Jump to content
SAU Community

Rb26/rb30 Conrod Choices......

Ramius83

By Ramius83,
in Engines & Forced Induction

 Share

Recommended Posts

Ramius83 Collaborator

Ramius83

Posted
Posted

I am in the middle of buying/building my new RB26/RB30 swap in my S14 here in the States. I have been researching the conrod issue and I have a few questions for everyone here. I feel that I have beat myself up researching this and I just want all of your opinions since real world experiences are more important to me than the different companies marketing techniques. I am looking for around 800 AWHP, give or take a few HP.

I have narrowed it down to a few decent choices, knowingly staying away from the Chinese copies such as Manley, Spool (which appear to be ok) etc. So I have found the following, in no absolute order.

1) Pauter X-Beam Rods

2) NITTO I-Beam Rods

3) Argo I-Beam Rods

I know that all of these choices have the +'s and -'s, but I need your help with this. The Pauters come available (for an extra $45.00 a rod) with wrist pin oiling internally through the rod. The NITTOs supposedly have a jet near the main that squirts oil to the bottom of the piston, mimicing a block oil squirter. And the Argos speak for themselves with the RIPS boys.

So with cost set aside (since the rods are an important part of a longer stroke engine with higher RPM ranges) what rods do you recommend? No TItanium recommendations please, I don't have $6000+ for only rods.

Thanks guys.

Link to comment
https://www.sau.com.au/forums/topic/403853-rb26rb30-conrod-choices/
Share on other sites
Gerg_R31 Mentor

Gerg_R31

Posted
Posted

argo carrillo spool etc all decent rods, but i wouldnt put them in an rb30,

rb30 doesnt have block mounted oil squirters,

the oil squirter makes sure the oil reaches the bottom of the piston, which keeps it cooler, less detonation, less f**king around taking the timing out to loose power to prevent it detonating

without the oil squirter in the rod it will seep out towards the radius/ counterweights and will spray but will randomly touch the bore and bottom of piston skirt

rb30 STD & Nitto rods have oil squirters in the big ends of rods - thus the reason i only recommend the standard with up graded ARP bolts or Nitto H beam or I beam rods

(if you or anyone else knows of any other brands that have the oil squirter in the rb30 big ends then please post them up)

r33_racer Grand Master

r33_racer

Posted
Posted

Alot of them have the notch on the conrod side faces to direct the spraying oil up the bore and onto the piston/small end area. But then again alot of engines dont have oil squirters and dont have issues. No doubt a buttload of rb30's running around without oil squirters and dont have det issues either.

Gerg_R31 Mentor

Gerg_R31

Posted
Posted

H beams have the "valley" to guide the oil, but how does the oil get there?

The notches your talking of are on the sides right?

And im not talking about detonation consistently, my car plain H beams, tuned, bad batch of fuel detonated, rebuilt, coated pistons drilled 1.5mm hole in rod in line with bearing, tuner said he had more timing to play with, more chance of a better result

r33_racer Grand Master

r33_racer

Posted
Posted

Yeh the conrod side faces. Same trick used by honda f1 back in the turbo era.

Argo I beam rods have the notches in the sides to direct oil up towards the bore.

Im not disputing what you are saying. Just saying there are alot of people with no oil squirters who dont even realise the difference, and there are people who do and dont realise the difference. Maybe in your NA engine it is more pronounced.

  • 2 weeks later...
tridentt150v Grand Master

tridentt150v

Posted
Posted

Ive used spool rods in several 700hp+ rb30s with no problems.

They now have oils squirters also.

Good to hear........I was looking at their kits and what you get for $2K is pretty good value esp. for a streeter.

  • 1 month later...
harks Collaborator

harks

Posted
Posted

Does anyone else have exp with spool? Ive heard some very positive results, but alot of negative also... generally with negative comments its always the 'cheap chinese imposter' with no foundation or reason for the remarks

  • 2 months later...

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

    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I hadn't thought about the variable power steering assist. Presumably, it will always be the same level of assist as you get in an S14. The R32/3/4 are either helliishly heavy (at low speeds) if the solenoid is not powered at all, or hellishly too light (at high speed) if it is powered all the time. I presume that it is PWM controlled on those cars. I hadn't thought about the S cars not having variable assist. ugh. What crappy plebby cars they must be!  
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      Hmm yeah that is a good point. It looks like it'll just bolt in with no real issue besides maybe the bushings being different. My other concern was that 2 pin plug that I assume is used in some way to control the rack solenoid depending on the speed signal from the ecu. The DMAX rack doesn't even have that plug though so, don't think it'll matter. Might just order the rack and see how it goes. Will update this when I figure something out
    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I'd say it's a fair bet that the feed and return fluid lines will be in different enough spots that you would need to come up with a way to cut the originals short and adapt with new hard line adaption or braided teflon hoses or somesuch. But really, you have the car, you have the photos of the DMAX rack - you should be able to go out there and see for yourself whether they're in the same or different spots.
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      I've been doing some looking around and honestly was just considering throwing a new rack at it. I saw that the dmax silvia rack bolts up into the 33 with the silvia bushings but not sure if the high pressure lines will sit in the correct spot. I believe other version of the 33 rack are the same/similar to the racks that can be opened up without as much fuss so I assume the dmax rack would fit but any ideas?
    • GTSBoy
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By GTSBoy · Posted

      I've never played with one, but I would expect that you are correct. That slot looks like it is intended to be used to unscrew the end, and the flats on the body would be better than grabbing it around the round bit with a pipe wrench. So, yeah, probably unscrews. You'll probably have to make a tool to drive in that slot.
×
×
  • Create New...