yea now that u mention it i have yet to hear about sum1 blowin up while they were at wot.
My Surgeline Tuned ms3!
- Thread starter zx2man
- Start date
yea now that u mention it i have yet to hear about sum1 blowin up while they were at wot.
Yeah, there are multiple issues being debated running the gamut from the size and shape of the connecting rods at the wrist pin end, the direction the DISI injectors are firing (over to the side of the top of the piston close to the cylinder wall), the shape, design and configuration of the piston rings and lands, the effect of running pig rich on lubrication, including fuel dilution, the problem with the PCV valve and oil return line from the turbo, and a whole host of other possibilities. No one knows for sure.
However, there don't seem to be many reports of popped engines on CX-7's with the same engine we have. My read is that it is happening more on modded MS3 and MS6 engines, not so much at WOT. Modded engines seem to be more prone to popping while crusing at relatively low rpm while bringing the engine up on boost at the point where boost rises quickly and torque is at its max. Puzzling.
However, there don't seem to be many reports of popped engines on CX-7's with the same engine we have. My read is that it is happening more on modded MS3 and MS6 engines, not so much at WOT. Modded engines seem to be more prone to popping while crusing at relatively low rpm while bringing the engine up on boost at the point where boost rises quickly and torque is at its max. Puzzling.
Yeah but the damage is done at WOT. Most people bend their rods at wot and don't realize it. Then their car is just a ticking time bomb. This car produces too much torque down low in the rpm range. So basically when your just driving normally your rods are still taking a beating. Until they finally snap.
i see
I knew thats what is was !!!
No. They have to be removed to properly check them. There are factory specs on just about every dimension of a connecting rod and they are all critical, including the length of rod bolts as well (they stretch when torqued and can stretch more under extreme load). The rod must also be absolutely paralled to the bore at top dead center and the housing of both the wrist pin end and the crank journal end must be absolutely parallel to the crankshaft.
The tolerances are very tight and are not subject to eyeball evaluation. These measurements are down to the thousandths of an inch and as to the actual mating surfaces, housing bore and journal bearing surfaces, down to the ten thousandths of an inch. That's .0001 inch. A human hair at its base averages 4 thousandths of an inch. These tolerance can be as close as one 40th of the width of a human hair.
If you can see anything wrong, it's way too late.
Although our rods are forged and stronger than cast, they were not shot peened, stress relieved or polished like racing rods, and not as strong as aftermarket forged rods which typically receive that extra attention.
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Or maybe trolls. You know the kind, those from EVO and WRX websites who go around trying to destroy the competition! I think they still live under bridges but they try to hurt our engines when we are sleeping.
honestly..though its too late now..I dont think car companies have really mastered this new direction injection process you see in the disi motors. I think theres some treaks that need to be worked out. I think if mazda went with a traditional engine platform like the 2.0 liter "bulletproof' engines you see in the gen 9 evo's we be alot better off..Not to say our 2.3 liter disi motors are ass..and yes the internals are strong..but if mazda had to start all over..im pretty sure the direction wouldnt have been exact. But mazda has alwas liked to be alittle different..thier Rotary engine program is futher proof..regardless I feel safe in my ms3..All I can do as a sencible car owner is to do daily maintence and feed it the best fluids..and drive the car right..if it still goes boom,then its egg on my face and least I did the best I can. Im sure as heck not gonna drive around all nervous like and get ready to hear my engine go boom lol
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- 2007 MS3
New? The technology was first used in the late 1950s.
lol yea evo x's are making sum crazy power on stock block nd internals... even with a couple bultons the car makes well into the 300's almost if not httin the 400's with a good tune.. but $40,000 for a motor and recaro seats isnt my kind of buy lol
Get em for about 28k right now lol
SubieKiller3
Banned
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- 2008 black mica mazdaspeed mazda 3
pro tune or not, its all about what your internals can handle bud. no matter how "safe" you think your car is tuned, you are still asking it to do more than what it was designed. I honestly would not waste my money tuning a car unless I rebuilt the motor.
sorry mid life crisis..your right its not new tech. my super bad....I guess I didnt mean its new persay..its just not somethign your seeing everyone doing these days. and **** me iguess for running a protune subiekiller.. that settles it! im gonna go blow 5 grand right now to rebuild my engine for the current 15 psi that I have running on this car!
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- 2007 MS3
I hope this isn`t coming from my comment. I think it`s great that you got a good tune to make the most of your mods.
