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#523161 - 01/15/14 5:40 pm Siamese or TT pipe  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
Now I am getting close to having completed the rear sets on the A65, it is completely clear (although I did guess before) that I can not run a standard exhaust setup as the rear set brake pedal won't come near the silencer!

So I am faced with a Choice - but it means new exhaust system (and more money DOH!)

I could fit the clubmans type Siamese with the clubmans silencer - a nice looking setup, and if I avoid armours, then I should get some nice bends on the pipes

Or fit a set of TT pipes, I can add some kick outs and have silencers poking outwards (as its a road bike, I don't think id be popular running open pipes)

or try and some silencers that will work with the setup.

I have found in the past that lengthening the pipes seems to bring the torque peak down and doesn't rev out as well as a short pipe setup.

Any advice or tips appreciated.

TIA


beerchug
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#523179 - 01/15/14 9:28 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Oct 2009
Posts: 418
pushrod tom Offline
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pushrod tom  Offline
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Joined: Oct 2009
Posts: 418
new jersey usa
Allan, I have had excellent results with the Siamese just as you describe it. Much better torque/power almost everywhere with a minor sacrifice at the top. The TT pipes will be weaker in all useable rpm areas. Those are the dyno and seat of the pants facts. PRT

#523181 - 01/15/14 9:44 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Jan 2012
Posts: 255
Roger Gulledge Offline
BritBike Forum member
Roger Gulledge  Offline
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Joined: Jan 2012
Posts: 255
Oahu Hawaii USA
Allan...I just installed Siamese pipes on my bike because of interference with the left silencer and rear sets. I found a used set on eBay for a good price. Was very happy with what showed up at my door...never know what your going to end up with a used eBay item.

Don't know if they are old BSA factory made or not, thick wall pipe and old heavy chrome that was in pretty good shape.

I can tell you that I saw quite a bit of mid range performance pick up...it just goes through the RPM'S a lot faster.

Wasn't sure if I wanted to give up the sound and look of twin Brit pipes. To tell the truth I really like the new sound, still sounds like a Brit twin just a bit more mellow.



There was no crossover tie with them so I came up with this.



I used one of my old megs with a kick up so it came just under the footrest.



I even like the look, left side has more of a race bike look to it. So I say go with the Siamese pipes.






Last edited by Roger Gulledge; 01/15/14 9:53 pm.

Roger G
70 Thunderbolt
#523185 - 01/15/14 10:08 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
Cheers guys. I was hoping you both would answer.

Tom, just the answer I was hoping for!

Roger, I see you have kept with the megaphone. I was thinking of sticking with one of my straight through Brituro muffler or using the proper LC style muffler.

Do you have a link from the eBay pipes? I've seen some which fit the frame nicely like the originals and the armours ones I bought once had a real ugly wide bend on the LHS pipe. Stuck out a long way! That's how I ended up fitting twin pipes.

Cheers


beerchug
#523190 - 01/15/14 10:56 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Jan 2012
Posts: 255
Roger Gulledge Offline
BritBike Forum member
Roger Gulledge  Offline
BritBike Forum member

Joined: Jan 2012
Posts: 255
Oahu Hawaii USA
Allan, This was a old used set that I got on eBay. They went on nice with good clearance.

Seller has a mixed bag of used parts he sells.

ebay seller

Last edited by Roger Gulledge; 01/15/14 11:00 pm.

Roger G
70 Thunderbolt
#523239 - 01/16/14 8:06 am Re: Siamese or TT pipe [Re: Roger Gulledge]  
Joined: Dec 2001
Posts: 123
Jeff B Offline
BritBike Forum member
Jeff B  Offline
BritBike Forum member

Joined: Dec 2001
Posts: 123
Germany
Allan, can't reply on the siamese system, but what I found with new Brituro A65 silencers is that the fit,
sound and performance is good, but after just approx. 1000 miles one of them disintegrated on the road,
I lost the complete welded-on rear part with all baffles.
The other side started to rattle inside as the baffle came loose. Not what I expected.
What was amazing though was the increase in power and rpm's.
I run pipes without balancer but with only one empty silencer with the lost end portion the bike ran like wild. I was really impressed! It was very loud though.


