Re: broken pistons and overheating problems with pics
 

hey from my experiences block gaurds are ---- they cause overheating and can contribute to detination cuz the become heat soaked (because all the heat at the top of cylinder) honda engineers desinged this engine as an open deck block you cant change the fundmentals of the engine and not expect any side effects.

Re: broken pistons and overheating problems with pics
 

the block gaurd is not your problem man, i have one in my a6 and it has never over heated, like jeff said it had to be your timing cause obviously that thing was detonating, i dont understand why ever complains about block gaurds, ive had mine in for 6k miles and never had a problem. by the way what rods are you using in your a6 and what clearancing did you have to do? (sorry to come off topic)

Re: broken pistons and overheating problems with pics
 

Wow, this thread was brought back from the dead. I am convinced it is fucked up from my timing. I still don't really understand why it ran fine and my spark plugs looked good. I wish I could have heard the detonation. The sleeve on #4 was cracking as well. Oh well, I'm over it. I've since dropped in a d15b2 with mpfi and am boosting that. Its running great. I also got another a6 to build.

Jordan, I am using eagle rods. I don't know exactly how much clearance i needed. I can take a pic for you. I still have the block. I had the machine shop do it, but you could easily do it yourself with a die grinder. I can try to measure the width of the notch at the bottom of the cylinders. What block guard are you using? I'm still kinda scared to use another one. You have to agree that the top of the cylinders will have better cooling and have a lesser chance of detonation or overheating without a block guard. I'm wondering if the new a6 can take around 240-260 whp without any cylinder bracing?