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Rb30det /25 Or /26 Head?

R33Gtst Driver

By R33Gtst Driver,
in Australian Capital Territory

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R33Gtst Driver Enthusiast

R33Gtst Driver

Posted
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Posted (edited)
for big power the RB26 head is better. but you also need a new wiring loom and possibly ecu depending on what you go with.

i hope you have set aside 20k+ for the build.

yeah i was thinking the same but then i seen them built for $6000NZ here http://www.dodsonmotorsport.com/index.php?...l-products.html or i could get one for $6000aus from an unfinished project sale atleast i would have most of the work done i will most likey change a few things to make it stronger what do you think deal or rubbish?

Edited by R33Gtst Driver
TiTAN Grand Master

TiTAN

Posted
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call and ask them the price for that engine. there is no way you are going to get a forged bottom end, full turbo setup and dry sump for $6k NZ the parts alone are worth double that and then some.

for that kind of money expect a bare stock internal RB30DET long engine.

R33Gtst Driver Enthusiast

R33Gtst Driver

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call and ask them the price for that engine. there is no way you are going to get a forged bottom end, full turbo setup and dry sump for $6k NZ the parts alone are worth double that and then some.

for that kind of money expect a bare stock internal RB30DET long engine.

all the info i foun on prices for parts on that engine build were all atleast a few years old i figured the price might have dropped or they just didnt use the best parts but your probly right which sucks

Edited by R33Gtst Driver
Sinista32 Grand Master

Sinista32

Posted
Posted

IMHO -

- Read the SAU forums re the build.

- Speak to a mechanic who's built more than one, preferably many. Get a written/detailed quote.

- Chat at length with someone who is driving one and go for a ride.

- ask the owner the FULL cost. This will vary from the quote you get.

tridentt150v Grand Master

tridentt150v

Posted
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dollar for dollar, I reckon a street car is better off with the 25 head with VCT. You get the benefit of all that extra torque coming on progressively and earlier. And for a road registered street car you couldn't want for a better package. It's the way I was/will be going. with WMI and a forged unit and the right turbo you've got to be good for 350-450rwkw and thats healthy for a rwd.

TiTAN Grand Master

TiTAN

Posted
Posted

while he already has a 25 head for 600+hp (which is what he seems to want) a 26 head is a far better starting point than a 25 head as you can fit much higher lift cams due to the solid lifters as opposed to spending lots of money to convert the 25 head to solid lifters.

R33Gtst Driver Enthusiast

R33Gtst Driver

Posted
  • Author
Posted (edited)
by your sig you appear to have an RB25 head already. check out the RB30 sticky and see what power people are getting. a 25/30 will provide way more power than a rwd can handle so the extra cost of an RB26 head is not bang for $.

thanks ill take a look and i dont know how good my current motor is internally it has already been cooked badly once which is why im shopping for new engine rather then taking a chance on it and i thought it was better off starting with rb30det because either way i was gonna spend a lot forging it

while he already has a 25 head for 600+hp (which is what he seems to want) a 26 head is a far better starting point than a 25 head as you can fit much higher lift cams due to the solid lifters as opposed to spending lots of money to convert the 25 head to solid lifters.

i was thinking along similar line based on the info i have found on the net

Edited by R33Gtst Driver

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