Jeff B.
__________________
67'Hornet
71'B50SS
73'Ducati 450 SCR
95'Ducati 900 SL
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#523243 - 01/16/14 8:45 am Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
Thanks for your input Jeff, I have to say I have been using Brituro silencers on my A65 (about 3000 miles) and Honda 400/4 (aprox 8000 miles) and have been very lucky in that respect.

I have to say it is strange that with one side being upset the bike ran so well.


beerchug
#523278 - 01/16/14 1:01 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
I have contacted one of the suppliers on ebay (Classic bike shop) They tell me these pipes (in the link) are T.J Wassel pipes and look about identical to quite a few that I have seen for sale including Brit Cycle

Has anyone used these particular pipes? can you post a photo of your bike with them on? and I would be grateful to hear your views on them: the fit, chrome, how well they keep their appearance.

Many thanks

Al


beerchug
#523296 - 01/16/14 2:29 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
Anyone know who's bike this is?


I really like the setup and a photo of this was my PC pinup ( wallpaper) for a good while


beerchug
#523355 - 01/16/14 10:25 pm Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Jan 2004
Posts: 3,515
DMadigan Online content
BritBike Forum member
DMadigan  Online Content
BritBike Forum member

Joined: Jan 2004
Posts: 3,515
ca, us
That is the early factory siamezed pipe, '64 Rocket? They might not work as well on a single carb since you cannot adjust for the difference in pipe length.

#523386 - 01/17/14 3:47 am Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Apr 2005
Posts: 2,332
Mark Parker Offline
BritBike Forum member
Mark Parker  Offline
BritBike Forum member

Joined: Apr 2005
Posts: 2,332
Bega NSW Australia
Later Firebird style are good, they have a balance pipe down near the mufflers. I've experimented with bigger dia versions with a good X connector and two mufflers that gave very good top end. Maybe some closer to std dia with X connector could be nice and look good esp if made in stainless. Also earlier style high pipes one down each side can be nice, but may loose a little compared to ones with X connector which the both up the same side lend themselves to.


mark
#523410 - 01/17/14 11:52 am Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Aug 2001
Posts: 792
Richard Phillips Offline
BritBike Forum member
Richard Phillips  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 792
San Luis Obispo, CA
Here's mine:



#523411 - 01/17/14 11:55 am Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: May 2013
Posts: 4,533
Allan Gill Offline
Allan Gill  Offline



Joined: May 2013
Posts: 4,533
Rotherham - S. Yorkshire
Cheers Rich', the pipe bends are very much like the one I pictured (nice and close to the frame) Can you tell me where you bought them from, or if you know the manufacturer?

Cheers


beerchug
#523538 - 01/18/14 10:38 am Re: Siamese or TT pipe [Re: Allan Gill]  
Joined: Oct 2009
Posts: 418
pushrod tom Offline
BritBike Forum member
pushrod tom  Offline
BritBike Forum member

Joined: Oct 2009
Posts: 418
new jersey usa
Rich, Fabulous looking bike! My own Hornet looked about like your bike when I was street riding it. Siamese, Goldie, Big Spitfire tank, mandarin. I have a bit of a connection to SLO. My mom grew up there where granddad was a fixture at Cal Poly for many years. He is known as the father of Poly Royal. Wish I could live in 2 places. PRT

#523725 - 01/19/14 3:19 pm Re: Siamese or TT pipe [Re: Roger Gulledge]  
Joined: Oct 2001
Posts: 541
Ed V Offline
Sponsor Member
Ed V  Offline

Sponsor Member

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Posts: 541
Howard City, MI
I like the look Roger, nice


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