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MopàrBCN
01-22-2008, 08:46 AM
Hi,

I am due to install a 3" Exhaust System on my Daytona.

Question: To mount the 3" Downpipe to the 2.5" Swingwalve, what Size Exhaust Donout will I need, 2.5" or 3" ????????

Thx !!!

glhs727
01-22-2008, 10:22 AM
Hi,

I am due to install a 3" Exhaust System on my Daytona.

Question: To mount the 3" Downpipe to the 2.5" Swingwalve, what Size Exhaust Donout will I need, 2.5" or 3" ????????

Thx !!!

Match the donut to the downpipe. So you would use a 3 inch donut.
later,
Cindy

MopàrBCN
01-22-2008, 04:07 PM
Thank you !!!

Juggy
01-24-2008, 07:53 AM
a 3" downpipe will mount to a 2.5" swingvalve???

I dont think I could get my TU DP to do that....maybe the FWDP ones can tho???

tryingbe
01-24-2008, 11:03 AM
Or maybe you didn't try hard enough to make them fit.

Both of my cars have 2.5 inch swingvalve and 3 inch downpipes.

gvare001
01-24-2008, 12:38 PM
This is how a TU 3" downpipe, mates to a 2.5" turbonetics SV. It should be enough to seal.
http://i94.photobucket.com/albums/l120/gvare001/IMG_4778.jpg

Chris W
01-24-2008, 04:27 PM
Heres a photo comparing the large and small 2.25", 2.5" and 3" swingvalves. Also one showing the 3" donut in a 2.5" swingvalve. It will fit but since the contours are not matching the donut will get chewed up due to engine movement. Over time the donut will need replacing.

Chris-TU

MopàrBCN
01-30-2008, 04:25 AM
Hi, but in essence, if I would want to do it, the only choice is using a 3" Donut, correct??

glhs727
01-30-2008, 09:28 AM
yes, you would have to use a 3" donut

Xtrempickup
01-30-2008, 01:04 PM
easiest way is to do like my original 3 in exhaust was hooked up, a 3 in piece of 2.5 blown up on one end to fit on top of the 3 in DP and the 2.5 has a the correct size 2.5 donut on the end to mate to your turbo. if not you need a 3in swingvalve which is quite expensive