+-

Author Topic: Exhaust pipe bottom end power loss?  (Read 1082 times)

Offline SuperNutt

  • Trade Count: (0)
  • Green Horn
  • ***
  • Posts: 128
Exhaust pipe bottom end power loss?
« on: June 19, 2016, 08:45:45 am »
I have a 1988 stock-ish zilla.  No porting only mod is a 13:1 o-ringed head running on race gas.  It had a dyno port mid-top pipe on it when I bought it.  I didn't think it ran very well with that pipe.  I had an FMF laying around so I put that on.  I am super impressed with all the bottom end torque this pipe makes.  It seems to pull the front wheels effortlessly from what seems like idle.  Since I ride this one in the trails, it is a great pipe for that.  I have a HPR zilla with the HPR 19 pipe on it and thought about trying it out on this stocker.  I do not want to loose ANY of the awesome bottom end torque that this FMF puts out.  I know that I will gain lots of top end HP with the HPR pipe.  I can't seem to come up with a dyno chart for the FMF pipe on a stock zilla.  I found one for the HPR pipe on a stocker.  Any input would be appreciated.  Or if someone has a dyno chart of a FMF pipe on a stock zilla.   Thanks. 

Share on Facebook Share on Twitter


Offline Mr.Sampson

  • Trade Count: (0)
  • Green Horn
  • ***
  • Posts: 63
  • Gender: Male
  • no such thing as a bad day riding a quadracer!!
  • Location: michigan
Re: Exhaust pipe bottom end power loss?
« Reply #1 on: June 19, 2016, 08:52:30 am »
I found one on google one time and if my memory is right it beat all the other pipes under 4000 rpm or so... I think I google searched LT500 Quadzilla pipe dyno ... 
87 Zilla dune build
87 Zilla banana build
89 Lt250 Bartlett trail port
95 Lt80 kids build
97 yfs200 blaster kids build

Offline SuperNutt

  • Trade Count: (0)
  • Green Horn
  • ***
  • Posts: 128
Re: Exhaust pipe bottom end power loss?
« Reply #2 on: July 15, 2016, 06:36:28 pm »
I finally got around to swapping the HPR 19 pipe on to the stock 88 zilla.  Compared to the FMF, it gained a TON of top end power.   But it definitely lost the snap and massive torque on the bottom end for woods riding.  It takes a lot longer for it to come up on the pipe where the FMF just always seems to be at the right rpm in the woods.   I had to know and now I have my answer.  Based on the dyno runs that I have seen, it seems that the HPR 19 makes the lowest RPM torque and horsepower of all the big high volume pipes.  Perhaps the DCS 7 will have more bottom end? 

 

+- Suzuki Quadracer HQ Store Zone

http://www.suzukiquadracerhq.com/index.php?action=store