Fine tuning the Z
#1
11-30-2004 | 10:32 AM
Thread Starter
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Shed Knocker Rider
Harley Punk!
Harley Punk!
Joined: Oct 2003
Posts: 35,876
Likes: 2
Fine tuning the Z
Alright, I put a pro circuit T-4 exaust on my Z, with uni filter, high flow lid, and re-jetted. After many different combinations of jetting, I thought I finally had it right. Well here is my problem.....
Plug looks good, runs smooth with no misses, has more torque, outruns my friends stock Z in a 300ft drag, but..... it lost top end. I thought maybe because it is a low-mid range pipe that takes a bit from the top end, but that just doesn't sound right to me do to more air flow I don't see how I could lose anything. Maybe not gain top end, but lose it?[img]i/expressions/face-icon-small-confused.gif[/img]
I am hardly never at top end so I wasn't going to even worry about it, but it is bugging the p!ss out of me and I can't take it no more.[img]i/expressions/face-icon-small-mad.gif[/img] So could my jetting be off or is it just normal? Any advice will definately be appreciated![img]i/expressions/face-icon-small-happy.gif[/img]
Plug looks good, runs smooth with no misses, has more torque, outruns my friends stock Z in a 300ft drag, but..... it lost top end. I thought maybe because it is a low-mid range pipe that takes a bit from the top end, but that just doesn't sound right to me do to more air flow I don't see how I could lose anything. Maybe not gain top end, but lose it?[img]i/expressions/face-icon-small-confused.gif[/img]
I am hardly never at top end so I wasn't going to even worry about it, but it is bugging the p!ss out of me and I can't take it no more.[img]i/expressions/face-icon-small-mad.gif[/img] So could my jetting be off or is it just normal? Any advice will definately be appreciated![img]i/expressions/face-icon-small-happy.gif[/img]
#2
12-01-2004 | 01:17 AM
Pro Rider
Joined: Jan 2003
Posts: 749
Likes: 0
Fine tuning the Z
I'm sure its jetting...even though pipes may claim to be directed towards a certain range, like low-mid, they will also benefit the other areas as well. What are the current specs (jetting), and what elevation are you riding?? Consider looking into either an Alba or Dynojet needle, as they are very handy and easy to tune with.
We'll get this figured out...
We'll get this figured out...
#3
12-01-2004 | 09:31 AM
Thread Starter
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Shed Knocker Rider
Harley Punk!
Harley Punk!
Joined: Oct 2003
Posts: 35,876
Likes: 2
Fine tuning the Z
I already have the dynejet needle installed with dynojets. I forget off hand what clip position I have it set on, I think the 2nd or third. The pilot is stock size, and I believe the main is a 155. What gets me is that there is no dead spots whatsoever, it runs really good all the way thru.
#4
12-01-2004 | 11:16 AM
T Rex Rider
What irritates me is!
Those 6-packs work pretty good.
What irritates me is!
Those 6-packs work pretty good.
Joined: Jun 2003
Posts: 16,801
Likes: 1
From: Oeste Del Tejas
#5
12-01-2004 | 12:43 PM
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Shed Knocker Rider
Harley Punk!
Harley Punk!
Joined: Oct 2003
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Likes: 2
#7
12-12-2004 | 10:12 PM
Trailblazer
Joined: Dec 2004
Posts: 100
Likes: 0
Fine tuning the Z
I had the same problem with my lid off. I have the dynojet kit with their 165 main, Dj needle on the 3rd groove , K&N, Team Suzuki Yoshimura pipe, and when I took the lid off, I thought it ran like crap. I ended up drilling 9- 1 1/2 holes in the airbox lid and covering all with duct tape but one. I rode it and ended up taking the tape off 3. It ran great in about 40 degree weather. I hear this is a great way to make up for temperature change too.
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#8
12-21-2004 | 08:29 AM
Weekend Warrior
Joined: Jun 2004
Posts: 5
Likes: 0
Fine tuning the Z
IMO....
http://www.albaaction.com
ALBA jet kit.... $23
Use Mikuni jets
LT-Z400 - Slip-On Pipe Filter Kit
Alba Slip-On Pipe Kit with Filter Kit and Air Box Lid On
Main Jet - 155
Pilot Jet 22.5 (stock)
Alba LTZ Needle 2nd Clip
Shim stack remains stock -
Fuel Screw 1 - 1 1/4 Turns
Remove Snorkel for Air Box Lid
LT-Z400 - Stage I Kit
Alba Pipe Kit With Disc Pack and Air Box Lid On
Main Jet - 142
Pilot Jet 22.5 (stock)
Alba LTZ Needle 3rd Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Remove Snorkel for Air Box Lid
Suggest: Air Filter Adaptor with Air Filter
LT-Z400 - Stage II Kit
Alba Pipe Kit With Disc Pack and Air Box Lid Off
Should Have Air Filter Kit
Main Jet - 150
Pilot Jet 25
Alba LTZ Needle 4th Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Suggest: Air Filter Adaptor with Air Filter
LT-Z400 - Stage III Kit
Alba Pipe Kit With Open End Cap and Air Box Lid Off
Should Have Air Filter Kit
Main Jet - 155
Pilot Jet 25
Alba LTZ Needle 3rd Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Suggest: Air Filter Adaptor with Air Filter
http://www.albaaction.com
ALBA jet kit.... $23
Use Mikuni jets
LT-Z400 - Slip-On Pipe Filter Kit
Alba Slip-On Pipe Kit with Filter Kit and Air Box Lid On
Main Jet - 155
Pilot Jet 22.5 (stock)
Alba LTZ Needle 2nd Clip
Shim stack remains stock -
Fuel Screw 1 - 1 1/4 Turns
Remove Snorkel for Air Box Lid
LT-Z400 - Stage I Kit
Alba Pipe Kit With Disc Pack and Air Box Lid On
Main Jet - 142
Pilot Jet 22.5 (stock)
Alba LTZ Needle 3rd Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Remove Snorkel for Air Box Lid
Suggest: Air Filter Adaptor with Air Filter
LT-Z400 - Stage II Kit
Alba Pipe Kit With Disc Pack and Air Box Lid Off
Should Have Air Filter Kit
Main Jet - 150
Pilot Jet 25
Alba LTZ Needle 4th Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Suggest: Air Filter Adaptor with Air Filter
LT-Z400 - Stage III Kit
Alba Pipe Kit With Open End Cap and Air Box Lid Off
Should Have Air Filter Kit
Main Jet - 155
Pilot Jet 25
Alba LTZ Needle 3rd Clip
Shim stack remains stock -
Fuel Screw 3 Turns (approx)
Suggest: Air Filter Adaptor with Air Filter
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