Commando/T160 Blackcap offset difference?

Reggie

Joined

Jul 24, 2006

Messages

1,066

• Apr 23, 2013

• #1

Does anybody on the forum know if the offset on the inlet of the Norton blackcaps is the same as the Triumph T160 blackcaps, as I am considering buying some "straight through" black cap style silencers and being a cheapskate would like to be able to fit them on both bikes as and when I feel like an exhaust note change.

 

B+Bogus

Joined

Jun 28, 2009

Messages

2,188

• Apr 25, 2013

• #2

Reggie,

I can't give a 'definitive' answer, but aftermarket black-caps have different part numbers for Tridents and Commandos, so my assumption is they're different.
I'd guess it's because of the way they mount - a long 'U' channel with slots on Triumphs, and threaded bosses for Nortons - but it's just a guess, not having a Triumph one to hand.

Probably doesn't answer your question!

Couldn't help noticing the words 'cheapskate' and 'Yorkshire' in the same post... surely not! :wink:

 

L.A.B.

Moderator

VIP MEMBER

Joined

Nov 20, 2004

Messages

20,422

• Apr 25, 2013

• #3

B+Bogus said:

I can't give a 'definitive' answer, but aftermarket black-caps have different part numbers for Tridents and Commandos, so my assumption is they're different. I'd guess it's because of the way they mount - a long 'U' channel with slots on Triumphs, and threaded bosses for Nortons - but it's just a guess, not having a Triumph one to hand.

Click to expand...

They are different internally. The original T160 black caps also had the threaded boss mountings.

 

Reggie

Joined

Jul 24, 2006

Messages

1,066

• Apr 25, 2013

• #4

I'll have to flip a coin and either get some T160 straight throughs from LP Williams or Norton mk3 straight throughs from RGM and then see if they fit both machines......... although the Norton type are cheaper

Thanks for the replies.

Andy knows which ones I'll buy :lol: :lol:

 

P

Paul Bryant

Joined

Feb 22, 2005

Messages

23

• Apr 25, 2013

• #5

Reggie, the offset is the same for both Norton and Triumph.
Do note that the original Black Cap Silencers, whist externally and dimensionally similar are not interchangeable between Norton and Triumph as the internals are different.

Did you read that I am offering free shipping for any orders placed within the next week ?

 

M

Matt Spencer

Joined

Jul 25, 2010

Messages

5,865

• Apr 25, 2013

• #6

The infernal internals . ALL RIGHT THEN , which ones are the freeer flowing , l4ess restrictive , bigger boogie then . ?

Preumeably the Triple needed less restriction to meet the noise regulations ? so theyre FASTER MUFFLERS . :| :idea: :?:

 

P

Paul Bryant

Joined

Feb 22, 2005

Messages

23

• Apr 25, 2013

• #7

I don't know about that, All I know is each unit was designed for each specific engine, a Twin or a Triple.

I could supply you a pair of my Straight through Black Caps, that would solve all your problems.


http://www.vikingexhaust.com/getPart.asp?id=55

 

B

Biscuit

Joined

Sep 10, 2012

Messages

650

• Apr 25, 2013

• #8

If the offsets are the same I wouldn't worry about the originals having design specific internals for the different engines as you're talking about straight through copies with basicly no sophisticated internals, correct?

 

P

Paul Bryant

Joined

Feb 22, 2005

Messages

23

• Apr 26, 2013

• #9

That is correct.

 

Reggie

Joined

Jul 24, 2006

Messages

1,066

• Apr 26, 2013

• #10

Paul Bryant wrote;

Reggie, the offset is the same for both Norton and Triumph.

Click to expand...

I thought they would be, but thanks for the confirmation.

Paul Bryant wrote;

Did you read that I am offering free shipping for any orders placed within the next week ?

Click to expand...

You know how to get a Yorkshiremans attention :lol: :lol: