« previous next »
Pages: [1]   Go Down

Author Topic: Bored .50 over  (Read 1842 times)

0 Members and 2 Guests are viewing this topic.

Offline Lost and Confused

  • Bob
  • Enthusiast
  • **
  • Posts: 209
  • An old fart !!
Bored .50 over
« on: February 21, 2013, 01:21:00 PM »
Please don't horse whip me for this question. Engine has been .50 over bored, do I need .50 over gaskets. If I do , where can I find them.


Thanks, Bob
Logged

Offline XLerate

  • Full Member
  • *
  • Posts: 97
Re: Bored .50 over
« Reply #1 on: February 21, 2013, 05:16:18 PM »
Quote from: fatslob-2008 on February 21, 2013, 01:21:00 PM
Please don't horse whip me for this question. Engine has been .50 over bored, do I need .50 over gaskets. If I do , where can I find them.


Thanks, Bob

Bored .50 over as in .50" as in 1/2", or bored .050" over? and is it inches or millimeters over? Most likely it's .050 and no, you wouldn't need different gaskets if that's the case. Find out if it's mm or inches though.
Logged

Offline HondaMan

  • Someone took this pic of me before I became a
  • Really Old Timer ...
  • *******
  • Posts: 14,114
  • ...not my choice, I was nicknamed...
    • Getting 'em Back on the Road
Re: Bored .50 over
« Reply #2 on: February 21, 2013, 05:16:41 PM »
No, the stock Honda gasket fits them up to 1.00 mm oversize.  ;)
Logged
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline faux fiddy

  • Just becaus I'm the second post on the pissed off thread doesn't mean I'm an
  • Old Timer
  • ******
  • Posts: 4,810
  • bike in a box
Re: Bored .50 over
« Reply #3 on: February 21, 2013, 06:30:42 PM »
I got a set of cruisin' image 400 pistons that I might use sometime that make it a 450 or 436 or something like that. Threw the box in the woodstove and found the head gasket when digging out the ashes. D'OH!

I guess that's a big enough difference (several mm) on the 350 bores that I will have to see if I can get them to $end a new one.
Logged
^^^^^^^/l^^^^^^^^^^^^^^/l^^^
. . ______/ l_________________/  l
<'  '  '   '  o .  . . . . . . .................(
 ' VVVVV'   ')))))____>-''''''''''''''''''\  l
' . vvvv_   -              -                 \/

Offline Lost and Confused

  • Bob
  • Enthusiast
  • **
  • Posts: 209
  • An old fart !!
Re: Bored .50 over
« Reply #4 on: February 21, 2013, 07:10:54 PM »
My bad guys, I did mean .050 over. Been 40 years since math class.  And thanks for the answer. This is my first engine rebuild, and needed help. Hope to have pics of finished bike maybe by May
 or June.


Bob
Logged

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: Bored .50 over
« Reply #5 on: February 21, 2013, 08:29:01 PM »
Quote from: fatslob-2008 on February 21, 2013, 07:10:54 PM
My bad guys, I did mean .050 over. Been 40 years since math class.  And thanks for the answer. This is my first engine rebuild, and needed help.

You were probably correct the first time.
.5mm is Honda second oversize.

.050" would be 1.27mm over - a highly unlikely piston size.
.050mm would be .0019685" over - another highly unlikely size.
and .5" - 12.7mm over?

Keep us posted on the progress.
Logged
Pages: [1]   Go Up
« previous next »