Combat cam and bushes

P

pierodn

Joined

Nov 10, 2012

Messages

3,154

• Sep 18, 2017

• #1

Hi.
1972 combat engine is now apart and has the SS cam with the journals not scrolled.
Both cranckases have plain cam bushes.
Is it correct?
They work fine?.
I knew that with the plain bushes you need the cam with the scrolled journals.
Please, let me understand better.
Thank you.
Piero

 

B

bill

Joined

Jun 1, 2003

Messages

2,153

• Sep 18, 2017

• #2

it is NOT correct. you MUST have one or the other scrolled and can use both. you also need to either use a flanged timing side cam bush or break off the locating tab on the second washer ( not the cone shaped one ).

I have seen 2s combat cams both ways also comnoz can scroll your cam for non scrolled bush's.

 

P

pete.v

Joined

Oct 31, 2009

Messages

5,193

• Sep 18, 2017

• #3

Scrolled Cam, non scrolled bushes = yes
Non scrolled cam, scrolled bushes = yes
scrolled cam, scrolled bushes = yes
Non scrolled cam, non scrolled bushes = NO!

 

P

pierodn

Joined

Nov 10, 2012

Messages

3,154

• Sep 18, 2017

• #4

Hi.
I absolutly agree.
But dont you think that non scrolled cam with non scrolled bushes were fitted at first from Norton Company?.
Thanks.
Piero

 

acotrel

Joined

Jun 30, 2012

Messages

14,268

• Sep 18, 2017

• #5

I also have this problem. I tried to cut the scroll into the cam using a hand-held grinder and I did a bugger of a job of it. The steel is as hard as the hobs of hell.

 

B

bill

Joined

Jun 1, 2003

Messages

2,153

• Sep 18, 2017

• #6

I doubt it.

pierodn said:

Hi.
I absolutly agree.
But dont you think that non scrolled cam with non scrolled bushes were fitted at first from Norton Company?.
Thanks.
Piero

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