why do all imprezas blow up the piston no3... near the turbo? why not give better and higher pressure oil pumps? why not cool the intercooler with a glyco/water hybrid system????

35

Asked by Sep 08, 2011 at 10:59 AM about the Subaru Impreza WRX STi

Question type: Maintenance & Repair

4 Answers

5,865

usually it's the no4 piston that goes due to the fact that it's the last piston to get fuel, with how subaru's fuel rails are set up it dosn't get enough fuel causing it to lean out and eventually sieze, the no 3 piston is not something (as far as I know) that is a common problem.

5,865

Also higher pressure oil pumps are not always better, after a certain point higher oil pressure will actually start to ware lubricated surfaces (such as bearings) faster, it's actually better to have an oil pump that produces a higher volume of oil run through the system, it's all a balancing act. As far as the intercooler system what are you asking about it, do you mean is it a good idea as an aftermarket part or why dosn't the factory install that as a standard system? In the case of the second, the company does not figure it will be nesessary as they do not expect most people to rod their cars that they just bought new, it would also raise the price so it is left up to you to do something of the sort at a later date.

25

Maybe you should invest in a high pressure blue print oil pump from cosworth they are life time warranty they are ment not to break unless you do not out oil on your car

55

the reason would be when oil is moved around(say like a track day like i did with mine) it sorta flows to 1 side and causes the bearings to crap themselves, 1 way ive heard to prevent this is when u do a oil change add like another 500 ml in when it reeads full.....from om that it "should " prevent bearigs from going bang.....also i dunno why the 3rd pisto go but i heard thats common...

Your Answer

Add photo

Related Questions

Impreza WRX STi

Looking for a Used Impreza WRX STi in your area?

CarGurus has 575 nationwide Impreza WRX STi listings starting at $12,000.

ZIP:

Search Subaru Impreza WRX STi Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Subaru Impreza WRX STi Experts

#1 Brian Dombroski
Brian Dombroski
Reputation 120
#2 Tom Demyan
Tom Demyan
Reputation 50
#3 Charlie Arledge
Charlie Arledge
Reputation 40
View All

Related Models For Sale

Used Subaru Impreza WRX
58 Great Deals out of 1,130 listings starting at $1,500
Used Mitsubishi Lancer Evolution
17 Great Deals out of 634 listings starting at $13,977
Used Subaru WRX STI
21 Great Deals out of 1,300 listings starting at $26,950
Used Subaru Impreza
170 Great Deals out of 11,067 listings starting at $1,899
Used Subaru WRX
36 Great Deals out of 3,553 listings starting at $16,999
Used Ford Mustang
535 Great Deals out of 42,628 listings starting at $1,699
Used BMW M3
68 Great Deals out of 2,045 listings starting at $2,650
Used Honda Civic
798 Great Deals out of 70,153 listings starting at $1,200
Used Subaru BRZ
24 Great Deals out of 706 listings starting at $13,987
Used BMW 3 Series
1,461 Great Deals out of 38,440 listings starting at $1,890
Used Nissan 370Z
60 Great Deals out of 3,057 listings starting at $10,995
Used Chevrolet Camaro
378 Great Deals out of 40,505 listings starting at $3,500
Used Nissan GT-R
7 Great Deals out of 625 listings starting at $44,000
Used Nissan 350Z
82 Great Deals out of 1,472 listings starting at $3,950
Used Mitsubishi Lancer
68 Great Deals out of 5,935 listings starting at $1,998