how do you guys feel about those block gaurds taht fits in between the cylinder walls and block? it it worth the effort putting it in. i remember a few years ago when those were the talk but why are they dissapearing and making ways for full resleeve combination gaurds thingy? i notice only entry level manufactures (such as apc) are the only ones offering them anymore. i could be wrong.

 

The reason full resleeve's are popular is because people are going with huge over bore piston sizes. If you bore your engine that much, the walls are too thin to be safe. People just pull out the sleeves and resleeve them for more strength.

Block gaurds are still great if you want to keep your piston size about the same specs as stock. On my B18b, Im running .25mm oversize JDM ITR pistons. Since I didnt bore the walls very much, I can just use a block guard for extra protection.

 

Search for block gaurds. This has been argued about a bunch of times and this will prolly lead to another. I use one in my GS-R and have no problems and see it as nnothing more than cheap insurance.

 

thats what i thought. basically you hammer it into the coolant grove until it's flush - and how accurate is that in keeping the cylinders straight and true.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sinister357 &raquo;</TD></TR><TR><TD CLASS="quote">thats what i thought. basically you hammer it into the coolant grove until it's flush - and how accurate is that in keeping the cylinders straight and true.</TD></TR></TABLE>

The correct way is to have it machined to fit perfectly. Also, it's supposed to reinforce and fill the water jacket, not keep the cylinders straight and true.

 

Someone correct me if im wrong but i thought block guards were to slow down the flow of water so it can stay in the radiator longer to cool off.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JdM DA InTeGrA &raquo;</TD></TR><TR><TD CLASS="quote">Someone correct me if im wrong but i thought block guards were to slow down the flow of water so it can stay in the radiator longer to cool off.</TD></TR></TABLE>

No, the block guard is to reinforce the open channal between the block and the cylinder walls. This is a weak point on Honda engines, in high h.p applications the walls can flex and crack. The block gaurd is a sort of brace that supports the cylinder walls and keeps them from flexing.

 

I thought that the block guard is used to keep the cylinders steady. They can and will still crack if you go much over what the factory sleeves can handle. I 'm under the impression that the guard is there to hold the cylinders so they don't shake or sway and crack the bottoms of each cylinder. It has been thought that the downfall of the block guard is that it obstructs the flow of the coolant and forms "hot spots" on the cylinders.