Name: Catch Can Kits, 89-05 Mazda MX-5
Brand: Radium Engineering
SKU: NULL

COMPATIBILITY

20-0336-FL & 20-0337-FL Kits

These kits are mounted near the left side strut tower.

89-97 Mazda MX-5 Miata NA
98-05 Mazda MX-5 Miata NB

20-1336-FL, 20-1337-FL, & 20-1338-FL Kits

These kits are mounted on the right side of the engine bay near the coolant reservoir.

98-05 Mazda MX-5 Miata NB

NOTES

Suitable for 1.6L and 1.8L engines.
The OEM air intake box cannot be used with the 20-0336-FL and 20-0337-FL kits.
20-1336-FL, 20-1337-FL and 20-1338-FL are compatible with both LHD and RHD models.

OVERVIEW

The catch can draws out oil and water condensation from the crankcase gasses that would otherwise be drawn into the intake manifold. This prevents oil buildup in the intake, intercooler system walls, throttle body, and intake manifold. This effectively raises the octane, can increase engine performance from cleaner inlet air, and can lower hydrocarbon emissions. The closed system prevents unwanted oil vapors from entering into the cabin. Catch can kits include everything needed for a complete installation.

FLUID LOCK® CATCH CANS

In 2022, Radium Engineering implemented a revolutionary design change to the 7 fluid ounce standard catch can. An inherent problem always existed with typical catch cans when not serviced regularly. The fluid contaminants will eventually leave the reservoir pouring into the air intake system causing poor engine performance. To resolve this issue, Radium created the Fluid Lock® Catch Can. This contains a patented mechanism that prevents the reservoir from overfilling and traps the collected fluids until it is emptied.

COLLECTION & EMPTYING

The rate that your catch cans will collect oil and moisture contaminants will vary from one individual vehicle to the next, so there is no set emptying interval. PCV catch cans tend to collect more than CCV catch cans. Check the level of the catch cans using the integrated dipstick starting at 3-4 weeks of driving and repeat as needed to determine how often they should be emptied based on what you see.

Catch cans can be emptied by unscrewing the lower reservoir and removing it from the vehicle to dump out, or in cases where there is available space under the catch can, the Petcock Drain Kit can be installed and used to drain them.

In cases where oil collection is excessive you may have to address an issue with the engine. The reasons a catch can will collect an excess of oil include

Excessive blowby from engine damage
Crankcase windage from an over-full oil level
Poor placement of breather ports and/or poor baffling inside breather ports
PCV valve not closing and leaking under heavy load

20-0336-FL Catch Can Kit 89-05 Mazda MX-5

For the 89-05 NA and NB models, this kit mounts at the LH strut tower near the exhaust manifold using OEM holes and integrate perfectly with the surrounding components.

There are enough components in this kit to plumb it to the PCV, or to the crankcase (CCV) side of the engine. If purchasing the dual catch can kit, all engine breather ports will be isolated for optimal performance.

When using the catch can on the PCV side, it runs inline with the PCV (positive crankcase ventilation) valve and retains the factory function. When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV valve closes and this hose experiences no flow. The PCV hose will experience metered flow when the engine is idling, steady state cruising, and decelerating. This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.

NOTE: Because Radium Engineering catch cans are pressure sealed, they are great for boosted applications so intake manifold connection is permitted.

When using the catch can on the CCV side, it runs inline with the crankcase port. At low loads, it experiences atmospheric pressure. But when the engine is at high load (WOT), this hose will experience high flow out of the crankcase. This would normally lead to oil and sludge accumulation in the air filter intake pipe. If equipped, oil accumulation will occur in the intercooler which lowers the thermal efficiency properties of the heat exchanger and leads to decreased performance.

20-0337-FL Dual Catch Can Kit 89-05 Mazda MX-5

For the ultimate in engine protection, Radium Engineering recommends the Dual Catch Can Kit. This kit utilizes both the CCV and PCV catch can kits.

20-1336-FL PCV Catch Can Kit 98-05 Mazda MX-5

For the 98-05 Mazda MX-5 (NB) models, this kit mounts on the right hand side near the coolant overflow using OEM holes and integrate perfectly with the surrounding components.

The kit runs inline with the PCV (positive crankcase ventilation) valve and retains the factory function. When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV valve closes and this hose experiences no flow. The PCV hose will experience metered flow when the engine is idling, steady state cruising, and decelerating. This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.

NOTE: Because Radium Engineering catch cans are pressure sealed, they are great for boosted applications so intake manifold connection is permitted.

20-1337-FL CCV Catch Can Add-On 98-05 Mazda MX-5

For the 98-05 Mazda MX-5 (NB) models, this kit mounts on the right hand side near the coolant overflow using OEM holes and integrate perfectly with the surrounding components.

There are enough components in this kit to add the CCV catch can kit to an existing installation of the 20-1336-FL PCV kit. This kit requires the PCV catch can to be installed. If the PCV kit has not already been purchased, choose the 20-1338-FL dual catch can kit instead.

20-1338-FL Dual Catch Can Kit 98-05 Mazda MX-5

For the 98-05 NB Models, this kit mounts on the right hand side near the coolant overflow using OEM holes and integrate perfectly with the surrounding components.

This kit includes all components of the 20-1336-FL PCV kit and the 20-1337-FL CCV add-on kit in one single product.