RB manifolds

[Sabu707]

Are the exhaust manifolds for the RB20 and RB25 interchangeable?? Because if you bought a manifold from HKS, its interchangable with either engine. So wouldn't that mean that the exhaust ports on a 25, and 20 are lined up ?? Of course all manifolds aren't the same and they're all going to be made with different materials.and different thicknizes,but shouldn't they fit with one another(20 and 25)??

For all you smart asses,I search this and nothing came up for me !!

[Yellow4g63]

same size on the exhaust ports for 20 and 25. 25 manifold will bolt up to 20 and 20 to 25.

[Eikon]

I want to be a smart ***!

I am a total noob with turbo's, but... Don't Rb20's have T3's and RB25's have T4's?

[OpeLok]

I want to be a smart ***!

I am a total noob with turbo's, but... Don't Rb20's have T3's and RB25's have T4's?

My turn to be a smart ***.... Does this look like a T3 to you???

It has a 4 bolt footprint but its a T25 turbo with special RB characteristics...

[BoostFab]

stock form...no both are t28 turbo's

[OpeLok]

well its damn tiny either way!

[Slo_240sx]

My turn to be a smart ***.... Does this look like a T3 to you???

It has a 4 bolt footprint but its a T25 turbo with special RB characteristics...

Hey you quack, you measure the inner diameter stupid! LoL J/k.

[SillyRB]

My turn to be a smart ***.... Does this look like a T3 to you???

It has a 4 bolt footprint but its a T25 turbo with special RB characteristics...

IT has a T3 flange

stock form...no both are t28 turbo's

FALSE although they are not T28 turbos...It has a T3 flange, and a T3 compressor with a T28 turbineSO it is a hybrid so to say.....

[BoostFab]

Quote »T28 turbine[/quote]^^^ like i said, it's a t28. they use the same foot print (flange) as the t3. have you seen a z31 turbo??! that's nissan t3 turbo. put the two together you'll see.