Jump to content
SAU Community

Recommended Posts

I took some logs of the street races and i am pretty embaressed to say that i totally botched the race with that torana... i stuffed up hardcore. :)

I got some data together, i did forget to set the ecu to log SPEED as well :blink: so i got the data that was logged and set it up into a excel spread sheet.

You can see that the stupid anti lag did not spool as fast for some reason, i think i was too slow on the throttle and i dropped the clutch at 3100rpm when racing that Torana Drag car compared to when i raced the Datto 1200 ute i dropped it at 6100rpm+.

So yeah here is the screen shot and the xl spreadsheet if anyone is interested in checking it out. I cannot say that i would have beaten the Torana if i launched properly because its best quarter is a 8.7 second quarter mile but I can say things may have been different. I guess its all a big learning curve and i know now what NOT to do next time.

Anyways if anyone can give me some ideas on where i stuffed up or whatever then go for it.. I can take constructive critisism.

I converted the boost levels every now and then from KPA to PSI so you guys understand the boost levels i was running, over 30psi!! - 2 bar of boost.

Metric Converter is here, put the boost kpa in my log into absolute KPA to get the PSI

http://skylinecentral.org/upload/MetricCalc.exe

Excel Spreadsheet

http://skylinecentral.org/upload/race.xls

racej.JPG

And just to comment on the data..... even though you botched the drag car run with the antilag , its obviously alot smoother.... whereas your having to be on /off throttle alot more with the ute run.....

So maybe you need to try a lower rpm limit to reduce crazy wheelspin on launch for when it does boost up properly ? Obviously wheelspin is always going to be there with your power, but the drag car runs shows higher boost and more consistent, so if you can get this with the more instant responce of the dato run......

This is on pump fuel too isnt it ??

Gary

Edited by Fastrotor

yeah.. thats the one.. its a 8 second drag car with wheelie bars and chute!

it would not have looked so bad if i did not stuff up the start but you get that :banana:

You do know that this Torana won ?

when you ramp near 30 psi your afrs plummet to low 10s

is this by design as part of a safety catch?

your probably sacrificing power / throughput to cram more boost in safely - ie there might be no gain from this, or it could be negative gain

you might find more power / throughput from less boost and mid 12.5 afr instead

Yeah I like to run my engine rich. Especially for power cruise I was expecting it to get hot and I wanted to keep the temps down as much as i could so I tuned it this way.

I never tune my car to 12.5. I would rather sacrifice 10kw and have heaps of extra cooling there then have a tune on the edge which will detonate when the air temps get up there..

The car ran hard all weekend, 3 days worth of thrashing the crap out of it and the engine did not miss a beat! Yes i did go through a full tank of fuel in 190km's worth of track time in ONE day but i had damn good fun doing it.

I normally run 11.3 - 11.5afr on cars I tune with a fair amount of power. Its just safer that way, my 10afr stunt was just something I did for my car because the weather was a bit up there on the sat and sunday.

This was tuned on BP98 and was running on Shell optimax half the time at power cruise.

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

    • Big single, and seqy. #sorted
    • The R32 suffers from an instrument binnacle that is uncomfortably close to the design of a VN Commodore's. But beyond that, the layout of the rest of everything, and the materials (ie the vinyl coverings on dash, armrest, etc) are acceptable, and the patterns on the fabrics are not as blergh as those in the R33. And R33 seats are....quite unattractive. I know it's only small details there, but I reckon the R33 got worse than the 32. But the big blergh is the overall shape of the dash on the R33. It's just has that whole Maxima/Pulsar sort of look to it. Nothing special at all. Generic Nissan sedan. Whereas, at least the R32 dash/binnacle was different. Less a wide expanse of boringly curved plastic. More a "cockpit" sort of look, even if nowhere near to the degree that the A90 Supras got. R34 seats look good on their own, until you realise that they are indistinguishable from the shape and fabric on 70 other Japanese cars. And the foam bolsters on them suffer even worse than the earlier cars. Other than that I don't really have an opinion the rest of the R34 interior. I took the bits of the R34 I wanted (brakes and engine) and added them to the best external appearance Skyline in the modern era (the 32). So nyerr!
    • Can I be your first customer? I would like hard lines done for the fuel system, 8AN up and 8AN back and the underside wire wheeled and coated (brush or sprayed) with that black tar shit.
    • Speak for yourself, I love the R33 interior. 32 is blergh. I like the 34 interior too. Then you start getting much newer in most cars and they all turn back to blergh. 馃槢
    • 500-600hp into a RB is already 'sinking endless amounts of money' into an engine. Especially a 30 year old engine. Unfortunately this is the RB Game. Considering stock power (or at least stock components) will do ~360whp on 98 by simply turning up the boost on the stock gear on a RB26, that would be where I'd say the cutoff point for "sinking endless amounts of money into the engine" Cause to even do this reliably you'd probably need to replace all the bits anyway cause they're old, starting your sinking journey anyway. I reckon the least painful way is rebuilding the engine to make 50hp over stock lol. The 'plan your ownership around a rebuild' was a common saying 15 years ago.
  • Create New...