Jump to content
SAU Community

Increasing redline on RB25

JimX

By JimX,
in Engines & Forced Induction

 Share

Recommended Posts

Sydneykid Grand Master

Sydneykid

Posted
Posted
I'm not sure whether there breed you dumber over there or not, so I'll repeat myself slowly so you may understand.

The probe is inside the engine-bay, in-front of the airpod, with the bonnet down. After 7 or so power-runs the air gets pretty damn warm in there, the fan is directed at the intercooler.

Oh that's pretty dumb (your word, not mine), we have a 2 fans in the dyno room that cover intercooler/radiator, oil cooler and engine air inlet.

The reason I asked is because ....... well if you know how Shoot Out mode works, you already know why I asked.

Time sydneykid built a car that shows his tru skills.

How many do you want? I have no interest in dyno queens and 1/4 mile is boaring. You know Circuit Racing is what we do and engines are a very small part of that package. My cars have won races all over Australia. Two of them hold the current class lap records, one at Sandown and one at Oran Park. Another has the category lap record at Wakefield Park. We had the category and class lap record at Eastern Creek until last meeting, but we will get it back. Won Bathurst outright twice, won classes 3 times, finished top ten on 8 occasions. I think we still have the Improved Production car record at Surfers Paradise and the Sports Car lap record at Lakeside. Sandown, let's see, 2 outright wins, 3 classes .................

Shooooot, how many more times do you want me to show my true skills? :D

  • Replies 156
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

I would strongly doubt no matter where we located another fan that it would stuff all difference to the intake temps from the engine bay. And no, the intake temp would make very little difference to the overall power reading, and this is from DD themselves, feel free to ask them. :D

mokompri Community Regular

mokompri

Posted
Posted

thats very impressive SK !

from what i know at = atmo temp, it = inlet temp, and that these are used to compensate for diff temps to give 'equal' readings in various environments, am i right ? but what are the true workings behind it, you seem to indicate you know

Sydneykid Grand Master

Sydneykid

Posted
Posted
One temps room temp ones air intake temp and as ppl dont drive with their bonnet open it tends to get hot under there..

You mean you don't have a decent ambient air feed? Surely not.

All you own work eh sydneykid? What is yor real name as you must be famous.

Nah drivers are famous, team members are anonymous (even the team manager). :D

Merli Grand Master

Merli

Posted
Posted
Bullshit.

Funny thing is, that we're calling the same things about your dyno figures... Works both ways doesn't it? :Oops:

Again, in case you missed it in the other thread, lets check the attitudes at the door.

51jay Mentor

51jay

Posted
Posted

Quote...it seems like either HPI have quoted the wrong tyres or he did use them

__________________

Seems like they quoted the wrong track too He ran that time at the Jamboree in March this year at the Sydney track. Mick and I were there but we didn't race.

I guess we need a word from Theo.

Roy Grand Master

Roy

Posted
Posted

Strip, meh. For the occasional bilp down the qtr i dont think there should be too much concern about increasing the rev limit.

If you do sustained big revs/high speed then id be a little less confident to wind in more revs. Punt a car around a track constantly ringing the cars neck over 6,000rpm isnt good for it. Ie change up gears at 8,000rpm. Most of us drive road cars, not race cars on a qualifying lap.

This thread is funny, there seems to be a few ppl getting a little defensive / aggressive :argue:

Big numbers and quick times mean nothing to me. Tell me how many engines therse cars have destroyed, how much coin has been swallowed to get things right...then im impressed if its all been done right the first time. Everyone throws around numbers and times, but no one shares the hand grenade stories :boohoo:

Roy Grand Master

Roy

Posted
Posted
Gary stewarts RB25 totally stock but with 2x 2530s has raced full time at wanneroo raceway for years at 7500rpm and 400rwhp with no engine problems.

Wanneroo... i have only seen it on TV. It looks liek the straight is pretty quick but he rest of its is dancing on throttle stuff?!?!?!?

My new found concern after having driven around Phillip Island ( i suspect Sandown will be the same) is the time an engine spends well over 6,000rpm. Hit high 7gs change gear and the thing is still reving its little heart out at over 6,000rpm. Sydney tracks are nothing liek this, and much friendlier to engine, as i suspect Wanneroo is

Roy Grand Master

Roy

Posted
Posted
I wouldn't say E.C. is a slow track, but with any track I think that it's up to the driver where to keep the revs - Oran Park could be a continuous 6-8k rpm affair.

