Jump to content
SAU Community

Recommended Posts

Just requiring info on this build-up, wat is required to make them suit together and is it a good move, would i be expecting good performance.

Reason i ask this is because i can get them fairly cheap cheap, i've inspected them both, and there both in good order, no bad wear anywhere.

The Head is only an N/A Head, what is the difference between them and the turbo head.

Another thing, how do i prove it's an RB25 head and i don't have an RB20 Head

Cheers...

Link to comment
https://www.sau.com.au/forums/topic/60276-rb25-head-rb30-bottom-end/
Share on other sites

if it came with the cam cover, it will say RB25 or RB20 but i assume its not otherwise you would have seen it already

but take a look here:

http://users.esc.net.au/~cobra30/twincam.htm

the bloke who did this rb30/25 conversion said that he knows the head to be rb25 because he injected oil into the combustion chamber using a syringe wich has cc measurments on it. So he just kepts track of how much he has injected and when its full you have the capacity, but that might not help either, because you won't be able to inject oil until you buy it.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • The issue now is the 'fuel cut' while driving, and when it happend, it does not stall. This, I did not test the fuel pressure while driving as I cannot with a fuel pressure gauge. I do have Nistune logs, yes. I have also replaced the MAF Sensor.   Also related to the FPG Fuel Hanger – I just realized that I need a Deutsch Crimp Tool to crimp some cables for the FPG Fuel Hanger. Need to purchase additional cables as the kit only included 2, which are for the float. FPG has not responded to my emails so far since purchasing. I thought about taking it to someone and having it done professionally, but I am reluctant since everyone I took it to messed up in some way.  
    • There's a good German place in Brisbane if youre up for the drive 😛
    • The German place in Cabramatta was rock solid, fresh pretzel cooked to order back then. Then it went all quiet, after all the poker machines were removed, then I believe it closed for good. I did drive past the other week and noticed outdoor lighting a big screen, but no idea what is there now.  
    • Yeah I suspect even if you hold airmass per cycle/cylinder constant if you get too far away from stock you're still going to have problems running the factory tune within the bounds of the factory load scale. Cams, different displacement/rod ratio, etc. I'm just lucky that the GTIII-SS with wastegate boost + CA compliance cats is pretty much equivalent to stock turbos. When I have actual space I can finally get it tuned and modify the fuel system for flex fuel to 100% handle any detonation concerns when cranking the boost to whatever those dinky turbos can put out.
    • I would say no, why, because my daughter, who also lives in Goulburn, hasn't recommended us going there Pity, as we miss all the German joints around in Sydney, actually, the restaurants are the only thing I really miss about Sydney, and a special mention to Ishibanboshi at Bondi Junction, their Kara-age Don is heart cloggingly deliciousness (always added a special boiled egg...or 2) 😋 
×
×
  • Create New...