Jump to content
SAU Community

Recommended Posts

i think most are hoping for a little more driveable (and reliable!) 300-400rwkw out of an rb30det as opposed to 300rwkw rb25det.. well me anyhow :cool: why i sold my r33 - too much effort & dosh over a $20k car to begin with and few things i wanted to change anyhow..erg.. thought it was easier to start again..

as to what times are possible, depends really on the rest of the setup i guess and whether you really want just a nutty drag car or good all rounder. I want the latter.

in reference back to SK i have done a little more research today and i actually think that eagle are starting with a subaru rod of some discription... i couldnt tell you what particular engine it is from but that is the word i have been given by a man that has delt with alot of subaru's and used eagles many times!!!!

Again back to engine outputs and so forth, it is never a good idea to say "oh i have seen or my friend or insert mechanic here has seen rb30's do 350rwkw on stock prepped rods, goin ask a few vl people how many they have seen let go as well.... looking at a stock rod compared to the eagle there is no way i would trust them past 80-90 hp each especially considering they are a stud and nut arrangement!!! Personally my biggest moto ever and i use it applied to everything " IF ITS WORTH DOING IT WORTH DOIN ONCE DONE RIGHT"... However im not saying the stockies wont do the job but for me i like the added insurance.... Cheers, Daniel.

wouldnt 400rwhp be between 550 - 600hp @ flywheel? What i find hard to believe is that a standard rb30e bottom end with cast pistons with a proper tune can do that kind of power.

Anyway 400rwhp would be where I call it a day.... but then again.. i said that about 300rwhp lol this boost virus is very hard to shake

... goin ask a few vl people how many they have seen let go as well....

Thats my concern, you hear all the Nizpro guys producing great figures and doign great times, but are the engines hand grenades, are they durable etc. Ppl have a tendency to keep to themselves when they have a failure :Oops:

As for the Crower rods, do they make H-Beam rods...if im going to the expense of rods i would like H-beam rather then I beam rods...or is there no real difference?

From their website...

4340 Steel Billet Connecting Rods

Crower is the industry leader in high performance connecting rods. Choose from the largest selection of foreign makes available including BMW, Porsche, Ferrari, Nissan, Audi, Volkswagen and more. CNC machined from premium quality 4340 chromoly steel, Crower billet rods are the only choice when running nitrous oxide, high boost or high rpm in your vehicle. Contact Crower Tech for more information, including availability. 4340 steel billet rods run $167 per rod. Billet titanium rods run $459 per rod. Allow 12 weeks for delivery, 50% deposit required on all orders.

in reference back to SK i have done a little more research today and i actually think that eagle are starting with a subaru rod of some discription... i couldnt tell you what particular engine it is from but that is the word i have been given by a man that has delt with alot of subaru's and used eagles many times!!!! Cheers, Daniel.

Hi Daniel, I am not a Subaru expert but the longest Subaru (EJ20 and EJ25) rod I have seen is just over 5", nowhere near the 6" rod needed in an RB30. :(

As for the Crower rods, do they make H-Beam rods...if im going to the expense of rods i would like H-beam rather then I beam rods...or is there no real difference?

You will get plenty of discussion over the "H" Beam versus "I" Beam rods on any V8 forum. There are pros and cons. I believe H beams are a bit more aerodynamic. For the same weight "I" beams are a little stronger in torsional bend, but "H" beams balance up more evenly. "I" beams will handle a bit of abuse, whereas just a little nick in a "H" beam will result in a stress fracture. etc etc My new RB31DET has "I" beams in it, they are rated at 200 bhp each. All my previous engines have had "H" beams and I have never had a problem.

Bottom line, I have no idea which is better :(

SK yeah i thought that as subaru rods are only 5.135" for ej20 and 5.162" for ej25...

but i really cant be sure as the part numbers corispond with so many other parts doesnt really matter to me as long as they fit...

checked some rough measurements today, they are actually 6"... they come with the bearings that look to be the standard chev ones machine to width by eagle geez they have done a nice job on them... also they are quiet a thicker bearing hence the crank grindind of 1.960 +- journal tolerences...

which gets me to my next question for a 700hp+ what crank journal clearances are you running... similar hp for a chev i know to run around 3-5thou but what about a nissan i really dont want to mess this up and stuff bearings constantly

lol, go work being decisive there, SK. ;)

I was just being honest, I really can't say for sure which is better. :D

SK yeah i thought that as subaru rods are only 5.135" for ej20 and 5.162" for ej25...

but i really cant be sure as the part numbers corispond with so many other parts doesnt really matter to me as long as they fit...  

checked some rough measurements today, they are actually 6"... they come with the bearings that look to be the standard chev ones machine to width by eagle geez they have done a nice job on them... also they are quiet a thicker bearing hence the crank grindind of 1.960 +- journal tolerences...  

which gets me to my next question for a 700hp+ what crank journal clearances are you running... similar hp for a chev i know to run around 3-5thou but what about a nissan i really dont want to mess this up and stuff bearings constantly

Let me start off with, I am not a fan of grinding RB cranks, as they are very well nitrided standard. If it needs more than a linish, I simply don't use it. There are different thicknesses of Chevy bearings, I would prefer to use a thinner bearing than grind the crank. Alternatively, open up the big end. We run minimum 2 thou clearance, but it depends on horsepower, oil pressure and the oil you are using. ;)

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

    • Am I correct in assuming that the R35's are getting the classic skyline haircut off the odometer?  Quick search on carsales, there are 33 08 and 09 GTR's for sale, only 2 of them have more then 100,000km's on them (116,075 and 110,000 respectively).  And somehow there are about 25 for sale with around 60,000kms? Looks like the classic skyline haircut to me =/
    • @Stringycheese  Have you only gone to the one blue slip workshop?  There will be a heap of them where ever you live, good odds that the next place you go to will pass the car.  Unfortunately (or fortunately?) every blue slip / engineering workshop will be different and will be happy passing or failing different things - despite working from the same set of rules. It's kinda like 2 lawyers arguing over a piece of legislation, each saying their interpretation is correct. Might seem strange that this happens when it comes to getting a modified car passed, but this is very much a thing. A big part of the game is finding an engineer / workshop that is on the same page as you.
    • Bah. I daily mine. ~60km per work day, 10-12 thousand km per year. What's the point of having a dirty old Datto and leaving it in the shed. It needs to be driven and enjoyed while the govco allows us to do so. It will only be a few years before we're forbidden to even start up internal combustion engines.
    • Judging by that spring perch and the normal looking spring on it - not a coilover. Well.... it is a coilover, just a stock format coilover, rather than what everyone calls a coilover.
    • Yes it is. We get stock from Nismo directly. I'm happy to take photos/video of it as proof before I ship it with timestamps or whathaveyou.
×
×
  • Create New...