Obsession with a drag pipe

[fastfail]

Not sure why the hell I want to put a damn drag pipe on my little CS265, but I do. I hate this FMF Fatty and I keep contemplating buying a drag pipe that will kill all the power in this quad, lol. Anyone else like the pure look of a Shearer or something like me?

[05450r]

I like the look, but I like the feel of a strong running 265 also. A good pipe on a 265 makes for a snappy, snotty little motor!

[fastfail]

Yeah I agree. If I find a good TT pipe I'm going to snatch it up until I build something much bigger.

[jadleybray]

You don't need a big motor to benefit from a drag pipe, but rather a well tuned motor for the purpose intended for.  The first OOF pipe I bought was an FTZ pipe for a 272cc stock cylinder R JDI Racing built for me.  It worked pretty well, dyno'd out at 58hp if I remember right.  I also used it on a stock cylinder aircooled R motor that was impressive, never ran it on a dyno but turned an equal ET as the 272 pumper at 4.89.  I say go for it, keep your eye out for a good used one.

[Jerry Hall]

A custom drag pipe is a little less time consuming to build but usually makes a lot of noise There is not really any power advantage on most engines if the same pipe dimensions are incorporated into an in-frame pipe. Some builders think that the straight stingers (no muffler) produce more power but I have not found that to be true if the pipe outlet restriction has been optimized.

Some in-frame pipes pipes that have the long straight head pipes have detonation issues when tuned for max power if the engine is run at sustained WOT. Most of the drag pipes on the TRXs have a slight bend in the head pipe starting at the exhaust flange. A slight bend in the head pipe close to the engine will sometimes reduce detonation issues in highly tuned engines that are related to the straight pipes. A straight pipe is one that does not have a bend in the pipe until the pipe is 2 1/2 inches or so in diameter.