How to determine radiator mfg?

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DesignGuy - 19 Jul 2005 18:52 GMT

I've got a 1995 Civic LX, and have had the radiator replaced at a garage due
to overheating. I want to replace the radiator cap (also replaced around the
same time with a non-OEM cap) to an OEM cap as recommended in this
newsgroup.

A call to the Honda dealer find that there are two different caps, depending
on the manufacturer of the radiator (Toyo or Denzo).

Problem is, I can't find any identification on the aftermarket radiator to
identify which one it is.

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TeGGeR® - 20 Jul 2005 00:17 GMT

> I've got a 1995 Civic LX, and have had the radiator replaced at a
> garage due to overheating. I want to replace the radiator cap (also
[quoted text clipped - 3 lines]
> A call to the Honda dealer find that there are two different caps,
> depending on the manufacturer of the radiator (Toyo or Denzo).

Did the dealer tell you what differences there are between Toyo and Denso
rad caps? They'rs all made by ND as far as I know.

> Problem is, I can't find any identification on the aftermarket
> radiator to identify which one it is.

If you've got an aftermarket rad (as I do), then the manufacturer of your
original rad is irrelevant.

The outside diameter of the cap should tell you what you need. Mine
measures 1-3/4" across.

And your rating is 0.9 bar, or 13 lbs.

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TeGGeR®

The Unofficial Honda/Acura FAQ
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DesignGuy - 20 Jul 2005 00:59 GMT

> > I've got a 1995 Civic LX, and have had the radiator replaced at a
> > garage due to overheating. I want to replace the radiator cap (also
[quoted text clipped - 17 lines]
>
> And your rating is 0.9 bar, or 13 lbs.

The dealer didn't specify the difference. Also, my after-market rad cap has
1.1 printed on it (1.1 bar?), so perhaps I'm using the wrong cap after all.

I'll take the car to the dealer tomorrow and see about getting an OEM cap.

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jim beam - 20 Jul 2005 02:19 GMT

>>>I've got a 1995 Civic LX, and have had the radiator replaced at a
>>>garage due to overheating. I want to replace the radiator cap (also
[quoted text clipped - 22 lines]
>
> I'll take the car to the dealer tomorrow and see about getting an OEM cap.

1.1bar will keep the lid on overheating better than 0.9bar will.

check [replace] your thermostat - need to replace the rubber gasket it
sits in at the same time - and see how you go. after that, check for
head gasket, leaks, blockages, etc.

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TeGGeR® - 20 Jul 2005 02:46 GMT

>> The dealer didn't specify the difference. Also, my after-market rad
>> cap has 1.1 printed on it (1.1 bar?), so perhaps I'm using the wrong
[quoted text clipped - 4 lines]
>
> 1.1bar will keep the lid on overheating better than 0.9bar will.

The '95 Civic should be using a 1.1 bar cap.

Modern caps don't even begin to hold pressure until the fluid starts to
boil anyway.

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TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

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jim beam - 20 Jul 2005 02:59 GMT

>>>The dealer didn't specify the difference. Also, my after-market rad
>>>cap has 1.1 printed on it (1.1 bar?), so perhaps I'm using the wrong
[quoted text clipped - 9 lines]
> Modern caps don't even begin to hold pressure until the fluid starts to
> boil anyway.

http://www.biggreenegg.com/boilingPoint.htm

the cap ensures you keep your coolant liquid even when you're up in the
mountains.

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TeGGeR® - 20 Jul 2005 03:07 GMT

jim beam <nospam@example.net> wrote in news:RJWdndOy5oeALUDfRVn-
pA@speakeasy.net:

>> Modern caps don't even begin to hold pressure until the fluid starts to
>> boil anyway.
[quoted text clipped - 3 lines]
> the cap ensures you keep your coolant liquid even when you're up in the
> mountains.

Yes, but the cap does not hold pressure UNTIL the fluid boils, regardless
of what the boiling temperature is. That's why you have that jiggly dangly
thing (get your mind out of the gutter) on the bottom of the cap.

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TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

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