LOL, come on down and bring your helmet. Your right about revs, i was short changing trying to keep the thing in one piece, but Eastern Creek only has one quick turn and isnt all that fast compared to PI. It has 4 really quick turn like Eastern Turn 1. Only two are quicker :P

I could have been way quicker if i had rung the cars neck, (doesnt the TD06 liven up the top end) but its more then just the rev range. Oran park is like blip , blip , blip on /off throttle, to a certain extent so is Eastern and of coruse Wakefield. At PI you have much longer intervals of sustained load and revs before you back off.

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

    • defari
      What Music Are You Listening To?

      By defari · Posted

    • PranK
      My BMW 335i

      By PranK · Posted

      Yeah its bad eh. Ey! Watch your mouth. Yep, spot on. The rear's are always gone too though from brake checking. I had them perilously close to a tree that we had taken down. I think the tree peeps may have taken it. Either for a trophy, or accidentally.  
    • GTSBoy
      My BMW 335i

      By GTSBoy · Posted

      f**kin' yikes! That insulation is the shittest stuff I have ever seen. You need to do an insurance job on that f**ker, pronto. WRT to the washer cover, I would have said that there'd have to be some at a wrecker, then remembered that it's a BMW, and reasoned that every single wrecked one would have been tailgating and so the front end would be trashed.
    • PranK
      My BMW 335i

      By PranK · Posted

      Oh and I lost my headlight washer jet cover!
    • PranK
      My BMW 335i

      By PranK · Posted

      Ok, so I got myself some X1 wheels really cheap to try out, they're a bit different and I like them but they're really narrow (18x8) they are available in staggered 18x8/9 also but really hard to find.  I kinda dig them, but not as much as the F10 19's I usually run, so these go into the wheel pile.         As I mentioned in another thread, I got a new exhaust. It's an off-the-shelf stainless one that fits OH-KAY. I don't love the tips size and how far they come out the back, I think I might cut the tips off and replace with some smaller (~3") ones that don't extend as far. It sounds really good though, I'm not sure if its just in my head but the car feels a little quicker, more responsive.      I fitted an eBay special front lip. Surprisingly it fit perfectly and all holes lined up. Its a little rickety but I haven't put any double sided tape on yet, I want to clean the front bar up where it has scraped the road a lot and fil in the number plate holes (or, get body coloured wrap to cover them - is this a thing?  I'm not sure if I'll leave it gloss or pain it matte. I really like it though, I don't particularly like the front bar without it, I don't really like the M-Sport and to get anything else is just too expensive. That said, I might need a new one now anyway as I dropped the car onto the jack after forgetting to put ramps under the front wheels. It bent a lot and while it did go back to normal after I got the car off the jack, I do fear I have not done it any favours.    Lastly, my headlights died. Different problems in each. They have gotten much dimmer over the past year or so, I put new (uber expensive) OSRAM bulbs in them but to no avail. One of them pointed at the ground and the other just kinda did its own thing with light working sometimes. Yeah, check this 18 year old BMW headlight wire. I reckon I know why they were stuffed.            BTW, the yellow and black is the power to the Xenons. Yikes. I hunted around an researched my options here. I would have loved to just get a replacement harness but not a thing. My car has adaptive headlights, that is they rotate left and right with the steering wheel. Good condition used adaptive xenons were over $700 each, non adaptive were around $400 each, but I couldn't help but think that they're all around 18 years old now, surely they'd have the same problems. So I looked at newer LCI headlights but they were even more expensive and I couldn't confirm that they'd be plug and play with lots of people having lots of opinions so not worth the risk.  I ended up getting brand new Chinese headlights from MARS. They're very close to OEM with only the angel eyes being a bit different. I didnt want crazy turn signals or sharp DRL's or anything. Not my bag.  They're not adaptive, I thought thats a feature I wouldn't really miss. So I coded that out.  The lights are awesome, they look so nice and they take so many years off the car. The angel eyes look great and the headlight brightness is ridiculous. I was so used to the old ones, I didn't realise just how bad they were. The new ones use the OEM bulbs, Xenon ballast and leveller motor which I was happier with. The only issue with them is that the rear cover is held on by SEVEN screws. This will be a nightmare to get to and open when I need to change bulbs.   
×
×
  • Create New...