vs
Engine radiator MISHIMOTO or KOYORAD
I usually Autox and track my rx8. My last event it was 90 outside and after fueling and a run my temp was only 205. I do have an aluminum misimoto radiator
Pros: excellent cooling performance, low engine temperature
Vehicle:
Mazda
Koyorad. Their fit and finish is OEM level.
Pros: OEM level fit, OEM level finish
One of the best replacement radiators for sure but you’ll have to get an external transmission cooler for it to work as the Koyorad doesn’t have an integrated transmission cooler that autos use.
Pros: best replacement radiator
Cons: no integrated transmission cooler
Vehicle:
Nissan
Replaced it with that exact same Mishimoto rad and have had zero issues with the fitment or durability for 10+ years and 60k miles later. I believe I saved ~$600 or so by not pursuing OEM replacement.
Pros: zero issues, good fitment, durable
Vehicle:
Nissan
Mileage: 60000 km
I got the mishi rad and racing thermo in mine for vegas. Love it, no issues thus far after 2 years.
Pros: no issues, durable
Vehicle:
Nissan
i went with a Koyorad SKU: 910-371 for my NB from Moss. I live in hot sunny florida, and took it to the track a few times. never an issue. i just drove it hard to the hardware store.
Pros: never an issue, good for track, good in hot climate
Vehicle:
Mazda
Part number: 910-371
Later I came across a deal for a Mishimoto radiator and had that installed. I’ve had no issues with my Mishimoto, and I bought it before seeing most recommending the Koyo Radiator over Mishimoto.
Pros: no issues
Vehicle:
Mazda
I put a Mishimoto rad in the R53 on the same terms as you @whalemingo - and only learned of Mishi's QC decline after I put it in the car. So far, it's been just fine.
Pros: so far, it's fine
Cons: QC decline
Vehicle:
MINI
stay away from mishimoto, their radiator quality is sub par
Cons: sub par quality
The Mishimoto all aluminum radiator (2 core) started leaking this past January (86k miles) in the top left corner (if you are facing the grill). From what I can tell with reviews, I was lucky to get 18k miles on that radiator.
Cons: started leaking, short lifespan
Vehicle:
Jeep
Mileage: 28968 km
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