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

5,695

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.

5,695

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 645 nationwide Impreza WRX STi listings starting at $8,500.

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 50
#3 Charlie Arledge
Charlie Arledge
Reputation 40
View All

Related Models For Sale

Used Subaru Impreza WRX
47 Great Deals out of 1,242 listings starting at $1,999
Used Mitsubishi Lancer Evolution
15 Great Deals out of 702 listings starting at $14,977
Used Subaru WRX STI
26 Great Deals out of 1,093 listings starting at $26,695
Used Subaru Impreza
195 Great Deals out of 6,826 listings starting at $1,200
Used Subaru WRX
39 Great Deals out of 3,076 listings starting at $18,990
Used BMW M3
76 Great Deals out of 2,167 listings starting at $3,495
Used Ford Mustang
724 Great Deals out of 38,166 listings starting at $1,750
Used Subaru BRZ
32 Great Deals out of 698 listings starting at $14,950
Used BMW 3 Series
1,767 Great Deals out of 40,386 listings starting at $1,350
Used Honda Civic
1,130 Great Deals out of 63,726 listings starting at $995
Used Nissan 370Z
74 Great Deals out of 3,010 listings starting at $11,986
Used Nissan GT-R
570 listings starting at $42,900
Used Chevrolet Camaro
664 Great Deals out of 38,931 listings starting at $2,995
Used Nissan 350Z
79 Great Deals out of 1,441 listings starting at $4,500
Used Dodge Challenger
425 Great Deals out of 24,974 listings starting at $7,980