front of vehicle bumping. help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

l33tmonkeyman · 04-13-2005, 08:42 PM

so today i was out enjoying my new suspension. took a furn fairly fast and now i hear a thumping from the front of my vehicle that stays steady and gets faster as my speed gets faster. it sounds kinda like the thunking as if i had a flat tire but i dont. it also is noticable at very low speeds (5mph) and i can tell the whole front end moves every time it thunks. i just put new adjustable tension rods in, rucas, and coilovers. its a 92 s13. i checked all the rods in the front and the only thing i noticed was that my drivers side tie rod end boot was tore a little. any help is greatly appreciated, its sad when ya put sumin in and another thing goes wrong.
Ryan

007jpang · 04-13-2005, 08:49 PM

did you get an alignement???

l33tmonkeyman · 04-13-2005, 08:57 PM

yea, i got an alignment monday morning. everything was runnin great until a couple hours ago

m0rex · 04-13-2005, 10:25 PM

Something is loose. Im almost 100% sure its the tension rods. Tigheten those up because they get loose after you drive them for a bit.

l33tmonkeyman · 04-13-2005, 10:51 PM

i will check that out, thanx. i torqued the tenstion rods to the factory specs when they got put on but i shall check them tomorrow. if anyone has any other ideas of what it could be please let me know. one of my friends said that it could be an off balance wheel but i checked them and there are all the weights on there i thought. if a wheel that is off balance could cause this could someone please explain it to me.
Ryan

m0rex · 04-13-2005, 11:22 PM

I torqued mine to oem specs and they got loose. Like is said thats the problem.

l33tmonkeyman · 04-14-2005, 12:04 AM

i will check that, thanx man for your input!
Ryan

1101 · 04-14-2005, 11:28 AM

check the purches on the coilovers to see if there loose, I had a thud sound coming from the front left and couldnt find it. I jacked the car up and noticed I could move the coilover body and spring by hand but wasnt able to when the weight of the car was on it.

l33tmonkeyman · 04-14-2005, 11:53 AM

ok, i will check that right now. i just checked and all the bolts seem to be tight

l33tmonkeyman · 04-14-2005, 12:41 PM

so i checked the perches and everything in the front suspension. the springs are snug on the coils. all the bolts are tight and i am going to check tire balance in a couple days when i have access to the balancer. my drivers side tie rod boot is tore but doesnt look that bad yet. i can feel it in the steerign wheel though. I also looked at the tires and it seemed like there was one part on both tires that is a little flatter than the rest. as if i locked up the wheels braking and made the tread there smaller. this problem is really pissing me off.

drew935 · 04-14-2005, 02:55 PM

check you swaybar endlink as well. I know that those make clunks at any speed...

HyperTek · 04-14-2005, 05:39 PM

check the tension rod bracket.. right under the radiator support.. ive noticed on a few s13s that the bolt (often overlooked) can come loose.

***S14DB*** · 04-14-2005, 06:06 PM

Quote:

Originally Posted by l33tmonkeyman

I also looked at the tires and it seemed like there was one part on both tires that is a little flatter than the rest. as if i locked up the wheels braking and made the tread there smaller. this problem is really pissing me off.

Sounds like a flat spot. Take it to a tire shop. Looks like you'll need a new tire.

l33tmonkeyman · 04-14-2005, 07:45 PM

ok, i will double check all the bolts. i am going to throw some old rims i have on the front to see if i can narrow it down to something dealing with either the rim or tires or cancel those out of my problems. thanks
Ryan

04-13-2005, 08:42 PM	#1
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	front of vehicle bumping. help so today i was out enjoying my new suspension. took a furn fairly fast and now i hear a thumping from the front of my vehicle that stays steady and gets faster as my speed gets faster. it sounds kinda like the thunking as if i had a flat tire but i dont. it also is noticable at very low speeds (5mph) and i can tell the whole front end moves every time it thunks. i just put new adjustable tension rods in, rucas, and coilovers. its a 92 s13. i checked all the rods in the front and the only thing i noticed was that my drivers side tie rod end boot was tore a little. any help is greatly appreciated, its sad when ya put sumin in and another thing goes wrong. Ryan

