Jump to content
SAU Community

Recommended Posts

Low rev limit? LOL look at the boost he is running! I wouldnt rev it that hard either especially since its making nice power relatively early. Especially with a bottom end that is worth dollars...std bottom end. Hell why not rev the ass out of it and wind boost into until your ears bleed as it only owes you $400-600 :thumbsup:

i've only driven it home from dyno in stealth mode...lol i did gas it once... but it's hard to gauge as i was too worried about everything around me (especially coz i was on a trade plate)...

I'm on the track saturday for testing :D

It's only a little bit laggier than my setup with the hks2540 according to the graph

  • 2 weeks later...

I didnt make 260rwkw but i thought i'd share my rb20 powah!

Finally managed to install 256 tomei cams in my rb20 and have it tuned.

Previously made 207rwkw @ CRD with 1.25bar (without cams)

Without any cam timing it managed 225rwkw @ CRD with 1.25bar

With cam timing tweaked for response and torque it made 215rwkw but gained everywhere else.

The map is running much richer.

I dont have a print out, i will ring jim and ask him to fax me one so we can compare against the old tune.

I didnt make 260rwkw but i thought i'd share my rb20 powah!

Finally managed to install 256 tomei cams in my rb20 and have it tuned.

Previously made 207rwkw @ CRD with 1.25bar (without cams)

Without any cam timing it managed 225rwkw @ CRD with 1.25bar

With cam timing tweaked for response and torque it made 215rwkw but gained everywhere else.

The map is running much richer.

I dont have a print out, i will ring jim and ask him to fax me one so we can compare against the old tune.

How much did those cams set you back mate?

PM me if you don't want to post it up :(

for a laugh on the weekend we decided to run mine on the dyno to see what would happen, the motor is tired and breathing hard... but we still decided to give her 25psi :(

366rwhp and afr's that were below 10.0 across the run hahaha, we're still laughing that it held up!!!

300.2hp at 20psi with the wastegate spiking and no boost controller. need to go from 38mm to 44mm to help it out. apparently my 6boost manifold is TO good, love the sound of gate, hits boost early and hard, have to go back as soon as i can afford another gate to get it retuned and a few niggles sorted out. mick recognised the car aswell adam. hes a champion

300.2hp at 20psi with the wastegate spiking and no boost controller. need to go from 38mm to 44mm to help it out. apparently my 6boost manifold is TO good, love the sound of gate, hits boost early and hard, have to go back as soon as i can afford another gate to get it retuned and a few niggles sorted out. mick recognised the car aswell adam. hes a champion

top work mate! should have let me know you were coming down i would have loved to see the finnished setup

get a profec b spec II on it if you havent got an ebc, mick can get it to come on a bit earlier that way. spewin bout the gate being too small, ive heard of 26's with 6boob manis doing the same thing so i can only assume it might be the way the collecter is plumbed?

which ecu did you use on it aswell dude?

My RB20 made 393rwhp or 292rwkw and was pretty much at its limit. It had (to cut the list way short) GT3540R, forged bottom end, LINK ecu, 555cc injectors, 550hp in tank Bosch fuel pump..... It also had stock rods, stock head and stock plenum. Was very laggy and also had very little torque unfortunately so was very strong at the mid and top ends but lacked bottom! Best quarter mile was 12.9 @ 123mph with 2.8 sec 60 footer - the mph was up there for an 11 but you can tell with the 60 footer that I could never get the power down! Now I've gone Tomei-prepped RB25.......

has a profec b spec 2 he disconnected it to stop it goin to 30psi at 4grand, its running straight off engine vaccuum atm. got a EMS stinger in it. yeah mick was saying he's had some xr6t's do the same thing. just reckons there way to efficient. should be back up there in a month

got my tune, i rkn its a pretty responsive setup with nice mid range, but im looking at dumping the apexi turbo and upgrading to a 3037s pro

http://img265.imageshack.us/my.php?image=dynojw2.jpg

tune was done on 18psi

Edited by Justa32

Any modifications needed to fit HKS 256/264 camshafts 10.5m to an RB20 motor?

