[TR] Opening Up Connecting Rod Oil Passages

Jerry Van Vlack jerryvv at roadrunner.com
Sun Dec 4 07:30:29 MST 2016

I guess I wonder why you want to use something that is rusted and possibly the entire length of the hole might be rusted. How can you assure you’ll get all of the rust cleaned and that small bits won’t break loose later? I’d be looking for good replacements. 

From: Geo Hahn 
Sent: Sunday, December 4, 2016 8:46 AM
To: Bill Brewer 
Cc: Triumphs 
Subject: Re: [TR] Opening Up Connecting Rod Oil Passages

Or perhaps (as you mention) a pipe cleaner.  They are commonly sold in 12" lengths as a craft item.  This is the Amazon listing but places like Michaels probably have a selection.



On Sat, Dec 3, 2016 at 7:48 PM, Bill Brewer <billbrewer59 at yahoo.com> wrote:

       So I am rebuilding a Standard Vanguard engine for a 1953 Morgan Plus 4. The connecting rods have been laying on a shed floor for decades. They cleaned up nicely, but the oiling hole through the connecting rod to the small end bushings were all rusted solid. I made a tool out of a piece of 1/8 brass welding rod. I pounded the end flat, like a screwdriver, and pounded it in while turning with a small Vise-grips. It got the hole opened and rust poured out. The hole is about 0.180” diameter. I’ve been trying to find a long 3/16ths tube brush (like a pipe cleaner) to clean them out better, but no one makes one long enough. The brush needs to be about 5” long and the longest that McMaster Carr has is 3”. I could pull the small end bushings out and go at it from both ends, but the bushings in there fit the wrist pins perfectly and I would rather not mess them up if I can help it.

       I have been considering buying a 12” long 3/16ths (.188”) drill bit and running that through. It might open up the hole a little bit, which might not be a bad thing.


       Has anybody else been here? How did you get by this?


       Bill Brewer

       Tehachapi, CA

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