STI Forum  |  Shop  |  Sponsors  |  Advertise Rules  |  FAQ  |  Members List  |  Calendar
IWSTI.com: Subaru STI Forums
 
Home  |  Register  |  Today's Posts  |  Go Premium Mark Forums Read Create a Member Journal  |  Vendor Deals  |  Member Classifieds

New IWSTI license plate promotion!PLEASE VOTE/RESPOND TO THIS THREAD!Special Order 2008+ IWSTI Gear!

Welcome to IWSTI.com, the largest STI specific forum on the internet, where you can interact with other STI enthusiasts, create a member journal, and receive answers to your questions. Registration is fast, simple and absolutely free, so please register today to start enjoying IWSTI membership privileges! Problem registering? Please contact support.
Go Back   IWSTI.com: Subaru STI Forums > STi Technical Discussion > Engine, Power, & Performance > Water-Meth Injection / Nitrous & Intercooler Cooling


Reply
 
Thread Tools
Old 03-21-2007, 06:59 AM   #31
STI Driver
 
Posts: 212
Join Date: Feb 2006
Trader Rating: (0)
Default

Quote:
Originally Posted by Clark_Kent
AwdMonsta and Ninjaboy76-How long (mileage) did you run your turbo/meth setup before you experienced issues?
Block/entire build only had about 9,000 on it and almost 3,000 of that was breakin. Brand new Axis stage 2 block. And I did everything right too. I replaced everything. Studs, hoses, gaskets, oil pump, water pump, fluids, cleaned the heads, etc. MZM put that motor together tighter than a well you know. Either the meth was the culprit or the rods just failed due to the power. All I know is that I had misfire codes for about 2 months on #2 and #4 cylinders at low speed/idle. They went away after I got my injectors cleaned for about a week. Then about a week later I got gas and the rough idle came back. Then boom later that afternoon.


This ad is not endorsed by this member. Please register or login to hide this ad.
awdmonsta is offline   Reply With Quote
Old 03-21-2007, 07:16 AM   #32
Spec C Club
 
Car: 08 XT
Fav Mod: My foot!
Location: N Va
Posts: 1,144
Join Date: Dec 2005
Trader Rating: (0)
Send a message via AIM to PigsXTi
Default

I was just going to say that I've bit a bit questionable about meth lately. There seems to be a simalarity with engine break downs and too much meth. Too much meth can really eat away the oil in your engine leading to break down, no matter if you have a built engine or not.

So you've got the octane boosting effects of meth = More Boost/power > Oil consumptions and corrosiveness.

Wether its the detonation that kills your engine or the break down of oil and internal, it still leads to one SH*TY outcome......

Ninja's case definitely got me second guessing meth.
PigsXTi is offline   Reply With Quote
Old 03-21-2007, 07:42 AM   #33
S204 Racer
 
Fav Mod: Dyslexia
Location: Central, NJ
Posts: 3,360
Join Date: Oct 2004
Trader Rating: (13)
Send a message via AIM to RacerXS
Default

It's not the Meth, or any particular bolt on that kills engines for the most part......it's THE TUNE!
Time & time again I see a story about how this or that "killed my motor", METH does not destroy your motor when tuned properly. In fact it can save you from detonation, which is probably the #1 killer of our motors.
NinjaBoy is a perfect example of a tune destroying a motor.

DON'T SKIMP on the tune! Make sure it's right on. If that means going back 2,3,4 times, then do it. Get Street Tuner, if nothing else to become familiar with how the ECU works and why.

If your going to create an STi that produces over 400WHP, you better be very aware of how the car is running. Get all the proper gauges, keep your eye on everything. But most of all, listen & feel what the car is doing ALL THE TIME. If it does not feel right....do something about it! Or your going to have a broken ring land, a hole in your piston, or a broken rod.
I can tell if my car is running lean without looking at the AFR gauge.
Check your oil every few days, look at the oil catch cans & see whats inside, etc, etc..