04-13-2005, 08:49 PM	#2
007jpang Zilvia Junkie Join Date: Jan 2004 Location: Daly City/ San Jose Posts: 495 Trader Rating: (0) Feedback Score: 0 reviews	did you get an alignement??? __________________ April 24th, 1915 http://www.shockdrifting.com

04-14-2005, 02:55 PM	#11
drew935 Zilvia Addict Join Date: Nov 2003 Location: Silver Creek - San Jose Posts: 996 Trader Rating: (0) Feedback Score: 0 reviews	check you swaybar endlink as well. I know that those make clunks at any speed... __________________ I'm driving fast -drew

04-14-2005, 05:39 PM	#12
HyperTek Post Whore! Join Date: Mar 2003 Location: Cali Posts: 13,224 Trader Rating: (3) Feedback Score: 3 reviews	check the tension rod bracket.. right under the radiator support.. ive noticed on a few s13s that the bolt (often overlooked) can come loose. __________________ Keep it Classy

04-13-2005, 08:57 PM	#3
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	yea, i got an alignment monday morning. everything was runnin great until a couple hours ago

04-13-2005, 10:25 PM	#4
m0rex Zilvia FREAK! Join Date: Sep 2004 Location: Nebraska Posts: 1,070 Trader Rating: (0) Feedback Score: 0 reviews	Something is loose. Im almost 100% sure its the tension rods. Tigheten those up because they get loose after you drive them for a bit.

04-13-2005, 10:51 PM	#5
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	i will check that out, thanx. i torqued the tenstion rods to the factory specs when they got put on but i shall check them tomorrow. if anyone has any other ideas of what it could be please let me know. one of my friends said that it could be an off balance wheel but i checked them and there are all the weights on there i thought. if a wheel that is off balance could cause this could someone please explain it to me. Ryan

04-13-2005, 11:22 PM	#6
m0rex Zilvia FREAK! Join Date: Sep 2004 Location: Nebraska Posts: 1,070 Trader Rating: (0) Feedback Score: 0 reviews	I torqued mine to oem specs and they got loose. Like is said thats the problem.

04-14-2005, 12:04 AM	#7
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	i will check that, thanx man for your input! Ryan

04-14-2005, 11:28 AM	#8
1101 Leaky Injector Join Date: May 2003 Location: Tallahassee Age: 39 Posts: 76 Trader Rating: (0) Feedback Score: 0 reviews	check the purches on the coilovers to see if there loose, I had a thud sound coming from the front left and couldnt find it. I jacked the car up and noticed I could move the coilover body and spring by hand but wasnt able to when the weight of the car was on it.

04-14-2005, 11:53 AM	#9
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	ok, i will check that right now. i just checked and all the bolts seem to be tight

04-14-2005, 12:41 PM	#10
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	so i checked the perches and everything in the front suspension. the springs are snug on the coils. all the bolts are tight and i am going to check tire balance in a couple days when i have access to the balancer. my drivers side tie rod boot is tore but doesnt look that bad yet. i can feel it in the steerign wheel though. I also looked at the tires and it seemed like there was one part on both tires that is a little flatter than the rest. as if i locked up the wheels braking and made the tread there smaller. this problem is really pissing me off.

04-14-2005, 07:45 PM	#14
l33tmonkeyman Zilvia Member Join Date: Jul 2004 Location: Prior Lake, MN Age: 39 Posts: 215 Trader Rating: (0) Feedback Score: 0 reviews	ok, i will double check all the bolts. i am going to throw some old rims i have on the front to see if i can narrow it down to something dealing with either the rim or tires or cancel those out of my problems. thanks Ryan