How hard is it to fix engine knock?

[Firebird Phoenix]

Whats worse case scenario on what I would have to replace on a 3.8 with engine knock? Reason I ask is I have a chance to buy a cheap 98-02 firebird that is nice but has a knock.

[kristen]

Re: How hard is it to fix engine knock?

i would never ever buy it.

even if you fix it figure that you probably have metal shavings in your system now. so if you fix your engine...the metal can f up the rebuilt engine if you don't take it fully apart and pressure cleaned

[cam98aro]

Re: How hard is it to fix engine knock?

engine knock is usually caused by bad bearings, broken rod, or piston slap

if you spun a bearing, you might have to get the crank polished, or ground down for an oversize bearing, or have to clean the rod up, if it is a broken rod, your cylinder wall could be gouged, meaning you would have to get the block bored out, or if its piston slap, you will need at least a new piston

since this is just a 3.8l engine, i would buy a new one, there is no reason to spend $400+ on machine work when you can get a full engine for a little more (or less)

[Firebirdkid96]

Re: How hard is it to fix engine knock?

how much do they want for the car?

[StrtRacer98]

Re: How hard is it to fix engine knock?

Depends on how cheap the car is, just say screw it.

Buy the car, rip the old motor out and forget about it, and pick up a good used motor for $500 or so, and re-install.

[Firebird Phoenix]

Re: How hard is it to fix engine knock?

They are asking $2,500 but I figured may be able to talk them down. Its pretty nice looking, here is a picture of it.



Maybe not?

[Leonard 3.8L]

Re: How hard is it to fix engine knock?

Engine knock means there's something seriously wrong with the internals. You're looking at an overhaul there. You're talking about a thrown rod or something of that nature.