2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Which Radiator???

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Old Mar 28, 2007 | 09:01 AM
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Which Radiator???

I've got a fairly stock 87 NA, & the radiator on it has started to develop a slow trickle. Soooo, It's going to need replaced in the near future.

Thing is, I see an quite a few aftermarket radiators... & claims that the stock radiators should be upgraded, etc... How much is hype, & how much is just the tuner mentality of "upgrade EVERYTHING". If the stock units are horrible, & I should go w/ a Koyo... thats fine. I just want to an appropriate decision.
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Old Mar 28, 2007 | 09:03 AM
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u have pm!
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Old Mar 28, 2007 | 09:36 AM
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Originally Posted by SpooledupRacing
u have pm!
OK...that was inevitable.


Your stock radiator lasted for twenty years, which can hardly be considered "horrible".
If you had no cooling issues before then there is no compelling "performance" reason to upgrade if you don't want to.
I'd go by price, fitment and looks.
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Old Mar 28, 2007 | 09:48 AM
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Originally Posted by clokker
OK...that was inevitable.



if your rad isnt leaking, your coolant temps are fine and you arent building a big turbo set up the stock rad should be fine. if upgrading i'd go with koyo.
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Old Mar 28, 2007 | 10:05 AM
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Like I pm'ed u abotu the stock radiator is not a horrible radiator u have to take all cooling items into effect..

good fan, good stat, good radiator, good coolant if all checks out u will be fine ESPECIALLY for what u have going on..

if u want to upgrade a KOYO is a GREAT radiator however is overkill for the pocket book on the setup u are running.. as I offered the csf radiator is almost half the price at 250.00 and comes with a brand new japan made radiator cap. it will flow and cool better then stock (assuming everything else is in working order) but wont look as preaty (csf is black koyo is brushed alum) as a koyo
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Old Mar 28, 2007 | 10:08 AM
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Originally Posted by SpooledupRacing
Like I pm'ed u abotu the stock radiator is not a horrible radiator u have to take all cooling items into effect..

good fan, good stat, good radiator, good coolant if all checks out u will be fine ESPECIALLY for what u have going on..

if u want to upgrade a KOYO is a GREAT radiator however is overkill for the pocket book on the setup u are running.. as I offered the csf radiator is almost half the price at 250.00 and comes with a brand new japan made radiator cap. it will flow and cool better then stock (assuming everything else is in working order) but wont look as preaty (csf is black koyo is brushed alum) as a koyo
a koyo is less than $300 so i dont see why you think its twice your price of $250. its brushed aluminum which looks 10x better. who cares if it comes with a "japan made radiator cap"? you can use the stock one.




sexy!
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Old Mar 28, 2007 | 10:36 AM
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Originally Posted by 87 t-66
its brushed aluminum which looks 10x better.
When it's new and shiny, yes.
I wonder what kind of finish Koyo puts on the alloy?
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Old Mar 28, 2007 | 10:42 AM
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From: Comstock Park, MI 49321
actually u should replace yoru cap when u put in a new radiator...

and the last time I checked the koyo radiators were almost 400.00

and the csf is not aluminum but then again with his setup it dont HAVE to be aluminum because he has no real need for that quality of a radiator... koyo is a high quality unit and not everyone can or wants to drop that kind of cash on one.


btw if u can find a BRAND NEW koyo radiator for under 300.00 shoot me the link cause I have yet to see one for under 300.00
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Old Mar 28, 2007 | 10:46 AM
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http://cgi.ebay.com/ebaymotors/KOYO-...spagenameZWDVW

$305 shipped buy it now OBO. i gurantee you they will come down at least $5 if you shoot them an offer.
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Old Mar 28, 2007 | 11:03 AM
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Originally Posted by clokker
I'd go by price, fitment and looks.
That's contradictory. If it's cheap, it probably doesn't fit and probably looks bad. If it fits perfect and looks good, it's not cheap.

You get what you pay for so don't be cheap. Spend the money, get quality parts, spare others the bitching from cheap parts failing.
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Old Mar 28, 2007 | 11:12 AM
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Originally Posted by 87 t-66
http://cgi.ebay.com/ebaymotors/KOYO-...spagenameZWDVW

$305 shipped buy it now OBO. i gurantee you they will come down at least $5 if you shoot them an offer.
That ain't a bad deal!
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Old Mar 28, 2007 | 11:13 AM
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hey that radiator does not look to fit an fc. the radiator hose ends are on the wrong side

I know I dont want to have to run some custom hoses and custom bracketing.. I personally would be looking for a direct drop in

Last edited by SpooledupRacing; Mar 28, 2007 at 11:20 AM.
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Old Mar 28, 2007 | 11:30 AM
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Everyone, thx for the feedback...

I'm not much of DIY person, I live in an apartment complete that prohibits lessees from working on thier cars, fabricating is not something I'm capable of. So, I'll end up having someone do the R&R for me, regardless of which unit I decide upon.

So, what I'm hearing is.... Koyo's are available at CLOSE to the price of a stock replacement... And, they're a MUCH better unit. After doing a bit of researching, I found the RX7 store carries the Koyo unit for $330. And, its local to me.
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Old Mar 28, 2007 | 01:47 PM
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Ron Davis, Competition crossflow.

Expensive, but worth it for heavy use.
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Old Mar 28, 2007 | 02:17 PM
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Originally Posted by 87 t-66
http://cgi.ebay.com/ebaymotors/KOYO-...spagenameZWDVW

$305 shipped buy it now OBO. i gurantee you they will come down at least $5 if you shoot them an offer.
I just got this in the mail yesterday and it looks great. Quality is good and everything looks to be in the right place. I havent tried to fit it in yet but for whoever wants to know just shoot me a pm in the next couple of days.
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Old Mar 28, 2007 | 02:55 PM
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From: And the horse he rode in on...
http://www.radiatorbarn.com/s7.asp?a...size=R2%2C1.3L

Radiator Barn-In business 47 years.

Great radiator, 160Bux shipped.

I have ordered 3 radiators from them. Great quality and excellent service. They ship from warehouses all over the US. Mine come from Autin, TX and if I order, they arrive the nexd day via UPS.

How can you go wrong with this????

They do aluminum racing radiators as well

http://www.radiatorbarn.com/a7.asp?a...size=R2%2C1.3L
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Old Mar 28, 2007 | 03:52 PM
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Originally Posted by SpooledupRacing
hey that radiator does not look to fit an fc. the radiator hose ends are on the wrong side

I know I dont want to have to run some custom hoses and custom bracketing.. I personally would be looking for a direct drop in
just because the one pictured isnt the one for the fc doesnt mean they arent selling the one for the fc....this is typical with a lot of ebay auctions and stores' websites. the koyo is a direct replacement for the stock radiator
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Old Mar 28, 2007 | 07:37 PM
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From: Mile High
Originally Posted by riverzendz
That's contradictory. If it's cheap...
Not at all.
"Price" does not imply "cheap".
SUR's rads are less expensive than Koyos but that does not automatically make them "cheap" now, does it?
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