Quick history of the current block, EVO 8MR motor One stock piston melted so the block got a rebuilt with a new sleeve/bore in the damage cylinder.

Equipped now with JE 9.5:1 pistons 85.5mm, Manley turbo tuff rods, stock crank, stock head, APR head stud E85 fuel, 23psi BBk Full

Cut long story short, headgasket been changed twice since rebuild. From last headgasket remove and replace, Mechanic have advised cylinder 3 seems to have too much piston/wall clearence, which explains the excessive blow by.

Now under my ownership, i have since fix the tune (which i think cause most of the engine problems). Now i want to fix the motor due to this loose cylidner 3 where i can hear piston slapping. Under heavy and light load the engine light sometime flickers sometimes it doesnt. Tuning wise very conservative, but cel light still appears every now and then.

So question is, what would you do to the block?

I Was thinking of going 86mm bore 10:1 comp, reuse the Manley turbo tuff rods get the whole rotating asembly balance, new rod/main bearings.

Budget is somewhat limited, so dont get too adventurous.

Current power output ~260kw (~350hp) atw.

 

Since your budget is limited, I would just drive the car....If you plan on rebuilding, then you'll likely be looking at machining the block, new pistons, and bearings at the very least...Labor is what will be expensive, but I am guessing you could get it all done for less than $2500.

 

Good advice, If your going to tear down a motor might as well do it right!

 

I said budget is limited, but i didnt mean it was tight. Looking to spend around 1500-2000.

I can do most of the labour i.e pull motor out, strip and reassemble.

Would 86mm 10:1 comp standard rod lenght be a good idea? safe for around 300-320kw atw (400-420hp).