Borg Warner s256 NO COOLENT THROUGH TURBO????
Is this safe that the borg warner does not have coolant running through the turbo... i mean every turbo ive ever seen has this?? OPINIONS PLEASE!!
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We have people ask that question all the time. I find it rather funny because most turbos use to come oil cooled only and then coolant ports were added because turbo manufactures found people weren't changing there oil at the scheduled intervals. This was like 20+years ago. Now people have become so use to water cooled turbos the standard has become reversed.
Oil quality and durability is considerably better than even ten years ago making coolant ports a design the turbo manufacturer determines necessary. If the turbo is only oil cooled like the BorgWarner"'s then it is strongly suggested to have a air-to-oil cooler. This would be no different when upgrading to a larger turbo with coolant ports and making sure your cars coolant system is capable of handling higher temps from the new turbo. If not then a larger capacity radiator would be the proper supporting upgrade needed. The Honda guys know all about this.
Most street cars don't have issues with either as long as synthetic oil is used and changed when needed, car is at full operating temp before getting its *** kicked, and given at least 30sec of cool down when done.
Oil quality and durability is considerably better than even ten years ago making coolant ports a design the turbo manufacturer determines necessary. If the turbo is only oil cooled like the BorgWarner"'s then it is strongly suggested to have a air-to-oil cooler. This would be no different when upgrading to a larger turbo with coolant ports and making sure your cars coolant system is capable of handling higher temps from the new turbo. If not then a larger capacity radiator would be the proper supporting upgrade needed. The Honda guys know all about this.
Most street cars don't have issues with either as long as synthetic oil is used and changed when needed, car is at full operating temp before getting its *** kicked, and given at least 30sec of cool down when done.
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quicky4JR.
Evo Engine / Turbo / Drivetrain
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Feb 15, 2008 07:47 PM









