UPDATES ON BUILD ON PAGE 3.




Hey guys,
After making some good power a few weeks back, 362 whp/336 wtq on bolt ons, the car has low compression in cylinder number 4. The car sounded like it was misfiring at idle. The car was blowing out blue smoke under throttle. I decided to pull the dipstick when the car was idling and it was obvious when you see smoke pulsating out of the dipstick chamber. I pulled the plugs and cylinder number 4 was completely fouled with oil. I then did a compression test and got a reading as follows 115-118-120-77 which confirmed my suspicion all along. Car has 32k miles and most of it was driven hard. The car was launched 5 times and I'm still on stock clutch. Anyways, now comes the rebuild. Here's a few pictures:




Spark Plug Fouled:


It is clear that the motor must be rebuilt. I need some opinions on what are the best rods and pistons to go with for a 4B11? I'm looking to build this 2.0. Where can I get the best prices? As far as turbo goes, I plan on remaining stock turbo. I'm simply looking to get this motor up and running right, and later down the road I will swap the turbo for a stock frame turbo such as the CBRD BBK. The mods I currently have are in my signature. Any advice would be appreciated since this is my first motor build. Also if you have any other advice on items I might want to change during the motor build or parts that are required besides drop in pistons and rods. Thanks for your help.

 

Wiseco Forged 9:1 Pistons
Manley I Beam Connecting Rods or MAP Ultimate Duty X-beam Connecting Rods

 

Somewhat low across the board. Service limit is 95. But if it sounds like it's missing then definitely a bad something. I'm curious to see what kind of damage. How aggressive was the tune?

 

The misfire is because oil is instantly fouling the plug. Borescope the cylinder and make sure it's not something more obvious like a cracked piston. The direction of your build might change slightly if there is no cylinder wall damage.

Good luck.

 

Definitely stop driving it before it gets worse.

I have a MAP 'stage 1.5' motor with stock sleves bored .020 over, MAP Ultimate duty rods, and JE pistons. I have 15k miles on it now, no issues daily driving, I highly recommend this setup.

 

Stay tuned for AJs Evo X build thread. Car will be going under the knife on Sunday.

 

Your piston is cracked and I'm sure you've lost part of the ring land

 

So you were only making more power for a few weeks before it went??

 

This to a "T".

 

who tuned it?

 

read his sig

 

I'll pass by on Sunday bro, support group FTW

 

Did you notice it going lean at all before you discovered the failure? Something that could have caused excessive knock? Test your gas to see if it was a bad batch?

 

I fill up gas at one gas station only. I usually fill up 93 at the Exxon station down the street from my house. The guy knows me well (unfortunately, damn 20 mpg and small gas tank) and I have the receipt. I suppose I should test the gasoline. I did not notice any lean spikes on my AFR gauge. I plan on starting the build today. Car will be ripped apart within a few hours. I will be ordering manley turbo tuff I beams, ACL bearings, Wiseco Pistons, Supertech valve springs and retainers, CBRD BBX Full Ported, ID 1000 cc injectors, Walbro 255 with holder kit to complete my build along with the bolt ons in my sig. Cosworth MX1s will be going on to compliment the smaller stock frame turbo. I'm looking for quick spool, good power, and 11 second quarter mile times

 

I will also need to pick up the Competition Stage 2 clutch kit to hold the torque. My stock clutch doesnt seem like it will last much longer.