Jump to content
SAU Community

Chev Rods Modified For Rb30?

humz

By humz,
in Engines & Forced Induction

 Share

Recommended Posts

humz Proficient

humz

Posted
Posted (edited)

gota set of chev eagle H-beam rods ata good price, but they need to modified to fit rb engines. the distributer tells me this is not a major prolem and should not cost more than 2hunj for modifying an dmachining.

now i got 2 questions.

1: whose done this? what excatly do i have to tell the machineist to do to these? is the differance down near the bearing or up near the pin which needs to be changed.

2: who can do this in PERTH, ive ordered them so they should arrive in a week or so.

tenx

Edited by humz
Link to comment
https://www.sau.com.au/forums/topic/143718-chev-rods-modified-for-rb30/
Share on other sites
skidkid Proficient

skidkid

Posted
Posted (edited)

I take it you ordered rods to suit 2" BE's. You need to buy .030" under be's bearings (ACL) for 2" rod, then you have .005" to grind off be's. Bolt bearings into a rod and give .0025" clearance, from my experince only. Can't remeber what the be rod width is like comparing the two. Machine shop should be able to modify that if need be. You will also need to compare rod pin sizes. Have quoted here because I grind cranks for a killing (employed to). Hope this helps.

Edited by skidkid
rev210 Grand Master

rev210

Posted
Posted (edited)
MOPAR=Mostly Old Parts And Rust!

Dodge, Chrysler, whatever can go cram their crappy american cars up you know where.

Americans cant make cars, and the same can almost be said about poms.

err yes..well.

Kind of like the stupid head concept those idiots at dodge/MOPAR came up with, the Hemi (short for hemispherical chamber head).

Those idiots!

Hang on thats the design the RB motors have! Noooooooo! :(

Edited by rev210
r33_racer Grand Master

r33_racer

Posted
Posted (edited)

yes yes...everyone knows about their achievements...and how the aftermarket block and head designs used in drag racing are based of theirs...blah blah blah...i just dont like them...so i say silly things like that. I like to be ignorant sometimes.

Edited by r33_racer
Sydneykid Grand Master

Sydneykid

Posted
Posted
gota set of chev eagle H-beam rods ata good price, but they need to modified to fit rb engines. the distributer tells me this is not a major prolem and should not cost more than 2hunj for modifying an dmachining.

now i got 2 questions.

1: whose done this? what excatly do i have to tell the machineist to do to these? is the differance down near the bearing or up near the pin which needs to be changed.

2: who can do this in PERTH, ive ordered them so they should arrive in a week or so.

tenx

Using Chevy rods is old school RB30 stuff, when you couldn't buy aftermarket RB30 conrods. By the time you pay for the machining and the bearings you could have bought specific RB30 aftermarket rods for less.

:O cheers :rofl:

rev210 Grand Master

rev210

Posted
Posted
yes yes...everyone knows about their achievements...and how the aftermarket block and head designs used in drag racing are based of theirs...blah blah blah...i just dont like them...so i say silly things like that. I like to be ignorant sometimes.

Thats ok. I was just oversensitive as I'm thinking about buying a Jensen Interceptor, British car with a 440cui Dodge big block. :O

discopotato03 Grand Master

discopotato03

Posted
Posted

In the middle of the day ? give us a bit more credit !

No just looking at your Avatar ? Whatever that means , about films you like . Must be showing my age .

Was from the second film "Aliens" , phrase went "Get away from her you bitch" . Shoot I do need a drink .

Sorry back to con rods surely someone is making them cheap enough for RB30's not to have to remachine something in the ball park dimensionally speaking . I think I'd rather have a made for the purpose rod rather than one altered by hands unknown . No come back on an altered component .

Cheers ....

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

    • GoHashiriya
      R34 Skyline Sunroof Won't Tilt/Vent

      By GoHashiriya · Posted

      Actually, that's not entirely true. It's also the same motor in the 1st gen Nissan Cube but they're rare as hen's teeth.  
    • Duncan
      Unknown sound similar to BOV on positive boost with partial throttle RB26

      By Duncan · Posted

      Yeah it is always worth testing and balancing actuators out of the box, just set the pressure regulator on a compressor very low (eg 5 psi) and increase it slowly to see when they both move.....unfortunately while you may be able to adjust the length of the actuator rod to minimise any difference, the actual pressure they move from is not adjustable so you need a well matched pair. And yes, the VCAM is probably contributing; the earlier in the rev range they come on boost and the slower the revs build (I think your demo was in 5th), the more you notice it.  Driving at WOT through 1st, 2nd, 3rd etc you will probably never hear it as any shuffling starts and is over super quickly
    • Dose Pipe Sutututu
      Shoota's R33 GT-R RB30/26

      By Dose Pipe Sutututu · Posted

      oh they were with that motor, you need to remove the engine to change the spark plugs (don't have to, but it does make it easier)
    • nouveau_poor
      Unknown sound similar to BOV on positive boost with partial throttle RB26

      By nouveau_poor · Posted

      I certainly fall into the annoyed camp, but glad to hear that if it's happening at low boost then I'm not likely going to blow a turbo and end up with metal shards in my oil. Just feels like it prevents me from really driving it without hesitation and "peak" performance. Wonder if it's the VCAM, it did an impressive job of shifting the torque curve and faster spool, but maybe now it's "too fast" and there's too much air for how open the throttle is.  Based on some other threads, will also do some reading on synchronizing the actuators. They are the default actuators that come on the Garrett's and I would think they would be set the same coming from the factory, but if the turbos don't actually work exactly the same way at the same time as previously mentioned, it would be worth making sure the actuators are actuating together properly
    • GoHashiriya
      R34 Skyline Sunroof Won't Tilt/Vent

      By GoHashiriya · Posted

      I went down this rabbit hole before, ended up sourcing a motor from the UK (I'm in Japan) which also didn't function correctly. With the original motor, I disassembled it and reassembled it and it works somewhat, sometimes. What I could deduce from all my screwing around is that there is calibration of the gears on the inside of the motor and two ramps on the main gear which activate switches that operate the motor and move the sunroof either to retract into the roof or tilt. Where I got stuck was that, it seemed in my case that one or both of the switches that are activated by the ramp on the gear did not always activate and thus the motor did not move, causing it to sometimes not retract or tilt (apologies, I've forgotten which way it didn't work.).  Of course this part is discontinued at Nissan now, it's the same part in the S15 but no other models. I also contacted the manufacturer of the component for schematics - forgot the name, they're based in Gifu - but they declined to share the information due to being bound by an NDA, sadly. Looking through my pictures now, it seems I last had a crack at this in 2022. See, I so kindly wrote "open" and "close" next to the switches. If you figure it out, please do tell me. Those little switches, with the red buttons may need to be replaced.
×
×
  • Create New...