Jump to content
SAU Community

Rb25 rod power limit ? Replace pistons ?

Frozengrip
 Share

Recommended Posts

Frozengrip Contributor

Frozengrip

Posted
Posted

Hello sau folks , last post was regarding some Hks rods I was interested in purchasing for my rb25. Little did we know a worldwide pandemic was in the works ?. Regardless those are already sold and I must move on. Must’ve been fate.

Anyways I wanted to know what the durability of the stock rb25 rods were and what power they start to go at. It’s not like I’m looking for huge power (350-500hp) but I am looking for great long run reliability. I know the stock pistons are the first to go before rods so I don’t mind getting some forgies. 

I have done some research and read rb26 rods are a great and cheap alternative for added beefiness. So might be on the look for some. 

So should I just pair my stock rods with forged pistons or go the rb26 rod, forged piston route ?

or am I just overthinking it lol.

 

thank you guys. 

Frozengrip Contributor

Frozengrip

Posted
  • Author
Posted
8 hours ago, GTSBoy said:

Just prep the stockies if you're not wanting to spend money. If you're happy to spend some money, forged rods are "infinitely" stronger.

I don’t mind spending on some forged rods , but want to know what’s the limit on the stock rods so I could maybe excuse that expense. If they survive my power levels for a good time that’s all I care for. Think I’ll definitely be getting some forged pistons though.

 

thank you 

Kinkstaah Grand Master

Kinkstaah

Posted
Posted
4 hours ago, Ben C34 said:

There are no set limits.

This. Even when stock engines fail, I can't recall a single post in the last 10+ years here of

"A rod let go"
"A piston melted"

  • Like 2
Frozengrip Contributor

Frozengrip

Posted
  • Author
Posted
1 hour ago, Kinkstaah said:

This. Even when stock engines fail, I can't recall a single post in the last 10+ years here of

"A rod let go"
"A piston melted"

Well if there is no stock limit on the rods , think I’ll be putting some arp rod bolts , forged pistons and see how they go.

 

thank you cheers

robbo_rb180 Grand Master

robbo_rb180

Posted
Posted
6 hours ago, Kinkstaah said:

This. Even when stock engines fail, I can't recall a single post in the last 10+ years here of

"A rod let go"
"A piston melted"

I think that's going to change with Americans now getting into the platform....... 

  • Haha 1

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Rezz
      OEM Soko: Japanese business supplying Automotive items from Japan - Freebie inside!

      By Rezz · Posted

      We have some genuine Japanese legally decommissioned car number plates now in stock 🙂 Add some legitimately obtained JDM style to your Skyline or other Japanese model, or simply as a garage/man cave decoration! About the 40mm hole: The Ministry of Land, Infrastructure & Transport in Japan recognised the popularity of keeping decommissioned plates among car enthusiasts and came up with a method to "destroy" (or render them unusable for street use) while still retaining their collectable/usable value for display etc.  We have 40mm hole covers available to cover the hole nicely with a Sakura motif, which are also available in white in (very!) limited quantities, however they frequently sell out. Please let me know if you're wanting one or more of these and I'll check availability. The Sakura motif covers are more common. https://www.oemsoko.co.jp/products/genuine-decommissioned-japanese-vehicle-number-plate-set-su-7515 https://www.oemsoko.co.jp/products/genuine-decommissioned-japanese-vehicle-number-plate-set https://www.oemsoko.co.jp/products/genuine-japanese-vehicle-number-plate-400mm-hole-cover *Please note that we can't obtain particular number or area name (eg: "Gunma 500 Fu ・86") if requested. All plates are provided as they become available after decommissioning. 
    • MidnightR32
      RB20DET lean on cold start

      By MidnightR32 · Posted

      Ah, fair enough. For the IAT, I'm using a legit GM sensor that was used on the car prior to my current build. I'll get another wideband and IAT ordered and follow up when they show up. Thanks for the help.
    • GTSBoy
      RB20DET lean on cold start

      By GTSBoy · Posted

      You shouldn't need to massively fatten up the mixtures for cold conditions. For one thing - 0°C is not that cold. For another, the Haltech will be using the IAT sensor to tell it how dense the air air, and calculate the correct amount of fuelling. Then the cold start enrichment is added as a % on top of that, so it should scale with the main fuelling. You might also doubt the IAT sensor at this time. You're not using one from an RB26 are you? Using a nice Bosch sensor or similar? Happens. Some wideband units take great pleasure in killing their sensors. Put another wideband in the tailpipe and compare. Or just swap the sensor to a brand new one and see.
    • MidnightR32
      RB20DET lean on cold start

      By MidnightR32 · Posted

      Oh, my misunderstand. When the car was running, it sounded ok, but if I gave it any gas it wanted to die but caught itself afterwards. It's very different from how it was a couple months ago when it was warmer outside. The logs show that the AFRs are better during, what I assume, is warmup enrichment. Because it's cold, and air is more dense, should I work on the enrichment bit?
    • A31Skyline
      Rb20e and RB20DET parts

      By A31Skyline · Posted

      yess of course im not using 2nd hand parts from my spare engine, but the place where i live is hard to find parts for the RB20DET ,but for the RB20E is everywhere including new ones and a lot cheaper ,because for the RB20DET you have to order it overseas to get one and it cost a lot of money 3x the price to be exact. so i ask this topic because if i can use the new ones but for RB20E is it compatible or not. if not im screwed haha, not totally screwed but i have to save a lot of money first before i can begin repairing my engine, thanks for the information before.
×
×
  • Create New...