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Turbo? Rate It..

Stealthynsa

By Stealthynsa,
in Engines & Forced Induction

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180bfj20det Community Regular

180bfj20det

Posted
Posted
how much boost?

I give it 2 weeks before it throws a rod :no:

It wont throw a rod unless you run big boost. I rekon 14 psi and youll be fine. Just get it tuned properly. That said, I dont know about the strength of the RB25DE bottom end, but I cant imagine it being weaker than NA SRs or CAs which can handle 14 psi on stock bottom end.

Go it!!!!

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Stealthynsa Proficient

Stealthynsa

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yeah i know the turbo can put out 30psi but give it time and ill work my engine to support my turbo...

this is only the start of things

and yeh i was just wanting someones opinion on my turbo...

do u think ill get much lag ect....

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Dale FZ1 Veteran

Dale FZ1

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RB25 front housing and core - ar63 rear housing - 30psi thrust bearing - gt30 front compwheel

this good setup?

I take it you meant 360 degree thrust bearing?

If so, you are talking about a plain-bearing cartridge? Not going into the whole plain bearing / BB debate - been done to death. I'm not against plain bearings, but I did go with a BB cartridge upgrade.

When you say GT30 impeller, are you aware there is a range of trim sizes available? Which one? Nismoid's question about a compressor map is justifiable - read the literature that Garrett put out about them. The maths is not that hard either - you do need to know what your power target and intended delivery is.

Cubes is also right about the hot side being generally the limiting factor - it has to be able to flow what the cold side is stuffing in, but also to drive the cold side efficiently.

I don't have any probs with your choice, just a matter of knowing what you want it to do. FWIW, The Mafia and Jmac have both used a similar cartridge to yours for upgrade. Their posts seem to indicate satisfaction, even if others disagreed at times. Do a search and see for yourself.

I believe the RB25DE runs 10:1 compression. That should point out the immediate limitation of your intended match: any significant boost will likely lead to an early failure. Otherwise use a small-ish turbo and get it to crank out significantly more torque than the N/A engine. Much the same as Nissan did with the DET. Might actually be cheaper and just as effective to buy/install a DET engine in that case.

cheers

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The Dan Grand Master

The Dan

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People are safely running 14 psi through the DE bottom ends on turbos of similar size down in Melbourne. Making 260rwkw. I have not seen it, however, but this is what I was told. Running more than this would be detrimental to your engine's health. That is also assuming the bottom end is not already "TIRED".

I don't think you will reach that hp figure but good luck with it anyway.

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