I am definitely sending out the injectors at this point. I really hope I find there is a bad one or two. It will really put my mind at ease as to why I've had so many problems with the motor.

I am very frustrated at this point. I have put a lot of hard-earned money into the car, used the best parts, cut no corners, and a lot of wrenching. I just hope the injectors come up as being bad. At this point, I have to spend more money and I can't do anything about that - just would like to know that swapping the injectors and getting retuned fixes the problem and don't have to worry so much.

I know given the car is modified I can't expect the car to be 100% reliable, but I don't think I should have problems this regularly. Do most of you guys over 400whp have relatively reliable Evos?

 

Again, how do you have your cam gears set up on this motor?

 

Im not to familar with the 2.1 shortblocks but i can tell you this. I snapped my kelford intake cam a while back and bent all 16 valves. The cam snapped because the ****ty BRO tune i had in the car. Motor went into a complete melt down and one of the pistons actually locked up in the cylinder and all that torque just sheered the cam in half. Anyways blowing coolant every where and popping freeze plugs means the head a lifting under boost from detonation. Call Raif, let him take a look at the car and get it straightened out for you.

 

Factory cam gears retarded 1/2 a tooth on both gears - per Buschur.

 

Lots of people have fine luck at much higher hp. I daily drive my car at 620whp on pump gas with no issues like this. Its the name of the game though, some times you have to go through some bad luck before getting to your end result that you want. Sorry to hear about the bad luck.

 

Yep, uh huh, OK, please don't ask my opinion again.

 

It might be me but, running injectors at 90-95% is a bad idea. Any drop in fuel pressure and the injectors are not going to be able to flow anymore fuel. That compression test isn't the prettiest numbers I have seen, you might have an issue with cylinder 4. Obviously I am no expert but before I would go any further I would ask for a third party shop like BR, Stm, or AMS about those numbers. There is no point dumping more money into bandaids if the motor is down a cylinder. Just my .02 c

 

What was AFR were you seeing? Thats sucks man

 

That really sucks man. Thats a lot of repeated carnage on your car. Let us know if there is anything we can do to help if you need it. I'm curious to see how balanced the injectors are too.

-Jamie

 

Dude sorry to tell you "the shop" is garbage! I would nottt be surprise like david buschur said and others if the tune keeps ***kin ur car up. I had first hand experience with them and will never recommend them to anybody to go to again bunch of thieves. Also have have a few friends that blew there motors after getting tuned/ built my them. I would def look elsewhere for a tune though they are far from " the best" in the tristate area many other reputable people out there
.Anyways goodluck man i hope you get it resolved. I would not be very much surprised if this is 95% your problem

 

What does a bad tune has to do with a freeze plug coming undone? Just a question.

 

My apologies David. I was in no way trying to undermine your knowledge. I am just very frustrated with the car right now. The money I have put into it hasn't been a walk in the park for me.

The head wasn't sealing properly and the headgasket leaking was pressurizing the cooling system with exhaust. Way too much pressure for cooling system.

 

Freeze plugs dont just pop out, they get pushed out--under pressure and a lot of it. That isnt the norm for a health motor under any circumstance.. Just a thought.

 

This sounds like what happened to Mellon's car.

 

Ignition timing from a garbage tune is likely burning through the hgasket and or lifting the head. Your valve springs sound like they are too stiff and have broken the cam. Let me guess, dual springs on a street car? How are you claiming to retard a STOCK camgear? They are NON ADJUSTIBLE!