Is it just a matter of pulling the old ones out and putting the new ones in and would it be best to get adjustable cam gears or will just camshafts + tune be ok?

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

    • The plan is to get it out of the shed. The reality may fall some way short. But hope is as cheap as despair as they say. Will go a wide band I think. The coils are ok so maybe I’ll miss the $1500 on the R35 coils etc. Im still on the fence about a trigger kit. The HKS one looks nice ($1k) - not sure how it works with the Link or if Link prefer something else. Oil pressure is fine so I’m not that concerned there. Fuel pressure I’ll have a think about. The IAT got changed for the Link anyway as the old RB26 ones were really slow reacting and pretty poor. The Power FC just worked. Wasn’t terribly refined but it just worked. Probably made a mistake replacing it really. E85 isn’t available locally - it is 100+ kms away which puts it in the too hard basket. Lastly I understand Tunecorp in Perth are pretty good so was probably going there.   As for turbos is there are new age -5 drop in replacement? Turbos have come a long way in 20 years, everyone is big single which is fair enough but I prefer the old school complication of twins. Wasn’t chasing more power (well, not much more) but more efficiency would be ok.
    • I thought I'd share this....the shell is non genuine but they found or built a lot of the genuine parts. Plus, it is by far the best colour scheme of those years, the winfield once was particularly shit https://www.v8sleuth.com.au/written-off-inaugural-godzilla-recreated/
    • Good work Pete and glad the car held up well....been a while since I've seen you try properly
    • Just quick update, I've had tech issues and so a backlog on life stuff....I will pull lap times from the video and data from the ECU logs to do a proper update. But basically, in order of importance: 1. The car was excellent fun on the track, really felt a lot like the good old days. And nice to have AC while waiting 2. Coolant got really hot; again I need to pull and analyse the logs but the standard system is not up to tracking at 30o+ days, once the system was heat soaked after the first 2x15min sessions I could only do 3 laps before it got 110+ and I had to cool down. If I can't improve that it is a deal breaker 3 Oil temps were fine all day, noting it was short sessions due to 2. I think it will likely need work 4 Biggest surprise AT temps were fine, never went over 100, I would have been OK with 120 before I was too concerned. The auto sucks compared to a manual (of course) but it is faster to launch and I just need to downshift it manually before hitting the throttle, then it was OK. When I post the vids you'll hear it telling me off (beeping) for trying to downshift too early (it needs about 3500 before it will downshift, depending on gear a little but we are mostly talking 3/2 and 4/3) 5 A052s were not great which hurt the lap times, but I will be constrained in what I can get in good tyres that fit the wheel wells. These were small for a heavy car at 235/45/18. In theory I can fit 9.5 on front and 10.5 rear (so not square) but I still need 670mm+ high tyres in good brands. 6 Standard shocks/springs/roll bar are too soft for track work (of course), but that was always on the list. And happily, no white on the mat, despite having a teenaged passenger, extinguisher mount was fine. Also, it was nice to have Wakefield Park back in action  . Because the car was so quiet it is eligible for Green Day, which I thought was a band but is apparently a series of cheaper practice days they run with a lower sound limit, that is a smart idea.  
    • Great to hear you are bringing it out of the shed again. Unless you have specific issues I'd just add the wideband, get a good tune and enjoy it. Certainly no point changing coils etc if they are working. If would add fuel pressure and e85 sensor if you are doing a general update but not if it runs OK and you are just getting it back on track. The other thing is smaller, modern twins, -5 are OK for motorsport but pretty laggy and old tech for street use (of course, if performance is the priority a modern single with twin scroll manifold etc is the go but not cheap). The final thing worth considering is switching to an ethrottle if drivability is still an issue, it should make things a lot simpler and smoother
×
×
  • Create New...