i have a h23 block that has been overdecked, and the pistons barely stick out of the block.. i sent it over to a shop and he said he fixed the problem by doing something with the head. i think he said he decked and milled it.. so, i dont get it. hows that helping it? i'm using a stock gasket, and it still does crank over. pistons are 8:5 arias pistons, and i'm guessing it's not like hella higher. am i in trouble? should i even run the motor? any suggestions would help. thanks

 

How would taking more material off help? unless the head was warped..... get a cometic HG, if thats not enough, put 2 copper ones on either side.........

 

exactly what i was thinking.. how would taking more off the head help.. but thas what the shop guy said. and he's been working on motors for 15 years or some **** like that.. i asked if i should use a bigger/thicker gasket, and he said no HONDA's are the best.

 

Does he mean that he milled the block or head? If its the block then milling will increase the compression resulting in more HP gains and the pistons will be closer to the top of the deck.

 

http://www.c-speedracing.com/h...y.php


find out how much he decked/milled and we can calulate the compression ratio.

 

clay the motor , if it comes out no good get the pistons milled and run a stock head gasket and get cam gears to get your cam timing back in line right

 

both block and head has been decked/milled.. thas why the pistons were sticking out of the block..thus is why i asked, how is milling down the head fixing the problem that the pistons are sticking out. and it's a bad idea to shave down the pistons..

i was thinking bout claying it, but way to lazy to put the head on and taking it off and putting it back on.. but i just took this guys word for it, that it's fine now.. or should i? this is the guy that built it, http://www.terrytinney.com

 

anyone?

 

here's what he emailed me
"You could shorten the connecting rods or cut the tops of the pistons or
use a thicker headgasket, but if theyre not hitting the head you should leave them that way. Shortening the rods wouldn't be a bad idea if they needed to be, but you
have to measure everything, like the head gasket, the amount the pistons
are sticking up.... how much clearance is there between the top of the
piston and the head?"

what do you think? good or bad idea? or what should be my best bet?

 

My pistons were coming out of my block, etc. and there was a small amount of piston-to-head contact (just enough to cause too much concern - especially knowing that the block had to be decked again). The head and block were decked 4+ times each (in their lifetime) and the differential was taken care of with a thick Cometic gasket. Measure how far the pistons protrude from the block, then add the approximate thickness of the stock headgasket.

 

i was thinking to just get the thickest cometic head gasket and that'll solve the prob. think that should be reliable enough?

 

In my experience a thick Cometic gasket will work as good as the OEM gasket...so it should do the trick for you.

 

thanks man, your awesome!

 

told you 2 days ago......... cometic is the ****, i know from experience with turbo bikes etc..... have yet to blow one

 

kewl man thanks