RubyRedBoost
Traded EB old name New GT
- Joined
- Dec 10, 2014
- Threads
- 10
- Messages
- 619
- Reaction score
- 181
- Location
- Fort Worth
- First Name
- Josh
- Vehicle(s)
- 2015 Guard GT with PP
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Asked a knowledgeable turbo friend about the differences and here is what he said:Adam, are you able to offer pricing on both and let people choose BB vs JB? For those with budget vs those with deep pockets?
I prefer BB myself, but for the price difference (usually around $500.00) the benefit's don't outweigh the cost. For me however the cost doesn't outweigh piece of mind when you think "I bought the better turbo". I usually just buy BB for that reason.Asked a knowledgeable turbo friend about the differences and here is what he said:
BB will spool a tad faster
BB is more reliable as it can support higher shaft rpm, generates less heat and requires less oil to lube.
Journal bearing is a metal on metal sleeve that "floats" on a pressurized oil film that has more heat and supports less rpm as it starts to deform, needing more oil to lube and cool.
In his opinion BB has a longer service life.
It will probable come down to what the cost difference between BB/journal.
That it is, all cores are prepped and the final operation of machining on the end tanks is being finished today!Hope the intercooler is still on track to ship this week... It's really warming up here!
I agree with most of what you said, but you'll see most, if not all OEM's using journal bearing turbos on their cars. I understand that most of it is a cost thing, in that the extra cost of adding ball bearings to a shaft would cut into their profit margin, but they still use the JB shafted turbos.Asked a knowledgeable turbo friend about the differences and here is what he said:
BB will spool a tad faster
BB is more reliable as it can support higher shaft rpm, generates less heat and requires less oil to lube.
Journal bearing is a metal on metal sleeve that "floats" on a pressurized oil film that has more heat and supports less rpm as it starts to deform, needing more oil to lube and cool.
In his opinion BB has a longer service life.
It will probable come down to what the cost difference between BB/journal.
Not following this one....?Using water to cool a turbo is designed to prevent bearing coke.
There are watercooled turbo's on the market (PTE is not). The watercooled factor is to promoted thrust collar and bushing/bearing health. Unfortunately some cars coolant and oil temperature are the same and it doesn't help that much, or any at all. When the turbo is pushed it generate heats that will have its way with water or oil regardless. I like running water cooled turbo's on Subaru's and Honda's because their coolant system is pretty efficient and it definitely aides in bearing health.Not following this one....?
Providing that your center housing allows you to do so. Not all turbos do (Garrett's have that option, but some other's don't as MAP has stated).Using water to cool a turbo is designed to prevent bearing coke.
I feel ya on that one...Lolgreat now i have to change my pants...thanks a lot.