You can't just drive a 400WHP STi and not be "in touch" with what the car is doing.
RacerXS is offline   Reply With Quote
Old 03-21-2007, 08:33 AM   #34
Spec C Club
 
Car: 04 Aspen White STi
Fav Mod: exhaust powered intake
Location: Charlotte/Winston Salem,
Posts: 1,180
Join Date: Jul 2006
Trader Rating: (5)
Default

^ thats what I thought as well that meth prevents detonation. also to prevent corrosion run the car for about a minute at the least before you cut it off so that if there is any meth in the intake pipe it will soon dissolve.
B4RSTiwsnc is offline   Reply With Quote
Old 03-21-2007, 10:09 AM   #35
Junior STI Driver
 
Car: Crystal Grey 05 STI
Fav Mod: Turbo
Location: Massachusetts
Posts: 57
Join Date: Jan 2005
Trader Rating: (0)
Default

Over on Nasioc, there are all these guys bragging how they have got these great tunes pushing ungodly amounts of power with 25+ psi on stock turbos. And you wonder why it seems that more people are detonating their motors. Alot of what we are seeing is probably related to tuners and their clients taking chances tuning cars to their absolute upper limit and their driving their car hard.
Everyone wants the most power for their given mods and pushes the tuner to impress them with their "factory freak" STI. We will always have people's engines failing, but I suspect the perceived increase is related to the amount of people pushing their power levels and their respective tuning.
SR2017 is offline   Reply With Quote
Old 03-21-2007, 10:30 AM   #36
520
STi > EVO... Wait what???
 
Car: 03 EVO
Fav Mod: stock :(
Location: Michigan / Saint Louis
Posts: 12,397
Join Date: Oct 2005
Trader Rating: (1)
Send a message via AIM to 520
Default

Which is more corrosive, Meth or Denatured Alky?
+1 on the tune though.
520 is offline   Reply With Quote
Old 03-21-2007, 10:39 AM   #37
The Next Petter Solberg
 
Car: 2005 STI
Fav Mod: Methanol
Location: Boston area
Posts: 931
Join Date: Feb 2005
Trader Rating: (5)
Default

None of the failures in this thread seem to be specifically caused by meth, but rather by too much power on stock block, or poor tune. Meth itself is fine. In my opinion at least. If its washing the oil off your cylinder walls, then you are spraying too much meth. 450 HP on stock block and a ringland breaks, thats from the power level, not the meth.

The corrosive properties of 50/50 meth are minimal anyway.
xrocket21 is offline   Reply With Quote
Old 03-21-2007, 12:02 PM   #38
Spec C Club
 
Car: 04 Aspen White STi
Fav Mod: exhaust powered intake
Location: Charlotte/Winston Salem,
Posts: 1,180
Join Date: Jul 2006
Trader Rating: (5)
Default

I am running 60/40 meth/water right now
B4RSTiwsnc is offline   Reply With Quote
Old 03-21-2007, 12:04 PM   #39
Spec C Club
 
Car: 08 CBR1000RR
Fav Mod: None
Location: Kansas
Posts: 2,396
Join Date: Jun 2004
Trader Rating: (6)
Default

I had my car on the meth for about four months before I started seeing major issues. I was under the impression that 400whp was safe for the stock block. I don't think that is the case anymore, nor would I care to venture down that road again. Regardless if you think the meth caused the failure or not I can tell you that it inadvertantly did. It allowed all of these cars to go beyond the limits of pump gas and put the motor in jeopardy of blowing due to the high HP being made by running the meth. So if you look at if from a cause and effect type of situation then "yes" the meth did lead to the engine failure because it allowed the car to run higher boost and more timing leading to a failure. Without the meth my STI would most likely have not had any problems. And no I do not and did not beat the hell out of the car. I will obviously agree with the tune most likely being off, but that still doesn't change the fact that by me adding the meth lead to my engine issues.
ninjaboy76 is offline   Reply With Quote
Old 03-21-2007, 12:08 PM   #40
Spec C Club
 
