This is to be expected and is very simple. With the super high boost on regular pump gas you were getting hardcore preignition and detonation. The ECU pulled timing to compensate, thus lower performance. I'm glad you are getting a whole new head. If I did that to my car I wouldn't be able to trust a single valve afterwards. I'd have to rebuild the head using new parts anyway just for piece of mind. Never mind the cost of taking everything to a machine shop to be sure that everything was up to spec.

Be sure to check that the top of that engine block is within allowable tolerances before you put the new head on! It’s quite possible for it to have warped at the cylinder/s where the gasket was damaged.

 

guys, i am moving this to the dynoflash forums because i feel that Al should be able to respond because it is his customer.

however, if this thread will go to the route of flames it will shut down.

 

Hey gang !

Remember what we advised last spring

ARP head studs

ANYONE making over 315 whp should upgrade the head studs - its a no brainer

The stock head studs are STRECH bolts

They will fail over time if you make big power

When you start making big power - you should look at the ARP bolts - its cheap insurance

In this guy's case - he was over boosting apparently due to a faulty boost gague and may have lifted the head by streching the weak stock head bolts

The Vishnu camp is trying to allude to some issue with my tuning - BUT - out of the 600 plus Evos with Dyno Flash there have been only 2 head gasket problems from the best of my info. Both those cars made big power.

Apparently this guy dynoed at one point with 360 ft lbs to the wheels which is a hefty number. If your car is making decent power invest in the ARP stud kit.

Finally - we don't EVEN KNOW YET IF he has a head gasket problem or not. When his head comes off THEN we can talk about it. Untill then its pure speculation.

Get the ARP bolts - cheap insurance

 

My base head set up is $1,400 with a good core - gets you a very top valve job, deck, stage 3 port job and dress up the combustion area and re-assemble with new seals. For the same price you can get it with the ferrea 1mm oversized valves, springs and retainers (those parts extra) and have the same exact head I use on my 11.21 sec evo

Its not the cheapest set up - BUT - I went through 5 heads to get a set up that made the kind of power and trq gains I wanted while keeping a decent idel and lasting a long time

I have 9,000 miles on mine

 

...I got it!!

Take it ez on the poor guy, he just blew his head.

 

hey guys, thanks for giving them the info, and yes i willb e reflahshing the car when im done, im also finisishing up the Buschur stage 4 at the same time, so its gonna be an 11 secmachine i hope with the addition of the new clutch last week and the new parts,w e will have to see, thanks Al...

 

No nothing like that Shiv clearly stated what the problem is (head gasket) and because it was under high boost. Nothing was said about your tuning. evo8power stated in his first post that he was boosting 28psi for three weeks before he noticed that with the new gauge.

Evo8power I'm sorry to hear that. What gauge were you using??? (mis-reading one)

Eric

 

Dynoflash vs Vishnu related posts deleted from above. Text edited below. SC~

As for Robi's car - it was well documented that his car broke due to fuel starvation going around corners very hard with almost an empty tank and had nothing to do with tuning

His car lasted a very long time under a lot of very hard abuse



We recomend ARP head studs

We also recomend 20.5 psi on pump gas

We do not recomend 27 psi

 

The smell of an engine burning coolant is very distinct. If the other guy was really smelling coolant in your exhaust, the head gasket is probably toast.

 

recieved a call from my customer here and some good news - or bad news

His head gasket was fine - perfect - his engine mint

BUT - his meachnic that did his clutch job messed up and had his tranmission cocked and leaking onto the exhiast and his fmic coupling was damaged and leaking - along with his starter somehow not fully bolted in (if you could imagine that)

Anyway good news is no head gasket problems

Bad news is bad clutch install and lots of head aches

 

This is exactly why I never let anyone work on my car but me. That includes Mitsu's mechanics.

 

Its hard though when you dont have a lift or proper equipment to do the clutch

Whar irks me about this situation is when you have internet pontificators and detractors who are afiliated with other tuning houses using this situation to insinuate bad things about my tuning - and now we see that tuning had nothing to do with it and that the guy's engine is 100% perfect even though he over boosted
What even irks me more is when those other tuners come on here to use some guy's misfortune to try and promote their business

 

So where did the white smoke come from then? He had to be burning something. That something had to be leaking from the cooling system or the oil system...there is no other way to get liquid into the exhaust.....unless the smoke was from an external leak that was dripping onto something hot.

SC~

 

he said that the center tranfser case and trans were not properly aligned so there was a leak of trans fluid / gear oil on to the down pipe

 

i know it was you al, your tune must have jarred lose the tranny. and then you secrety planted tranny oil on the DP didn't you!

JK man, i'll call you sometime about finishing up my car..

good thing it wasn't the thing that people feared, but Al, i think no matter what you do, others will critisize your work, as they must go against what they fear.