flat engine output

[weneakhborz]

hi all
my old mans car drives good
but when you wants it to go crazy and drive it fast.i feels like the engine output gets flat at the 3rd gear and takes for ever to rise the speed from 80 to 120-140 KMh.
what do you think?

[fasteddy]

what kind model of car is it?

[weneakhborz]

it is 300TE 87'

here is what i have said about it before:

you can see that the pistone is missing,the pistone arm is not looking that good.the exhaust valve made contact with the pistone at very high RPM and cozed this damage.the pistone came out from underneath.



the engine bay cought fire and after buring all wires and plastic stuff it turned off by it self.but we repaired every thing and it is stell running as new.though the new engine isn't as powerfull as the old one.my old man sais "that is because you keep the pedal to the metal" 

[fasteddy]

Your lost of power maybe cause by a plugged cat. while the engine pumped oil into the exhaust during the explosion. Check for sufficient exhaust flow at your tailpipe. Also look for a hot cat.

[weneakhborz]

when we went to register our car in the saudi customs they said we have to remove the cat from the exhaust.