Author Topic: Bottom/midrange pipe (Read 7069 times)

supernutt · « **on:** July 04, 2013, 05:00:01 PM »

I currently have a TRX5 pipe. This thing runs good up top but I would like more bottom end power. Tried a sparks mx---a little better low end but not nearly as much top end, old beater FMF H-49 which didnt run good anywhere, and a old PT trx race pipe which was a lightswitch. I just want an unbiased opinion on what pipe would do this for me. Going on a C-Leigh midrange ported 72.25 pro x cylinder 215psi compression. 38pwk carb and CR ignition. Rad valve. I know Neil likes the CT midrange pipe. I do play riding only mostly trails but they are fast trails. Thanks.

Snowmaker10 · « **Reply #1 on:** July 04, 2013, 05:07:33 PM »

I run CT midrange "national" pipes and they have great power through out, more lower end power. But as much as I hate ESR products that TRX5 is a great pipe. I would ask Neil what he thinks or suggests.

supernutt · « **Reply #2 on:** July 04, 2013, 05:12:10 PM »

I did talk to Neil and he said for short tracks he runs the CT midrange pipe and for longer tracks he runs the TRX5. Just wondering if any other pipes would work good.

Pumashine · « **Reply #3 on:** July 04, 2013, 05:34:37 PM »

The PT type 6 is a good low end pipe. If you want to try one I have a couple I don't use any more.

supernutt · « **Reply #4 on:** July 04, 2013, 05:40:50 PM »

I thought about that. I hear it is ALL bottom end and doesnt rev out much at all. For play riding that might not be the hot ticket? And if it fits anything like my old TRX race does, I wouldnt want anything to do with it.. That pipe doesnt fit worth a crud!!!

Pumashine · « **Reply #5 on:** July 04, 2013, 05:48:59 PM »

Your are right on that one. I have gone through and opened up the C shape in the front on all mine. Then install with special made exhaust brackets. The type 6 worked fine on the Puma because how much power do you need? Right. Did miss the top end rev and went with the LED puma pipe.

jfwyatt1 · « **Reply #6 on:** July 04, 2013, 05:51:54 PM »

i tried a PT type 6 on my sons and he hated it we ended up with 1 of the newer made Bills pipes and he seems to like it best. He says it hits harder in the low end than the trx5 or the fmf (not sure which 1 its older though) but still revs out thru the top moderatly good.

supernutt · « **Reply #7 on:** July 04, 2013, 05:52:31 PM »

I still have to be able to put a hurting on some 4 pokes on the wide open county roads so I cant loose ALL my top end. If the TRX5 is as good of a compromise as their is, I can live with it but just wondering if there is anything better. Really cant run more compression already at the limit of sunoco 110

rablack21 · « **Reply #8 on:** July 04, 2013, 06:48:02 PM »

Supernutt, don't want to change the thread, just got a quick question. It looks like you are running a 310 kit with 215 psi compression. What octane fuel are you running?

supernutt · « **Reply #9 on:** July 04, 2013, 06:51:32 PM »

Sunoco 110

derby · « **Reply #10 on:** July 04, 2013, 08:15:48 PM »

I have the esr trx6 on a stock cylinder and it is perfect for the trail and hill climbing I do. On my pro-x is a ct pipe and it is excellent on the bottom end. I have always thought the ct pipes were one of the best low end setups on a pro-x. What type of porting do you have on the cylinder?

supernutt · « **Reply #11 on:** July 04, 2013, 08:22:01 PM »

Neil's low to midrange porting

derby · « **Reply #12 on:** July 04, 2013, 08:32:04 PM »

I would go with what neil says. He has probably tested the combo. Not sure if you could even buy ct pipes new anymore. Odds are they were built by kenny roberts.

I always had the same results you did with the trx5. For dunning it was fine running on the open dunes. But I found when I got into tight hill climbs it required a lot of work on the clutch to keep in the rpm where the pipe makes power. You would probably like the ct pipe it will pull down low where that trx5 won't. It will not pull the topend like the trx5 so it will be a little sacrifice.

supernutt · « **Reply #13 on:** July 04, 2013, 08:42:21 PM »

That's what I was looking for. Thank you

trx250r88 · « **Reply #14 on:** July 04, 2013, 10:31:55 PM »

i really like my lrd adjust. pipe.its on my 310, rad valve, 38mm a.s carb. r. i also had a sparks mx, but this lrd has low end and still pulls hard up top.