Mark Posted May 6, 2019 Share Posted May 6, 2019 I know alot of you guys run open pipes, but i want to run an endcan. Mainly for less day to day hassle, and for mot time. Ideally i want to run an under engine stubby. I know a stubby messes with the running of a NA engine. Whats the deal on a turbo'd engine? Same story? Quote Link to comment
Allspeeds Posted May 6, 2019 Share Posted May 6, 2019 I’m interested in this question because I’d like mine to be track day friendly Quote Link to comment
clivegto Posted May 6, 2019 Share Posted May 6, 2019 A can makes them really quiet, the turbo it's self makes it a little less noisey but may be not enough for racing @MeanBean49? Quote Link to comment
Fula28 Posted May 6, 2019 Share Posted May 6, 2019 This is my experience from past, when my slabbie turbo was first set up it ran with 63mm or 2.1/4" system and can, made 103db,s and the back pressure from the can helped the turbo in my application.WHY well small back pressure from Akrapovic can kept the hot side impeller held correctly and stopped small shaft float and with used turbo at time slight oil weep, A good turbo specialist (Subaru tuner) rebuilt my turbo and gave me labyrinth seal to aid this issue, also Full open systems I.e no exhaust system no back pressure, is not a good combo, Turbo I,e 4" systems on cars /bikes have shorter life due to this lack of back pressure.Now like I said this helped my issues no more floaty shaft/more back pressure and healthy boost . I prefer big bore system and quality can makes a great set up better and trackday friendly . Quote Link to comment
Allspeeds Posted May 6, 2019 Share Posted May 6, 2019 Good food for thought this I love a turbo with an open pipe but sadly to use bikes in some places you have to put looks to one side. Quote Link to comment
Mark Posted May 6, 2019 Author Share Posted May 6, 2019 What about performance/set up differences? Standard length can vs stubby? Quote Link to comment
Arttu Posted May 7, 2019 Share Posted May 7, 2019 Length or placement isn't that critical with turbo as turbo kills exhaust pulses quite effectively any ways. What matters is restriction and back pressure. And there less is better at least from performance standpoint. So large bore and no sharp turns is the general guidance. For reference I had an end can with 46mm internal diameter baffle and about 40cm length on roughly 200hp engine. Removing the can made almost 10hp more power and the turbo spooled up earlier. 1 Quote Link to comment
Mark Posted May 8, 2019 Author Share Posted May 8, 2019 17 hours ago, Arttu said: Length or placement isn't that critical with turbo as turbo kills exhaust pulses quite effectively any ways. What matters is restriction and back pressure. And there less is better at least from performance standpoint. So large bore and no sharp turns is the general guidance. For reference I had an end can with 46mm internal diameter baffle and about 40cm length on roughly 200hp engine. Removing the can made almost 10hp more power and the turbo spooled up earlier. Spot on. Cheers bud. Thats what i was thinking. But didnt want to assume and mess up my hard work! Quote Link to comment
vizman Posted May 8, 2019 Share Posted May 8, 2019 On 5/6/2019 at 7:54 PM, Allspeeds said: Good food for thought this I love a turbo with an open pipe but sadly to use bikes in some places you have to put looks to one side. The short pipes are not for looks. Quote Link to comment
Reinhoud Posted May 8, 2019 Share Posted May 8, 2019 I've got a home made pipe, 63.5mm all the way, stops before the rear axle. Quote Link to comment
Allspeeds Posted May 8, 2019 Share Posted May 8, 2019 14 hours ago, vizman said: The short pipes are not for looks. This i am learning Quote Link to comment
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