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Emma Watson and 2 E34's (Low Mount Turbo M50 Project)
I think a lot of tuners who do tune modern stuff don’t have enough fans for older cars. New stuff has 50a+ circuits for beefy fans that move a ton of air.
Duct work is just as important as cooling capacity, making sure the air doesn’t take the path of least resistance around the radiator cooling pack.
God damn it. Is this after street testing it or a second dyno session? The heat management is great, but man there has to be something majorly off with the tune settings. Maybe the motors timing is mechanically off? Not sure if it's easy to skip a tooth installing the timing chain on these motors...
Sorry dude, hopefully the head gasket was just your fuse like Northern said :(
Now working on controlling more of the radiant heat in the engine bay. Made a rough and dirty heat shield over the downpipe to give the transmission bell housing a break from the heat. Shielding also will help with heat moving up the fire wall. Adding Thermo cool lace wrap over the charge air pipes. 25% finished with the hot side pre intercooler. Post cooler is done. We will see if this product works.
3 hours per side to build new mounts and fit them to the chassis. Very time consuming, measuring distances, using levels, test fitting 3-4 times before tacking mounts to chassis rails.
I didnt go over 7-9 psi on the dyno run. IAT correction wasnt pulling much time because intake air was cooler, most likely due to the fans we had blowing right near it.
Lets start over now.
Cut out the first set of radiator mounts.
Shave the water pump snout another 1/2 inch.
Mock up, refit new mounts upper and lower.
Create several new custom coolant lines.
Completely re route oil return from pump to vanos plug at front timing case to oil drain bung I welded into the oil pan.
Install Zions Autosport radiator (which isnt all that bigger than stock)
I'm not sure how much boost you were running during that dyno session or what your compression ratio is but comparing your ignition table to mine, which is a lightly tweaked version of my base table, you have less advance and also pulling timing earlier for IAT and ECT. If you were locked in at 15° and seeing up to 230° ECT you're pulling 3°, and I don't know what your IAT was but it would retard the timing further. Retarded ignition timing will increase EGT, <12° of advance is pretty drastic at low boost, I'm not seeing that until around 18psi on my table. I have had serious under hood temperature issues with my turbo E34 but my downpipe is only mildly discolored. No dyno sessions though, the most sustained load my car has seen is in my 60-130 runs.
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