I'm going to be buying a pipe for my '89 KDX and was just wondering what pipes everyone else is running on their 89-94 KDX's. Did you notice a big power increase compared to the double-walled stocker? Any fitment problems? What jetting are you using? My elevation is anywhere from 1600-2200ft. I will also be adding Boyesen power reeds. Thanks a bunch.
'89 KDX 200 - PC, FMF, DG, or Dynoport Pipe
- Thread starter NYkdxer
- Start date
G. Gearloose
Pigment of ur imagination
- Jul 24, 2000
- 709
- 0
You may not find too many who has tried more than 1 or 2 brands head-head.
I have a DG, and it was , well, better than stock; its hard to quantify. A modest boost in all ranges. It fit well. Its was inexspensive, but not extra thick. a pipe guard is in order.
Gutting the stock pipe of its innards would provide significant benifit, some think on par with most aftermarket offerings.
If your after top end, the PC and FMF might be considered, if after low-mid, perhaps the dynoport, but I am supposing from second-hand information.
I have a DG, and it was , well, better than stock; its hard to quantify. A modest boost in all ranges. It fit well. Its was inexspensive, but not extra thick. a pipe guard is in order.
Gutting the stock pipe of its innards would provide significant benifit, some think on par with most aftermarket offerings.
If your after top end, the PC and FMF might be considered, if after low-mid, perhaps the dynoport, but I am supposing from second-hand information.
- Jan 8, 2000
- 3,331
- 1
I've tried the FMF and the PC. I prefer the PC for my style of riding - good low end power with a strong hit on the top end.
NY---I have 1990 kdx200. I think yours should be identical. I checked my jetting chart and have a starting recommendation with the following mods.
No airbox lid, Boyesen reeds, PC pipe AND silencer(clean packing). This is my setup at 50-60 degrees, which should be almost the same for you at 30-40 degrees and elevation. 38 pilot---cel 2nd clip---152 main. Good luck!!
No airbox lid, Boyesen reeds, PC pipe AND silencer(clean packing). This is my setup at 50-60 degrees, which should be almost the same for you at 30-40 degrees and elevation. 38 pilot---cel 2nd clip---152 main. Good luck!!
Twiztid One
~SPONSOR~
- Aug 19, 2003
- 312
- 0
on my old 92 i had the FMF , it made a world on difference . any pipe is better than that factory stocker . ;)
Okay; rode yesterday with the Dynoport. Ran cleanly from the bottom to the top. No real seat-of-the-pants difference in feel as far as power goes, but it does look more "factory racer", being mostly a "coned" fabrication rather than the FMF/PC formed steel.
I did not do an inadvertent rock-dent test on it.
I did not do an inadvertent rock-dent test on it.
I put the FMF on my '90 and am happy with it so far. I too wondered about the FMF after reading some of the horror stories. I ordered the pipe and turbine core silencer from Fredette when he did the cylinder and suspension work on the bike last year. I told him that if it wasn't going to fit to not even send it. It actually fit pretty well so I don't know if he pre-fit it to a bike or if I just got lucky.
I'm not sure about the power since I did so many things at once but the bike runs really strong and suits my needs well.
I'm not sure about the power since I did so many things at once but the bike runs really strong and suits my needs well.
No need to buy a pipe just do the pipe mod for kdx's made from 1989-1994 at:
http://www.dirtrider.net/justkdx
Click on TECH TIPS then under ENGINE click 89-94 PIPE MODS.
Ben
http://www.dirtrider.net/justkdx
Click on TECH TIPS then under ENGINE click 89-94 PIPE MODS.
Ben
