Open Dump Wastegate muffler
#1
Open Dump Wastegate muffler
After doing some research, I found a few options to muffle the noise of open dump wastegates.
I know re-routing the wastegate is the best way to kill the noise, but for my own reasons (for one, my xs engineering cast manifold setup and situation isnt great space wise) I am trying to avoid that as of now.
Option 1:
although pricey, it looks nice seems to be of quality. I wouldnt mind paying 150 for it if it actually cuts down the noise.
http://www.lindseyracing.com/LR/Pors...A-951-WGM.html
Option 2:
Buying a old porsche turbo wastegate muffler *stock* which came on several of the cars. cheapest I can find used and who knows what condition is about $120.
http://www.ebay.com/itm/PORSCHE-TURB...#ht_500wt_1287
http://forums.pelicanparts.com/porsc...e-muffler.html
More porsche custom wastegate muffler pics:
http://forums.pelicanparts.com/911-9...e-muffler.html
Another option I was thinking is junior dragster mufflers since they are not restrictive and skinny. Only prob is, the only 1.75 inch one I could find costs ~$350.
http://www.borla.com/products/produc...?cat=5&type=73
Final option. possibly extending the wastegate tube its self may decrease the noise level or at least make it more pleasurable to hear.
http://www.google.com/products/catal...ed=0CF8Q8wIwAw
I dont really have a decent option here for silencing the noise, anyone else have comments or ideas?
I know re-routing the wastegate is the best way to kill the noise, but for my own reasons (for one, my xs engineering cast manifold setup and situation isnt great space wise) I am trying to avoid that as of now.
Option 1:
although pricey, it looks nice seems to be of quality. I wouldnt mind paying 150 for it if it actually cuts down the noise.
http://www.lindseyracing.com/LR/Pors...A-951-WGM.html
Option 2:
Buying a old porsche turbo wastegate muffler *stock* which came on several of the cars. cheapest I can find used and who knows what condition is about $120.
http://www.ebay.com/itm/PORSCHE-TURB...#ht_500wt_1287
http://forums.pelicanparts.com/porsc...e-muffler.html
More porsche custom wastegate muffler pics:
http://forums.pelicanparts.com/911-9...e-muffler.html
Another option I was thinking is junior dragster mufflers since they are not restrictive and skinny. Only prob is, the only 1.75 inch one I could find costs ~$350.
http://www.borla.com/products/produc...?cat=5&type=73
Final option. possibly extending the wastegate tube its self may decrease the noise level or at least make it more pleasurable to hear.
http://www.google.com/products/catal...ed=0CF8Q8wIwAw
I dont really have a decent option here for silencing the noise, anyone else have comments or ideas?
#2
another interesting find. this seems to be the best option if I can manage to fit it. It doesnt seem restrictive.
http://www.ebay.com/itm/Flo-Pro-3302...ht_2801wt_1139
http://www.ebay.com/itm/Flo-Pro-3302...ht_2801wt_1139
#3
Joe,
We sell this unit; http://www.turbosource.com/ProductDe...e=TS4-10-51661
22" body, 26" length, 2" in and out...
We sell this unit; http://www.turbosource.com/ProductDe...e=TS4-10-51661
22" body, 26" length, 2" in and out...
Last edited by Turblown; 04-13-12 at 12:02 AM.
#7
ill like to revive this thread. Now that my single conversion is just about done, Im looking more into muffling the open dump. For now its setup as a dump until I figure out a reasonable method.
Elliot was nice enough to share a link with a 2 inch muffler, which I purchased but I wasnt able to fit it by any means with my specific setup. If it did fit, it def would of been awsome.
Now im just curious how the supertrap style will work.. the concerns with that are the heat resistant capability and most importantly the backpressure caused by it.
Im really eyeballing this as well. I just dont know if it will fit though.
http://www.lindseyracing.com/LR/Pors...A-951-WGM.html
Maybe Ill post pics of my underbody and you guys can chime in for some ideas.
Elliot was nice enough to share a link with a 2 inch muffler, which I purchased but I wasnt able to fit it by any means with my specific setup. If it did fit, it def would of been awsome.
