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Rb26 Head Or Stay 25

51NNA

By 51NNA,
in Engines & Forced Induction

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Bsa Mentor

Bsa

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Posted

You're the 2nd person to say that recently

But I recall playing with on and wasn't even close?????

Maybe slight differences is some of the rear drive sumps

Or the guy had the wrong sump lol

Rb20 and 30 sumps won't fit from what iv heard

wolverine Grand Master

wolverine

Posted
Posted

25 sump does fit the 26 block but a notch has to be made for the pickup I did it last week

Blake was it a Stagea block? I know they are pre-drilled for both sumps. You do need to notch out around the AWD pickup location to get the RWD sump on and then you can modify the oil pickup but cutting and brazing it to the right angle and location.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

sorry for the late reply, was playing footy, f**k id be lost without you guys haha, thanks for all your input!!!! My engines a S2 RB25 with around 80k on the clock, had a RB20 that put no' 4 and 5 through the block, holy f**k it went bang! lol also VCT isnt currently connected, because im awesome at forgetting things when i built the wiring loom i forgot the vct and wiper motor hahaha, but ile have that sorted, i played with it on the dyno and gained 40hp in the mid from just connecting it, mind you it went too about 14:1 =O, my plans were a G3 Turbo from HyperGear, but i spoke too someone who knows more about turbos then most tuners in australia lol, going with the GTX30/76 and im not going to go the FFP, just hate the look of the stock manifold

Are you wanting more or less than 300rwkw on PULP? The GTX results really haven't been stellar on PULP and sub 20psi.

If you want 300rwkw or less on PULP get a run of the mill GT3076, tried and well proven for that range. Cheaper as well.

The GTX you really need to stuff more boost into it, and E85. Which will see you to 350rwkw easily with 7500rpm, but that's going beyond stock motor limits realistically if you want to last for a reasonable amount of time

Bsa Mentor

Bsa

Posted
Posted

Blake was it a Stagea block? I know they are pre-drilled for both sumps. You do need to notch out around the AWD pickup location to get the RWD sump on and then you can modify the oil pickup but cutting and brazing it to the right angle and location.

Na it was a 32 gtr motor I just tiged all the pipe to make a pickup but I'm not sure on if the pickup has to be changed if you look on my build thread there are photos of it on there

51NNA Community Regular

51NNA

Posted
  • Author
Posted (edited)

Are you wanting more or less than 300rwkw on PULP? The GTX results really haven't been stellar on PULP and sub 20psi.

If you want 300rwkw or less on PULP get a run of the mill GT3076, tried and well proven for that range. Cheaper as well.

The GTX you really need to stuff more boost into it, and E85. Which will see you to 350rwkw easily with 7500rpm, but that's going beyond stock motor limits realistically if you want to last for a reasonable amount of time

I was considering just going a GT30/76, but im going to be running E85 and possibly WMI aswell so fingers crossed i wont have too run much over 18psi and i defently wont be running over 20psi lol, ile also be buying the 6boost twin scroll manifold, .82 twin scroll exhaust housing on the GTX 30/76 and a plazman manifold, 1000cc DI injectors twin 300lph fuel pumps and eventually when the S2 RB25 pops ile just buy a neo and build it, i figure ile regret buying just a GT series later down the track when i want more power.

Edited by 51NNA
51NNA Community Regular

51NNA

Posted
  • Author
Posted

If it was just a street car id get one of the Thailand made turbos from kando or hypergear but im not going too risk it, 1600 for a billet wheel hypergear or 1750 for a garret, what would you go? lol

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