pictures of 12v intercooled piston compared to nonintercooled piston

so how thick is the crown on the edge of the bowls on 96 style vs the non intercooled style?
2 of the pistons in my motor have really small cracks coming out from the center.. only one small crack in each but im thinking that i already have it apart so why not fix it right.. again..
 
Bponci said:
New factory mahle pistons just released a very short time ago.
2011-10-06_20-54-07_381.jpg

2011-10-06_20-53-31_809.jpg
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I have these coming!!!!
 
DEZLFREK said:
2 of the pistons in my motor have really small cracks coming out from the center.. only one small crack in each but im thinking that i already have it apart so why not fix it right.. again..
Click to expand...

There is one drawback to running a wide cone angle injector with a small bowl. Any way about it, a wider bowl is always better for power. The piston Brad posted pic of is a moly coated skirt and fly cut 286050, nice bowl design, but I'd like to see something a bit different.
 
yes that is what i assume the downfall is of this kind of combo. it seems like the small crack developed on the edge of the spray pattern and i assume from the temperature difference. the problem i have with the pistons brad is using is the low compression of 14-1, this is why i would like to run a industrial or non ic piston i think. the other option is to us my marine pistons then cut the block and pistons down to get the compression back up.
 
DEZLFREK said:
yes that is what i assume the downfall is of this kind of combo. it seems like the small crack developed on the edge of the spray pattern and i assume from the temperature difference. the problem i have with the pistons brad is using is the low compression of 14-1, this is why i would like to run a industrial or non ic piston i think. the other option is to us my marine pistons then cut the block and pistons down to get the compression back up.
Click to expand...

you can get it 15-1 also
 
hey devon lock since you dont have yo pay for this pistons ,can i have a few sets?
 
so thats with the reliefs also devon? do you have that part number?
 
Lucky Jeff said:
10 mm from the top of the ring to the crown on my 98 piston.

I'm still trying to decide on whether I should keep my stock piston or go for an aluminum one with a larger bowl. I'm not really after big power, just an efficient/smooth motor.
Click to expand...

10mm on my 98 pistons also.

I ended up going with the 286210. I haven't been able to drive it much yet. Can't wait to start tuning.
 
DEZLFREK said:
the problem i have with the pistons brad is using is the low compression of 14-1, this is why i would like to run a industrial or non ic piston i think.
Click to expand...

That's what I'd like to see different, shallower bowl and a lower bowl cc to start with to keep compression up a touch.
 
so in your opinion how safe is it to cut the block down and the outsides of the tops of the pistons?
 
As in deck the block and taper the piston above the top ring land?
 
yes, to basically raise the compression with a shallower bowl while keeping piston protrusion from being an issue
 
It's common to taper the top of the pistons that are not inset above the top ring land. Also decking the block will add protrusion and raise compression, but valve clearance will decrease. You can pocket for valves or mill the top down to compensate for the loss of clearance. Some might even take a 286110 piston and knock 6mm off the top...
 
ya thats what i meant is to mill the tops of the pistons down to match how much you take off the deck of the block. i already have to cut valve reliefs so that would just have to compesate for the same.
i guess my question is will that hurt the pistons integraty? the thing is i already have a set of marine pistons sitting here but i dont like the idea of loosing the compression. this is an open question for anyone that knows if it would be ok for the long term higher hp street motor.
 
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