honda305 Home honda305 Auctions honda305 Gallery honda305 Forum Electronic Ignition honda305 Forum honda305 Forum honda305 Forum honda305 Racing honda305 Literature

Auctions  Mailing List    Registry   Marketplace

honda305.com Forum - FULL SCREEN

honda305.com Forum

Login
□ Search
  □ CLASSIFIED_ADS
□ FAQ 
  □ SEARCH_ADS
□ 
  □ MY_ADS
Vintage Honda Owners,
Restorers, Riders and
Admirers

CB72-77 Racer

CYP77 - Police | Race Bikes | Choppers, Bobbers and Mods
Post Reply
lloydy1
honda305.com Member
Posts: 66
Joined: Sun May 24, 2015 2:29 am
Location: North Wales

Post by lloydy1 » Sat Jun 20, 2015 2:22 am

G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave

User avatar
G-Man
honda305.com Member
Posts: 5675
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
Contact:

Post by G-Man » Sat Jun 20, 2015 2:39 am

Dave

Yes, a copper gasket should work. If the pistons and head have been closely matched you may need to be careful of teh clearance if the copper gasket is thinner.

G

lloydy1 wrote:
G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

lloydy1
honda305.com Member
Posts: 66
Joined: Sun May 24, 2015 2:29 am
Location: North Wales

Post by lloydy1 » Sat Jun 20, 2015 3:44 am

G-Man wrote:Dave

Yes, a copper gasket should work. If the pistons and head have been closely matched you may need to be careful of teh clearance if the copper gasket is thinner.

G

Just measured the existing one and it comes out between 1.50 and 1.60mm. seems very thick.

I'll order a sheet of 1.50mm copper as it has no squash.

Dave

lloydy1 wrote:
G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave

LOUD MOUSE
honda305.com Member
Posts: 7810
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sat Jun 20, 2015 4:08 am

I'm about to list a copper head gasket (1,11mm thick, 59.42 at the cylinder) on eBay. .................lm

lloydy1 wrote:
G-Man wrote:Dave

Yes, a copper gasket should work. If the pistons and head have been closely matched you may need to be careful of teh clearance if the copper gasket is thinner.

G

Just measured the existing one and it comes out between 1.50 and 1.60mm. seems very thick.

I'll order a sheet of 1.50mm copper as it has no squash.

Dave

lloydy1 wrote:
G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave

lloydy1
honda305.com Member
Posts: 66
Joined: Sun May 24, 2015 2:29 am
Location: North Wales

Post by lloydy1 » Sat Jun 20, 2015 5:50 am

LOUD MOUSE wrote:I'm about to list a copper head gasket (1,11mm thick, 59.42 at the cylinder) on eBay. .................lm

Hi...That maybe a little thin for my needs. This engine seems to have been messed with a bit and the squish may have been allowed for. If I install a thinner gasket I may run into problems.

Thanks Dave

lloydy1 wrote:
G-Man wrote:Dave

Yes, a copper gasket should work. If the pistons and head have been closely matched you may need to be careful of teh clearance if the copper gasket is thinner.

G

Just measured the existing one and it comes out between 1.50 and 1.60mm. seems very thick.

I'll order a sheet of 1.50mm copper as it has no squash.

Dave

lloydy1 wrote:
G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave

User avatar
G-Man
honda305.com Member
Posts: 5675
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
Contact:

Post by G-Man » Sat Jun 20, 2015 6:50 am

Dave

Dennis Murfin told me that he set his squish clearance by assembling the head without gasket, then made sure the engine "just" turned over. Then With the gasket in place you should have a bit of allowance for rod stretch when it is running at high speed.

G
lloydy1 wrote:
G-Man wrote:Dave

Yes, a copper gasket should work. If the pistons and head have been closely matched you may need to be careful of teh clearance if the copper gasket is thinner.

G

Just measured the existing one and it comes out between 1.50 and 1.60mm. seems very thick.

I'll order a sheet of 1.50mm copper as it has no squash.

Dave

lloydy1 wrote:
G-Man wrote:Dave

Most of the gaskets would work but you would need to get a 64mm head gasket.

http://bore-tech.com/product/head-gaske ... g-bore-kit

G
Thanks G very helpful.

I was thinking about making up a copper gasket. What are your thoughts on this?

Dave
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

lloydy1
honda305.com Member
Posts: 66
Joined: Sun May 24, 2015 2:29 am
Location: North Wales

Gear Changer and Box

Post by lloydy1 » Sat Jun 20, 2015 10:24 am

Some pics of the gear changer and box.

Looks pretty standard to me, other than the gear change mechanism. Any thoughts please?

Cheers Dave
Attachments
m_100_1505.jpg
m_100_1505.jpg (53.6 KiB) Viewed 3012 times
m_100_1514.jpg
m_100_1514.jpg (60.11 KiB) Viewed 3011 times
m_100_1515.jpg
m_100_1515.jpg (45.54 KiB) Viewed 3011 times
m_100_1522.jpg
m_100_1522.jpg (67.08 KiB) Viewed 3011 times
m_100_1524.jpg
m_100_1524.jpg (63.7 KiB) Viewed 3011 times

Post Reply

 


 

CB-77 | CYP-77 | Road Test | Riding Log | Literature | Zen | Marketplace | VJ Survey | Links | Home