hey guys i have a problem that i dont know whats making it happen!!

i have a 92 integra with a 2nd gen jdm b16a
when i jack up my car and start it and put it into first gear and let it go or gas it my motor lifts up and down, up and down over and over again and the faster i go the faster it goes up and down!! just put in both new axels and it still happens.

my friends and family said that its because of my bad motor mounts because my driver side motor mount is pretty torn up but im not sure if it is or not!!

also when i drive it down the street it makes like a 'clonking' noise and the faster i go the faster the clonking/knocking noise is!

HELP?!!

 

replace your mounts

 

is that really the issue?

 

think about it. the mounts purpose is to hold your engine in place. if your engine is moving around they're not doing their job now are they?

 

yeah well, at a certain point is when the motor lifts up. if it was really the mounts wouldnt it constintly jump up in and down instead of at a certain point? but idkk. i'll try that out.

 

When you car is just sitting there off, open the hood grab the head or intake manifold and try to move the motor

 

i already did, its stiff.

 

Well as dood said your motor mounts are the only thing that could cause your engine to move. Id visually inspect all of them and make sure they are all tight

 

heres a video i made earlier today.

http://www.youtube.com/watch?v=LyYTJQWIi1Q&feature=plcp

 

Definitely looks like the mounts. Does it do it when its not jacked up?

 

well when its not jacked up i cant really tell because i cant drive and watch it at the same time, but when i drive it it'll make a knocking noise, the faster i go the faster it knocks. and this only happens when its in gear.

 

It won't happen if you rev the motor up in neutral?

 

nope it wont happen if its in neutral, only when its in gear.

 

what this doood said, its kind of obvious

 

not sure how this thread is still going... Takes all of 10 mins to check all your mounts.

 

lol. you can clearly see it moving inside the mount.

 

Wow, yea man change those mounts...or at least make sure all the motor mount bolts are torqued to spec. That's not good man. I've got the same car and same motor and my mounts are solid. I can rev my motor all the way up to redline and it hardly moves at all. Make sure those bolts are all tight and then think about getting some solid mounts. I've actually got 2 hockey pucks in place of my original driver side mount. For $10 a bit of work it's the best mount i've ever had

 

You're posting this in the engine management and tuning forum so that must mean it needs a tune. Simple as that!

Hockey pucks...lmao. I'm sure it works however, I feel as if I just travelled into the back 40 where the yocals use hockey pucks as lift kits and rad mounts for there trucks.

Oh and after watching that vid of your motor bouncing up and down. Your issue has nothing to do with your motor mounts. Looks to me to be more like a drive shaft/CV joint issue. Something is out of balance or not centred properly. If your engine is bouncing like that at a steady idle. It is definitely not the mounts........If you take it out of gear and let it idle it stops bouncing correct? If you give it a shot of gas in natural does the engine bounce?

 

no the motor doesnt bounce when its in neutral. i can redline it all the way to 8500 and the motor still doesnt jump, only does when its in gear. and i doubt its a CV joint issue because i just replaced both passenger and driver side axels. it possible could be my drive shaft but i dont know how to check if its bad or not.

 

Agree^^^^^^^^Not trying to make u look stupid but check ur driver side axle,it should be spline to hole not spline to spline u might of throw the wrong axle on the driver side.

 

Just saying I've seen it happen,many times the same issue,same motor going up and down.

 

No im pretty sure i got the correct axel for the driver side. I bought a b series DA axel for the driver side which im sure is correct. And it connected to the drive shaft just fine. because in the video both wheels are spinning just fine,
But i idk.

Im gonna have to try to go under the car and look at it from below to see whats really causing it.

 

looks like the inner joint of the CV boot got misaligned on the install. also, just because both wheels spin when its in the air, doesn't mean it has LSD. Not saying it DOESN'T but here is the sure-fire way to check:
http://technet.ff-squad.com/how-to/lsdcheck/

 

yeah my tranny says LSD on it lol, if it wasnt LSD i wouldnt of said it was. and im pretty sure i installed it correctly. in a short part of the video it shows the join spinning just fine.

 

so would i need to buy a b16 half shaft or a the 90-93 integra half shafts?