21cm housing
#1
21cm housing
Are there any marking on the turbo housing to indicate what size it is? With out taking it apart. I’m trying to figure out what size mine is I know if its stock it’s a 21cm housing. Is a number cast on it that says “21” in the same place as where the 16 cm housing has it cast? It does not look very large. Pictures?? Truck 91 intercooled
#3
Registered User
Re:21cm housing
In '91 on the aftercooled trucks the stock exhaust housing was a 21, so Blueturbo would have a 21 housing stock. The numbers are on the housing, it is just hard to see. If you have a 16 housing, though, for comparison, you can see that the 21 is physically bigger.
#4
Re:21cm housing
Housing was a 21cm I changed it out this weekend for a 16cm. I got a good deal by digging, ($75). What is interesting is how much quieter it made the truck. (Open exhaust no muffler) than with the 21cm.
#5
Registered User
Re:21cm housing
Well, more exhaust energy is getting turned into manifold pressure -- a good thing all around.
I bet the turbo whine is louder, though. ;D
I bet the turbo whine is louder, though. ;D
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