Home › Forum › Ask A Member › 1952 Martin 75 Twist Shift Rod Knocking
- This topic has 16 replies, 9 voices, and was last updated 1 month, 3 weeks ago by
seakaye12.
-
AuthorPosts
-
November 12, 2025 at 10:37 am #301415

In 2016 I got this Martin for $50.00. Spent a bit over $250.00 in seals, impeller, and gaskets such in 2017, and used it to get around the lake that summer . I’m really into the pre. WW-II stuff but I found this to be great motor. Well worth what I have in it. Replaced the original gas tank & covers with some where the decals were mostly gone, and gave it to my son-in-law in 2018 to use, and he does use it. This summer he flagged me down and said the motor was knocking. I should have towed him back, but thinking it was just a rod knocking, I told him to just take it easy, and you should make it back. It was just under 2 miles back to the camp. Had a couple motors ahead of his (pictures & some summer videos to come) but now it was time to look into the TS. Well it wasn’t a rod. I picked up some Marine JB weld. That ought to work don’t you think?
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
November 12, 2025 at 11:13 am #301420What fuel was it running on?
November 12, 2025 at 4:09 pm #301421I hope you got the “Extra Strength” JB Weld!
Prepare to be boarded!
November 12, 2025 at 11:39 pm #301448I bet one of those Pakistani truck repair shops you see on YouTube could weld right up for you! Those guys can fix anything with a torch, a press and a lathe.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."November 13, 2025 at 5:55 am #301449Oooopsie…..
http://www.richardsoutboardtools.com
classicomctools@gmail.comNovember 13, 2025 at 2:22 pm #301466Now that will be a boat house repair to boast about!
dale
November 13, 2025 at 10:02 pm #301482
Now that will be a boat house repair to boast about!
dale
I don’t think the hot glue gun is going to work on this on one. First time I’ve been inside of one of these. They refer to this as a poppet valve system however, there are cams that may override the crankcase pressure and vacuum? Here are some pictures.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
1 user thanked author for this post.
November 15, 2025 at 10:16 am #301517November 15, 2025 at 4:54 pm #301538Tubs,
You’ll have him back on the lake in no time!
David Bartlett
Pine Tree Boating Club Chapter"I don't fully understand everything I know!"
November 15, 2025 at 6:32 pm #301543That ebay crank looks to be in really good condition – nice find.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings." -
AuthorPosts
- You must be logged in to reply to this topic.







