If you're going to be paying for a downpipe/ext wastegate and headers go directly to the tangential 4 bolt housing.If you were building scratch headers for a Turbo6 in a custom application (like I'm probably going to do eventually) which would you recommend using as the flange? I'm guessing 4 bolt is going to win due to wider selection but I could very well be wrong.
Guess I need a new post for this oneWow! Now a question I have not seen asked here is what about the difference in flow from a .63 housing to the .83 or is .85 on the 3 bolt
Sorry if this is off topic I was just wondering as Im looking at a new BB Turbo not wanting to step up to the 4 bolt flange. Maybe it will help others as well. If I need a new post just let me know.
At what HP and boost levels is 3 bolt a true stop? Idk......that far we haven't gone yet.
900+ rwhp can be achieved on a 3 bolt that I am aware ofAt what HP and boost levels is 3 bolt a true stop? Idk......that far we haven't gone yet.
Not necessarily there are alot of things that can effect backpressure and just cause a car is 1.1 doesn't always mean the car is faster that way.having enough exhaust gas volume comes into play with larger exhaust housings and you can slow down with the bigger ones.just some food for thought as individual combo's should be taken into consideration.the matching of the parts and tune in key.Back pressure of the 3 bolt guys is around 2:1 or higher at around 24-30psi....where as 4 bolt guys are floating around a much nicer 1:1 / 1.3:1.
Yes, but at a reduced efficiency. There is always a balance on matching the turbo to your setup. Bigger isn't always better.900+ rwhp can be achieved on a 3 bolt that I am aware of