Looking to pick up some motor mounts for my '99 Si and I have a few ?'s

[Crow47]

Hey, all, long time no post! As the title says, I'm looking into getting some new motor mounts for my '99 Si with about 86k on the clock. I've been looking at getting some urethane mounts, but having never done this before I have a few questions.

-My primary concern is to make the car easier to shift under acceleration. Right now with my dry/cracked mounts, getting smooth shifts can be challenge. Feels like the drivetrain is rotating along the transverse axis. I understand the urethane mounts are stiffer, so the engine will move less, is that correct?

-However, being a DD, I don't feel like dealing with a super rough idle. I've been looking at the Innovative 60A. What kind of compromises do you make vs. the stock mounts?

-Last, do I need the two bolt or three bolt style mounts? I assume I have a hydraulic transmission? It's a stock motor and transmission, all original.

Thanks, all!

 

[CHILD]

Hey, all, long time no post! As the title says, I'm looking into getting some new motor mounts for my '99 Si with about 86k on the clock. I've been looking at getting some urethane mounts, but having never done this before I have a few questions.

-My primary concern is to make the car easier to shift under acceleration. Right now with my dry/cracked mounts, getting smooth shifts can be challenge. Feels like the drivetrain is rotating along the transverse axis. I understand the urethane mounts are stiffer, so the engine will move less, is that correct?

-However, being a DD, I don't feel like dealing with a super rough idle. I've been looking at the Innovative 60A. What kind of compromises do you make vs. the stock mounts?

-Last, do I need the two bolt or three bolt style mounts? I assume I have a hydraulic transmission? It's a stock motor and transmission, all original.

Thanks, all!

Yes you're right, the engine will move less.

When going with a 60a mount, initially and for the first few drives there will be vibration in the chassis and noise. It will eventually go away as the mounts break in and it'll feel much better than stock. I have 75a with a k24 and it feels stock at idle. So just expect the initial vibration.

As for the 2 or 3 bolt, a b16 is supposed to be 2 bolt, but just look at the mount yourself on the drivers side and check. I say this because I personally swapped my 2 bolt post for the 3 bolt one simply because I already had integra mounts. Somebody may have done the same if you're not the original owner

 

[Crow47]

Yes you're right, the engine will move less.

When going with a 60a mount, initially and for the first few drives there will be vibration in the chassis and noise. It will eventually go away as the mounts break in and it'll feel much better than stock. I have 75a with a k24 and it feels stock at idle. So just expect the initial vibration.

As for the 2 or 3 bolt, a b16 is supposed to be 2 bolt, but just look at the mount yourself on the drivers side and check. I say this because I personally swapped my 2 bolt post for the 3 bolt one simply because I already had integra mounts. Somebody may have done the same if you're not the original owner

When talking about 2 or 3 bolt, is that referring to the number of bolts that go into the engine? Or total across the whole mount?

 

[XpL0d3r]

Yes you're right, the engine will move less.

When going with a 60a mount, initially and for the first few drives there will be vibration in the chassis and noise. It will eventually go away as the mounts break in and it'll feel much better than stock. I have 75a with a k24 and it feels stock at idle. So just expect the initial vibration.

Yep. I had 75A mounts with my B18, but I could definitely feel the vibration throughout the entire time I had them. I think I just got used to it after a while, so I noticed it less over time.

You will feel the vibration a little more just because they're stiffer. But since I pretty much tuned out the stiffness with the 75A mounts, I'm sure with 60A it really will feel close to stock.

You can also get some Window weld and fill in your mounts. You'll need to let them / the car sit for a day or two though to fully cure. It works well though!

 

[Crow47]

Yep. I had 75A mounts with my B18, but I could definitely feel the vibration throughout the entire time I had them. I think I just got used to it after a while, so I noticed it less over time.

You will feel the vibration a little more just because they're stiffer. But since I pretty much tuned out the stiffness with the 75A mounts, I'm sure with 60A it really will feel close to stock.

You can also get some Window weld and fill in your mounts. You'll need to let them / the car sit for a day or two though to fully cure. It works well though!

Sounds like the 60A's are the right way to go for me. I have no intentions of making this any kind of competition/track car, I only want it to be more enjoyable to drive!

 

[CHILD]

When talking about 2 or 3 bolt, is that referring to the number of bolts that go into the engine? Or total across the whole mount?

It's talking about the post that is on the drivers side of the engine.

It quite literally has either 3 holes for 3 bolts, or two holes for two bolts. The two main bolt holes don't sit in the exact same spot for the 2 bolt as the 3 bolt, so that's why it's specific.

 

[Crow47]

It's talking about the post that is on the drivers side of the engine.

It quite literally has either 3 holes for 3 bolts, or two holes for two bolts. The two main bolt holes don't sit in the exact same spot for the 2 bolt as the 3 bolt, so that's why it's specific.

Awesome, thank you for the help!