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

6,345

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.

6,345

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 613 nationwide Impreza WRX STi listings starting at $10,990.

ZIP:

Search Subaru Impreza WRX STi Questions

Subaru Impreza WRX STi Experts

#1 Brian Dombroski
Brian Dombroski
Reputation 120
#2 Tom Demyan
Tom Demyan
Reputation 60
#3 Charlie Arledge
Charlie Arledge
Reputation 40
View All

Related Models For Sale

Used Subaru Impreza WRX
47 Great Deals out of 1,277 listings starting at $3,000
Used Mitsubishi Lancer Evolution
17 Great Deals out of 494 listings starting at $13,998
Used Subaru WRX STI
10 Great Deals out of 1,453 listings starting at $25,900
Used Subaru WRX
34 Great Deals out of 3,584 listings starting at $19,373
Used Subaru Impreza
203 Great Deals out of 19,393 listings starting at $1,995
Used BMW M3
50 Great Deals out of 1,361 listings starting at $3,800
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Honda Civic
811 Great Deals out of 88,099 listings starting at $1,299
Used Subaru BRZ
8 Great Deals out of 1,126 listings starting at $11,995
Used BMW 3 Series
943 Great Deals out of 30,262 listings starting at $1,000
Used Nissan 370Z
60 Great Deals out of 2,882 listings starting at $11,995
Used Chevrolet Camaro
242 Great Deals out of 31,193 listings starting at $369
Used Nissan 350Z
51 Great Deals out of 1,206 listings starting at $2,899
Used Dodge Challenger
212 Great Deals out of 23,431 listings starting at $7,990
Used Dodge Charger
454 Great Deals out of 29,322 listings starting at $2,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.