« previous next »
Pages: [1]   Go Down

Author Topic: Hm300 baffle bolts  (Read 161 times)

0 Members and 1 Guest are viewing this topic.

Offline slyguy

  • Enthusiast
  • **
  • Posts: 184
Hm300 baffle bolts
« on: December 13, 2025, 02:44:29 PM »
It seems Honda put a gob of weld at the end of the 6mm bolts, correct? Does one’ grind off these with say a dremel? Otherwise they break & have to be drilled out & tapped which doesn’t always work out so well! Parts book just says 6x12mm, I would think chrome not zinc…?
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 21,502
  • Saver of unloved motorcycles.
Re: Hm300 baffle bolts
« Reply #1 on: December 13, 2025, 03:08:43 PM »
 I don't remember them being tack welded but it's been a while since I had new ones. Either way, I would grind the ends before twisting on them.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 11,739
  • 1969 cb750
Re: Hm300 baffle bolts
« Reply #2 on: December 13, 2025, 04:48:02 PM »
Never thought of that and you may be right. Some come out easily and others do seem to be tacked in place. Giving them a little buzz might be a good idea!

P.S. the latest replica pipes I got from Yamiya come out easily, no issue.
Logged

Offline slyguy

  • Enthusiast
  • **
  • Posts: 184
Re: Hm300 baffle bolts
« Reply #3 on: December 13, 2025, 08:07:41 PM »
Yea these are old/original I believe. I tried heat beforehand but ended up drilling out 2 & still have that “wad” of weld left behind.
« Last Edit: December 13, 2025, 08:22:59 PM by slyguy »
Logged
Pages: [1]   Go Up
« previous next »