Suction pipe for rb25 turbo.

[SeanR32GtSt]

I bought a hypergear rb25 turbo beginning of this month and am waiting for it to get shipped to the states. I’d like to replace the current suction rubbery oem crappy hose that it has right now. I fear right now it might be getting partially collapsed under WOT. I found this one here http://www.performance-wise.net/page53.htm

 

anyone else have experience with these?

[iruvyouskyrine]

Get something custom made to suit. It will always have a better fit and finish.

[hardsteppa]

^^shithouse. Bad fit, overpriced. Just get a stainless bend, and weld fittings onto it( they're common sizes), and use silicone joiners for pipe sections. That way you can adjust it sectionally to get exactly the right angles/positions, otherwise one solid long pipe will be a PITA to fit right. Can get it all off ebay cheap, and then just replace single piece if making changes in future, rather than having to re-do whole pipe.

Example of mine is shown here

https://www.sau.com.au/forums/topic/475731-r33r34-performance-items-some-brand-new-gktech-tein-apexi-nismo/

[SeanR32GtSt]

5 minutes ago, hardsteppa said:

^^shithouse. Bad fit, overpriced. Just get a stainless bend, and weld fittings onto it( they're common sizes), and use silicone joiners for pipe sections. That way you can adjust it sectionally to get exactly the right angles/positions, otherwise one solid long pipe will be a PITA to fit right. Can get it all off ebay cheap, and then just replace single piece if making changes in future, rather than having to re-do whole pipe.

Example of mine is shown here

https://www.sau.com.au/forums/topic/475731-r33r34-performance-items-some-brand-new-gktech-tein-apexi-nismo/

It’s too bad you sold yours. 

[hardsteppa]

i sold one, but have another one for sale now - the one pictured later in the thread. Postage to the US might be a bit though mate, might be better locally made? Really only need the fittings welded on  (if you don't have a welder that is) the rest you can make at home.

[SeanR32GtSt]

There are welders everywhere but problem is trying to track one down that’s not too busy. You’re Probably right on the shipping. 

[hardsteppa]

i now run a 3.5 inch pipe, had 3in originally. It has better response; if yr going to make one, i reckon just go with 3.5in first up. 

[SeanR32GtSt]

6 minutes ago, hardsteppa said:

i now run a 3.5 inch pipe, had 3in originally. It has better response; if yr going to make one, i reckon just go with 3.5in first up. 

Is 3.5” not overkill on a stock rb20 motor but high flowed rb25 turbo?

[hardsteppa]

No, the more free flowing you can make intake air, and the more available "on tap" the better.

[Ben C34]

3 hours ago, hardsteppa said:

No, the more free flowing you can make intake air, and the more available "on tap" the better.

You wouldn’t be suggesting putting a tap in the inlet system? That is preposterous good sir. 

[hardsteppa]

Yeah man, water injection taken to the extreeeeeeeeeme

[GTSBoy]

Anywhere up to 50% of fuel flow is fine.