I am at a loss with this 87 300d. It makes 0-60 in about 14-15 seconds which I am fine with. It is an old car that's 30 years old amd don't expect it to run like a new motor. I think it's because the transmission shifts a little late wjen you get on it, but otherwise it shifts smooth and on time. Again it's old.

I checked compression and have 350-360psi across the cylinders, adequate fuel, clean fuel filters. I checked the crossover across the valve cover and it Doesn't look too sooty inside the manifold. I checked the alda line and it's clear. The turbo spools up at like 1600 and it pulls good. But if I'm on the highway and nail it WOT it Doesn't really pull and creeps. I'm not sure if that's how this single cam 12v is supposed to perform. I'm used to dohc 24v om606 engines that pull like a freight train.

This car pulls torquey off the line but little up top.

Any thing else I should check? Will removing the alda possibly resolve the lack of top end power?

I figured if all the engine bay filters dont look dirty, the tank filter is probably fine. I also have little chain stretch and good IP timing.

At a loss. Ideas.

__________________
Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k