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Old 02-19-2016, 11:56 PM   #1
General_buttnaked
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Default reliability of a modified STi ?

hello guys,

I currently have a WRX and did some mods on it , but the car is pretty much to it's limit before investing big money in it. So, I decided to buy a STi and start from there. I found a 2005 that has this, which is pretty much everything I would do :

Crankshaft OEM Subaru
Piston Manley
Connecting Rod Manley
Stud and head gasket APR
Bearing and Crank ACL
Deatshwerks Injector 740cc
Fuel Regulator AEM
Fuel Pump Walbro 255
Turbo Ball Bearing Turbinetech
Aluminium flywheel
Clutch ACT 6 puck
Front Mount Intercooler
BOV
Catback 3"
Catless Downpipe 3"
Cardran Boost and Wideband
tuned by WALTER
Swaybar STI JDM
Spring TEIN
HID Leveling


My question is how long can I expect to motor to survive ? I would drive it around 5,000 Km a year(3,000 miles). The car currently has 80,000km (50,000 miles), the motor was built when it had 17,000km (10,000 miles) and the guy who sells it says it makes around 500BHP. thanks a lot !
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Old 02-20-2016, 12:09 AM   #2
sc00by4life
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Quote:
Originally Posted by General_buttnaked View Post
My question is how long can I expect to motor to survive ? I would drive it around 5,000 Km a year(3,000 miles). The car currently has 80,000km (50,000 miles), the motor was built when it had 17,000km (10,000 miles) and the guy who sells it says it makes around 500BHP. thanks a lot !
I am going to be very blunt because I shouldn't have to list all the red flags in your post.

If you are asking this question, you are not the kind of person that should be buying this car. I'm also going to wager, that you don't have the money to repair a car like that when something happens (it will).

I'm being 100% dead serious.
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Old 02-20-2016, 12:42 AM   #3
pooster.online
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sorry to be a killjoy, but no one can really answer your question, there are some WELL modified STi's that can last 100k, and others that wont hit 1000 miles.. the mod list is kinda questionable though...

what kind of turbo is turbinetech? never heard of it. i would take it to a experienced subaru shop for a valid opinion.. compression test among others are something to consider.

best of luck!
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Old 02-20-2016, 02:31 AM   #4
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So what mods do you exactly have on your WRX and what are your plans for the car? Btw that mod list is nothing impressive. What is "Tuned by WALTER" supposed to mean? And I've never heard of a Turbinetech turbo before. I doubt that car makes anywhere close to 500hp. You should ask for dyno sheets because I guarantee he is lying to you.
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Old 02-20-2016, 08:19 AM   #5
HinshawWRX
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If we had a crystal ball to predict when a motor would blow we'd all open engine shops.

And I'm guessing you'd be sinking a lot of money into this STI to buy it, which would be your investment of making your wrx "fast."

Either way, if you want fast don't get a wrx or sti.
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Old 02-20-2016, 09:23 AM   #6
Loyale93
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As above folks have said, there's exactly NO WAY to know how long that motor or any motor will last. Once modified, it's only as good as the next mile it does.

And scooby4life said above, if you have to ask, you're not ready for a heavily modified Subaru. And there are a lot of red flags in that list of mods.

Walk away from it. Trust us.
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Old 02-20-2016, 10:33 AM   #7
godfather2112
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Here is the most simplistic answer anyone is going to give you, ready?


If you cant afford to rebuild the engine of an already modified vehicle if it were to break, then you cant afford it.


I'm guessing here, but by how many miles are on that built motor, it's probably going to see the end of its days soon.
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Old 02-20-2016, 10:44 AM   #8
General_buttnaked
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Quote:
Originally Posted by sc00by4life View Post
I'm also going to wager, that you don't have the money to repair a car like that when something happens (it will).
Okay guys, thanks for the answers, but I'm not asking how much it will cost if it breaks, but how long could it survive. It's not a question of money, but I like to plan before these kind of things happen.

I now understand that it can't be planed. I will got see it tomorrow and ask for some questions and dyno proof. Thanks a lot.
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Old 02-20-2016, 10:56 AM   #9
sc00ter
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Short answer: It's all in the tune and how you drive it.

Long answer: Unfortunately, you don't know how good the tune is and you have no idea how the previous owner drove it. Though, I'm sure he had no problem telling you he "babied it".

If you do decide to make the purchase, make sure you keep an additional $4k or so put away for WHEN that motor goes. Hell, I'd do that even if the car was bone stock. It is an 11 year old car, after all.
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Old 02-20-2016, 10:56 AM   #10
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Quote:
Originally Posted by General_buttnaked View Post
Okay guys, thanks for the answers, but I'm not asking how much it will cost if it breaks, but how long could it survive. It's not a question of money, but I like to plan before these kind of things happen.

