Mishimoto radiator redesign is in......FAILURE

[IwantMKIII]

For those who have and have had Mishimoto radiators, the new design is finally in and in my possession :icon_bigg. Only took about a year and three months :aigo:. It looks exactly the same, however, according to Pat, the overall design was thinned out about 10mm which should be more than enough to help any of us experiencing issues.

For those who have no idea what issues a Mishi rad may present, read here: http://www.supramania.com/forums/sh...-the-same-way-fan-blade-impact-(anyone-else-)

I will be installing the new replacement soon and will keep updates of its success or failures

 

[IwantMKIII]

Update.

Failure. Video below.

Old rad out, plus double row oil cooler shot :

Sits too high for one:

too much clearance to fan shroud:

Leads to this after .75 miles:

[video=youtube;rujHoWvBX2w]http://www.youtube.com/watch?v=rujHoWvBX2w[/video]

 

[suprarx7nut]

Ouch, that height isn't even close. That's a bid error. Did they enlarge the inlet or outlet at all?

Sent from my ADR6400L using Tapatalk

 

[IwantMKIII]

inlet/outlets are stock size iirc, no need to increase. Just cut out my shroud piece by piece

Needless to say.....this is round 4....im frustrated. I've been through multiple fans, two shrouds, 4 mishi rads, 2 stock rads and lots of money in coolant.

 

[A. Jay]

I was thinking back to my problem with my Mishimoto rad... What are we doing wrong? Aren't PWR rads even thicker, no one has problems with those.

 

[IwantMKIII]

I was thinking back to my problem with my Mishimoto rad... What are we doing wrong? Aren't PWR rads even thicker, no one has problems with those.

This is what I cant figure out. I don't understand why some of us have this problem and others dont.


Is anyone aware of ANY change at all in chassis design to how the radiator sits year to year? I'm not.

 

[A. Jay]

My engine/tranny mounts are originals (btw gte/5 spd), maybe that's it?

 

[IwantMKIII]

I thought about mounts. I know mine are good. BUT, the mounts should absorb most of the weight of the engine/trans and absorb most of the torsional stress. The mounting system should not effect any back and forth play from end to end. Even while it might slightly, there is quite a bit gap between the rad and fan blade, there's no way they can give that much.

 

[Enraged]

tell them to buy a PWR and copy it exactly?

 

[suprarx7nut]

Fwiw, my mishimoto fit nearly perfectly. Shroud, height, depth were all spot on.

My only complaint was that the inlet and outlet were 2mm too small in diameter and I had to use extra worm gear clamps because the Toyota tension clamps don't grab enough.

Iwantmk3, do you have a CAD program? Id be happy to draw mine up in solidworks and compare how our are different. My cars a 90 na chassis and it fits like a glove.

Sent from my ADR6400L using Tapatalk

 

[destrux]

Quick thought...

Is the core more restrictive (to airflow) on the Mishimotor rad?

If it is, the fan could be drawing itself into the radiator.

Think about it. If you stick a flat board in front of a pulling type fan, the blades will pull a vacuum between the fan and the board, which will flex the fan blades and draw them closer to the board.

If the other aftermarket cores (that aren't problematic) have a lower fin density (which would pose less of a restriction) then maybe that's why the fan is only sucking itself into the core on the Mishimoto radiator? The slower, but hotter airflow would also heat the plastic fan blades up more and allow them to flex even more.

FWIW, my stock rad was very close to the fan on my engine because my motor mounts were welded wrong (since been fixed) and I had no problems with fan contact.

 

[te72]

I was thinking back to my problem with my Mishimoto rad... What are we doing wrong? Aren't PWR rads even thicker, no one has problems with those.

You can thank IJ for that... I have one, and for all the trouble the OP has went through, he probably could have picked up a PWR, used the stock fan and shroud, and not had to deal with all these headaches. Sorry to put it that way, I never like seeing someone go through this much trouble over something that should have been designed properly in the first place. Would be worth mentioning to Mishimoto all the crap you've been through on behalf of a sub-par product that they make.

