Pajero 4WD Club of Victoria Public Forum Pajero 4WD Club of Victoria Public Forum

Go Back   Pajero 4WD Club of Victoria Public Forum > General Information > Mechanical

Mechanical Discussion of mechanical matters

Reply
 
Thread Tools Display Modes
  #1  
Old 1 Week Ago
4M41_WA 4M41_WA is offline
Junior Member
 
Join Date: Mar 2019
Location: Western Australia
Posts: 16
Default Unhappy Vibration between 100-120km/h under acceleration after 50mm lift

Hi Guys,


Has anyone experienced similar, or can share any advice?

I recently put a 50mm kings / bilstein lift in the pajero with HHD front and HD rear, with a 6mm front strut spacer to help level it all out (also run bullbar, winch, dual bat)


I have put new tyres on (BFG K02) and had them balanced and aligned (NOTE that this problem with the vibration occured with the old tyres still installed also, so is not tyres).


I have also put in a boos bash plate kit too incase anyone has any wind related vibrations?????




Only since I have put the lift in, in 4H only (not 2H) there is a vibration which is audible and can also feel through the body of the car - this only occurs between 100-120km/h under acceleration, while coasting or low acceleration the vibration disappears.



Any advice or help will be greatly appreciated as I'm worried something is going to break.

Kris
__________________
__________________
2010 GLS 3.2 Auto
Reply With Quote
  #2  
Old 6 Days Ago
chincksman chincksman is offline
Junior Member
 
Join Date: Aug 2019
Location: AU
Posts: 6
Default

I know in the old 80 series and nissan with lift you have changed diff angles for the tailshaft or you get vibrations maybe tailshaft needs spacer

Sent from my SM-G935F using Tapatalk
Reply With Quote
  #3  
Old 6 Days Ago
old Jack's Avatar
old Jack old Jack is offline
Valued Member
 
Join Date: Jun 2011
Location: Adelaide
Posts: 6,607
Default

Gen 4 Pajero has IFS and IRS so only driveshaft angle changes are on the axles.
If a CV/DOJ/BOJ has been running at a certain angle for a long time it will have worn in a set spot, change the axle angle too much and you could get noisy and vibration/harmonics under certain speed and load conditions.

What are the new front and rear ride heights measured from centre of the wheel hub to the underside of the wheel arch in a vertical line?

OJ.
__________________
2011 PB Base White Auto, Smartbar, Cooper STMaxx LT235/85R-16,TPMS, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .
Reply With Quote
  #4  
Old 6 Days Ago
4M41_WA 4M41_WA is offline
Junior Member
 
Join Date: Mar 2019
Location: Western Australia
Posts: 16
Default

Thanks for the replies guys,


Measurements from centre are -


Front drivers 560mm

Front passenger 562mm
Rear drivers 570mm
Rear passenger 580mm
__________________
2010 GLS 3.2 Auto
Reply With Quote
  #5  
Old 6 Days Ago
old Jack's Avatar
old Jack old Jack is offline
Valued Member
 
Join Date: Jun 2011
Location: Adelaide
Posts: 6,607
Default

Quote:
Originally Posted by 4M41_WA View Post
Measurements from centre are -
Front drivers 560mm
Front passenger 562mm
Rear drivers 570mm
Rear passenger 580mm
That is at the high end of a lift particularly in the front.
Factory specs are;
Front 503mm so at 560/562mm this is a 60mm lift, I suspect this is where your problem lies, especially since the vibration is only detectable when in 4H. Remove the 6mm spacers from between the strut top mount and the body and this should lower the ride height by about 10mm so it should improve things.
Rear 533mm so 570/583 is at the 50mm limit. 13mm left to right is quite a bit of difference. Where the coils left and right handed / different lengths? Have they been fitted in the correct position? Righthand side coils should be longer because of driver and fuel tank location. King Coils have the RH or LH printed on them if they are different lengths, so easy to checked

You should not be aiming for a level vehicle, you should be looking at maintaining the factory rake angle of 30mm difference when the vehicle is empty, so when loaded the vehicle sits level.

OJ.
__________________
2011 PB Base White Auto, Smartbar, Cooper STMaxx LT235/85R-16,TPMS, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .
Reply With Quote
  #6  
Old 6 Days Ago
4M41_WA 4M41_WA is offline
Junior Member
 
Join Date: Mar 2019
Location: Western Australia
Posts: 16
Default

Wow mate thanks for the awesome response. I checked and we put the springs in incorrect order. L/H in R/H position.

Will swap them over and remove the spacer and see how I go!
__________________
2010 GLS 3.2 Auto
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Vibration between 100-120km/h under acceleration after 50mm lift 4M41_WA Generation 4-2 Pajero 1 1 Day Ago 10:51 AM
50mm Lift NP_Pajero Generation 3 Pajero 8 12-01-12 06:57 PM
NT 50mm LIFT crackers Generation 4-2 Pajero 6 01-11-09 10:43 AM
Acceleration vibration ChrisS Mechanical 3 08-06-08 11:50 PM
50mm lift to much? Proudy Generation 4-1 Pajero 4 15-10-07 01:48 AM


All times are GMT +10. The time now is 06:25 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.