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 dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on October 3rd, 2012 at 07:30 PM |
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It was probably lucky that I had my 1/8 mile gearbox in there in preparation for VWMA Warwick,
and had shut of at half track and coasted through for an 11.51 @90mph.
After some discusions with varous sources, it was agreed that in my application, the distance to coil bind at .050" was too close.
Prior to this I had advice that as close as .035" would be fine, and in the other extreme, so would .150" be OK.
Anyhow, I decided to install new springs and retainers at about .080 to ,090" from coil bind at full lift,
and after inspection and some hard runs at Warwick it all looks superb.
Best at Warwick 2012 was a 6.907 @ 99.78mph, which is a little over 8200rpm in 4th gear.
Here are some links to some not so perfect runs:
http://www.youtube.com/watch?v=TTx6ZM0mLmM&feature=relmfu
http://www.youtube.com/watch?v=ZCxvMQSPs5o&feature=youtu.be
http://www.youtube.com/watch?feature=endscreen&v=TUt_isZFBtk&NR=1
http://www.youtube.com/watch?v=f8X8S5OcKog&feature=youtu.be
http://www.youtube.com/watch?v=hS9ue1Tb7PA&feature=relmfu
http://www.youtube.com/watch?v=MBUD-HV_bIE&feature=related
| Quote: | Originally
posted by westi
That's mad Alan.
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on October 3rd, 2012 at 07:33 PM |
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| Quote: | Originally
posted by Stanley
oh no....what now DB?
It sounded so good at jambo and Warwick.
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No dude, it is all perfect in there, 
this is just as a record of how things transpired, leading up to the jamboree.
After fixing the springs from Jambo:
http://www.youtube.com/watch?v=97mQfBRevxY&feature=relmfu
| Quote: | Originally
posted by westi
That's mad Alan.
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Stanley
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| posted on October 3rd, 2012 at 07:36 PM |
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Jesus mate don't do that 
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dragvw2180
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| posted on October 4th, 2012 at 02:29 AM |
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Man you did not create a valve train , you created works of art !!!!! Congrats on the results, Mike McCarthy
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modnrod
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| posted on October 4th, 2012 at 12:00 PM |
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6.90 @ 100???
That's quicker than my bike Dave!
It's an old girl bike, but still.
Sounds nice too man.
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on December 23rd, 2012 at 07:14 AM |
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Engine and tranny are all stripped down, and look great.
After this years runs, I have decided to advance the cam a little
to get some more lower rpm power,
and I also decided shorten the 1st thru 3rd gear ratios a little.
At both Sydney (and Willowbank testing before hand,)
the car was slow out of the hole,(1.475 best sixty, but generally low 1.50's)
with the 2.90 first gear and 4.857 diff.
At Warwick i tried the same first gear,
but with a 5.428 diff and this was just a bit too far the other way, either wheelspinning or hitting the bars too hard.(best of 1.46)
I reduced the start rpm a bit and that helped,
so I have decided to try a 3.0 first gear this year and a 2.0 second, with 1.412 third.
Engine wise, I have a fresh valve job, some new Pauter Rods,
and advanced the cam, with the valve as close to the piston as I can.
I have also added 2 Raceware 3/8 " studs from the case, right thru each rocker box floor to assist the head strength with those killer springs.
Should be ready in time if I get off the internet.
| Quote: | Originally
posted by westi
That's mad Alan.
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Doug Sweetman
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| posted on December 23rd, 2012 at 10:12 AM |
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Speechless... I'm still trying to get over the lift on your cam, let alone those rockers ..... Wow.
If you we're still playing with blown motors it would be scary !!!!
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Stanley
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| posted on December 23rd, 2012 at 03:39 PM |
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Good stuff DB...TnT before Sydney?
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on January 27th, 2013 at 07:34 AM |
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Both Stanley and I ran the test and tune on Wednesday night.
I had four passes.
It is always hard to get back into the swing of driving a manual,
after driving your 'daily' which is auto, since sept last year.
The old clutch leg takes a few runs to get sorted:
11.05 @ 124.42 lazy clutch leg in 1st gear.
