cast iron manifold heat protection (JTD)
first: i don't have a EGT gauge (next month i'm buying one)!
But i have problems with the exhaust manifold (JTD 8V). I think my exhaust temperature is to high. The manifold is warped and whistles very loud (not cracked).
What can i do, to protect the exhaust manifold? Is it a good idea, to use heat wrap tape and/or separate the flanges (like yan.ko)? The opinions about that, are very different.
I drive daily vmax, often for several minutes (~4500 revs). I think this is the problem, but i like vmax :-)