greedy plenums

[RBVS]

im just interested to know if up grading the stock plenum on a rb25det is a popular upgrade in japan or do they hold strong to the nissain engineering of the stock iteam?

[SmItLeR]

usually when chasing big hp - more so 500+ you'd tend to go Greddy plenum as they flow better than the stocky

there are a few 400+hp 33's (rb25) running around with stock plenum and making that power quite easily (GT30 love )

[Parag0n]

Seen GTR Drag cars with T51R's strapped on run down 9's and use the stock plenum.

Meant to be a great Nissan item, only replace it if you want something like a nice big Trust shiny thing if you were building a show car/dyno queen

[Rezz]

SmItleR, Paragon... you didn't answer his question.

The Greddy (Goo-red-ee ) intake plenum is a fairly popular conversion in Japan. I wouldn't say that *everyone* considers it, for example, a 400ps ECR33 has the Greddy plenum, yet a 450ps HCR32 doesn't (stock intake)... go figure.

I guess it boils down to what the person wants to do with the car. The ECR33 has a better chance of 550+hp with the RB25DET, therefore you're more likely to see the Greddy plenum on RB25DET equiped cars. Well, lets just say 50% of the medium-hard tuned RB25DETs have the Greddy plenum (or similar), and less than that for the RB20DET in Japan. Going out on a limb there, but you get the idea...

[Evo_Lee]

They do change these items but I'd say it would be the last thing to change if they do...plus they cost a fair bit. One would go for a larger throttle before doing the plenums.

Hell the Evo 4G63 plenums is great, demo cars are pushing out 600ps with them. We only touch the exhaust manifold side.

[Blitz]

Of the benefits available when fitting the Greddy unit to an RB25, additional power isnt really one of them.

On the more heavily modified cars particularly, as Rezz said they are common but I believe this is more for the fact they greatly simplify the intercooler pipework, removing the notorious U-bend and requiring a much shorter pipe between the cooler and the intake plenum itself

[RBVS]

thanks heaps guys. yea was looking for info as, with cams for the rb25 people have pick up on the common jap commbo so i am looking to do the same but with the greddy plenum so to speak. Its a part that doesnt gain on the dyno but could make a quicker car buy response and heat soak just interested to see if its popular or worth while on the jap scene.

What i can gather is it is but the mod takes place toward the end.

im realy aiming for 380rwhp but am coming across alot of small problems including a vacum leek that cant be found and looks like the plenum will come off and new gaskets and hoses installed. Loking at the price of these plenums they seem to have droped and i could get one for a 1000 or just under, so now would be the time but ive still got stock cams and exhaust manifold which seem to be done befor a plenum upgrade.

[StuiE]

 

Greddy (Goo-red-ee )  

I've always wondered how to say that