If you're currently knee-deep in parts deciding which k swap ek mounts to buy, you probably already know that the engine mounts are the literal backbone of your build. Getting a K-series motor into a 1996-2000 Civic isn't just about bolting things in and hoping for the best; it's about geometry, clearance, and how much vibration you're willing to live with when you're sitting at a red light.
The EK chassis is a bit of a weird one compared to the EG or DC2. While those older chassis are relatively straightforward, the EK has some unique subframe characteristics that make choosing the right mounts even more critical. If you pick the wrong set, you might find your oil pan scraping on speed bumps or your hood refusing to close because the valve cover is sitting an inch too high.
Why Quality Mounts Actually Matter
It's tempting to hop on eBay and grab the cheapest set of "no-name" mounts you can find. I get it—K-swaps are expensive. By the time you buy the engine, transmission, ECU, and harness, your bank account is probably screaming for mercy. But honestly, the mounts are the one place where you don't want to cheap out.
Cheap mounts often have terrible fitment. I've seen guys struggle for hours trying to line up a bolt hole that's just half an inch off. Beyond the installation headache, poor-quality bushings will perish in months, not years. A K20 or K24 has a lot of torque, and if those mounts start flexing or sagging, you're looking at broken axles, exhaust leaks, and a motor that feels like it's trying to jump out of the engine bay every time you shift.
The Big Names in the Game
When it comes to k swap ek mounts, two names usually dominate the conversation: Hasport and Innovative.
Hasport Performance is basically the gold standard. They've been doing this since the early days of Honda tuning, and their engineering is top-tier. Their mounts are usually milled from 6061-T6 aluminum, which looks great and holds up forever. The best part about Hasport is the research they put into the bolt holes and the engine placement. They offer different "stages" or dual-height options that let you decide how low you want the engine to sit.
Innovative Mounts is another huge player. They're usually a bit more budget-friendly than Hasport, but they still offer a solid product. A lot of guys swear by them for street builds. They offer a variety of bushing stiffness levels, and their steel mount options are incredibly beefy. If you're building a dedicated drag car or a high-horsepower turbo setup, their "Extreme" series is usually up to the task.
Understanding Bushing Stiffness (Durometers)
This is where a lot of people make a mistake. When you're ordering your mounts, you'll usually see a choice of "durometer" ratings, like 62A, 70A, 82A, or even 94A.
- 62A (Street): This is the softest option. If you're planning to daily drive your EK, this is what you want. You'll get some vibration, but it won't rattle your teeth out. It feels firm but civilized.
- 70A (Race/Street): This is the middle ground. It's great for a weekend canyon car or a car that sees occasional track time. You will definitely feel the engine in the cabin, and your dashboard might squeak a bit more, but the engine won't move an inch.
- 82A and Up: These are for dedicated track cars. Unless you love the feeling of your skull vibrating while you wait for a green light, stay away from these for a street car. The power transfer is amazing, but the comfort is zero.
The EK Subframe Dilemma
One thing you have to decide before buying your k swap ek mounts is which subframe you're using. This is a bit of a "pro tip" area that confuses beginners.
Most mount kits are designed for the stock EK subframe. It works fine, but the geometry isn't always perfect for ground clearance. Some builders choose to swap in an EG or DC2 (Integra) subframe into their EK. Why? Because it sits differently and can actually provide better suspension geometry and more room for certain headers.
If you go this route, you have to buy mounts specifically designed for an EK chassis using an EG/DC2 subframe. If you buy standard EK mounts and try to use them on an Integra subframe, nothing is going to line up. Always double-check your subframe situation before hitting that "buy" button.
Ground Clearance vs. Hood Clearance
The K-series engine is tall—much taller than the D-series or B-series engines that came in these cars originally. This creates a bit of a "pick your poison" scenario with your mounts.
If you mount the engine high to save your oil pan from the pavement, you're probably going to have to cut the webbing out of the underside of your hood or buy a specialized "high-clearance" hood. If you mount the engine low to keep the sleeper look with a stock hood, your oil pan is going to be the lowest point of the car.
Most high-end k swap ek mounts are designed to find the "sweet spot," but it's something to keep in mind if you plan on slamming your car on coilovers. If the car is low, you absolutely need a beefy skid plate or a baffled oil pan that offers a bit more protection.
Installation Realities
Installing the mounts is usually a two-person job, mostly because the rear bracket is a total pain. The rear mount on an EK K-swap is notoriously tight. My advice? Bolt the rear bracket to the engine before you drop it in, then try to line it up with the mount on the subframe.
Another little trick is to leave all the mount bolts slightly loose until every single bolt is started. If you tighten down the driver-side mount completely, you'll never get the passenger side or the rear to line up. Give the engine some "wiggle room" while you're getting everything threaded.
Also, don't forget the ground wires. It sounds unrelated, but many people mount the engine, get everything beautiful, and then realize they didn't clean the paint off the mounting points. Since the engine is grounded through the chassis, having a clean metal-to-metal contact on at least one of those k swap ek mounts (or a dedicated ground strap) is vital for the car to actually start.
Dealing with Vibrations
It's worth mentioning again: a K-swap in an EK is going to vibrate more than your old stock motor. Even with the softest 62A bushings, the car is going to feel "raw." It's part of the charm, but if you're coming from a modern car, it can be a bit of a shock.
Over time, the bushings will "break in" slightly, and the vibrations will settle down a bit. If it's unbearable, check to make sure the engine isn't touching the firewall or any part of the chassis directly. Sometimes a header or an intake manifold might be vibrating against the body, making the interior noise way worse than it needs to be.
Final Thoughts on Choosing Your Kit
At the end of the day, your choice of k swap ek mounts dictates how the car feels every time you drive it. If you're building a budget track monster where comfort doesn't matter, go for the stiffest, cheapest name-brand steel mounts you can find.
But if you're building a car you want to actually enjoy on a Friday night cruise, spend the extra couple hundred bucks on a set of Hasport or Innovative mounts with street bushings. The fitment will be better, the engine will sit where it's supposed to, and you won't regret it six months down the line when you aren't replacing torn bushings.
Take your time, measure your clearances, and remember that the mounts are what keep all that K-series power from literally ripping itself out of your engine bay. Get it right the first time, and the rest of the swap will go a whole lot smoother.