Engine Mount Comparison

Engine Mount Comparison

Postby tonydobbs [OP] » July 29th 2020, 5:41pm

After hearing some conflicting opinions from forum members I ordered two different brands of engine mount. Finding information on this subject is a bit challenging, so I want to share my thoughts. Overall it seems clear that the Napa brand mounts have a higher quality stamping. The quality of the rubber seems very similar. The Napa ones have an oil coating, which makes them look a bit better, but the Anchor brand actually seems to have a bit more rubber. I will be installing the Napa ones in my van.

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Re: Engine Mount Comparison

Postby CopperFiremistCopperFiremist is online! » July 29th 2020, 6:01pm

Don't forget to use a step drill bit to open up the holes a tiny bit, You'll thank me later.
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Re: Engine Mount Comparison

Postby tonydobbs [OP] » July 29th 2020, 6:11pm

CopperFiremist wrote:Don't forget to use a step drill bit to open up the holes a tiny bit, You'll thank me later.

Good call! Thanks for the tip!
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Re: Engine Mount Comparison

Postby MechBob » July 29th 2020, 6:38pm

LOL,was thinking about this earlier, as there was yet another youtube astro MM vid.first a bit of history--
1 2wd and awd mounts are/were different.AWD original mounts were offset-the rubbers inside were offset,front to rear.
2 GM quit making them a long time ago
3 Anchor used to be the standard of quality,equivalent to factory,but seems they have went the china cheapo way
4 GM still sells the 2wd mounts,and some places sell them as awd mounts,they seem to sit lower,not recommended you try them, at almost 50 bucks a piece.Unless you have a 2wd
5 NAPA visually seems to have the best quality,of all the cheap china mounts.GM mounts are made in Korea
6 2 different poly insert mounts,Prothane and Energy Suspension.
7 Prothanes are only listed for 2wd,and do sit lower if put in an awd.this has been verified by others.To the point they shim them up
8 Buy general consensus on the net,Energy Suspension mounts are softer than Prothane
9 I have wondered about using cheap mounts(only ones we can get for awd,lol) and filling the gaps with 2 part urethane,like the rice burner street racers do.They make the 2 part stuff in 4 different "hardness's" Just food for thought.
10 OK done,lol!
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Re: Engine Mount Comparison

Postby tonydobbs [OP] » July 29th 2020, 6:42pm

Thanks for your thoughts Bob. One thing to point out is the Anchor branch ones say "Made in Korea" just like the GM ones.
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Re: Engine Mount Comparison

Postby tonydobbs [OP] » August 7th 2020, 4:55pm

I ended up using the Napa mounts and so far the van feels great. In the future I may try other mounts, but I just needed to get this done. I may be making some poly subframe bushings in the near future though, so I will let everyone know how that project turns out!
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Re: Engine Mount Comparison

Postby dcsleeper » August 7th 2020, 7:28pm

Thanks for this thread and the pics. I've made up my mind now, NAPA.

For next time:

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Re: Engine Mount Comparison

Postby Ironsides » August 14th 2020, 1:49am

Thanks Tony. Can clearly see the difference between the two.
Your 2435 are the same as the 2436
IMAG00763.jpg

I need to learn more of these prothane bushings Bob speaks of.
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Re: Engine Mount Comparison

Postby M_a_t_t » August 14th 2020, 5:35am

I have the energy suspension mounts in my V8 van. Haven't had them on very long. About 150 miles, but has felt very smooth even with the v8. I also have all new suspension and it has been riding very well so any mount problems should be more evident I would think.

I blasted and powder coated the OEM clam shells then used bolts to hold them together until assembly. The bolt heads were too tall though and hit the frame before the clamshells seated. I was lazy and put a few washers between the frame and mounts to fix it.

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Re: Engine Mount Comparison

Postby Ironsides » August 14th 2020, 12:06pm

Hi Matt, those look nice and new, good job. Yours fit, they're '95.
I still haven't found my OEM ones :eusa-think: I keep all the steel parts for recycling.
Tony's second image posted above shows a difference in height between the other and new style. If NAPA makes them to the new specs I'm guessing that's why they don't fit. Good to Know they ride nice with a V8 sitting on them.
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Re: Engine Mount Comparison

Postby Ironsides » August 17th 2020, 3:29pm

Found them... https://www.prothanesuspensionparts.com/7521 in case anyone else is looking.
Prothane_7521.png

Poly insert engine mounts for rear wheel drive RWD. I know you weren't looking for these Tony but thought to put this here in case anyone else went looking and stumbled on your thread.
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