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Old 02-13-2021, 11:41 PM   #1
Palmtree77
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Default Engine rebuild question

I'm new to rebuilding subaru engines I have an 05 wrx the engine is going to need rebuilt soon its starting to go out I'm wanting to know what I should get to make it the most reliable I with the mods I have now and maybe a few extra right now there isn't much done other then EBCS,accsessport and a catless wide bellmouth down pipe and catless up pipe. I need to know everything that is safe to reuse and what would be the best option for parts upgrade to make the engine a better runner like I mentioned I'm very green with this so part brands and best parts yo upgrade without wrecking the wallet thanks
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Old 02-14-2021, 01:48 AM   #2
D-Rodman
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Default Engine rebuild question

There are so many threads like this one, you can find the answers you seek searching right here. But letís see what it is you should do. What is your budget for your new motor venture ?
Sounds like you want to keep it with the stock turbo and basic stage 2 power level, correct ? How many miles on your motor now ? Is your stock turbo as old as your motor ? Is your current motor consuming oil between oil change intervals ? Do you believe your turbo can be used on your new motor ? Are you planning on doing the engine removal and tear down yourself ? Letís just start there and get some answers.
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Old 02-14-2021, 03:50 PM   #3
Palmtree77
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Yes i plan on keeping about a stage 2 power range the engine and turbo both have e 135,000 miles its not consuming much oil if any I don't have a specific limit on price but I would like to keep it as low as possible without making a trash engine I will do the dismantle and everything myself
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Old 02-14-2021, 04:38 PM   #4
K3rm1tth3fr0g
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Quote:
Originally Posted by Palmtree77 View Post
Yes i plan on keeping about a stage 2 power range the engine and turbo both have e 135,000 miles its not consuming much oil if any I don't have a specific limit on price but I would like to keep it as low as possible without making a trash engine I will do the dismantle and everything myself

Good luck!
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Old 02-14-2021, 06:33 PM   #5
murrdogg24
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two words....google and youtube...
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Old 02-14-2021, 10:09 PM   #6
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on car parts so PM
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We don't know you wants, use case or budget. The very best thing you can get is a leased Hewland dogbox from Prodrive. They are $75,000. That would suit you with an unlimited budget and a desire to dominate the rally circuit.

Without wants, use case or budget, the answer you seek is not the answer you expect. It is built the motor appropriately. Unless you are going for 500, just get some pistons, have the heads get an OEM refresh and be done with it. Replace everything rubber throughout the vehicle. Brand new MAF, turbo inlet and BCS. Custom tune to 85-90% of its potential. Then drive it nicely never stomping the gas when in 5th gear or higher depending on your transmission.

The real killer of Subarus is the owner's right foot.
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Old 02-14-2021, 10:28 PM   #7
K3rm1tth3fr0g
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Quote:
Originally Posted by Unabomber View Post
We don't know you wants, use case or budget. The very best thing you can get is a leased Hewland dogbox from Prodrive. They are $75,000. That would suit you with an unlimited budget and a desire to dominate the rally circuit.

Without wants, use case or budget, the answer you seek is not the answer you expect. It is built the motor appropriately. Unless you are going for 500, just get some pistons, have the heads get an OEM refresh and be done with it. Replace everything rubber throughout the vehicle. Brand new MAF, turbo inlet and BCS. Custom tune to 85-90% of its potential. Then drive it nicely never stomping the gas when in 5th gear or higher depending on your transmission.

The real killer of Subarus is the owner's right foot.



Listen to big ron.


Best words of advice you'll get right here.
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Old 02-15-2021, 12:39 AM   #8
jvh22a
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i did a budget rebuild with some ebay parts

i got
new ebay cast pistons and rings
used sti rods
king race bears
new oem head bolts
ebay timing kit
oem water pump/ thermostat
oem 11mm oil pump
oem pvc system
ebay evergreen full gasket kit
evergreen mls headgasket
oem new clutch and flywheel

runs great on ebay 16g 950cc injectors, 21psi
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Old 02-15-2021, 06:47 AM   #9
D-Rodman
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Quote:
Originally Posted by Palmtree77 View Post
Yes i plan on keeping about a stage 2 power range the engine and turbo both have e 135,000 miles its not consuming much oil if any I don't have a specific limit on price but I would like to keep it as low as possible without making a trash engine I will do the dismantle and everything myself


Sounds to me like you donít need a new engine nor rebuild. Sounds to me like you have a perfectly good motor with only 135,000 miles. Sounds to me like you can continue to take care of your motor and itíll take care of you. An ej205 with consistent oil changes and good quality oil will go well over 200,000 miles. Make sure to keep an eye on oil level, Iíve been using Mobil 1 0w40 with good results. Donít use Mobil 1 5w30.
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Old 02-15-2021, 07:50 AM   #10
snow_bound26
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What makes you think you need a new engine? People, myself included, have gotten well over 200k on a stock engine at stage 2 power levels just by doing basic maintenance. So why do you need a new engine?
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Old 02-16-2021, 12:47 PM   #11
runner19
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I have a 02 WRX that I bought new. Rebuilt in 2010. Still going strong.

Advice given based on you stated power level

1. What is wrong with your engine?

I would be ideal to do a baseline loggiing run, before engine build. Have some one look at it to seem the state of the engine.

These things tend to go over budget.

2. Other items that need replacing

Plan on replacing all rubber pipes, coolant pipes, manifold exhaust gaskets.
The air lines(10mm) would have deteriorated. Once you move them, they will break.
Clean IACV
turbo intake pipe
your tgvs may have given up the ghost.



rebuild info

At that power level OEM item are fine.
you may look into forged pistons. i like cp
I like acl bearings.
check water pump
check oil pump.
check oil pickup tube.
check radiator
check a/c condensor
check for coolant leaks
check for intake pressure leaks
check oem bov
clean boost solenoid

get block line honed

if you rebuild it before it goes boom, you can reuse the oem heat interchanger.

You cannot/should not reuse oem head bolts. I would get arp. They work out the same price.
Do not get the arp case bolts.

You may want to do clutch while you are there. OEM is best at the power level

replace
fuel pump


Servicing
service oem injectors.
clean tmic


www.hpacademy.com has some great free content.


Hm this is my third time typing this. It does not want to save

Last edited by runner19; 02-16-2021 at 12:58 PM.
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