Author Topic: O Ring Sizes as per Honda Parts Book  (Read 798 times)

Offline paulbaker1954

  • SOHC Pro
  • Posts: 696
  • I'll just be 5 minutes dear!!
    • View Profile
O Ring Sizes as per Honda Parts Book
« on: May 14, 2019, 10:54:30 AM »
I just wanted to check I am right in my assumption.....

 Are O ring dimensions in the Honda parts manual quoted as Inside Diameter and Thickness which is my conclusion
If you think there's light at the end of the tunnel it's usually another train !!

2016 Yamaha MT09 Tracer
1971 Honda CB500 Four K0

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
  • Grogu
  • *
  • Posts: 8205
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #1 on: May 14, 2019, 11:36:44 AM »
Indeed you are correct Paul. But, the sizes only relate if you are using OEM gaskets. Some after market gaskets are thicker meaning the OEM O ring sizes do not seal.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline paulbaker1954

  • SOHC Pro
  • Posts: 696
  • I'll just be 5 minutes dear!!
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #2 on: May 14, 2019, 11:43:56 AM »
Indeed you are correct Paul. But, the sizes only relate if you are using OEM gaskets. Some after market gaskets are thicker meaning the OEM O ring sizes do not seal.

Thx Julie any idea what the OEM Head Gasket thickness is?

I should add I got a full gasket set from DS as it was shown as NE on their website but came on a plain card back with no branding so no idea of the manufacturer.

Hopefully head gasket and O rings should be compatible but am now worried -  wondered if any one else had used the DS set recently
« Last Edit: May 14, 2019, 01:17:48 PM by paulbaker1954 »
If you think there's light at the end of the tunnel it's usually another train !!

2016 Yamaha MT09 Tracer
1971 Honda CB500 Four K0

Offline Seabeowner

  • SOHC Pro
  • Posts: 985
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #3 on: May 14, 2019, 03:54:42 PM »
I used a DSS set for 500 about six months ago, but have only competed about 20 miles since..ok so far.
Also bought a complete gasket set for one of my 550s from M&P in their 20% off for £36. It is NE brand, but not used it yet and they don't seem to have a 500 set listed.
Phil
1971  CB500K0  Candy Jade Green or Candy Gold
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange
1978  CB550K     Excel Black

Offline paulbaker1954

  • SOHC Pro
  • Posts: 696
  • I'll just be 5 minutes dear!!
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #4 on: May 14, 2019, 04:14:48 PM »
I used a DSS set for 500 about six months ago, but have only competed about 20 miles since..ok so far.
Also bought a complete gasket set for one of my 550s from M&P in their 20% off for £36. It is NE brand, but not used it yet and they don't seem to have a 500 set listed.

Did your DSS set come as NE branded or just on a plain card (if you can remember)
If you think there's light at the end of the tunnel it's usually another train !!

2016 Yamaha MT09 Tracer
1971 Honda CB500 Four K0

Offline paulbaker1954

  • SOHC Pro
  • Posts: 696
  • I'll just be 5 minutes dear!!
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #5 on: May 15, 2019, 08:35:22 AM »
OK i measured up the new gasket and o ring from the DSS kit and also measured up the old ones taken off (OK I know these will have been compressed but I was curious)

The pic shows the measurements

1) Does anyone have these measurements for NOS parts

2) Can anyone confirm if the DSS parts are going to be OK


If you think there's light at the end of the tunnel it's usually another train !!

2016 Yamaha MT09 Tracer
1971 Honda CB500 Four K0

Offline K2-K6

  • Grogu
  • *
  • Posts: 5232
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #6 on: May 15, 2019, 01:31:13 PM »

Offline paulbaker1954

  • SOHC Pro
  • Posts: 696
  • I'll just be 5 minutes dear!!
    • View Profile
If you think there's light at the end of the tunnel it's usually another train !!

2016 Yamaha MT09 Tracer
1971 Honda CB500 Four K0

Offline JamesH

  • SOHC Jedi
  • Posts: 2846
    • View Profile
Re: O Ring Sizes as per Honda Parts Book
« Reply #8 on: May 15, 2019, 10:45:07 PM »
Delta worked for me lol

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal