- Joined
- Oct 21, 2015
- Messages
- 233
Hey guys, so I have an 04 Miata turbo. Engine is custom built, forged internals, nice Borg Warner EFR6258 Turbo. It has 4,500 miles on the engine, and this is my second Blackstone analysis (first also in this shot). Generally it looks like things are improving with the metal contents of the oil, but there is still Silver showing. Blackstone said some engine bearings use Silver, but I called ACL, the manufacturer of my bearings, and they told me their Race bearings do not contain any silver in them. I am just trying to figure out where it could be coming from, and if it's something I should worry about, or just leave it alone? Thank you guys!
Here is a list of the aftermarket internals in the engine as well as the turbo system, perhaps some of these have some silver somewhere. I'm only listing the components inside of the engine that are somehow connected to the oil system.
Eagle H-Beam Rods
Wiseco 83.5mm 8.5:1 pistons
Boundary Engineering Street/Strip oil pump billet
ARP head/main studs
ACL Race bearings
Supertech Valve Spring kit
VICS delete
EGR block plate
BorgWarner EFR6258 turbo -1500
AN-4 feed
AN-10 drain
Here is a list of the aftermarket internals in the engine as well as the turbo system, perhaps some of these have some silver somewhere. I'm only listing the components inside of the engine that are somehow connected to the oil system.
Eagle H-Beam Rods
Wiseco 83.5mm 8.5:1 pistons
Boundary Engineering Street/Strip oil pump billet
ARP head/main studs
ACL Race bearings
Supertech Valve Spring kit
VICS delete
EGR block plate
BorgWarner EFR6258 turbo -1500
AN-4 feed
AN-10 drain
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