Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-20-2003, 02:35 AM
Registered User
 
Join Date: Dec 2000
Location: Battle Ground, WA
Posts: 576
Excessive rear wheel "hop"

Hi all,
I don't know if you remember my '82 300D that I installed a 4.3L Astrovan V6 in? Well, I have a question for you! It's raining here in wet Washington, and I notice that when I depress the accelerator pedal too enthusiastically, the car "breaks loose", and I seem to get a lot of rear wheel hop, more than I remember last year, and more than when the pavement is dry. What are the various causes of this - do you think it needs shocks, or is it just the nature of the beast, or could the rear rubber mounts be getting worn, or what??
(Can't let those little Japanese roller skates get ahead of my "diesel" Merc! - HAH)
Thanks,
Richard Wooldridge
'82 300D/4.3L V6
Etc...
Reply With Quote
  #2  
Old 11-20-2003, 11:51 AM
Registered User
 
Join Date: Mar 2003
Location: Southern California
Posts: 2,036
Insufficient damping in the wheel hop frequency range is the cause, and this is a common problem on high powered cars. Unless the body wallows around in normal driving the shocks are probably okay.

Consider that the currently installed engine has considerably more torque than the original diesel. The best solution is to be delicate with the throttle when conditions are wet.

Duke
Reply With Quote
  #3  
Old 11-20-2003, 06:50 PM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Springs weak with age are probably the culprit...
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #4  
Old 11-20-2003, 11:03 PM
JetForeman
Guest
 
Posts: n/a
do you have different tires on it than what you had last year? I've had several cars in the past that did this after I changed the tires to a different brand. At the time I assumed it due to different coefficients of grip (traction).
Reply With Quote
  #5  
Old 11-21-2003, 10:11 AM
Registered User
 
Join Date: Dec 2000
Location: Battle Ground, WA
Posts: 576
Same tires...

Hi there,
The tires are the same ones, but I have put around 75K on the car in the last two years. In the summer when it breaks loose it makes a more even "skree" type of sound, not much wheel hop at all. I do think the added torque has a lot to do with it, but also am wondering if some rubber parts could be deteriorating, as it does seem worse than last year.
Hey, Jetforeman, those Nissan pickups are made out of good stuff, I had one I put over 350K on before passing it along to my son. Also had several long-lasting Z cars, actually still have a 2+2 that I should get rid of, but it still runs like a clock.

Richard Wooldridge
'82 300D/4.3L V6
Etc...
Reply With Quote
  #6  
Old 11-21-2003, 11:06 AM
JetForeman
Guest
 
Posts: n/a
Re: Same tires...

Quote:
Originally posted by Richard Wooldridge
Hi there,
The tires are the same ones, but I have put around 75K on the car in the last two years. In the summer when it breaks loose it makes a more even "skree" type of sound, not much wheel hop at all. I do think the added torque has a lot to do with it, but also am wondering if some rubber parts could be deteriorating, as it does seem worse than last year.
Hey, Jetforeman, those Nissan pickups are made out of good stuff, I had one I put over 350K on before passing it along to my son. Also had several long-lasting Z cars, actually still have a 2+2 that I should get rid of, but it still runs like a clock.

Richard Wooldridge
'82 300D/4.3L V6
Etc...
"Old Blue" (Nissan) is a tough cookie. I adjusted the valves on it last year for the first time in it's life!! And I barely had to make any adjustments.....And get this, last week I had an emissions check done on it and it blew cleaner than my E320 I just got rid of. I just shake my head in amazement and run the piss out of it. You would be surprised at how many people have stopped by my house in passing wanting to know if I would sell it. The answer is always and will always be a resounding NO!!
Reply With Quote
Reply

Bookmarks

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 07:05 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page