10.88 @ 124.89 better but still rich
10.96 @ 124.84 lazy clutch leg and ugly all thru 1st gear
10.80 @ 125.01 much better but still rich and clutch is 'not right'.
Car is 825 KG with fatter driver.(1815 lbs)
This is within 1 tenth and 1 mph of my best,
so once I have a fresh clutch and a return trip to the dyno,
it should be sweet for Sydney.
Engine and tranny came up well with no leaks and valve train in perfect order.
Just get that tune a little closer(dyno is the only way rather than wear out the whole car),
and the potential should be close.
| Quote: | Originally
posted by westi
That's mad Alan.
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hellbugged
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| posted on January 27th, 2013 at 07:44 AM |
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20bkombi
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| posted on January 27th, 2013 at 12:51 PM |
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Good work Dave, think you should put a tv on your bonnet and get that leg built up while watching 'the big bang theory'
What changes to the clutch will you make??
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on January 27th, 2013 at 01:14 PM |
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I have decided to step up to a 200mm 3-puck from my 180mm.
The pressure plate will remain the same.
I think when it is fresh and new, the 180 works well, but is so close to its limits,
it takes one lazy foot and it wont recover.
In the past I have gotten 40 to 50 passes on the 180mm discs,
but this time it is only about 20, and it needed re-shimming in that time.
Just need to get this poor weather past and then get to the dyno before Sydney.
It is pretty close at the moment, tune-wise,
but it would be best if i can to make sure i know HOW close I am.
| Quote: | Originally
posted by westi
That's mad Alan.
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vassy66T1
A.k.a.: Marcus Vass
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| posted on January 27th, 2013 at 02:37 PM |
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The Christmas pudding should be worn off by late Feb 
Sounds like you are getting on top of the reliability of the valvetrain now. Well done
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on February 2nd, 2013 at 08:11 AM |
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I doubt the pudding will wear off Marcus, but very happy with the valve train now.
| Quote: | Originally
posted by westi
That's mad Alan.
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vassy66T1
A.k.a.: Marcus Vass
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| posted on February 2nd, 2013 at 08:17 AM |
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Yeh I know that feeling
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on February 6th, 2013 at 11:32 AM |
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| Quote: | Originally
posted by dangerous
I have decided to step up to a 200mm 3-puck from my 180mm.
The pressure plate will remain the same.
I think when it is fresh and new, the 180 works well, but is so close to its limits,
it takes one lazy foot and it wont recover.
In the past I gace gotten 40 to 50 passes on the 180mm discs,
but this time it is only about 20, and it needed re-shimming in that time.
Just need to get this poor weather past and then get to the dyno before Sydney.
It is pretty close at the moment, tune-wise,
but it would be best if i can to make sure i know HOW close I am.
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This good example of why you should get to a dyno.
As run, at 1815lbs it ran 10.80 @ 125 mph,
and it had a rich 235hp at the wheels...and i thought I was close 
Leaned it off and it made 248.8hp (close to last time 250).
Then, found we had a torched plug, when trying fresh set with wide gaps...no good, too much gap, above 7000.
Closed up the gap and made 259 @ 7800.  bring on Sydney!
| Quote: | Originally
posted by westi
That's mad Alan.
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hellbugged
A.k.a.: Daimo Pell
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| posted on February 6th, 2013 at 11:54 AM |
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259! Nice
Still the toughest sounding volksie out there by a country mile..... Love that noise!
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LIFE IN THE LOW LANE
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| posted on February 6th, 2013 at 12:44 PM |
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Great result dangerous!! Getting close to the magical 100hp per litre at the wheels!!
Where to find another 10odd hp??
[size=4] ACCEPT THAT SOME DAYS YOU ARE THE PIDGEON AND SOME DAYS YOU ARE THE STATUE[/size]
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Stanley
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| posted on February 6th, 2013 at 01:15 PM |
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Well done DB...it's all paying off
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20bkombi
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| posted on February 6th, 2013 at 01:15 PM |
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Well done Dave!!
So are you going to run syd without the boxes over the trumpets???
Still can't beleive they robbed so much power!!
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on February 6th, 2013 at 03:26 PM |
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| Quote: | Originally
posted by 20bkombi
Well done Dave!!
