about 40 years. It has a side fill opening.
The diameter of the current rubber plug is between 29,5 and 30mm (±1-3/16"/1.18"). Does this correspond to the standard shovelhead plug (62625-70A) with a dipstick length of about 13cm (5.12")? The length of the dipstick is mentioned everywhere but the diameter of the plug is not.. Thanks in advance! Cheers.



RooDog
Site sponsor
Site sponsor
Posts: 1779
Joined: Tue Oct 31, 2017 1:00 pm
Bikes: 1950 Panhead, Resto-Mod
1968 90", 5 Speed Shovelhead,
1984 Custom Built Evo 100" Bagger
Location: Knoxville, Tennessee
Has thanked: 799 times
Been thanked: 670 times

Re: Oil plug diameter

#2

Post by RooDog »

I use a thermometer dipstick speced for a Softail, a little snug, but works well....
Also proves I have no need for an oil cooler on either my Shovelhead nor my big inch Evo....
....RooDog.....

Sarre
Posts: 104
Joined: Sun Nov 26, 2017 5:14 pm
Bikes: 1950 HD FL customized
1971 Honda CB750 K0 chopped
2003 Buell XB12s tuned
Location: Netherlands
Has thanked: 48 times
Been thanked: 48 times

Re: Oil plug diameter

#3

Post by Sarre »

Tell me all about it Roodog, but don’t forget to mention the diameter of the rubber plug! :-)

RooDog
Site sponsor
Site sponsor
Posts: 1779
Joined: Tue Oct 31, 2017 1:00 pm
Bikes: 1950 Panhead, Resto-Mod
1968 90", 5 Speed Shovelhead,
1984 Custom Built Evo 100" Bagger
Location: Knoxville, Tennessee
Has thanked: 799 times
Been thanked: 670 times

Re: Oil plug diameter

#4

Post by RooDog »

OK, Sarre, let's try this....
I have two oil tanks with different dip sticks. The sticks both fit either tank but I would think the longer one would give a better temperature reading.
The longer un-named one on the right is 123mm
The shorter V-Twin branded one on the left is 95mm.
DSC02938.JPG
the largest diameter of the plugs is 1.235-1.240 inches.

The necks on the oil tanks are two different IDs, 1.178, & 1.205 inches.
Both plugs will fit either tank. Here's the one on my Shovelhead....
DSC02941.JPG
Hoping this is sufficient information....
....RooDog....
You do not have the required permissions to view the files attached to this post.

Edaddy
Site sponsor
Site sponsor
Posts: 75
Joined: Tue Dec 05, 2017 8:49 am
Bikes: 1965 Panhead
1992 Jammer frame
43" Custom Springer
1991 Std Case
STD dual-plugged heads
Location: Bellingham wa
Has thanked: 6 times
Been thanked: 10 times

Re: Oil plug diameter

#5

Post by Edaddy »

I have the plug on the right in the last picture. 1.25 inch opening on my horseshoe tank. Fits snug but well.

Sarre
Posts: 104
Joined: Sun Nov 26, 2017 5:14 pm
Bikes: 1950 HD FL customized
1971 Honda CB750 K0 chopped
2003 Buell XB12s tuned
Location: Netherlands
Has thanked: 48 times
Been thanked: 48 times

Re: Oil plug diameter

#6

Post by Sarre »

This worked out great guys, thanks for the info!

Image

George Greer
Site sponsor
Site sponsor
Posts: 1668
Joined: Wed Mar 24, 2010 5:48 am
Bikes: 1942 WLA Type III
Hybrid WL/KH bobber project.
58 FL
Location: Markt Einersheim, Bayern
Has thanked: 606 times
Been thanked: 167 times
Contact:

Re: Oil plug diameter

#7

Post by George Greer »

Sarre wrote:
Fri May 22, 2020 11:01 pm
This worked out great guys, thanks for the info!

Image
Sarre,

Did you get that here in Europe? If so where.

George

Sarre
Posts: 104
Joined: Sun Nov 26, 2017 5:14 pm
Bikes: 1950 HD FL customized
1971 Honda CB750 K0 chopped
2003 Buell XB12s tuned
Location: Netherlands
Has thanked: 48 times
Been thanked: 48 times

Re: Oil plug diameter

#8

Post by Sarre »

At your favorite German supplier! :-)

George Greer
Site sponsor
Site sponsor
Posts: 1668
Joined: Wed Mar 24, 2010 5:48 am
Bikes: 1942 WLA Type III
Hybrid WL/KH bobber project.
58 FL
Location: Markt Einersheim, Bayern
Has thanked: 606 times
Been thanked: 167 times
Contact:

Re: Oil plug diameter

#9

Post by George Greer »

Not necessarily so much my favorite.............but it sure is nice for it to be so close to me.

Thanks,

George

Post Reply

Return to “Shovelhead”