Hardblock Question - Page 2

SSDiv6 · 06-11-2014, 09:12 PM

Although Hard Blok claims the expansion rate of their product is the same as gray cast iron, when I spoke to them, they could not tell me how they based their claim.

On the other hand, Embecco 885 is a fully tested product for use by the government, with lots of supporting data and it contains cast iron in its formulation. Never had any issues with the product and the blocks have never changes in the block dimensions.

randy wilson · 06-12-2014, 07:38 PM

I'm sure there are people who do fine filling their blocks. Just telling of my personal experience. It NEVER settled down for me in any block used. To each his own. We may have actually applied it wrong.

Steve Williams · 06-12-2014, 10:48 PM

I wouldn't fill with hardblock or any aggregrate based filler. I have been using bowling ball epoxy with excellent results. Mix it to the ratio listed on the bottle and it is easier to fill and cleaner overall. Water jackets need to be clean though, no debris or coolant or oil.

06-11-2014, 09:12 PM	#11
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,991 Likes: 693 Liked 1,457 Times in 543 Posts	Re: Hardblock Question Although Hard Blok claims the expansion rate of their product is the same as gray cast iron, when I spoke to them, they could not tell me how they based their claim. On the other hand, Embecco 885 is a fully tested product for use by the government, with lots of supporting data and it contains cast iron in its formulation. Never had any issues with the product and the blocks have never changes in the block dimensions.

06-12-2014, 07:38 PM	#12
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 20 Times in 20 Posts	Re: Hardblock Question I'm sure there are people who do fine filling their blocks. Just telling of my personal experience. It NEVER settled down for me in any block used. To each his own. We may have actually applied it wrong. __________________ don,t have one

06-12-2014, 10:48 PM	#13
Steve Williams Member Join Date: Aug 2007 Location: Detroit, Michigan Posts: 352 Likes: 0 Liked 1 Time in 1 Post	Re: Hardblock Question I wouldn't fill with hardblock or any aggregrate based filler. I have been using bowling ball epoxy with excellent results. Mix it to the ratio listed on the bottle and it is easier to fill and cleaner overall. Water jackets need to be clean though, no debris or coolant or oil.