No. When I do clean it it’s with an air compressor.Wow...
Have you cleaned the engine bay with anything that might have been acidic?
Steve
Yeah man...that kinda sucks...No. When I do clean it it’s with an air compressor.
my old car I would walnut blast any carbon build up if I had to remove a part during a fix/install. But I Havnt down that with the Supra.
You're referring to the OP, correct?Just curious, where are you from?
I Havnt touched the manifold or messed with it or the turbo. I also so no “play” in any of the assembly.As an aside, those factory turbo collector studs those are probably use-once items intended to be replaced with new ones (along with a new gasket of whatever design is there) any time the collector manifold is removed. I could be wrong but it is probably what the factory manual will recommend. This is, I believe, also recommended with factory exhaust studs on a JZ engine.
For what it is worth, even the nearly brand new ARP exhaust studs on my 2JZ engine that has little more than 7k miles on it developed some rust due to the heat after enough time, miles and heat/cooling cycles. There is no reason to mess with them until such time as the exhaust manifold ever needs to be removed. I am sure it has to be the same case here.
At such time a heavy spray and coating with PB Blaster penetrating oil would be recommended along with allowing that stuff to soak overnight into the studs and threads in order to better facilitate breaking the nuts loose. I have occasionally had to use a stud extractor tool on extremely old studs that have sat in place for 20+ years.
Basically the exhaust studs on any engine take a lot of abuse. They can look very ugly over time and may require some solvent and a couple of tricks to get them out of there if they've aged enough but I see nothing abnormal in those B58C photos. It looks like a very clean new-ish factory engine to me.