Looking though my various Corvette supplier magazines I don't see any heat risers for sale? Where do you buy these?
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Re: Heat risers
Gary-----
They're real easy to find. Suppliers like Dr. Rebuild and Paragon both carry them, for sure. I'd bet that most of the other Corvette suppliers do, too. Most auto parts stores can sell you a heat riser for most applications. Also, most (but not all) Corvette heat riser valves are still available from GM. So, obtaining a heat riser valve for your application should be amongt the easiest of your parts acquisition problems.
There are some exceptions, though. 55-56 heat risers are more difficult to find. Also, some of the later C3 heat risers may be configured differently and/or more difficult to find than most others. 1957 through about 1974 are very easy to come up with.In Appreciation of John Hinckley -
Re: Heat risers
TY..Joe The effects on an engine with a froazen heat riser in the closed position would be?Comment
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Re: Heat risers
1. Exhaust sounds funny.
2. No power.
3. No exhaust gas exiting the right tailpipe.Comment
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Re: Heat risers
Additional potential problems:
Spark knock
Fuel percolation
Lean misfireComment
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Re: Heat risers
if you have one that is stuck, try spraying it with a high heat penetrating oil. to free it up.Comment
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Re: Heat risers
Gary------
In addition to the symptoms described by others, a stuck heat riser is very easy to confirm----just check the position of the counterweight. While it may be possible to free up stuck heat riser valves, if the valve is old, the best solution is a replacement. That's because even if you free it up, it will likely stick again before too long. No sense battling this problem on a continuing basis.In Appreciation of John HinckleyComment
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Re: Heat risers
Oh,
that is not all ways the case that it will stick again! I would try and free it up first, lot of work to change it out.Comment
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GM sells a heat riser lubricant. *NM*
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Re: GM sells a heat riser lubricant.
yeah,
that is what I use. real good stuff a little goes along way.Comment
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