So are you going to run syd without the boxes over the trumpets???
Still can't beleive they robbed so much power!!
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There were numerous small changes to get the extra power,
particularly the gains below the power peak,
but the removal of my side shields was an immediate 7.9hp above 7000.
I will have to use them at Warwick with the air cleaners,
but I think they can stay in the cupboard for Sydney.
Brennden, I was not aware that 100hp per litre at the wheels was magical.
FW 100hp per litre is a good start, but 150hp/lt would be excellent,
and our Aussie pro stocker V8s make over 200hp per litre.
| Quote: | Originally
posted by westi
That's mad Alan.
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colin
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| posted on February 6th, 2013 at 05:20 PM |
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| Quote: | Originally
posted by dangerous
| Quote: | Originally
posted by dangerous
I have decided to step up to a 200mm 3-puck from my 180mm.
The pressure plate will remain the same.
I think when it is fresh and new, the 180 works well, but is so close to its limits,
it takes one lazy foot and it wont recover.
In the past I gace gotten 40 to 50 passes on the 180mm discs,
but this time it is only about 20, and it needed re-shimming in that time.
Just need to get this poor weather past and then get to the dyno before Sydney.
It is pretty close at the moment, tune-wise,
but it would be best if i can to make sure i know HOW close I am.
|
This good example of why you should get to a dyno.
As run, at 1815lbs it ran 10.80 @ 125 mph,
and it had a rich 235hp at the wheels...and i thought I was close
Leaned it off and it made 248.8hp (close to last time 250).
Then, found we had a torched plug, when trying fresh set with wide gaps...no good, too much gap, above 7000.
Closed up the gap and made 259 @ 7800. bring on Sydney!
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Cheers Col
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vassy66T1
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| posted on February 6th, 2013 at 06:07 PM |
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Excellent Dave!!!
Looking forward to the 1/4 mile times in Sydney
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Sides
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| posted on February 7th, 2013 at 07:21 AM |
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Awesome result DB !!!
Amazing those side sheets had such a big impact... would never have expected that....
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LIFE IN THE LOW LANE
A.k.a.: Brennden Alder
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| posted on February 7th, 2013 at 08:32 AM |
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To achieve 100hp per litre is something only a few manufacturers ever reach in a production car. But you've nearly reached 100hp per litre at the
wheels which is better again which is what I meant.
So the boxes around the intakes caused a definite disturbance in air flow causing mixtures to be too rich? Am I reading that correctly?
[size=4] ACCEPT THAT SOME DAYS YOU ARE THE PIDGEON AND SOME DAYS YOU ARE THE STATUE[/size]
Alder Outlaws VW Racing - check it out on fb!!
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on February 7th, 2013 at 10:02 AM |
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Jetting was the same.
My guess is that it was probably obstructed air flow or advantage-pulse damping
because it was only above 7000rpm where the gains came.
It could have been some obscure obstruction to the ideal pulse frequency,
but that is likely complicating simple things.
Unfortunately when the torched plug was found
it negated knowing any specific individual change gains,
but the end result was a combination of things.
You can do all the maths you want from the wheel number to calculate a FW hp or MPH,
but in the end, I will have to wait to run some times at the track to confirm
if I need to turn up the rev limiter for the end of the 1/4 mile.
| Quote: | Originally
posted by westi
That's mad Alan.
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DavoBuggy 1641
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| posted on February 7th, 2013 at 01:46 PM |
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Good shit man
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on February 8th, 2013 at 07:59 AM |
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| Quote: | Originally
posted by westi
That's mad Alan.
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hypo-vw
A.k.a.: Wayne Penrose
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| posted on February 8th, 2013 at 09:29 AM |
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that is very impressive Dave , well done mate !! cant wait to see you run it in Sydney
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PB - 6.33@113.07(1/8) & 9.88@135(1/4)
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westi
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what the
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| posted on February 8th, 2013 at 09:48 AM |
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nice dave,very nice.what kind of torque difference from before.
whats you advance curve look like.?
and what are the engine temps at.or is ignorance bliss.
better not knowing some times.
can't wait to see it in sydney.
down sharon.
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