Rb30det /25 Or /26 Head?

[R33Gtst Driver]

im planning to get/build a RB30DET

just wondering should i go with a 25 head? or a 26 head? been readin up on it for a bit just wondering wich was the better option for big power?

[TiTAN]

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.

[R33Gtst Driver]

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 September 24, 2009 by R33Gtst Driver

[TiTAN]

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]

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 September 24, 2009 by R33Gtst Driver

[Sinista32]

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]

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.

[Scooby]

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 $.

[TiTAN]

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]

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 September 25, 2009 by R33Gtst Driver

[GT-R32]

http://hioctaneracing.com.au/news_RB30.html

[TiTAN]

you will probably find http://proengines.com.au/ has the same package for less dollars and greg is local.

[GT-R32]

you will probably find http://proengines.com.au/ has the same package for less dollars and greg is local.

Sweet.

[R33Gtst Driver]

you will probably find http://proengines.com.au/ has the same package for less dollars and greg is local.

thank you

[sharon333]

Thanks for the link.