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Old 08-21-2004, 08:46 PM   #1
ILwrx
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Default can nitrous deformate the heads or not?

Hello everyone.
I have a 02 wrx with 300whp setup with sr40 and bunch of stuff. running at 1.3bar. After that I installed ZEX wet nitrous kit. it had 55,65,75 shot nozzles. I installed 65 one. Total I used nos maybe like 15 runs. not more. 7-8 sec each run (used it on 2-3-4 gears only.)
It worked fine. Boost jumped to 1.6 sometimes when using nos.

A few days ago I took my engine out to replace it with 2.5 shortblock with forged internals. And I am reusing heads. just porting it.
After taking the heads of i noticed strange things. the head internals bent a little. it is just a litle, 0.2mm. Not a big deal huh? But all the exaust valves were not in place. messed up. We had to rework all the valve seats and valves. adjust them and basiclly fix heads. And this is after 6k miles driving this car!!!!!

Now when we will take the new engine and run it I would like to ask you a queston. What caused this? Because I dont want this to happen again! Some say it was NOS. but 65 shot for 6-7 sec 15 times it not a big deal huh??!! Or it was it? and I need to go down to 55? You see I know people runing 150 shot of NOS on their stock STI and they do burn pistons, break rods, BUT I NEVER HEARD ABOUT THE HEAD DAMAGE. so maybe it was not nitrous that caused this?

Please give me any sugjestions on what i dont need to do to mess up my heads again and what NOS shot i need to use now on.
Maybe it is safer to swich to direct port system? But still I think that 65-75shot levels and 4cyl engine doesnt make big of a difference direct port or not? or I am mistaken?

Thank you
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Old 08-21-2004, 10:21 PM   #2
Uncle Scotty
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I think you had better learn just exactly what you are doing or you will blow it up quick......an 65 shot is like a 120 in YOUR motor....more research, quick...and if ya really wanted a drag car ya bought the wrong one.
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Old 08-21-2004, 10:45 PM   #3
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Can nitrous deformate the heads or not? Hell yes, and it can deform, brake, blow threw just about everything else too.
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Old 08-21-2004, 11:24 PM   #4
DrBiggly
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If you really want to seriously drag this car, you should talk to the guys from ESX. They had a complete drivetrain for sale recently.
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Old 08-22-2004, 04:11 AM   #5
ILwrx
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so? you recomend to use smallest one possible?
why 65 is 120 in my motor?
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Old 08-22-2004, 04:24 AM   #6
humara
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Default wth does deformate mean?

i dont know if a 65 shot of nitrousate can deformate the heads. we should conversate about it. i guess if your heads are deformated, the nos is a good place to start to investigate. i would conjugate some other postulate before the aluminate would deformate again.
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Old 08-22-2004, 05:53 AM   #7
ILwrx
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thatx for answers.
but still - which jet size would you recomend for me to use with this zex wet kit?
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Old 08-22-2004, 06:48 AM   #8
wrx plus
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The problem with your heads is probly not due to the NOS alone, my guess would be that you were using unmodified stock heads and over reving past the mechanical limit of the valve train.
Nos mis-used usually leads to holed or powdered pistons, bent rods, broken cranks, cracked blocks, lifted heads,etc.
Use the smallest jet possible to help spool a larger turbo, an sr40 is purty, but it's a bit small for serious boost. 1.6 bar on an sr40 = some seriously heated air being pushed into the intake.

Kent
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Old 08-22-2004, 10:02 AM   #9
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Quote:
Originally Posted by humara
i dont know if a 65 shot of nitrousate can deformate the heads. we should conversate about it. i guess if your heads are deformated, the nos is a good place to start to investigate. i would conjugate some other postulate before the aluminate would deformate again.

Hallucinate
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Love your mate
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Designate your love as fate
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Or just too late
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Now devastate
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Mediate
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Hallucinate
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Love your mate
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A one world state
As human freight
The number eight
A white black state
A gentle trait
The broken crate

A heavy weight
Or just too late
Like pretty Kate has sex ornate

Now devastate
Appreciate
Depreciate
Fabricate
Emulate
The truth dilate
Special date
The animals we ate
Guilt debate
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The youth irate
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Old 08-22-2004, 10:15 AM   #10
Wraith
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Deformate on my tired
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Old 08-22-2004, 10:18 AM   #11
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Quote:
Originally Posted by Davenow

Hallucinate
Dessegregate
Mediate
Alleviate
Try not to hate

Love your mate
Don't suffocate on your own hate
Designate your love as fate
A one world state
As human freight
The number eight
A white black state
A gentle trait
The broken crate
A heavy weight
Or just too late
Like pretty Kate has sex ornate
Now devastate
Appreciate
Depreciate
Fabricate
Emulate
The truth dilate
Special date
The animal we ate
Guilt debate
The edge serrate
A better rate
The youth irate
Deliberate

Fascinate
Deviate
Reinstate
Liberate
To moderate
Recreate
Or detonate
Annihiliate
Atomic fate

Mediate
Clear the state
Activate
Now radiate
A perfect state
Food on plate
Gravitate
The Earth's own weight
Designate your love as fate
At ninety-eight we all rotate

Hallucinate
Dessegregate
Mediate
Alleviate
Try not to hate

Love your mate
Don't suffocate on your own hate
Designate your love as fate
A one world state
As human freight
The number eight
A white black state
A gentle trait
The broken crate

A heavy weight
Or just too late
Like pretty Kate has sex ornate

Now devastate
Appreciate
Depreciate
Fabricate
Emulate
The truth dilate
Special date
The animals we ate
Guilt debate
The edge serrate
A better rate
The youth irate
Deliberate
Fascinate
Deviate
Reinstate

Liberate
Liberate
Liberate
Liberate

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