I now understand that it can't be planed. I will got see it tomorrow and ask for some questions and dyno proof. Thanks a lot.
How is anyone supposed to know the answer as to how long it will last?

How will a dyno tell how long the engine will last?

Its always a guess at best when taking on someone else's project. Did they take any short cuts, use cheap ebay parts, reputable tuner, ETC
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Old 02-20-2016, 11:03 AM   #11
General_buttnaked
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Quote:
Originally Posted by sc00ter View Post
Short answer: It's all in the tune and how you drive it.

Long answer: Unfortunately, you don't know how good the tune is and you have no idea how the previous owner drove it. Though, I'm sure he had no problem telling you he "babied it".

If you do decide to make the purchase, make sure you keep an additional $4k or so put away for WHEN that motor goes. Hell, I'd do that even if the car was bone stock. It is an 11 year old car, after all.
Thank you finally an answer that doesn't assume anything about me

Yeah that's a good idea ! I already have plenty of money for this car so keeping a little bit aside would be a great idea. I would redo a tune on it anyway by my current tuner and I am a careful driver that doesn't beat is car to death.
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Old 02-20-2016, 11:08 AM   #12
General_buttnaked
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Quote:
Originally Posted by wrxlaunch View Post
How will a dyno tell how long the engine will last?
Sorry I wasn't clear enough, but it's because someone wrote he didn't believe it made around 500hp and I will ask for at least a proof or something like that.

Quote:
Originally Posted by wrxlaunch View Post
Its always a guess at best when taking on someone else's project. Did they take any short cuts, use cheap ebay parts, reputable tuner, ETC
yeah that's true, I know it was done by a garage, but I still don't know which one. I will ask him tomorrow.
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Old 02-20-2016, 11:51 AM   #13
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injectors are no where close to large enough to support 500hp
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Old 02-20-2016, 01:07 PM   #14
Loyale93
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Quote:
Originally Posted by WRX boarder View Post
injectors are no where close to large enough to support 500hp

That would be one of the red flags we were mentioning earlier.

OP, but it or don't. Yes, we made some assumptions that you don't know a lot. If we're wrong, great!! If we're right, follow the advice.

You seem like you're just looking for people to reassure you that it's a good deal. Which is fine. All the answers telling you to pass are real answers. And honestly, the more sensible ones.

Do what you want, but there are a bunch of red flags in the story you're telling us.
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Old 02-20-2016, 01:15 PM   #15
FaastLegacy
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Why not just buy a stockish STi and build one yourself if you're Mr. Moneybags? That way at least you'll know it was built right.

Why buy someone else's giant question mark?
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Old 02-20-2016, 01:37 PM   #16
Elusivellama
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Without even looking at the car in question, there is a 99.99% chance that the car is f-ed.
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Old 02-20-2016, 02:11 PM   #17
sc00by4life
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Quote:
Originally Posted by General_buttnaked View Post
Thank you finally an answer that doesn't assume anything about me
I'm sorry that your generation feels that you are all unique and special, but you aren't.

We are assuming because the things you post making it VERY obvious you have NO business buying the car (hell NOONE does really).

Quote:
Yeah that's a good idea ! I already have plenty of money for this car so keeping a little bit aside would be a great idea.
Lets say, hypothetically, you buy this car and it DOES make 500hp.

Do you have the cash to build a 500hp motor right now AND carry the loan on the car? Because your OP clearly implies you can't.

Quote:
I would redo a tune on it anyway by my current tuner and I am a careful driver that doesn't beat is car to death.
You cannot reverse damage that has already been done.

Hell you should buy the car just to find out if we are right or not. Either you'll have a sweet 500hp car - or it will be an extremely expensive life lesson.
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Old 02-20-2016, 03:08 PM   #18
Jack
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I think these guys are introducing a bit too much drama about a modified STi. I think that you'll get a full week before catastrophic problems start.
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Old 02-20-2016, 03:36 PM   #19
Daniel Dudley
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Quote:
Originally Posted by Jack View Post
I think these guys are introducing a bit too much drama about a modified STi. I think that you'll get a full week before catastrophic problems start.


HA !
That engine has a lot of miles for a built motor, if it is driven the way most of us would drive it.

Have you read all the stickies yet ? Seems like there is one titled, ''Are you really sure you want 400 HP'' or some such nonsense.

