Id like to know if those block guards that some people are running actually create hot spots?

I have heard lots of talk about the block guard helping stabilize Siamese piston configuration from deflection, but i have hypothesized on my own is this really a good idea? of course u want to minimize deflection. which is why honda adds girdles on low and top ends of the motors for all that rpm. (-other then cost- why wouldn't they do it at an engineering level?) we all know that Siamese setup is garbage but what about expansion rates? of different grades of metals ? i am not a metal metal urge guy but i know it would different.

now from one water jacket side (piston side) - to the opposing side of the blocks water jacket (block side) would lye the Block guard, would the mating surfaces (on both sides) create hot spots? has any one visually seen hot spots like visually? or does it just cool normally and not create enough heat that it wouldn't create the hot spot?? which would be hard to believe?? knowing they sell on Nitrous, supercharging, turbo charging motors. Especially that turbo junk.

the block guard has to create restriction to head and drop water pressure for every day usage. as oil filters that do more microns would drop in pressure same concept as they would have to get by smaller orifices.

I am asking on a daily driver basis for all you people that are going to say it doesn't matter because your constantly rebuilding every 8 second passes (lol./jk)

Pro people that understand and have actually noticed anything id love to know guys! really please share block guard peeps

 

i had a stock sleeve ls with a block guard hold over 600whp... iput about 500 extremely hard miles on the motor and then changed the headgasket. everything looked fine when i changed it.. no noticable spots... car never overheated til i lifted the head from boost.

 

I'm no expert but it would seem like the points that touch the cylinders would stay warmer than those that don't. The cylinders transfer heat to the guard, which then conducts it back....you should PM ... Combustion Contraption ...

 

theres a DIY homemade blockguard thing in the FAQ of the CRXs...im not sure if theres any info that u would want in there but it does pertain to a blockguard. :D

 

i've used them to make over 500whp in an ls vtec. my personal thought is that you can still make that power on stock sleeves without the guard. it's only benefit is that it save the sleeves from walking under high amounts of boost. as for the sleeve itself, if it's gonna crack it's gonna crack. so my honest opinion about them from using them first hand is that they are a waste of the dollar bills it costs to buy one. put the money elsewhere cuz a stock sleeve will still take up to 500 or so whp in a b series (not the b20 though)

 

wow you're the first person i've ever seen say that... my stock sleeve ls made 632 and still to this day runs in another car making 450ish...

 

and that is why i find them useless. just spend the money and have your **** sleeved if you wanna go more than 500-600 whp... that's my opinion. when building a setup that you wanna push the limits of engine internals, just spend the money on sleeves, or you're gonna be spending the money tearing down your block and rebuilding it after it fails eventually anyways.