Jump to content
SAU Community

JUN Plenum has arrived!

600hp

By 600hp,
in Engines & Forced Induction

 Share

Recommended Posts

MattSR Community Regular

MattSR

Posted
Posted

I disagree totally. Do you think JUN havent thought of this already? old Mr tanaka didn't get to where he is now by being secretive and paranoid... obviously when you sell a product, the R&D that has gone into it is now out in the public domain, and is free to be copied... Lots of other people have these plenums too, and even if some chinese guy does copy it, he doesnt know what the engineer was thinking when he designed it, so the copied product will never, ever be as good as the original.

It reminds me of Mario when he first started out 4-5 years ago with GTR700 - he wouldnt show photos of the fancy cooling system that everyone now knows about. it still doesnt mean that people know how it works, or how to do the mod properly.

just my 2c..

Cheers,

Matt

Gav Mentor

Gav

Posted
Posted
The reason is if i show you whats inside and someone copies it it would be worth a lot less than i paid for it.Also if JUN has done all the testing would it be fair for some chinese guy to copy it?

I would think that's not really the "spirit" of the forum. I'm sure anyone that want's to make money from copying the design would not rely on low res photos from this forum and would just buy one from Japan.

Along your line of reasoning, I paid a lot more a couple of years ago for my '93 GTR than people paid up until recently for 15 yo imports. I also paid a lot more for my genuine HKS terb manifolds than people pay for local or Chinese copies. But that's my choice.

Out of interest, I'm also using a single throttle conversion myself and am happy for anyone to look at the details of the plates and the custom throttle body. A hotly debated topic but personally I think it's an advantage for a high revving, standard 2.6L with high lift cams. I would imagine a single throttle body also helps with a map sensor type ECU setup. But again, my choice.

Beer Baron Grand Master

Beer Baron

Posted
Posted
The reason is if i show you whats inside and someone copies it it would be worth a lot less than i paid for it.

I don't think that's really true. even if it was, you didn't buy it for an investment. it's only worth to you is in the performance gain it can give you and this 'value/worth' won't be diminished at all by someone else seeing it (even if they did copy it). ie. you didn't buy it for it's $ value. you could argue that your performance advantage over someone else could be reduced if they saw it, but that's not true as it's not a one-off that only you know how to make, anyone can buy one.

anyway, it's up to you whether or not you want to show people. it certainly looks good from the outside. enjoy.

600hp Proficient

600hp

Posted
  • Author
Posted

Thanks guys.

as for R31Nismoid what is it that you want?

I'll give a complete list of mods and at least 4 dyno sheets with all runs over 290AWKW.

Also GAV what sort of mods have you done on your car. and did you notice an improvement with the new plenum down low or was it all up top.

Cheers.

600hp Proficient

600hp

Posted
  • Author
Posted

i'm not sure on an exact price as we are always getting multiple things done at a time.

As for a better price give CRD a call.

one little bad thing is that they take about 3 months to get once they are ordered, as they only make them once the money is in.

power we have no real idea as no one with a set up like ours has done it before.

I'll post up a dyno sheet with the new figures once its all installed.

Gav Mentor

Gav

Posted
Posted
Thanks guys.

as for R31Nismoid what is it that you want?

I'll give a complete list of mods and at least 4 dyno sheets with all runs over 290AWKW.

Also GAV what sort of mods have you done on your car. and did you notice an improvement with the new plenum down low or was it all up top.

Cheers.

All up top - but the engine was/is set up for high revs anyway (high lift cams, extensive porting, big low mounts).

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      I refreshed the OEM injectors with the kit and connected it up. It now ideals okay even with the IACV removed. Driving still has the same cutoff issue like the 550cc injectors so the issue is somewhere else. I bought FPG's Fuel Pump Hanger. I will be installing it next, but it is not as straightforward as I thought it was with my limited wiring knowledge and no instruction on the specific model I purchased (FPG-089). I also got the incorrect billet clamp as I could not find info on the OEM sizing.
    • MBS206
      Leaking Rear Subframe Bushing?

      By MBS206 · Posted

      Stop looking at the garage floor, and turn the radio up a bit louder if there's any strange noises...
    • GTSBoy
      Unknown sound similar to BOV on positive boost with partial throttle RB26

      By GTSBoy · Posted

      No. Turbo shuffle and surge/flutter are not the same thing. Specifically, on a GTR, turbo shuffle has a definite meaning. On a GTR, the twin turbos are assumed to be the same thing and to operate the same way, exactly. In reality, they do not. Their exhaust sides are fed and exhaust a little differently, to each other. Their inlet sides are fed and exhausted a little differently, to each other. Consequently, when they are "working" they are often at slightly different points on the compressor map compared to each other. What this means, particularly when coming on boost, is that one of them will spool up and start producing extra flow compared to the other, which will put back pressure on that other compressor, which will push the operating point on that other compressor up (vertically). This will generally result in it bumping up against the surge line on the map, but even if it doesn't, it upsets the compressor and you get this surging shuffle back and forth between them That is "turbo shuffle" on a GTR. It is related to other flutter effects heard on other turbo systems, but it is a particular feature of the somewhat crappy outlet piping arrangement on RB26s. There are plenty of mods that have been attempted with varying levels of success. People have ground out and/or welded more material into the twin turbo pipe to try to prevent it. Extending the divider inside it works, removing material doesn't. There are aftermarket replacement twin turbo pipes available, and these exist pretty mush purely because of this shuffle problem.
    • Duncan
      Leaking Rear Subframe Bushing?

      By Duncan · Posted

      You can temporarily* use lock collars to keep it in place until you can do the bushes, back the nuts off, slide them in, snug back up. *temporarily is often for ever
    • nouveau_poor
      Unknown sound similar to BOV on positive boost with partial throttle RB26

      By nouveau_poor · Posted

      Thanks for the quick reply. To be clear, when you say turbo shuffle do you mean turbo flutter "stustustu" or referring to something else? I had thought they were the same thing. When I wrote the post my intention was to say it wasn't a flutter/compression surge sound. My understanding was that a flutter sound would be occurring when throttle is released, whereas I can keep the throttle in the same position for this noise
×
×
  • Create New...