So my '03 Evo just turned 120,000 miles yesterday. My friend with basically the same mods as me blew his Evo up about a month and half ago with only having 102,000. I have had the mods on my car for about 3 to 4 months now with no issues yet. (Knock on wood!!) Needless to say I am getting scared about mine blowin up as his did. I am thinking of doing a rebuild to freshen up the bottom end ie. main & rod bearings and new rings. Is this a good idea or should I look into rods/pistons. The car is my DD so I dont want to compremise drivability. Also note I dont plan on going over the stock XI turbo or maybe a FP Red! Also is there a company that makes rods for the stock pistons? My rods are my only concern with 120,000 miles on them now. Thanks

 

You can do a full rebuild because at that mileage most people don't recommend just drop ins. With the availability of the SBR 2.4 , It may be worth it to just drive it until it blows and worry then.

 

Impressive. The 4G63 motors can take quite a bit of power and last.

 

pretty crappy advice IMO

1. read reveiws..I wouldn't let slowboy work on my lawn mower
2. don't just let it blow and go from there, because now your oil cooler is junk..possible damage to the head and so on

 

Why did your buddy's evo blow up is the bigger question. Just because his blew doesn't mean yours will too. Too many variables to just say make that assumption.

There are more then a few 200+ evo's with mods on this site that are running fine still.

More info please.

 

I wouldn't worry, just watch you knocks on e85. I have seen rods bend due to knock on E85

 

140,5xx and still going strong... Maintenance and the tune are key!!! I put about 10k miles on it in less than 6months due to the fact that I knew I was leaving for deployment...

 

125k on my 35r car still running strong as ever working on tweaking V7 tuning now. Run pump gas though no E85 here

 

As long as you have kept up on maintenance I wouldn't worry about it. You don't really know how you friend drove and took care of his car so comparing the two won't do you any good imo. If you are wanting to be cautious the do some tests, compression, fuel pressure, boost leak, leak down, etc. 4G63's are very strong when taken care of, good luck.

 

Just keep that engine healthy. Do the recommended maintenance with quality goods and you should survive.

 

I dont wanna just let it blow up thats for sure! My friend that blew his up hasnt got the old engine out to determine what happened. However we did take the head off and piston #2 is missing with pieces scattered all over the engine bay. We looked at what was left of the rod and seems to have broken in the middle. The upper half of the rod is laying in the bottom of the engine along with the wrist pin from what I saw. The night before he blew it up he had it tuned on on E85 by the same guy, Adam Blevins, that tunes all the Evos in this area. The car DLL'ed like 400whp and prior to that it was tuned on pump gas with the stock VIII turbo and only made like 280whp. Also he said that it was 5,000RPM in 3rd gear when it let go.

 

So the night after he got the tune it blew up?

 

I have 114K on my ride with a Vishnu Stage 1+ kit on it since 15K!! Its running strong and holding together. Like someone else said, maintenance is key.

 

The next day it blew up.

 

It better not blow up this time though cause it's getting the works before it goes back together. Keep in mind I had only owned the car for 2 1/2 months before it went BOOM. Apparently the guy who owned before me ran it rich it's whole life and was about to go anyways.