Engine Mounts

[Ojas]

I recently purchase a fairly high-milage 1991 NSX. The engine "bucks" when accelerating (after coasting) or accelerating from a stop. I figure the engine (or tranny?) mounts need to be replace (or adjusted?). Before I take to the shop, is there a way for me to determine the if mounts need to be replaced?

I supposed this would be a job for the dealer. For those of you that have had similar work done, what should I expect to pay?

Thanks in advance.

 

[ck]

I had this happen to me on an Integra before. Turns out the engine mounts were just loose. A few turns with a ratchet and they were ok on that car.

 

[maomaonsx]

If you did decide to replace your mounts. Please let me know, I'll buy your old ones.

------------------
G Dummy~

Faster than stock.

 

[Ojas]

CK:

Thanks so much for the tip. I checked both mounts: I could not even turn the rear/lower one, but managed to get maybe 1/4 turn (maybe less) on the upper/front one. I was kind of skepitcal such small/quick adjustment could make a significant difference given how badly it bucks.

I just got back from a quick drive and the NSX is as tight, tight, tight! Just like my first NSX! Thanks again!!!

 

[CityofAngels]

You have 4 motor mounts: 1 nose and tail, 1 at each shock tower. Check them all. Sounds like a shop forgot to tighten things up after removing the tranny/engine.

Seriously, I would check the car over for loose bolts. Get a service manual for torque specs. I got my car back from the paint shop and had a field day correctly putting the nose back on my '92. A 12 year old girl with pliers could have done a better job than this L.A. paint shop. I shudder to think the cost of all the parts that were going to fall off. I only lost 2 easily replaceable bolts.

 

[Kinan]

I have a '92 with 117k and a repaired snap ring.
I just checked my mounts and found the one under the air cleaner to be 1 full turn loose. The rest were very tight.
Its amazing the change this small adjustment had on the car. Much smoother and easier to drive.

Thanks for the info!

 

[burbel]

I want to tighten mine, too. Can anyone tell me what page in the shop manual covers this?

I haven't noticed a problem, but tightening 4 bolts can't hurt, IMHO.

TIA!

 

[ck]

Ojas, Kinan,

Glad the info was helpful. I was also surprised that such a simple fix would repair the problem.

Chris

 

[Ojas]

burbel, I found the diagrams on pages 5-26 - 5-28 (pages 69-71 of the pdf) helpful.

 

[burbel]

Thanks Ojas, I will take a stab at that this weekend!

Much obliged. <tips hat>