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986 Bleed Valve -- Do They All Have Them Or Just Certain Years?


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I've got a 97 engine I am swapping into a 99 car.

The 97 engine has a different oil cooler that does not have the top mounted tube for the line that

goes to the Bleed valve. Are there some years that do not have this valve?

Did it used to connect to someplace else?

thanks,

mike

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The earliest cars had a slightly different oil cooler that also required an adaptor plate between the cooler and the block as well as not having the upper line........

So no bleed system in the earliest 986's -- or did they do it a different way.

Just trying to see if I need to T a line someplace to still maintain the function.

BTW, I'll need to double check tonite -- but the new coolers do not look like the will fit in the old blocks. in this case a 99 cooler (with bleed line) in a 97 block.

Mike

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The earliest cars had a slightly different oil cooler that also required an adaptor plate between the cooler and the block as well as not having the upper line........

So no bleed system in the earliest 986's -- or did they do it a different way.

Just trying to see if I need to T a line someplace to still maintain the function.

BTW, I'll need to double check tonite -- but the new coolers do not look like the will fit in the old blocks. in this case a 99 cooler (with bleed line) in a 97 block.

Mike

I'm not really sure on that one Mike; the 2.5 didn't survive in production very long, but I know they had a different cooler setup (with an adaptor plate between the cooler and the block), but cannot honestly say how it was otherwise "plumbed". I've only ever seen two of them, and that was some time ago. Perhaps if you give Jeff over at Sunset a buzz (or Jake Raby), they might have more complete info (I looked in my set of the OEM service manuals, but nothing is mentioned in the version I have).

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