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I'm not sure how a 1" (inside) diameter hose is supposed to fit over a 1.25" fitting, the flange for the hose clamp catch is 1.5" (outside diameter) overall.
I'd return the hoses, but I've butched them a bit in my attempts to get them on. I tried chamfering the inside edge of the lower hose and cutting about a half inch perpendicular slot on the side to get the opening a bit wider. I've also ground a bit off the radiator fitting, and used a bunch of the lube that came with the hoses. Is it normal for these to be this much of a headache? I've been at it for about 2 hours now and don't have anything to show for it.
Finally got it, but wasn't happy about how much BS the whole thing was. The step in diameter size between the fitting and hose just seems odd to me. I've doublechecked Mishimoto's website and these should be compatible. Are "performance" hoses supposed to be this tight?
What ENGINE did you purchase the hoses for ? It appears that you have SOHC radiator hoses and the inlet/outlet fittings on the radiator are for a DOHC application. The DOHC hose inner diameter is 1/8" LARGER than those of the SOHC hose.
The radiator has that engine listed as compatible on Mishimoto's site, and the hoses say they're compatible with stock civic radiators as well as Mishimoto's own. The hose fits the thermostat housing fine, but it's the fitment to the radiator that is the problem. They are also the only hoses Mishimoto has available for my civic.
The bends and length are all what I need them to be, so in theory everything should fit up fine. Which is why I was wondering if this is a normal thing for people to have to deal with.
I know the pictures don't tell the whole story, but that thing was seriously a bitch to get on there.
***edit: I just re-read your question, and those hoses are the only hoses they sell for all 92-00 civics.
Mishimoto may have "hosed" you. The radiator has larger B-series sized hose headers. You need to contact them to ask if they sent you the wrong one or what. It's not possible for a radiator to be compatible with both b & d series engines.
I'm guessing they are just scamming people, and you may need to look for some kinda reducers yo make it work.
Shame on them. They know they better. Always buyer beware with this stuff though, if you don't know exactly what you need, you should probably find a retail store instead of shopping on the 'net.
Agreed, but unfortunately this is my daily as well, so it's been mostly online shopping/the local O'Reilly's until back up and running. Radiator is the last piece to get me going. I did my share of research, and Mishimoto is supposed to be pretty top end with cooling systems, so I'd think they'd have this kind of stuff figured out on their end. I tripple checked compatibility on their site before ordering, so it's a little unfortunate it turned out this way.
Mishimoto's online information is crap... just like their products !!! I know of TWO people who have had issues with their radiators... one swelled up like a blowfish right out of the box (the replacement, which was another brand, worked just fine) and the other one began leaking in the flues. Mishimotos "Lifetime Warranty" didn't take care of either one !!!
All "D" SOHC series engines have 1 1/8" diameter radiator fittings on the radiator, thermostat housing, and head. The "B" DOHC series engines, which are also listed in the description posted above, have 1 1/4" hose fittings... which are 1/8" LARGER than the SOHC engines. The fact that the description listing shows the radiator fitting in both applications is not proper... yes, you forced that hose on, but it will not last that way. I have seen aftermarket radiators that claim to fit both sizes in the past... and the way that they do this is to utilize the SMALLER 1 1/8" hose fittings and include a pair of thin rubber hose adapters that slide onto the fittings before you push the larger DOHC hoses on the fittings. Your situation is the opposite: Big fittings with a Smaller hose.
I've done other vehicles, but I'm new to civics. This is my first civic, so it's mostly been word of mouth from forum research up unti now. I ordered a Yonaka catback last week. It hasn't arrived yet, but it was my understanding that Yonaka was the go to for exhaust and Mishimoto was the cooling system king.
Either way, those hoses were both enough of a pain in the *** to get on that they're staying until they fail. Hopfully that's several years down the road. We'll see.
Mishimoto used to be, just the same way samco hoses used to be as well. But with time and technology, come cheaper equivalent parts. I have no shame ordering something cheap on amazon or ebay and promptly returning it if it doesn't seem fit for the job.
I've done other vehicles, but I'm new to civics. This is my first civic, so it's mostly been word of mouth from forum research up unti now. I ordered a Yonaka catback last week. It hasn't arrived yet, but it was my understanding that Yonaka was the go to for exhaust and Mishimoto was the cooling system king.
Either way, those hoses were both enough of a pain in the *** to get on that they're staying until they fail. Hopfully that's several years down the road. We'll see.
If the hoses fit your engine, as in slide on the thermostat housing hose fitting and the cylinder head hose fitting... the hoses aren't your problem. The radiator is.
That's the conclusion I came to as well after everything. Just wasn't an ideal situation given the information on Mishimoto's website before I ordered. I'm making it work though.
Mishimoto was never top end, sorry. They’ve always made “just okay” parts and given lots away to magazines and insta-builders so that their product ends up on high end very visible builds.
if you want top end, you need to look at C&R, PRL, Griffin, etc.. Koyo also makes really good cores but their Civic radiators have some fitment issues.
Samco hoses are still the best in the business. They are worth the extra money and hassle to acquire. Silicone hoses in general are not a great product for daily driver cars. They all naturally lose a little water over time and are better suited to race/hot rod use in cars that see more maintenance and looking after.
Mishimoto cooling hose fitment
