Ladies and gents,
I have searched but I am either blind or missed if this has been asked.

I have just upgraded my radiator hoses on my 05 STi to silicon hoses thanks to Mao for the suppy...

I have an STi radiator cap and I am wondering which cap to replace of the 2 standard ones being the radiator itself or the "overflow" cap near the TMIC.

Any help appreciated..

Cheers,

Joe.

Should replace both to 1.3 bar caps.

Why do you want to replace any of them? Your car over heating?

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Car isn't overheating...

Just bling really...

Cheers,

Joe.

I think the top tank cap is rated lower then the radiator one.

Check the KPa values on both caps..

Dont see any bling in a rad cap. Maybe im not hip.

More pressure on head gaskets can cause mint bling though...

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Top tank is 108 kPa..

Radiator is 137 kPa..

I have read that increasing the cap venting pressure raises the boiling point slightly so the theory is that the engine runs cooler. On a 75k stock engine fingers crossed the head gaskets are good.
Could be BS but I am not qualified to comment.

Meh, I'll put it on to replace the radiator cap as this is the closest to the 1.3 Bar rating of the STi cap.
I am the hippest....


Cheers,

Joe.

Any more comments on the above? I've replaced both mine to 1.3 but am open to suggestions.

been running a sti radiator cap for a few years and no problems. subaru sold it to me off my vin, so it must be suited to the car!

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Version 6 STI

go to malz and get them to fit it like a sir, as per > http://www.perth-wrx.com/vb/non-wrx-...anks-malz.html

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my05 STi
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:)