12valve@heart

Can anyone recommend a good source for a 3"-5" exhaust adaptor? I'm coming out of my 3" decelerator exhaust brake and want to run 5" the rest of the way but don't want to do a 3-4 and then a 4-5 like the local truck shop suggests. I know they must be out there but haven't found them yet.

Thanks in advance

Zino

Unless you are planning on future mods, 3" inch all the way is all you will need. Furthermore, 3" to 4" then 4" to 5" is a better way to do it if you insist. From a piping standpoint it might seem Rube Goldberg, but from a physics and fluid dynamics perspective it transitions the flow much better.





Zino

12valve@heart

Well, as far as future mods, the 16cm turbo housing is sitting on the bench as is the exhaust brake and the HD valve springs are on order. I just happen to have a 4' length of semi stack that I was planning to put behind the exhaust brake and have it turn down and out in front of the rear tire, thus the need for the 3"-5". Once I get the exhaust system redone, my plan is to up the pump timing a bit and then look into injectors if necessary. The current goal is somewhere around 250hp.