Post by
WDRacing »
https://forums.nicoclub.com/wdracing-u3125.html
Wed Mar 07, 2007 1:55 pm
The exhaust heat shield covers the exhaust manifold. Find the hottest part of the car when its running, bingo thats it.
The KA24 has timing chains not a belt. One of the more prone noises is from the upper timing chain guard which can be removed with no negative side effects. Simply pull the valve cover and remove the two bolts holding the guard on and disguard the guard...lol.
Or in what I think is the worst case, which usually happens at 3000 rpm, you have a case of rod knock. Which at best means all new main and rod bearings.