Hi- mount or low mount

[PALADN]

Guys im looking for a new manafold to put on my RB20det r32 gts-t. Now is hi-mount of low mount better? what are the advantages & disadvantages? also it has to fit a HSK2530 turbo. are these external or internal waste gates? also whats better internal or external gates?

[RyanN]

the HKS 2530 turbos i believe have internal wastegates. internals aregood for smaller turbos, external wastegates are better for high-powered bigger turbos, an external wastegate allows for more exhaust gases to be vented (ideal for big boost applications). I've heard that a high mounted turbo is best, something about the oil doesn't gather within the turbo or something. A high mount gives you a little bit more room for a bigger turbo for example.

[PALADN]

How can you have different boost settings with an external waste gate? does that mean you have to manually change it? and hight mount would be the go you think?

[RyanN]

go high mount. An external wastegate has a bigger valve which would vent alot more unwanted exhaust gases compared to usually a rather small internal wastegate, when you deal with more boost and power youre going to need an external.

[PALADN]

yeah but with an external waste gate how do you control the boost levels? do you set the springs for max psi (16-18psi) and then the bov controls the rest?

[RyanN]

with the boost controller, works the same way as an internal exept its external to the turbo and alot bigger.

[Sydneykid]

I would always got for low/rear mount in lieu of high/front mount as it puts the turbo in a better weight distribution position. Lower and rearward is definitely an advantage to the handling and braking performance. Plus it doesn't scream DEFECT, like a big shiny front mount in your face.

[psybic]

yeah but with an external waste gate how do you control the boost levels? do you set the springs for max psi (16-18psi) and then the bov controls the rest?

BOV does not control boost.

External waste gate has less creep because of above mentioned reasons.

Top mount is easier to get at.