Better then stock rebuild

[mario_82_ZXT]

My friend toasted his l28et running 19psi on a pretty big T4 turbo.

 

We were wondering if anyone has done a bored out motor using the following components:

 

1. N42 block

2. P90 head

3. L24 big rods

4. KA24E cast pistons

5. Nissan head gasket

 

According to AtlanticZ's tech tips that should yield about 7.7:1 CR.

 

The thing that worries me the most the -1.37mm deck height and the cast KA24E pistons, but according to the interwebs stock internal KAs have hit >400hp.

 

Anyone see any red flags with this setup? Is this a no go? Sorry I'm a complete newb when it comes to internals.

[BluDestiny]

Why wouldn't you just get forged KA pistons? buy 3 sets (=12 pistons) and sell the other 6 as a pair. If you have the money of course.

 

Also you're building up your lower end for reliability. I would do it once right.

[z-ya]

What got "toasted"?

 

If you are doing a budget build, just use stock L28 rods, crank, and only bore if you need to. Chances are, there is nothing wrong with the bores. If the pistons have detonation damage get a set of aftermarket L28ET pistons. If you need to bore, you can get +.5 and +1mm over sizes.

 

Also, when you bore to 89mm, you can't use the stock head gasket. You have also taken away a lot of metal which in a turbo applcation is not good. You want the block to be as rigid as possible.

 

Pete