knocking eninge sound

[whitecomet666]

hey guy question i have an 87 7mge supra and it makes a ticking sound it makes the sound when its cold about 2000 rpm an up an about 3000 rpm an up when its warmed up any lower it dont make the sound or when i let off the gas it dont make the sound at any rpm an last night it sounded like something broke an now it constantly makes the same ticking sound like a spun bearing or something wrong with the cams but im not sure. it had fresh oil change and the oil was only about a quart low the engine has about 225,xxx miles any answers of what the sound maybe any clues?

[D-Oaten]

Does it make the knocking noise through the entire RPM range now?
Sound like rod knock to me as rod knock is a audible knock. Could also be your valves clicking from having low oil. Check the oil filter and the oil for metal shavings and such but odds are you've got rod knock since 7M's have a tendency to do that when oil gets low.

[whitecomet666]

Yea it always makes the sound now and yea it sounds like rod knock but idk i mean i jus spun a breaing in my 87 350 firebird and it dont sound like that sounds more like rod knock but like i said idk yet im about to cheeck it out and rip the engine aprt jus trying to find insight b4 i do anything

[TTmk3502]

the tolerences in supras are way finer than that 350 and its a better balanced motor its gonna sound a little different

[supra_villan]

Its your 7m

[whitecomet666]

alright thanx guys o i took the valve cover off an found the cam was scoured to fuck lol thankfully i got new head when i bought the car but im going to do a rering rebuild new head new piston rings an rod breaing

[burlguy]

alright thanx guys o i took the valve cover off an found the cam was scoured to fuck lol thankfully i got new head when i bought the car but im going to do a rering rebuild new head new piston rings an rod breaing

Make sure you do plenty of research before you replace the headgasket and decide what power levels you are going to want.

[whitecomet666]

Yea I was ganna get stock size head gasket but get it permatourque one an Molly coated rod bearings an king something or other piston rings an stock internals are good to 500 horses so I was ganna boost it an have about 10 to15 psi of boost sense compression is what 9.5:1. How's that sound? Good plan or idea?

[thorpedo]

Oh jebuz....

[mikesupra87]

Yea I was ganna get stock size head gasket but get it permatourque one an Molly coated rod bearings an king something or other piston rings an stock internals are good to 500 horses so I was ganna boost it an have about 10 to15 psi of boost sense compression is what 9.5:1. How's that sound? Good plan or idea?

Stock internals are not good for 500 hp. Compression on a GE motor is 9.2:1, not 9.5:1. I wouldnt push the boost past 10psi on a stock GE block.

Not a very good idea to me, but thats just my two cents.

[Supraguy@aol]

ps- just because your cams are scored doesn't mean that was the problem. You still probably have rodknock, and if you do- you'll need to have the crank inspected and the rods resized at the very least.

[87Targa]

Rod knock is usually almost always unmistakable for anything else, sounds just lake someone knocking on a door, not a tapping or a ticking noise. IME, rod knock in its early stages usually starts out when the engine is cold and goes away as the engine warms up. It is only after you let the condition worsen that you hear it after warm-up and through out the rpm range. Toyota engines from that era have noisy injectors and some valve tick that is normal, especially in the 22r(e)engines. Many new to that era of Toyota's mistake the ticking noise for valves, so don't be too surprised if you still here the tick after the rebuild. You might pick up a stethoscope and see if you can here where the noise is coming from, before you tear the engine apart.