Strange Knock

[novajoe]

I was trying to race a Z06, and was holding my own till........


@ about 7200 RPM in 4th gear the motor started to miss ( badly )

Now I have a metalic hammering noise coming form the motor.


It is a quad cam 4.6
as far as I know it has never been sprayed
and has clean oil

Anyone have an idea?

:WTF:

[grn95t/a]

loose nut behind the wheel! just my guess?

[novajoe]

That very well could be!

[Jazz]

Sounds like rod knock. I have the same problem. Lets tear into the motor this weekend. I just got a brand new cresent wrench we can use to torque the caps back down with. Its got a nice no slip handle!

[grn95t/a]

never ever use a cresent wrench to torque with!!! always use the robo grips!

[The_rabbit1]

take valve covers off and check valvetrain first

[The_rabbit1]

never ever use a cresent wrench to torque with!!! always use the robo grips!

i always use a small/medium pipe wrench, it really digs into the nut to ensure grip! best part: it leaves the notches for future retorqueing

[grn95t/a]

i always use a small/medium pipe wrench, it really digs into the nut to ensure grip! best part: it leaves the notches for future retorqueing


shoot all this time i've been doing it wrong!! that might explain all the spun bearings????

[novajoe]

I thought a welder works better to keep thing from coming lose

[socalmach]

1st step p/p heads and intake
2nd add Ford GT cams (Don't forget to upgrade springs)
3rd build bottom end:yep:

I'll be back in a week

[novajoe]

I never said it was in a mustang!

Your car hasn't been more than 5 over the limit

But yours is washed waxed and if I get time to day the inside will be cleaned.

[socalmach]

In that case I guess I owe a few lunches then.
But those steps should still be taken.

[novajoe]

Now if I only knew where t oget an extra 4.6 4 valve??????