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No it is not significantly. 140-160 1974

posted by  Rule 308 on  Thu May 19 18:41 CST 2005
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last visit: Tue May 8 09:20 CST 2012
[RELATED]

The so called flat freeze plugs work great if they are installed properly. I would just go back through and give the existing ones a good whack. There is not enough of a lip to use the domestic style cupped ones.

When I was a young dumb ass Volvo trainnie technician I took my 74 140 up to the high desert for New Year's and it got down to 17 degrees and all I had in the system was water! You guessed it, it pushed half of those freeze plugs out. I had to thaw the car, pull the manifolds right there on the dry lake bed and pound the whole thing back together. The freeze plugs held just fine but I don't think it liked being frozen as about 9-10 months later it threw a rod right threw the side of the block while doing 4,000 RPM+.

Mark






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