Car: 08 CBR1000RR
Fav Mod: None
Location: Kansas
Posts: 2,396
Join Date: Jun 2004
Trader Rating: (6)
Default

Quote:
Originally Posted by awdmonsta
Block/entire build only had about 9,000 on it and almost 3,000 of that was breakin. Brand new Axis stage 2 block. And I did everything right too. I replaced everything. Studs, hoses, gaskets, oil pump, water pump, fluids, cleaned the heads, etc. MZM put that motor together tighter than a well you know. Either the meth was the culprit or the rods just failed due to the power. All I know is that I had misfire codes for about 2 months on #2 and #4 cylinders at low speed/idle. They went away after I got my injectors cleaned for about a week. Then about a week later I got gas and the rough idle came back. Then boom later that afternoon.
I thought you said in your first post that you blew your stock motor. This is hardly a stock motor! Damn! That sucks. I thought I had it bad when I started having issues with mine. When did Topspeed tune your car?
ninjaboy76 is offline   Reply With Quote
Old 03-21-2007, 02:17 PM   #41
Professional STI Driver
 
Car: 06' CGM STI
Location: tampa
Posts: 401
Join Date: Apr 2006
Trader Rating: (1)
Default

Quote:
Originally Posted by Clark_Kent
It just seems odd that the few in this thread that mentioned they have had major engine problems all were running methanol injection. Its a great power adder and safeguard but I think I will pass on injection on my daily driver. 375whp-400whp sounds reasonable with a good tune.
Why is that odd? Especially given the title of this thread
41ants is offline   Reply With Quote
Old 03-21-2007, 02:21 PM   #42
Spec C Club
 
Car: 04 Aspen White STi
Fav Mod: exhaust powered intake
Location: Charlotte/Winston Salem,
Posts: 1,180
Join Date: Jul 2006
Trader Rating: (5)
Default

I want to run 22psi with meth and lets say something did happen and the meth cut out, would the stock block be ok if that did happen
B4RSTiwsnc is offline   Reply With Quote
Old 03-21-2007, 02:28 PM   #43
Moderator
 
Car: 05 Ram 3500 CTD
Fav Mod: Majin
Posts: 14,608
Join Date: Apr 2006
Trader Rating: (9)
Default

Quote:
Originally Posted by B4RSTiwsnc
I want to run 22psi with meth and lets say something did happen and the meth cut out, would the stock block be ok if that did happen
depends on the tune...
lackskill is offline   Reply With Quote
Old 03-21-2007, 02:35 PM   #44
Spec C Club
 
Fav Mod: when it's not blown up
Location: Upstate NY
Posts: 1,591
Join Date: Nov 2004
Trader Rating: (0)
Default

Quote:
Originally Posted by B4RSTiwsnc
I want to run 22psi with meth and lets say something did happen and the meth cut out, would the stock block be ok if that did happen
This happened to me a few times, and also the fpr vacuum line popped off twice, and I'm pretty sure my motor only blew up once

Seriously though, if you had a wideband+egt gauge and caught it instantly, you might be ok.

I am not totally sure I'm going to continue using the meth injection on my new motor build though. I almost think a wet shot of nitrous would be safer
jays05 is offline   Reply With Quote
Old 03-21-2007, 03:49 PM   #45
Spec C Club
 
Car: 04 Aspen White STi
Fav Mod: exhaust powered intake
Location: Charlotte/Winston Salem,
Posts: 1,180
Join Date: Jul 2006
Trader Rating: (5)
Default

yea i have the AEM wideband right now, but i want to get a TurboXS knocklight and EGT gauge and start datalogging, then i think i would be ok, also the Utec has knock control so it will retard timing when it senses knock


This ad is not endorsed by this member. Please register or login to hide this ad.

Last edited by B4RSTiwsnc : 03-21-2007 at 04:34 PM.
B4RSTiwsnc is offline   Reply With Quote
 
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT -8. The time now is 08:31 AM.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Designed & Powered by Domain Architect