Fantastic work Paul....
I love your build thread.... Dedication, Love, Care and Hard Graft.
Just amazing.....
Fairly sure that was on his old K26 setup and he painted around the warning sign on the OE pipe...I notice your mate staceys3 has painted his charge pipe black and still has the oem warning. Not sure if he covered that as he painted it, or got it redone somehow? Maybe worth asking him?
Sounds like some promissing results
I did see your facebook post with the figures earlier but cant see any of these pics as they're blocked on the poxy work computer! What sort of boost levels did you climb to in the end?
Do you think the AH coolers up to the job? (hope so as i'm in the same boat)
What are the cams going to set you back? 430bhp (on the third run) is still a heap of power!
Awesome result
Are you getting Bill's custom grind or off the shelf ones? Don't fancy the IE CVA1 or 2's?
I realise it is the power at the wheels. When you say you were "aiming" for 500hp, were you meaning at the fly or at the wheels?
All along I thought you meant wheel hp as that is usually what people discuss when modifying/tuning their cars.
When people quote their flywheel hp figure to me I usually feel that they are trying to brag
That's very interesting. My apologies, over here in Australia wheel HP (well kW) is usually what is quoted when you ask the bogan doing burnouts how much power their commodore (bogan car) is making.Leaning towards Bill's custom cams... I know these work at least ;P
You are thinking too much like an american lol.... flywheel horsepower is all I care about... wheel horsepower using proper coast down is too variable and subjective to conditions... measured flywheel horse power from a dyno that can measure coast down losses is more accurate IMO... I trust Bill's dyno and seeing as my car has only really been on his dyno all power changes are relative so you see actual gains rather than just some figure...
When I went to the a dyno day a while back (where my coolant hose split and the engine bay caught fire!!) the dyno showed 50hp more than when run on Bill's... this is fairly typical of what I have seen and why I treat dyno figures (particularly from other dyno's) with a pinch of salt...
So to be clear lol... I am looking to get over 500hp at the flywheel on Bill's dyno consistently across at least 3 back to back runs... the runs we did yesterday suggests the consistency is there I just need to open the engines flow a little more to achieve the horse power the rest of the hardware is capable of...
Its all about the flow (tm) ;P
<tuffty/>
I would have thought that it would be more accurate given that a dyno measures power at the wheels and then uses the deacceleration to calculate the flywheel power, or have I misunderstood?
That's very interesting. My apologies, over here in Australia wheel HP (well kW) is usually what is quoted when you ask the bogan doing burnouts how much power their commodore (bogan car) is making.
I would have thought that it would be more accurate given that a dyno measures power at the wheels and then uses the deacceleration to calculate the flywheel power, or have I misunderstood?
When people say that you can expect 260hp from a remap on a s3, are they referring to flywheel or wheel HP? Or 180 from a k03 a3
Don't know why I ever doubted you mate it won't happen again
Nice one mate and now seen the graphs it looks wicked with still producing lovely power low down stroker ftwI have posted both graphs up on FB now mate... let me know if you still can't see them
I think the AH Fabs cooler will be fine... it was a hot day and the level of heat generated by a high horsepower turbo engine is quite intense... on the road IATs are much better... airflow to the the cooler is quite limited on the S3 without modding the bumper but I plan to try fabricating a type of duct to force air across the surface of the cooler... my little A2 has a similar bit of kit on it that seems to direct air to the section hidden behind the bumper so will try something similar
430hp is the at the wheels figure mate... this changes depending on transmission losses and the tyres were pretty sticky to stop wheel spinning on the dyno as this produces false torque figures and subsequently incorrectly high hp figures... 477hp is where she sits currently as we turned the boost back down to the second run settings... more boost just lifted the torque a little and had no effect on power as the engine can't get the air through it quick enough
<tuffty/>
...It definitely makes sense channelling the airflow so it can't escape as even the smics have ducts, you gonna tig on some plates to the end tanks?
So is that on the finalised map for you're set up as it stands now tuffty ?
You have taught me something else...
I did not know the following formula
Torque = (5252*Power)/RPM
Judging by that formula, Torque is just how early you make power in the rev range? For example a low revving diesel makes a lot of torque but in comparison a high revving Ferrari v8 does not make as much as you would expect. So as long as your torque stays constant, you will keep making power as you rev higher?
The calc is the fundermantal bhp one
EVERYTHING is calculated from torque and rpm...
hold torque higher and sustained in the rev range, more power is achieved
and the units are consistent with each other)
I was always confused how a dyno that only measures how fast the wheels are turning and the acceleration of the wheels, could have two outputs (torque and horsepower). Now that I see they are directly related, it is all making sense.
Yeah, thats the plan... will have a look at it as a winter project...
Popped into Bills on the way home from work this afternoon and grabbed a couple of graphs from the dyno that I think are quite interesting..
Firstly a comparison of my old GT3071 on a 1.8 bottom end vs the GT3582 on a stroker bottom end (82mm pistons remember and not the typical 83mm that most go for)
Despite being a much larger turbo and having a larger manifold to fill there is just more of everything everywhere... was quite surprised to see this... they are both on 0.63 a/r hotsides but the GT30 was on a log manifold with a smaller internal volume and the GT30 has a much smaller turbine... merged collector and stroker ftw!!
This is of course not even finished yet... cams should hopefully allow me to use more boost between 4.5k and 6k where surge is present and lift torque... to get 500hp at my redline for example I need to be seeing just over 336ftlbs of torque at 7.8k rpm (Torque = (5252*Power)/RPM so (5252*500)/7800 = 336.7 ftlbs)... to work back power then transpose the formula as Power = (Torque*RPM)/5252
Another interesting comparison (I think) is Std K04 (unmapped) vs Hybrid K04 vs GT35
I was hoping the combo of parts I used was gong to make the car pretty drivable... when seen back to back with these other graphs I was really quite surprised how well the GT35 faired considering its classed as a huge turbo and generally considered laggy...
A K04 on a stroker is a different ball game altogether of course but in context of my build and the original spec I am really quite pleased with the outcome...
<tuffty/>
Would you actual fecking believe it!!!... was at our local Sainsbury today on my way to Bill's in the S3... and some a**hole reversed into the bumper!!! ***!!!
...and the worst bit...
I didn't see it happen but luckily there was a witness who had taken all the details down and waited for me to return... actually reinstated my faith in people... apart from the a**hole who drove into the car of course.. apparently is was a scruffy piece of cr*p Astra that looks like crashing into other cars is a hobby!!... w*nker!!!
I have called the police and gave the details and the insurance company know too... guess I will have to wait and see what happens...
I am massively annoyed that people think this ok to do and tbh I am glad that it was only the bumper and hoping that they can do a smart repair on it rather than take the car to a body shop... if that happens then I am not sure I will pursue it as I really don't want to leave my car with anyone I don't know...
The scuff should mostly polish out but the cracking from the deformation will mean it needs paint..
What is it with people!!!??!!
(rant over).... (ish...)
<tuffty/>
Was there a CCTV camera in the car park? This happened to me a few years back and the store kindly sent a copy of the footage to my insurance company.