1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

S1 L67 heater core piping

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Old 03-14-2006, 07:01 PM
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Default S1 L67 heater core piping

I have my LIM out. Piped off the passenger side of the manifold is the heater core pipe. How is that pipe held in? Mine was only held in with blue RTV. I seem to think there should be more than RTV holding it in. If so, what is it? An o-ring?
Old 03-14-2006, 07:19 PM
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Default Re: S1 L67 heater core piping

Originally Posted by vital49
I have my LIM out. Piped off the passenger side of the manifold is the heater core pipe. How is that pipe held in? Mine was only held in with blue RTV. I seem to think there should be more than RTV holding it in. If so, what is it? An o-ring?
Are you referring to the end that goes into the block? If so, that end has o-rings on my 95.
Old 03-14-2006, 10:03 PM
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Default

I figured it out. The o-ring was so flattened that it literally was smooth to the touch.

I have an o-ring kit and I used one from the kit as a replacement. Fits like a glove now!
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