Cylinder heat caused by pipe

[F-Red]

You guys just blow my freakin' mind! I know the pipe theory is a complicated mistress. What to do? I need to borrow some pipes. :fat:

[rsss396]

yes borrow some pipes and go to the dyno

[KASEY]

well I know this,,,  I have a pro-x 350 ,,  and an esr 350,,  I built a moto-x trike for a race in may,,  I took an old fmf pipe,, made it centermount and went with a larger AND SHORTER stinger ,, it woke up that motor in the mid and topend power like crazy,,,  I pulled the holeshot pretty easy in both motos too,,, no doubt in my mine the seat of the pants dyno was HAPPY!!!

[rsss396]

proof is in the puddng F-Red order up a shiny new BB pipe

[atvmxr]

The "issue" with the esr pipes, supposedly, was they are poorly welded and have lots of slag on the inside restricting the flow.   It's simply to verify.  If you have an esr pipe pull the silencer and use long screw driver etc to see for yourself


Or at least that was my interpretation of the original post on ' net

[F-Red]

proof is in the puddng F-Red order up a shiny new BB pipe

Where do I begin? Besides LED, who else offers BB pipes? Without testing each pipe, it's kind of an expensive, roll the dice purchase.

[Pumashine]

Where do I begin? Besides LED, who else offers BB pipes? Without testing each pipe, it's kind of an expensive, roll the dice purchase.

LED now and LRD made a few a while back. What pipe do you usually run?

[rsss396]

The "issue" with the esr pipes, supposedly, was they are poorly welded and have lots of slag on the inside restricting the flow.   It's simply to verify.  If you have an esr pipe pull the silencer and use long screw driver etc to see for yourself


Or at least that was my interpretation of the original post on ' net

If I remember correctly Jerry Hall  gas welds all his pipes because of less slag, which on the ESR pipes he could just cut the stinger off and gas weld them after cleaning up, but instead he also increases the stinger size so while weld slag could be a problem the real issue for some larger motors is the fact that they need less back pressure and a increase in stinger size is the solution.

[F-Red]

LED now and LRD made a few a while back. What pipe do you usually run?

I'm running a ESR TRX5 with Eddie's silencer.

If I remember correctly Jerry Hall  gas welds all his pipes because of less slag, which on the ESR pipes he could just cut the stinger off and gas weld them after cleaning up, but instead he also increases the stinger size so while weld slag could be a problem the real issue for some larger motors is the fact that they need less back pressure and a increase in stinger size is the solution.

So Dave, to keep cost at a minimum, could I send the pipe to Tony, have him weld a larger stinger on the TRX5? :glee:

[rsss396]

Where do I begin? Besides LED, who else offers BB pipes? Without testing each pipe, it's kind of an expensive, roll the dice purchase.

The stinger is sole piece that controls back pressure in the pipe, so you have the choice of modding your existing pipe if you can weld or know someone that can weld (not mig, preferably tig or gas) or go with a ESR or LED/old LRD BB pipe with a 1-1/4" O.D. stinger
Pick the style pipe that fits your riding MX,TT or Dune and go with it, it really no differant than picking one with a 1-1/8 O.D.

[rsss396]

i'm running a esr trx5 with eddie's silencer.





So dave, to keep cost at a minimum, could i send the pipe to tony, have him weld a larger stinger on the trx5? :glee:

yes!

[rsss396]

If Tony can not send it to Jerry Hall

[F-Red]

If Tony can not send it to Jerry Hall

Forgive my ignorants, This the Jerry Hall in Glendale, Az.? Halls Percision Racing Products

[rsss396]

yes! halls precision racing products

[rsss396]

might not hurt to even ask arlan, he may even put a little love in your esr pipe