Jeremy82zx Posted June 28, 2007 Share Posted June 28, 2007 It is the quiet exhaust off of a 2004 husqvarna tc450 dirtbike. Since i have the loud exhaust on my bike, I plan on putting this on my 280zx tommorrow just to see how it sounds. Has anyone else tried this? Quote Link to comment Share on other sites More sharing options...
MrFancypants Posted June 28, 2007 Share Posted June 28, 2007 Im thinking a good analogy would be a sumo wrestler blowing through a swizzle stick. - Greg - Quote Link to comment Share on other sites More sharing options...
Jeremy82zx Posted June 28, 2007 Author Share Posted June 28, 2007 oh ya its a 2 inch inlet and about 1 1/4 inch out Quote Link to comment Share on other sites More sharing options...
jdarkme Posted June 28, 2007 Share Posted June 28, 2007 The TVR Tuscan has motorcycle mufflers (or at least it did in the beginning) and it sounds really great. I've always wanted to try one on my car, it would of course have to be a large model. You should record it and post the video. Quote Link to comment Share on other sites More sharing options...
Roostmonkey Posted June 28, 2007 Share Posted June 28, 2007 basicly, a dirtbike silencer is a glaspak.just buy a thrush or cherrybomb and get something thats sized for a car. Quote Link to comment Share on other sites More sharing options...
Jeremy82zx Posted June 28, 2007 Author Share Posted June 28, 2007 well i cant put it on now, my dad thinks the back pressure will blow the engine...... I tried to tell him it is just a glass pack. But i got bitched out for thinking i know more than him about mechanics.OK so what is the worst that could happen. Quote Link to comment Share on other sites More sharing options...
cpt jack Posted June 28, 2007 Share Posted June 28, 2007 well i cant put it on now, my dad thinks the back pressure will blow the engine...... I tried to tell him it is just a glass pack. But i got bitched out for thinking i know more than him about mechanics.OK so what is the worst that could happen. blow the muffler off? Quote Link to comment Share on other sites More sharing options...
Jeremy82zx Posted June 28, 2007 Author Share Posted June 28, 2007 blow the muffler off? no he thinks it will ruin the valves................................wtf Quote Link to comment Share on other sites More sharing options...
MrFancypants Posted June 28, 2007 Share Posted June 28, 2007 It would just choke the motor and possibly stall it. Kind of like Axel Foley putting a banana in your tailpipe - Greg - Quote Link to comment Share on other sites More sharing options...
e_racer1999 Posted June 28, 2007 Share Posted June 28, 2007 Im thinking a good analogy would be a sumo wrestler blowing through a swizzle stick. - Greg - best analogy.... EVAR that muffler was designed for a ~450cc motor. i don't think putting it on a ~2800cc motor would be very beneficial...... Quote Link to comment Share on other sites More sharing options...
zero Posted June 28, 2007 Share Posted June 28, 2007 it may have been designed for a 450cc, but i bet a muffler designed for a 1000cc sportbike or even a 600 should flow enough. Figure those things being 1000cc at 16k rpm, is more or less the same as 2800cc at 6000rpm. Slightly off topic, my friend's ninja 600RR redlines at 16500rpm.....it sounds ridiculous. Are there any street bikes that spin much higher than that? Quote Link to comment Share on other sites More sharing options...
SteelToad Posted June 28, 2007 Share Posted June 28, 2007 Hmmm but what if you had 6 of 'em, one for each cylinder ? Quote Link to comment Share on other sites More sharing options...
Flexicoker Posted June 29, 2007 Share Posted June 29, 2007 Slightly off topic, my friend's ninja 600RR redlines at 16500rpm.....it sounds ridiculous. Are there any street bikes that spin much higher than that? Honda CBR250... 20,000 rpm. You can't find them in the states. Quote Link to comment Share on other sites More sharing options...
buZy Posted June 29, 2007 Share Posted June 29, 2007 well i cant put it on now, my dad thinks the back pressure will blow the engine...... I tried to tell him it is just a glass pack. But i got bitched out for thinking i know more than him about mechanics.OK so what is the worst that could happen. It won't blow your motor. The worst it will do is just slow your car down. It looks cool... but get a real muffler. Quote Link to comment Share on other sites More sharing options...
