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Rb30et Super Budget Project R31

thrashworks

By thrashworks,
in Engines & Forced Induction

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thrashworks Enthusiast

thrashworks

Posted
Posted

Hey guys, just wanting some ideas and info on turbo charging my R31 gxe skyline.

So far i have:

R31 GXE 5SPD - $600

R33 RB25 TURBO - $50

VL TURBO exhaust manifold - $50

BOSCHE 040 pump - (borrowed from my rb20det ARGH31)

INTERCOOLER - choice between standard 32, rx7 or supra coolers.

The plan is to run the standard ecu/injectors and run standard boost (7psi). im not realy too afraid to kill the motor as its clocked up 328,128k's as it is and runs like a peice of shit anyway. Also has anybody heard of using RB20DET injectors on the 30ET? i have a set available if its not to much trouble to use them in the mix...

If anybody shows interest il post some pics of the process so they can see how dodgy and cheap ive made it :D:P

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https://www.sau.com.au/forums/topic/204734-rb30et-super-budget-project-r31/
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2BNVS Veteran

2BNVS

Posted
Posted

just get stock vlt injectors and vlt ecu, i have done pretty much the same except also have a small fmic which i sprayed black... i didnt wanna spend too much as i didnt think it was worth it, hence the budget build lol

bluegts Collaborator

bluegts

Posted
Posted
seriously... go here

www.r31skylineclub.com

There is more "ET on a budget" threads there that will suit your type of aims :stupid:

lol why were you awake at 3:00am on a Tuesday?? haha.

Anyway, my friend converted his commodore using the rb30 manifold, rb25 turbo + adaptor plate, vlt injectors & ecu.

Jack

thrashworks Enthusiast

thrashworks

Posted
  • Author
Posted (edited)
just get stock vlt injectors and vlt ecu, i have done pretty much the same except also have a small fmic which i sprayed black... i didnt wanna spend too much as i didnt think it was worth it, hence the budget build lol

Ive decided to go with the standard ecu because the motor already has the death rattles andi'll probably laugh when it dies. Do you know how many cc's the vlt injectors flow? also ive been thinking on maybe just a solder in chip for a vl-t in the standard ecu? I might end up running with a BA xr6-t cooler aswel, depending on how it fits up... im pretty much lookin at tarbinizing the car for under $1000 (including car price).

Brendan :)

Edited by thrashworks
thrashworks Enthusiast

thrashworks

Posted
  • Author
Posted
out of those coolers, I'd use the rx7 one if it is from a series 5.

otherwise, poopra cooler (7mgte I assume)

where did you get an RB25 turbo for $50?

the rx7 cooler is a series 4, i could always steal the 600x300x75 from my other skyline as its off the road at the moment anyway. as for the $50 turbo, you gotta love crackheads :)

KISIN Veteran

KISIN

Posted
Posted

I sold my 34 and bought a 31 daily, wanted to do a budget build and ended up with an r31 with r33 5 speed, rb26 head and shit loads more other stuff (all still to be put in)...i wish i could tame my modifying desire...

And now im thinking about buying a house instead of a GTR...wtf is wrong with me !?

Good luck with ur 31 though :)

Jmaac Proficient

Jmaac

Posted
Posted

Wouldnt be worth doing the upgrade without the VLT ecu and VLT injectors.

You can chip an n/a ecu to run VLT injectors but you will have no knock sensor (ears should be good enough) - this is a much cheaper option than buying the above for 300. Ebay generally has them for 100...

If you have a death rattle now then I wouldnt bother. Putting in a decomp. plate to lower the compression may also help here

thrashworks Enthusiast

thrashworks

Posted
  • Author
Posted
Wouldnt be worth doing the upgrade without the VLT ecu and VLT injectors.

You can chip an n/a ecu to run VLT injectors but you will have no knock sensor (ears should be good enough) - this is a much cheaper option than buying the above for 300. Ebay generally has them for 100...

If you have a death rattle now then I wouldnt bother. Putting in a decomp. plate to lower the compression may also help here

The death rattle doesnt realy bother me, ive got a few spare motors already, so if one goes bang, i laugh, then replace it :) . If the motor works well then i might even add my 20box... My daily driver is a 34GT-T so im just lookin for some laughs and to make ppl go wtf? when i take it to our local drag strip (1/8th mile track hahaha). and :) for the tip on the ECU's , i reckon that'l be the path i go down...

Brendan

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