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28 Jun 2008
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The franglais-riders
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weigh
Would any of these exhausts mentioned be significantly lighter than the standard one?
I am considering this bike (among others) for my next big trip. If a new exhaust could reduce significantly the weigh of the bike I would consider changing it.
Let me know your thoughts on that. My current bike is near 200kg, and it was sometime hard on tough trails... for my next bike, I would ideally like something near or below 150kg (without luggage).
Cheers,
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28 Jun 2008
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Maria,
With respect I can't honestly imagine that a replacement exhaust system will make that much difference to the handling or performance of your bike. Surely we are talking in terms of a few pounds at most?
You need to weigh this weight gain against the likely cost - likely to be £300 or more!
If I were you I'd stick to standard and have an extra £300 for the trip. I guess it's important to pick the right bike in the first place...
Stay safe. 
__________________
Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).
Last edited by kentfallen; 28 Jun 2008 at 14:51.
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28 Jun 2008
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I'm getting it because I was ran over by a car (which bent the exhaust and some other parts such as fuel tank, broken sidecovers, broken master brake cylinder ........... ) and even before that it was starting to have some holes on both downpipes and on the silencer because of the rust...
my bike is from 1990 and spent some years outside with just a plastic cover on top of it...
and an homologated exhaust is what I want because it can only be (at maximum level) only 4db louder than stock exhaust and I do care because I hate those loud exhausts.
Vando 
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28 Jun 2008
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Quote:
Originally Posted by Mark
Hi,
I have fitted lazer pro'duro cans with motad downpipes on both my 1988 3AJ Tenere and my partners 1991 XT600E. Both have been heavily loaded with all our gear for our big trip, with their standard rear shocks set to max preload and both have rear caliper shaped dents in the underside of their silencer
Mark
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hi mark, that is what ive heard but on my '97 they dont go anywhere near eachother, theres about an inch clearance even with the shock taken out. my can is offset to the right more than the original was, perhaps thats it but the bracket came from lazer with the can so i thought it was standard.
as to the rust, welding breaks down the intercrystaline structure between the iron chrome and nickel so you get dissimilar metal corrosion. the "stainless" exhausts on both my triumph and varadero have rusted, but nowhere near what a mild steel one wouldve done.
hi neil, yes they cost a lot brand new but i got mine 1/3price 2nd hand and i bought it because the oem had rotted out (like most of us?), not for performance or noise.
hi maria, my system is quite heavy but probably about the same or a bit lighter than the original.
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dave
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28 Jun 2008
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Dave,
Apologies if my message seemed like I was having a go. That wasn't my intent at all. Sometimes I like to take a different line than others just to encourage healthy discussion and debate. Yeah I know I'm sad!
I appreciate that sometimes riders are forced into this situation by rusting exhaust systems. I suppose that standard systems are not normally considered because genuine parts are always so damn expensive. We've all been there - a small bolt that costs £30 etc...
My main gripe is with those morons who ride around upsetting everybody with excessively loud (and unlawful) exhaust systems.
Us XT'ers must stick together...
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Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).
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29 Jun 2008
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Quote:
Originally Posted by kentfallen
Dave,
All for the sake of getting an extra 6 bhp WOW what a performance boost!
Us XT'ers must stick together...
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My two pennies worth...
6 hp is actualy pretty significant, when you consider we are talking about a power increase of over 10%. Couple that with a good weight saving on a needlessly heavy part of the std bike, and the potential lifetime of a full stainless system and come replacement time, if you plan on keeping the bike, why would you not be tempted?
I agree, you have to go for the road legal baffled version, (which is what was on my XT when I bought her), but a significant weight saving AND a significant performance gain is a no brainer, if the cost is OK.
I also think that if you're looking to make modifications purely to get more power, you're better of buying a more powerfull bike to start with. KTM spring to mind...(But don't forget the AA membership!) 
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29 Jun 2008
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Quote:
Originally Posted by pottsy
CRD Absolute Power 2 for my '02 model.Bolt-on 100% and Stainless.A bit noisy for little villages and requires upjetting but if you just pootle along you'll probably be ok without.Mines for sale (hint, hint) when i get back to Blighty as my insurance won't allow it.
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I'm interested in that end can. Please PM price and pictures.
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9 Jul 2008
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I have the predator full stainless system (road legal) on my 2003 XT. I am not bothered about performance or weight saving, just wanted to have a rust fee alternative to the original system which is a rusty pile of crap. It sounds and looks miles better than the original and I was amazed at how heavy the original system was when I removed it. I would not get to excited about weight saving and performance on the XT as that is not what the old thumper is about, if I wanted that I would buy a cr250 or somehing like. The predator system is really nice and well worth the money, I do think I need to sort out the jetting though because she does tend to backfire sometimes.
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9 Jul 2008
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Quote:
Originally Posted by Bonfireboy
The predator system is really nice and well worth the money, I do think I need to sort out the jetting though because she does tend to backfire sometimes.
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Pops a bit on the overun? Mine does too.
A plug check says the mixture is fine, I'm sure I read somewhere on here that there is a reason and a fix, but I can't find it again.
Carbs are not my thing!!
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11 Jul 2008
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I would really like to know of a fix. Predator says it should not need rejetting and I am not a mechanic. Some garage offered to fit a dynojet kit and mess around with it for £400 but I am not going for that!!! Any help would be great.
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11 Jul 2008
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It was something to do with the tickover, and how fuel keeps flowing when the throttle is closed. They don't all do it, do they?
I struggle with the search function on this website. Google seems to find answers on this site easier than it's own search does!
Let me know if you find anything, 'cos it annoys me too.
From Mikunu themselves. This explains the problem, but how do you adjust the idle air mixture screw? Trial end error?
Mikuni American Corporation
Check this out too:
KTM "popping" on deceleration - ADVrider
Last edited by angustoyou; 11 Jul 2008 at 21:02.
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11 Jul 2008
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Air mixture screw
You probably find on user manual position of idle mixture screw, it's under the carb, left, front. It's not very confortable to tune also, space for fingers is almost zero. Once that you found a practical system to screw it, turn clockwise writing down exactly how many turns it needed (say 2 and 3/4 for example). Now bring it back to original position and unscrew it half a turn, and test if popping\cracking problem is reduced.
Screw closed, all clockwise, lean mixture
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12 Jul 2008
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Brilliant! Thanks Cyberzar, especialy this!
Screw closed, all clockwise, lean mixture
Thanks again.
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17 Aug 2008
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XT Exhausts
Hi, I've fitted Motad downpipes and Arrow can on my 2002 (4PT) XT I wanted to get over the rust problem, as I live near the coast, it was a weekly chore re-painting the pipes and box. I looked at the Predator system but was advised by a guy called David Lambeth who supplies a range of after market parts for XT's to fit the Motad and Arrows, I voiced my concern to him about noise as it is a race can but he said it would'nt be too bad and he's right it's not offensive, louder sure but deeper and it fit's a treat. He supplied it for just under £300 and it probably weighs half what the original does.
Lambeths got a shop on ebay page No. 370074567903
Cheers Rob.
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18 Aug 2008
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Quote:
Originally Posted by kentfallen
My main gripe is with those morons who ride around upsetting everybody with excessively loud (and unlawful) exhaust system.
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Sir your total lack of any laws here in the United Kingdom astounds me. There is no law stating excessively loud exhaust systems are Unlawful there also is no legal requirement to have a BS kite on a silencer here in the UK and there is no legal noise limit for noise emmited from a silencer for road vehicles.
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