Jeremy82zx Posted June 29, 2007 Author Share Posted June 29, 2007 Ya i was just gonna do this as an experiment and if it sounded really cool i would probably run 2 of them at the back Quote Link to comment Share on other sites More sharing options...
BillZ260 Posted June 29, 2007 Share Posted June 29, 2007 Hmmm but what if you had 6 of 'em, one for each cylinder ? Hilarious, DO IT. Quote Link to comment Share on other sites More sharing options...
Jeremy82zx Posted June 30, 2007 Author Share Posted June 30, 2007 Hilarious, DO IT. too bad there 200-300$ each:sad: Quote Link to comment Share on other sites More sharing options...
dosquattro Posted July 1, 2007 Share Posted July 1, 2007 I have a Yoshimura slip-on for a Blackbird and the the pipe is 2.5" going into the muffler but then again the engine is like 1100cc's. I'm thinking of using it on my L28ET as I only spent 40 bucks on it. If I could find another just like it I'd run two side by side. Quote Link to comment Share on other sites More sharing options...
bschiltz Posted July 4, 2007 Share Posted July 4, 2007 My little brother's friend has a FMF silencer on his Mitsu' pick-up. It doesn't sound much different. Just like the other guys said, it's basically a glass pack. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted July 4, 2007 Administrators Share Posted July 4, 2007 well i cant put it on now, my dad thinks the back pressure will blow the engine...... I tried to tell him it is just a glass pack. But i got bitched out for thinking i know more than him about mechanics.OK so what is the worst that could happen. As Buzy said, You won’t hurt your engine by using that restrictive muffler. I repeat, you will NOT blow up your engine with the excess back pressure that restrictive muffler would create. Though if you are under 18 and still living under Dads roof, you’ll be better served respecting your fathers wishes. Parents respond real well to a child who is respectful of parental authority. And in the long run, you’ll benefit, trust me… The mechanics of what is happening… That restrictive muffler just adds considerable back pressure in the exhaust system and as a result, the cylinders wont be able to rid all the spent gasses out of the cylinder and keeps some of that now inert gas in the chamber for the next cycle, just as the EGR valve functions. Reducing intake charge density. Excessive back pressure is sort of like an automatic EGR. (OEM uses Exhaust Gas Recirculation to keep combustion temps down and the resultant oxides of Nitrogen from excess combustion temps in check). Power will be down as result of not being able to breathe as much combustible air fuel into the cylinders AND from the pumping losses associated with exhaust back pressure. Also, if your exhaust system is not up to snuff, i.e. any of the portion of the exhaust system is old and really corroded, the added pressure in the exhaust could blow it out at the point. It would just show you what part of your exhaust system was about to go in the next few thousand miles anyway. More than likely, nothing will happen other than a noticeable loss of power, loss of fuel mileage, maybe little quieter, maybe a bit of “whoosh†noise at WOT, but that’s about it. Good friend and sometimes poster here, Dave Lum, (has a Ron Tyler installed VG30DETT in a 2dr 510), purchased a 510 wagon that the previous owner installed a small motorcycle muffler on. It was relatively quiet at cruise, at wide open throttle it sounded like the exhaust of a jet engine. A somewhat loud whooshing sound, sounds a lot like tires skidding without the squealing noise. I’m sure you all have heard some car drive by and they floor it and just makes an obnoxious “whooshing’ noise? That is what it sounded like, a VERY choked exhaust trying to escape. When he installed a real exhaust under the car, it sounded much better and that little L-4 was pulling harder in the upper RPM range. Darn kids playing with motorcycle parts on their cars.. … Next they will be using 12v computer fans stacked in series in their intake as electric super chargers… or maybe even leaf blowers.. . Quote Link to comment Share on other sites More sharing options...
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