Now im just curious how the supertrap style will work.. the concerns with that are the heat resistant capability and most importantly the backpressure caused by it.
Im really eyeballing this as well. I just dont know if it will fit though.
http://www.lindseyracing.com/LR/Pors...A-951-WGM.html
Maybe Ill post pics of my underbody and you guys can chime in for some ideas.
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#13
its not a bad size.
FMF Powercore2 Shorty Silencer RM250 03-07 - | FMF Exhaust at Bob's Cycle Supply
But for the price it may be better to still stick with the lindsey racing one.
working link..
Google Image Result for http://www.lindseyracing.com/pics/LRA-951-WGM3.jpg
FMF Powercore2 Shorty Silencer RM250 03-07 - | FMF Exhaust at Bob's Cycle Supply
But for the price it may be better to still stick with the lindsey racing one.
working link..
Google Image Result for http://www.lindseyracing.com/pics/LRA-951-WGM3.jpg
#14
Eye In The Sky
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My WG is routed back into the DP, but I did try a temp WG muffler with a small
SuperTrapp. It did not work. I used the SuperTrapp: Performance Exhaust
with a pipe size that matched my Tial 46mm WG.
If I reduced the plates to make the sound reasonable, it restricted the flow and boost creep. If I opened it up to prevent boost creep, it was as loud as if it was not here.
SuperTrapp. It did not work. I used the SuperTrapp: Performance Exhaust
with a pipe size that matched my Tial 46mm WG.
If I reduced the plates to make the sound reasonable, it restricted the flow and boost creep. If I opened it up to prevent boost creep, it was as loud as if it was not here.
#15
My WG is routed back into the DP, but I did try a temp WG muffler with a small
SuperTrapp. It did not work. I used the SuperTrapp: Performance Exhaust
with a pipe size that matched my Tial 46mm WG.
If I reduced the plates to make the sound reasonable, it restricted the flow and boost creep. If I opened it up to prevent boost creep, it was as loud as if it was not here.
SuperTrapp. It did not work. I used the SuperTrapp: Performance Exhaust
with a pipe size that matched my Tial 46mm WG.
If I reduced the plates to make the sound reasonable, it restricted the flow and boost creep. If I opened it up to prevent boost creep, it was as loud as if it was not here.
#16
Full Member
iTrader: (19)
I had been using open wastegate for over a year and I finally got around to routing it back into the downpipe. I used 2" piping and gradual bends and it routes in right into the bend where it levels off into the mid pipe. This thread had me searching for mufflers but I have a friend who owns a muffler shop and it ended up costing me next to nothing to do it. As far as I can tell, I can't feel any power loss. If anything the car feels faster because you can actually floor it more of the time without worrying about unwanted attention. I have my dyno sheet from last January and am waiting for it to cool off in a few months to compare now that it's recirculating. I did 418whp at 18psi and I will see what it does at similar temps for comparison. I'll let you guys know in case you are thinking about quieting down an open dump.
#19
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Sorry if I am a bit late. I was doing a Google search for the a wastegate muffler and came across your thread. I had an idea I thought I would share that you may not have thought of or knew about. Do a search for 2 stroke motorcycle mufflers. They often have very small inlets like we need for a wastegate and many can be cut to length. You can also custom make them out of carbon or titanium if you want. I'll be doing this type in my 911 when I start building my piping.
Again sorry if I'm late, I just joined in order to post this for you.
Cheers,
Scott
I tried to post you a link but because I do not have enough post count I am unable to do that. So, just look up ebay item number 230829178035 this is just for reference purpose only. Many of the 2 stroke motorcycles are GREY MARKET (UK spelling) motorcycles not sold on the US market so parts are kind of slim but you still can find them. You can also check BARF.COM or bayareariders.com cant remember which. Its a motorcycle forum in CALI where grey market motorcycles are huge. I restored a really rare V4 grey market motorcycle and they were a big help. Also, you should be able to find one used on that forum unless you want a new one which I'm sure you can also find.
sorry for the rather long 1st post.
Again sorry if I'm late, I just joined in order to post this for you.
