block guard
#2
I know nothing about them personally, so I Google'd it. Seemed pretty easy. Maybe you try dis time
http://www.google.com/search?hl=en&b...+it%3F&spell=1
http://www.google.com/search?hl=en&b...+it%3F&spell=1
#3
Block guards go both ways. I know some people who swear by them, more people I know of are against them though. For 400 whp you might want to consider full sleeves before a block guard as you are starting to get pretty high in the hp numbers for the stock sleeves. A tech at work has a da he built, twin turbo, and he is looking to make 350-400 whp when he is done, and he is block guardless and sleeveless.
#5
And how much experience with them do you have? That statement is far fro valid. It CAN hurt your engine. There's such a thing as thermal expansion rate which is different for different metals. The block guard is usually not of the same material as the block and sleeves and expands at a different rate. You can cause many issues there.
#6
Cooling is also another aspect of the block guard that is highly debated as well. You are effectively making the motor a closed deck and even though the guards are drilled they are still restricting coolant.
#7
Last 3 outta 4 motors I built had em never had an issue that same thermal expansion is what moves the cylinders around on hondas blowen head gaskets and such last engine I built went with a dart racing block those r closed deck motors that once again work fine as far as cooling I realize its all 1 type of alloy as opposed to block guards but ive ran these and havent had any issues at all
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tombakers
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