Jump to content
SAU Community

R31 Ls1 Conversion

v-spec2

By v-spec2,
in Victoria

 Share

Recommended Posts

SLIDN31 Contributor

SLIDN31

Posted
Posted (edited)

You aren't from Vic - So unfortunately what you can do in your state has no bearing on this topic at all.

So as i said earlier, I'm very confident you'll never get a ~300kw LS1 registered into a R31 (factory of what, 140kw) in Vic which was the conversation being had.

Sorry forgot this was a Vis topic. WOW i though SA was the toughest with engineering! But they are actually about 245fwkw, S2 VY n VZ SS, not being a smart arse, and put out the same torque as my 25 got approved with.

How do you guys go about engineering? Do you have to under go seperate tests at a certain price per test? Chassis strength tests, lane changing tests, braking tests?

Edited by SLIDN31
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Oh it's an older one, not the 286kw one or whatever? (not 100% upto date with LS1 outputs in whatever forms)

You basically get scrutinised for everything from Emission controls, brake/drivetrain upgrades, engine mounting, frames, exhaust noise etc etc. IIRC as soon as its non-factory, non-family option - you go through the ringer.

I think more than a 20% or 25% power increase it gets tough and the other issue is the torque figures will be what will really hurt you.

EG. You can't engineer a LS1 into a torana or anything these days here. The VASS Engineer who did my car (26 into a HR) was telling me it happens often as people do the conversion BEFORE checking with a VASS signatory. They haven't signed off once since some changes were made a few years ago. Not sure what they were though, i didn't go into more detail on that topic at the time.

Cost/Effort wise it's a certainty you'll get a RB in, and cheaply simple due to the fact it's Nissan and it's bolt-in effectively with just a brake upgrade to the same or similar spec the motor came from.

Fken Victoria is seriously 15 years behind. The EPA laws are from 1992 :(

SLIDN31 Contributor

SLIDN31

Posted
Posted

Ah ok. Yeah we are the same when it comes to all the tests. You have to have papers and reports on EVERYTHING when you go for your inspection. I have a whole folder in my car that i have to carry around with me at all times for the police haha.

Yeh my mate said it wouldnt be easy but its do-able.... But like you said $$$$$. In total over here, it will be about 4k for papers, compared to 2k for the RB, not to mention RB's being a hell of alot cheaper. The set up i have will be fine apparently, the only thing is the clutch bleeder location.....a hole in the passenger side tunnel with an extension to bleed LOL

  • 2 weeks later...
  • 2 weeks 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

    • Dose Pipe Sutututu
      NC MX5

      By Dose Pipe Sutututu · Posted

      Lamb roast on Saturday will be different 🥲
    • TurboTapin
      RB25DET with solid lifters - which cams ?

      By TurboTapin · Posted

      They are under bucket shims. Tomei provides a test shim kit and then any measurement of shim required. 
    • GTSBoy
      RB25DET with solid lifters - which cams ?

      By GTSBoy · Posted

      I always wondered how you were supposed to buy a set of 24 buckets and somehow magically have every single one of them yield exactly the desired clearance. I would have thought you'd need to assemble a cam with either 12 "sample" or "example" buckets of known top thickness (or a single such sample/example 12 times over!!) measure clearances at every valve, and then do the usual math to work out what the actual "shimness" of each bucket needed to be, before buying the required buckets to make up he thicknesses that you didn't have on hand.
    • TurboTapin
      RB25DET with solid lifters - which cams ?

      By TurboTapin · Posted

      I now seem to be limited in power due to my rev limit/hydraulic lifters in my built RB25. I'm looking into converting over to Tomei solid lifters. Question for anyone that has done the conversion. I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  I don't know where I got this idea, as so far I see no mention of this in any of the Tomei documentation. It just states I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
    • TurboTapin
      Why am I hitting a power wall with my stroked RB25?

      By TurboTapin · Posted

      I couldn't agree more. I should have started from the get-go with a NEO or solid bucket conversion. I started looking into converting over to solid lifters yesterday. Now for some reason I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  But I see no mention of this on any of the Tomei documentation. It just states that I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
×
×
  • Create New...