Jump to content
SAU Community

Recommended Posts

The best RB24 thread on SAU using the RB25 crank is by Legend01...have a read, there is sure to be some good info to help you out.

http://www.skylinesaustralia.com/forums/-t...end01&st=20

He used Arias pistons

cheers matey that is a good help although he looks like his ploud some serious money into that im doing mine on a budget hmm what to do

  • 2 weeks later...

There are ways of building on a budget when you can do most of the labour yourself.

I have found the part no.s for the 4agze pistons only problem is there appears to be 4 different ones mk1-3 and 0.5 overised.

can anyone thats dont the conversion pin point waht ones i need please !!

The cost of gaskets, studs etc in my eyes means instantly no rebuild is budget. Just hope my RB20 lasts long enough for me to get all the parts together over a long enough time frame that i dont realise the large expense that is a built motor

From memory when I looked at using the 4agze pistons the math said they would sit 4mm shy of the deck.

There are ways of building on a budget when you can do most of the labour yourself.

I have found the part no.s for the 4agze pistons only problem is there appears to be 4 different ones mk1-3 and 0.5 overised.

can anyone thats dont the conversion pin point waht ones i need please !!

the early ze pistons were 8:1 and the latest ones (ae101 ze) were 8.9:1.

If you look on club4ag.com forums you should be able to find out all the specs on piston heights etc

  • 3 weeks later...

If you fit the RB25 crank and rods, and use 82mm forged RB20 pistons won't the extra stoke cause the pistons to run proud of the deck, (block) ??

Maybe this is why the 4AGZE pistons are the preferred option??

Sorry to bring this back again but im almost there with the build, the block is at the engineers being rebored to the 4agze 81.5mm pistons :ninja:

I am now struggling to find the right headgasket how do i know what thickness and where do i get an oversized one from ???

Any help greatly appreciated :)

Tomei etc make the headgaskets in bore sizes up to 83mm and various thicknesses. I have 82mm Tomei pistons and they do the associated head gasket for it. I cant help you out with thickness as i am going a different route with the head so mine will be different

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

    • My take on gg2 48mm, 54mm, 58mm, and 62mm compressor map for same size compressor vs gg1 : All gg2 only outflow gg1 above 20 psi. As all g gen 2 surge line at lower left of comp map move to the right, all gg2 sacrifice spool vs same size gg1, surge line move to the right worst for 54mm gg2. So for same size compressor if you want best response, use gg1, if you want max hp at >20psi use gg2 but you will be laggier vs same size gg1. Max compressor efficiency drops to max 75% on all gg2 vs max 76%-80% of same size gg1. Iirc lower efficiency means hotter iat less dense air so lower hp at same operating point of comp map. Also curious why gg2 is mapped to lower max rpm vs same size gg1 (only 48mm size both gg1 gg2 mapped to same rpm) : 54mm gg1 165,000 rpm  vs  gg2 160,000 rpm. 58mm gg1 150,000 rpm vs gg2 140,000rpm. 62mm gg1 145,000 rpm vs gg2 140,000 rpm. If gg2 can safely spin to gg1 rpm then they can flow a bit more than as mapped. Good thing that all gg 2 interchange compressor and turbine housings with same size gg 1. So gg1 owners can buy gg2 chra only if planning to boost >20psi.
    • My stuff is all with Shannon's, granted, I don't really have imports I'm driving on the road, however, I've had multiple cars at the same time with them. Presently we have the Landcruiser on laid up cover, Sarah's Kluger on full cover, and the house insured. About 18 months ago Sarah wrote her Subaru Liberty GTB off, insured with Shannon's, and the payout, and buy back of the wreck was super quick. In 2020 we had the VF Commodore totalled in a major hailstorm. Storm was on the Saturday, I called on the Sunday and lodged it, vehicle was towed on Tuesday night, assessment team called on Wednesday to say it was a total loss and get payout details, money was in the bank on Thursday morning. Have had a few other claims both at fault, and not at fault, over the years, and never had an issue with them.   Funnily enough, they're also the cheapest insurer I find for things like Sarah's Kluger.   I will say I'm less impressed dealing with them lately around "the experience", as a lot of their staff that you deal with aren't car enthusiasts. Shannon's has a much more main stream feel ever since they decided to become "big corporate", laid a heap of staff off, and then hired a bunch of non enthusiasts. At the same time they've been making a push to be less "call us and we'll personally have someone who cares help" to "hey, this computer can do stuff for you" and are trying to get more square pegs to fit round holes. (That's just the vibe I get from them). Again, have had no issues with claims with them, but get a bit of a "less personal" feel from them.
    • A thing I wasn’t happy with with enthusiast was during the initial phone call they told me they’d insure it for 130k but needed photos.   I then sent them photos and they told me $80k as there were other cars either similar modifications available for around that price, I told them to send me the links to said cars so that I can buy them. i then sent the modification list with prices of the parts (no labor) and the price then came to 115k, which is still shy of the 130 that was agreed in the initial phone call 
    • Ask me a bit later this week before payday
    • I agree that delayed payment probably isn't the most suitable solution. It seems a solid complete transaction would be best. As I wouldn't be using this sale as a line of credit that would typically earn interest, we can probably arrange a much cleaner single transaction deal. I can do $92.52 today. Would you prefer EFT, or Cash on Pickup?  😛
×
×
  • Create New...