They used to have a saying, Speed costs, how fast do you want to spend ? A V8 Mustang or a C5 Corvette would be a lot tougher car, and easier to afford. FWIW, There is nothing sadder than a young guy who spends all his money on a built Subaru, only to have it blow up in a few weeks.

If you stick around, you will find that it happens to new NASIOC members on a regular basis. You have been around long enough to know this is true.

However, since the engine was done by a tuner, AKA ''Walter'', why don't you take the car to him, and get a pre purchase inspection done ? This is done all the time on cars that have motors that are worth as much as the entire car. And consider that if you can't afford to have a PPI done and walk away from the car if it isn't good, you really can't afford to own the car. I've had a few cars over the years. It isn't unusual to have a performance car need 5,000 dollars worth of work within a few months of you buying it, even if it did run great, and you did have it checked out.

DO you have a contingency fund, or can you afford to drive something else and leave the car parked until you can afford to fix it ? My WRX has less than 60,000 miles on it, (and only 10 K miles on a stage 2 tune that only I have driven). It is the car I drive when the other cars are down. Consequently, I don't hammer the piss out of it, because I am not intending to sell it. If I flogged the living hell out of it, I'd probably be looking to sell it before it hits 100,000 miles. Something would just start setting little alarm bells off in my mind that I should sell it now, while everything is still running perfectly. And I have done that, just sold cars because I felt it was time.

People do that.

Last edited by Daniel Dudley; 02-20-2016 at 03:54 PM.
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Old 02-20-2016, 04:02 PM   #20
General_buttnaked
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Quote:
Originally Posted by Loyale93 View Post
That would be one of the red flags we were mentioning earlier.
Yeah the car does have a lot of red flags. I see that now. I'm not looking for reassurance. I'm looking to buy my dream car, but I don't want to have a car that will always be in the garage where I can't enjoy it.

I will buy a stockish one and build it myself.
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Old 02-20-2016, 04:31 PM   #21
General_buttnaked
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Quote:
Originally Posted by FaastLegacy View Post
Why buy someone else's giant question mark?
yeah that is what I was thinking at first, but everybody can be wrong so I ask the question. Thanks for the advice

Quote:
Originally Posted by sc00by4life View Post
I'm sorry that your generation feels that you are all unique and special, but you aren't.
Again, you are assuming something on me that you don't know and completly change the subject. This doesn't help anyone.

Quote:
Originally Posted by sc00by4life View Post
You cannot reverse damage that has already been done.
Very good point !

Quote:
Originally Posted by sc00by4life View Post
Do you have the cash to build a 500hp motor right now AND carry the loan on the car? Because your OP clearly implies you can't.
Yes I do and that's what I'm going to do. It's too much of a risk and I don't want to have a car that will sit in the garage where I cannot enjoy it because it doesn't work.

Thanks to those of you who were helpful ! It is very appreciated. I think my choice is made. I will buy a stockish one and start from there. It will take a little bit longer to have everything I want, but at least I will have my proper dream car well made.

To those who assumed I have no money to buy this STi based on this thread ..... common. It's not because someone worries about a purchase that he can't afford it.

Last edited by General_buttnaked; 02-20-2016 at 04:49 PM.
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Old 02-20-2016, 05:06 PM   #22
Howl
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You guys are all dumb. I happen to know this engine will last 3 months, 5 days and 6 hours, which is 1,073 more miles. How hard was that?
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Old 02-20-2016, 05:10 PM   #23
General_buttnaked
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Quote:
Originally Posted by Howl View Post
You guys are all dumb. I happen to know this engine will last 3 months, 5 days and 6 hours, which is 1,073 more miles. How hard was that?
Oh well **** it !! I wanted something that would at least last 3 months 6 days and 9 hours which is 1126 more miles... that sucks ! well too bad
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Old 02-20-2016, 07:07 PM   #24
xabre1200
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Please lock this thread already.
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Old 02-20-2016, 11:55 PM   #25
monkeyposeur
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How much does the dude want for it? If it's cheap just buy it and have it be a project car. Enjoy it and beat on it and in the meantime buy a built shortblock from IAG or another vendor and assemble a sweet new engine in your bedroom or front room or wherever on an engine stand.

But if you want to buy a stockish STi, then keep your wrx as your daily and build the STi. I don't see why you think an STi is much better than a wrx. You can always mod your wrx to be as good or better than an STi.

Sounds like you have deep pockets. You're a lucky guy so have fun! I love project cars. I bought my WRX for $3k with a burnt valve. I build a cool hybrid and swapped it in. The tranny was bad but I didn't know it at first. So when it crapped out I swapped in a JDM 5MT. Make some local subie bro buddies and you'll have some good times!
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