While the ECU is very adaptive and will certainly cover minor mods, what some people seem to be overlooking is the fact that it was programmed with a certain range in mind. A certain expected max air/fuel flow, max boost pressure, etc. There comes a point where even bolt on mods might go beyond the point the stock maps and built in adaptability can properly cover. At that point you need a tune. Even within the parameters of the stock maps, it is still a good idea to tune the car for your specific mods, fuel of choice, altitude, etc.
No Mid life the comment wasnt cause of you, your one of the more logical and common sence thinking members on these forums from what I have alwas seen of your comments-
...and yes you right about direct injection..mercedes was using in 1955 I atleast know that,guess my point at that time was maybe the whole disi motor isnt mastered completly. anyways thats besides the point..Hearing a comment that not wasting money on a tune till you build a motor is rather retarded..yes if we all had money trees growing outside out our front yard and could just drop money like it was nothing,then hey why not build a motor. But living here in the northwest I have access to tuning shops like Surgeline,Ralitek,Perrin,Horsepower freaks and more...you have other places in the country like AMS or Buschur and many more who day after day are tuning Sti's,Evo's,ms3's,srt4's,GTR's,Supra's,wrx's,GTI's, and many many more WHO are running awesome power without upgrading the internals..some of these tuners-mechanics have over 20 years of experience and they know what thier doing..they read the blue prints of the engines..they check the specs on the blocks..they read engineer statements on the psi threshold on the these engines and the breaking strenght of the rods and pistons..the compression ratio..all these things and soooo much more..and while im not expert I have friends who are,are have worked around lots of tuners who know as well..and theres so many options of running a safe tuned car with stock internals..you just dont be a ****** idiot about it....running 600 whp on stock internals sti isnt a good thing...shoving 21 lbs of boost on a reg basis on a ms3 isnt good..the brand new sti pistons are cast steel..so tuners will tell you right away..if you plan on going past stage 2=tbe+intake+tune..then you need to go forge cause they can crack....I cant count how many people are running "more than stock" hp on thier stock internal cars..My friend in Chehalis,Wa has 34,000 miles on this 450 hp daily driven 2008 r32...hes made several trips to cali in that car..and it run likes a champ and I could go on and and on and on..so anyways my point is yo dont alwas need forge internals..most of the time you dont...these motors these days are built very strong using modern technology..once you understand the limits of these platforms then you can decide if you need to upgrade..but to just say that you are wasting your money on a tune unless you do go forge sounds like a d-bag statement.
...and yes you right about direct injection..mercedes was using in 1955 I atleast know that,guess my point at that time was maybe the whole disi motor isnt mastered completly. anyways thats besides the point..Hearing a comment that not wasting money on a tune till you build a motor is rather retarded..yes if we all had money trees growing outside out our front yard and could just drop money like it was nothing,then hey why not build a motor. But living here in the northwest I have access to tuning shops like Surgeline,Ralitek,Perrin,Horsepower freaks and more...you have other places in the country like AMS or Buschur and many more who day after day are tuning Sti's,Evo's,ms3's,srt4's,GTR's,Supra's,wrx's,GTI's, and many many more WHO are running awesome power without upgrading the internals..some of these tuners-mechanics have over 20 years of experience and they know what thier doing..they read the blue prints of the engines..they check the specs on the blocks..they read engineer statements on the psi threshold on the these engines and the breaking strenght of the rods and pistons..the compression ratio..all these things and soooo much more..and while im not expert I have friends who are,are have worked around lots of tuners who know as well..and theres so many options of running a safe tuned car with stock internals..you just dont be a ****** idiot about it....running 600 whp on stock internals sti isnt a good thing...shoving 21 lbs of boost on a reg basis on a ms3 isnt good..the brand new sti pistons are cast steel..so tuners will tell you right away..if you plan on going past stage 2=tbe+intake+tune..then you need to go forge cause they can crack....I cant count how many people are running "more than stock" hp on thier stock internal cars..My friend in Chehalis,Wa has 34,000 miles on this 450 hp daily driven 2008 r32...hes made several trips to cali in that car..and it run likes a champ and I could go on and and on and on..so anyways my point is yo dont alwas need forge internals..most of the time you dont...these motors these days are built very strong using modern technology..once you understand the limits of these platforms then you can decide if you need to upgrade..but to just say that you are wasting your money on a tune unless you do go forge sounds like a d-bag statement.
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