trying to get to 200 whp daily driven b18c1 do i really need it meaning the block guard going to be running 11.8 cr std wiseco pistons

 

are you talking bout the thing that bolts to the bottome end or the thing that gets hammered in between the cylinders and the block

 

The hammered in thing is the block guard.

No, you don't NEED it - but its cheap and its proven to work.

No hotspots like everyone else says.....get a good one with coolant passages.

 

No. Do not need them and I don't use them. 220 whp daily driver and 250 whp drag car.

 

thanks i was doing lots of reading on it stated was that it puts more stress on the sleeves etc so not block guard for me still would like to know wa other people think experiences good or bad

 

all motor...not that u cant use it..
turbo application...i would use it if ur not sleeving the block...but thats a whole other story

 

would there be any exception for a stock sleeved B20 with 12.x:1cr?? or still no need for the guard?

 

For that I would get it, I hear high CR and stock B20 sleeves might be a bad combo. I have 11:1 on my B20 and I have a block guard, it doesn't hurt to do it and they are fairly cheap.

 

In retrospect I probably would have put one in. The problem with putting it in AFTER your motor is built, is that since its a press fit between the sleeves and the block it could shift the sleeves a tiny amount, thus compromising ring seal. It seems logical--but I have no proof that it actually does this. Anyone else want to chime in?

 

don;t need it on the stock sleeved b18a/b/c, b16a/b, b17a ... I would recommend it on the b20a/b with very high compression (around 12:1 and up) ...

its just added protection. It does not shift sleeves.