Rb20/25 Inlet Manifold

[beltdriven31]

Just a quick question, are rb20 inlet manifolds the same as 25s where they split in half?

Could you say put a rb20 top onto 25 runners

Reason I ask is there is a well made forward facing plenum made for rb20 runners, I want to know if it will fit my 25 runners on my rb25.

[Ben C34]

Wouldn't that piece of silicon hose suck shut?

A

Did you just call that thing well made?

[hardsteppa]

Agreed...do you have a pic of the well made item you're referring to you can put up instead?

[beltdriven31]

I believe it to be well made, it supported 380hp on a rb20 and it Utilises the standard runners which are well known to give more torque than the forward facing Greddy copy style of which I have one.

So yeah just wanna know if the plenum will bolt onto my 25 runners, just curious.

Cheers

[beltdriven31]

Wouldn't that piece of silicon hose suck shut?

A

Did you just call that thing well made?

Suck shut???

We are in forced induction are we not?

[GTSBoy]

Suck shut???

We are in forced induction are we not?

Hahhahhahha. I WAS about to say that I thought Ben had dropped a clanger, then I saw where the throttle body was mounted and I laughed, pissed my pants and shat myself all at the same time.

[beltdriven31]

^^ point well made... I'm only looking at pics I've been sent, came off a running car so not sure if it's silicone hose what.

Trivial shit aside can anyone answer my actual question

[iruvyouskyrine]

I have seen many terrible plenums, but this one takes the cake. What a f**king abortion.

And to answer your question. No.

[scotty nm35]

Oh no... Take that off before you kill someone.

[GTSBoy]

I'm pretty sure that the plenum for RB20s has #5 & #6 offset from the 1st four runners, and the R33 RB25s are in a straight line. So, no, I don't think you can use it on the "wrong" engine.

[Dobz]

Plus the inlets on the 20 can only fit peas through. The silicone hose is a bad idea because if that happens to blow off you instantly have a run away engine on full throttle.

[Ben C34]

The easy way to tell would be check if the 20 and 25 gasket is the same. Which it isn't.

But that manifold is a joke.

And I wouldn't call that piece of hose sucking shut trivial shit either. Its a fundamentally flawed design, and you could actually blow the throttle body off the manifold, which is pretty special.

[beltdriven31]

Thanks

Not my manifold and I was just curious to know as I did not have the manifold in my possession just seen pics.

Thank you for your valid opinions.