I'll not likely ever buy anything of theirs again, after the disappointment I've experienced with their e-fan shroud, but it was a timing thing on my part, entirely my own fault for being impatient. This radiator thing doesn't represent their company well at all...

 

[IwantMKIII]

Fwiw, my mishimoto fit nearly perfectly. Shroud, height, depth were all spot on.

My only complaint was that the inlet and outlet were 2mm too small in diameter and I had to use extra worm gear clamps because the Toyota tension clamps don't grab enough.

Iwantmk3, do you have a CAD program? Id be happy to draw mine up in solidworks and compare how our are different. My cars a 90 na chassis and it fits like a glove.

Sent from my ADR6400L using Tapatalk

I do not anymore, computer crashed about a month ago. Though now that you mention it, I do recall the stock springs not fitting on older versions, but I had no problem with the lower spring clip. The upper I already had replaced with a worm gear for other reasons.

At this point, people need to be made full aware of the issue with mishimoto. If that hurts their business, that's their fault. I've offered my time, suggestions, consultations, and to take my car down and use it as a test vehicle so long as I was able to oversee EVERYTHING. I was denied in most of these offers and its their own damn fault.

You can thank IJ for that... I have one, and for all the trouble the OP has went through, he probably could have picked up a PWR, used the stock fan and shroud, and not had to deal with all these headaches. Sorry to put it that way, I never like seeing someone go through this much trouble over something that should have been designed properly in the first place. Would be worth mentioning to Mishimoto all the crap you've been through on behalf of a sub-par product that they make.

I'll not likely ever buy anything of theirs again, after the disappointment I've experienced with their e-fan shroud, but it was a timing thing on my part, entirely my own fault for being impatient. This radiator thing doesn't represent their company well at all...

I see your point Te, and I agree, but at this point I'm just determined to get it right. I don't want other people to run into this. Add in the fact I don't have money to throw around on yet another radiator, I get replacements for free in the mean time until they get it right.

 

[87M-GTE]

I went with a fluidyne, no complaints.

Glad to hear a review, sorry to hear your bad luck.
Hopefully someone at Mishimoto will resolve the issue for you!

Sam

 

[hvyman]

That sucks. I'm prolly just going to buy a koyo now.

 

[dubsupra209]

I went with a fluidyne, no complaints.

Glad to hear a review, sorry to hear your bad luck.
Hopefully someone at Mishimoto will resolve the issue for you!

Sam

i told these guys in the 1st thread, i too have fluidlyne fits like a glove no problems...quality cost money get a pwr or fluidlyne people!

 

[IJ.]

You can thank IJ for that... I have one, and for all the trouble the OP has went through, he probably could have picked up a PWR, used the stock fan and shroud, and not had to deal with all these headaches. Sorry to put it that way, I never like seeing someone go through this much trouble over something that should have been designed properly in the first place. Would be worth mentioning to Mishimoto all the crap you've been through on behalf of a sub-par product that they make.

I'll not likely ever buy anything of theirs again, after the disappointment I've experienced with their e-fan shroud, but it was a timing thing on my part, entirely my own fault for being impatient. This radiator thing doesn't represent their company well at all...

You're welcome!

I actually went to the trouble of doing some drawings taking pics and sending PWR a stock Rad for a pattern, Mishi might benefit from this approach as they seem "willing" to work with the customers on this.

 

[IBoughtASupra]

I bought a Koyo. Fits like a glove, only issue I had was that I had the bung at the bottom of the radiator plugged since it is a provision for the JZ hydrofan setup.

 

[IwantMKIII]

I went with a fluidyne, no complaints.

Glad to hear a review, sorry to hear your bad luck.
Hopefully someone at Mishimoto will resolve the issue for you!

Sam

i told these guys in the 1st thread, i too have fluidlyne fits like a glove no problems...quality cost money get a pwr or fluidlyne people!

Been through a Fluidyne already. They're nice quality, but grossly lack cooling capacity for the price.

 

[89gte]

Been through a Fluidyne already. They're nice quality, but grossly lack cooling capacity for the price.

I have an 89 T with Mishimoto radiator, it's been working great for a while now. No fitment issues.