Cheers,
Scott
I tried to post you a link but because I do not have enough post count I am unable to do that. So, just look up ebay item number 230829178035 this is just for reference purpose only. Many of the 2 stroke motorcycles are GREY MARKET (UK spelling) motorcycles not sold on the US market so parts are kind of slim but you still can find them. You can also check BARF.COM or bayareariders.com cant remember which. Its a motorcycle forum in CALI where grey market motorcycles are huge. I restored a really rare V4 grey market motorcycle and they were a big help. Also, you should be able to find one used on that forum unless you want a new one which I'm sure you can also find.
sorry for the rather long 1st post.
Last edited by FLYONWALL9; 07-30-12 at 05:59 AM.
#21
Sorry if I am a bit late. I was doing a Google search for the a wastegate muffler and came across your thread. I had an idea I thought I would share that you may not have thought of or knew about. Do a search for 2 stroke motorcycle mufflers. They often have very small inlets like we need for a wastegate and many can be cut to length. You can also custom make them out of carbon or titanium if you want. I'll be doing this type in my 911 when I start building my piping.
Again sorry if I'm late, I just joined in order to post this for you.
Cheers,
Scott
I tried to post you a link but because I do not have enough post count I am unable to do that. So, just look up ebay item number 230829178035 this is just for reference purpose only. Many of the 2 stroke motorcycles are GREY MARKET (UK spelling) motorcycles not sold on the US market so parts are kind of slim but you still can find them. You can also check BARF.COM or bayareariders.com cant remember which. Its a motorcycle forum in CALI where grey market motorcycles are huge. I restored a really rare V4 grey market motorcycle and they were a big help. Also, you should be able to find one used on that forum unless you want a new one which I'm sure you can also find.
sorry for the rather long 1st post.
Again sorry if I'm late, I just joined in order to post this for you.
Cheers,
Scott
I tried to post you a link but because I do not have enough post count I am unable to do that. So, just look up ebay item number 230829178035 this is just for reference purpose only. Many of the 2 stroke motorcycles are GREY MARKET (UK spelling) motorcycles not sold on the US market so parts are kind of slim but you still can find them. You can also check BARF.COM or bayareariders.com cant remember which. Its a motorcycle forum in CALI where grey market motorcycles are huge. I restored a really rare V4 grey market motorcycle and they were a big help. Also, you should be able to find one used on that forum unless you want a new one which I'm sure you can also find.
sorry for the rather long 1st post.
I will hopefully get around to taking some undercar pics this weekend and draw out a design. I have very little room to work with so size is most important. If I can fit anytime I will prob re-route it.
#22
Nice setup, it maybe be a bit too close, not far down enough and cause some backpressure. Eitherway im looking forward to your DYNO results.
When you say you get less boost creep, are you comparing to the supertrap setup you have? or just free flow dump. Most ppl claim to gain creep when backpressure is added to the wastegate exhaust.
#23
after getting the car tuned (without dyno) and driving the car for a couple days, I decided to just re-route the wastegate. The noise was just stupid.
My welder has a dynojet so I decided to do a before and after all on the same day. The result was a 20whp loss! I have the dyno and should post them up shortly.
**NOTE** something is seriously wrong wtih my setup as my td61 from turblown is reaching 15psi at 4500RPM! and I only made 330whp on the dynojet. So i basically lost hp switching from stock twins to single with added lag. I'm extremely frustrated.
My welder has a dynojet so I decided to do a before and after all on the same day. The result was a 20whp loss! I have the dyno and should post them up shortly.
**NOTE** something is seriously wrong wtih my setup as my td61 from turblown is reaching 15psi at 4500RPM! and I only made 330whp on the dynojet. So i basically lost hp switching from stock twins to single with added lag. I'm extremely frustrated.
#25
Eats, Sleeps, Dreams Rotary
iTrader: (52)
I have been weighing my options for a wastegate muffler also. Anyone have success with them?
OP, test your wastegate to insure it isnt sticking open causing your turbo to overwork. I had this issue when I was producing low numbers.
What were your intake temps?
OP, test your wastegate to insure it isnt sticking open causing your turbo to overwork. I had this issue when I was producing low numbers.
What were your intake temps?