question on exhaust sizing/adapter.
#1
Racer
Thread Starter
Join Date: Feb 2009
Location: Elk Grove, IL. 85.5 n/a 944
Posts: 308
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
i was wondering how tightly a 2.25" I.D. would fit around the factory n/a exhaust?
i'm looking to make my own exhaust from the manifold back. i was thinking about doing the same thing lindseyracing does with their exhaust that uses the factory manifold. example off lindsey's site http://www.lindseyracing.com/pics/944exh252CLL.jpg
i tried looking it up and i only found one person saying that 2.25" will fit around the metric piping nicely, but i want a definite answer.
thank you,
nick
i'm looking to make my own exhaust from the manifold back. i was thinking about doing the same thing lindseyracing does with their exhaust that uses the factory manifold. example off lindsey's site http://www.lindseyracing.com/pics/944exh252CLL.jpg
i tried looking it up and i only found one person saying that 2.25" will fit around the metric piping nicely, but i want a definite answer.
thank you,
nick
#3
RL Community Team
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
On your first question, I don't know, but you could easily confirm by measuring your existing pipe OD with a caliper. If you don't have a caliper, I bought my digital one at Harbor Freight for about $10. I would also measure the exact ID of "2.5 inch ID" pipe, since it's probably like 2.45 or 2.53 or something.
On your second question, I don't know, but you should email/call summit or jegs and ask. Again, I'm sure there is some variance and/or tolerance, so even if they call it 2.5" ID, it could be a little bit more or less.
Be sure to order a nice free-flow cat. These new cats create almost no restriction and they're cheap. Good luck!
On your second question, I don't know, but you should email/call summit or jegs and ask. Again, I'm sure there is some variance and/or tolerance, so even if they call it 2.5" ID, it could be a little bit more or less.
Be sure to order a nice free-flow cat. These new cats create almost no restriction and they're cheap. Good luck!
#5
Racer
Thread Starter
Join Date: Feb 2009
Location: Elk Grove, IL. 85.5 n/a 944
Posts: 308
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
On your first question, I don't know, but you could easily confirm by measuring your existing pipe OD with a caliper. If you don't have a caliper, I bought my digital one at Harbor Freight for about $10. I would also measure the exact ID of "2.5 inch ID" pipe, since it's probably like 2.45 or 2.53 or something.
On your second question, I don't know, but you should email/call summit or jegs and ask. Again, I'm sure there is some variance and/or tolerance, so even if they call it 2.5" ID, it could be a little bit more or less.
Be sure to order a nice free-flow cat. These new cats create almost no restriction and they're cheap. Good luck!
On your second question, I don't know, but you should email/call summit or jegs and ask. Again, I'm sure there is some variance and/or tolerance, so even if they call it 2.5" ID, it could be a little bit more or less.
Be sure to order a nice free-flow cat. These new cats create almost no restriction and they're cheap. Good luck!
http://www.summitracing.com/parts/BOR-40364/
and this in place on the cat
http://www.summitracing.com/parts/WLK-24215/
and if i don't like the sound of it i'll replace the dynomax with something different of similar design
#7
Racer
Thread Starter
Join Date: Feb 2009
Location: Elk Grove, IL. 85.5 n/a 944
Posts: 308
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
i don't even have a muffler right now. the one the po put on rusted through, and i just sold a magnaflow that was poorly welded and kept on falling off to a local jdm guy. this is just so i have a muffler with a nice sound, and not get another ticket for not having a muffler. and while i'm at it i plan on redoing all the piping, which is why i'm asking which size it is.