SF1 exhaust

T

tyelav13

Hero member
Location
Wales (gods own country)
Hi all, a quick question. My SF1, I will be looking to change the exhaust in the new year as I find the original (which will be stripped and rechromed) a little muted. I am looking for recommendations as I am looking to remove or use a less restrictive cross over pipe. I had intended keeping the downpipes but have seen ones advertised that eliminate the crossover pipes and attach to the silencers - anyone got any experience of these? What are the best silencers  to use with regards to sound and power? I have read that not using the crossover pipe loses midrange, is this correct?  Sorry for the drawn out questions and thanks in advance for any replies/advice. Tyrone.
 
Like Tony W's Twisted Sister, my SF1 runs separate pipes and Jota silencers - it was like that when I bought it and I haven't been bothered to change it. Sounds, erm, growly.

Now I ain't recommending this, 'cos when you go out, people will come and point at your bike and say "Those aren't right." and "Why did you do that to it" and "I used to own a Black Shadow, you know." and stuff like that.

T's bike here

http://www.laverdaforum.com/forum/index.php?topic=84016.0

Mine's here (thanks to Neil D)

http://www.flickr.com/photos/22730494@N06/6999138494/#in/set-72157629971260255

Point I'm trying to make is that the downpipes under the engine look cool IMHO. If I had the cash I'd splash out on an SFC system with the dual slash cut pipes.

Someone's gonna come along and say "You'll need a new center stand if you do that. I used to own a Black Shadow, you know." in a moment <sigh!>

Oh yea. My 850cc 270 degree SF3 ran separate pipes with "generic" Dunstall silencers with no probs.

H.
 
hi my SF1 has a set supplied by Richard Slater and has no cross over pipe and sounds ace if fact it sounds like a well sorted commado.
safe riding regards Andy
 
Running without a junction apparently detracts from midrange power. I have run without junction almost since my SF2 was new (after I crashed from grounding the junction in a corner). I cannot say I have ever noticed the difference from bikes with or without, but a dyno would confirm it either way. My road SF2 has Duc Conti copies and sounds great. The headers were bent up as far as practicable and have stubs added on to meet the mufflers.
One issue with removing the junction is vibration fractures of either header pipe/studs or muffler/mount which I have seen and experienced. It seems best to rubber mount the mufflers and provide a rubber mount near the end of the header pipe; not just a rubber at the muffler bracket.
I like the idea of under-engine headers, for cornering clearance, and reckon the Jota pipes look great, I?m glad these pics got posted. How much modification have the Jota "mufflers" needed? I am thinking of this mod myself but would be fitting a modified centrestand a?la SFC with mounting points closer together to accommodate the pipes. I hate only having a sidestand, would prefer only a centrestand.
 

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Lee,

I see you have Yamaha calipers fitted up front, do they fit without adapter?  (pic is too dark)

piet
 
No, you're not cross-eyed...yet.

Tippie has 17 inchers front and rear. :o

Forks and rotors look like stock Ceriani and Brembo to me.

piet
 
Hey, Piet.
The monoblocs have bolt spacing 3mm more than the Brembos. I wouldn?t do it today but I simply elongated the holes 1 1/2 mm each. 3mm spacers and they are mounted. I could prob dab a bit of weld in there, still tons of metal.
Back on thread, when I saw you had a comment on this thread I was sure it would be about midrange  :D
 
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