Doug Sweetman Nil Bastardo Carborundum
2,128 posts · joined Sep 2002 ·
Thanks Dave - itching to give it a run now ?
What has Dave Been Up To? 29th AUG 2015: 10.66@126.09mph!!
Stanley I guess the reward is in the doing of it
4,523 posts · joined Mar 2003 ·
DB that's a fantastic result. I know all the hard work that's gone into this.
colin Fahrvergnugen
984 posts · joined Mar 2007 ·
Can really appreciate the research and thought process that went into this result.
Well done Dave, love your work.
Cheers Col
Well done Dave, love your work.
Cheers Col
westi what the
1,610 posts · joined Aug 2005 ·
that's cool as dave,i bet your as keen as mustard to give it a crack.
you have been busy .
you are coming down for the sydney meet then i take it,who else is making an apperance.
love the new ignition set up.
can't wait to see it in action.
you have been busy .
you are coming down for the sydney meet then i take it,who else is making an apperance.
love the new ignition set up.
can't wait to see it in action.
down sharon.
DavoBuggy 1641 Officially Full-On Dubber
359 posts · joined Nov 2008 ·
Awesome Mr Butler!!😂
dragvw2180 Officially Full-On Dubber
393 posts · joined May 2006 ·
It would be interesting to install the old heads with everything else the same as now and compare the differance before replacing the pistons. Mike
modulus Veteran Volks Folk
2,009 posts · joined Jul 2003 ·
Excellent result; getting 93 HP/litre out of an air-cooled, 2-valve, pushrod engine is quite an achievement.
I am curious about the boxes which surround the air intake ram tubes, especially in view of the rather turbulent-looking fuel standoff. I wonder if the boxes are interfering with the air flow into the ram tubes; it would be interesting to test this on a flow bench, though I admit I don't have any hard evidence or direct experience of such interference. The only reason that I have some doubts about the layout is that the air-flow pattern into ram tubes is established well away from the mouths of the tubes themselves (ditto for NASA ducts, scoops etc.).
hth
I am curious about the boxes which surround the air intake ram tubes, especially in view of the rather turbulent-looking fuel standoff. I wonder if the boxes are interfering with the air flow into the ram tubes; it would be interesting to test this on a flow bench, though I admit I don't have any hard evidence or direct experience of such interference. The only reason that I have some doubts about the layout is that the air-flow pattern into ram tubes is established well away from the mouths of the tubes themselves (ditto for NASA ducts, scoops etc.).
hth
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
My flow bench shows no ill effects,modulus wrote:Excellent result; getting 93 HP/litre out of an air-cooled, 2-valve, pushrod engine is quite an achievement.
I am curious about the boxes which surround the air intake ram tubes, especially in view of the rather turbulent-looking fuel standoff. I wonder if the boxes are interfering with the air flow into the ram tubes; it would be interesting to test this on a flow bench, though I admit I don't have any hard evidence or direct experience of such interference. The only reason that I have some doubts about the layout is that the air-flow pattern into ram tubes is established well away from the mouths of the tubes themselves (ditto for NASA ducts, scoops etc.).
hth
but it is only a guide as to what is really going on,
so I also believe there is always room for improvement.
I know better than most, that the flow bench does not tell the whole story,
so for this reason i plan to wait until i can try it at the track
(which is the whole point of all this), before making any more changes.
I feel the high nozzle position is ONE reason for the EXCESSIVE standoff.
I was actually trying to create SOME stand off, but now I have to find a nice medium that will still give me the atomisation i was after.
New manifolds are in the planning stage, which will allow me to continue in the search for the potential of these heads.
...just need some clear skies now for a test and tune.
westi wrote:That's mad Alan.
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
Unfortunately my old heads(formely from speedway use) are past their use-by date,dragvw2180 wrote:It would be interesting to install the old heads with everything else the same as now and compare the differance before replacing the pistons. Mike
but yes it would be good to try them again with the new found secrets of power.
I would also like to re-fit my old cam to try as well.
....too much stuff to do and not enough time!!
westi wrote:That's mad Alan.
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
4 runs from 5.12pm to 7.01pm:Doug Sweetman wrote:Thanks Dave - itching to give it a run now ?
11.413@120.62 (missed 3rd)
10.848@122.76 (6.866@99.4mph)
10.800@123.37 (6.841@ 99.68mph)
10.775@123.75 (6.832@100.17mph)
was running a bit leaner than the dyno,
so room to improve,
but good to go for Sydney in two weeks.
http://www.boostcruising.com.au/forums/index.php?showtopic=802347
westi wrote:That's mad Alan.
reub VWRX is gone...
2,054 posts · joined Sep 2002 ·
Cool Dave.
Bring on Sydney👍
Bring on Sydney👍
Reub
vassy66T1 Wow ... are U reading this?
2,120 posts · joined Jun 2003 ·
Nice going Dave.
I thought the storm was coming sooner so didn't head out to see 😢
I thought the storm was coming sooner so didn't head out to see 😢
Sides Veteran Volks Folk
2,220 posts · joined May 2007 ·
Yeah, great result DB !!!
Each run being an improvement is a good sign too...
👍
Each run being an improvement is a good sign too...
👍
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
I forgot to mention a big thank you to Darren Krewechuk from Canada, for his advice,dangerous wrote:with the new found secrets of power.
and a lead on some tips from
Darren Morgan at Reher Morrison Race Engines. (his exhaust port "rules of thumb") 👍 🙂
westi wrote:That's mad Alan.
drgouk Slammed & Awesome Dubber
92 posts · joined Mar 2009 ·
Could you share these rules of thumb?dangerous wrote:I forgot to mention a big thank you to Darren Krewechuk from Canada, for his advice,dangerous wrote:with the new found secrets of power.
and his lead on some advice from
Darren Morgan at Reher Morrison Race Engines with his exhaust port "rules of thumb".👍
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
No. 😂
westi wrote:That's mad Alan.
Dak-A-Tak Volksie Pete
1,381 posts · joined Jan 2004 ·
Maintance all done , hows the clutch look , any sign where sparks from ?
Lisa is taking her camera .
Lisa is taking her camera .
vassy66T1 Wow ... are U reading this?
2,120 posts · joined Jun 2003 ·
Only a week to go ... kick arse Dave 👍
Doug Sweetman Nil Bastardo Carborundum
2,128 posts · joined Sep 2002 ·
Nice strong consistent times Dave, top work. A buck twenty four mph is pretty fkn fast in my books too !!
Would this car meet andra super street rules ? Just thinking based on times it would be in the top half of super street field in Perth......
Would this car meet andra super street rules ? Just thinking based on times it would be in the top half of super street field in Perth......
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
ANDRA Super Street is up to 11.00 seconds,
and then after that, from 10.99 and faster, you go into Super Sedan.
Yes the car and driver are ANDRA legal to run in Super Sedan now.
and then after that, from 10.99 and faster, you go into Super Sedan.
Yes the car and driver are ANDRA legal to run in Super Sedan now.
westi wrote:That's mad Alan.
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
Hey dude,Dak-A-Tak wrote:Maintance all done , hows the clutch look , any sign where sparks from ?
Lisa is taking her camera .
no obvious sources of spark, but i hit everything in the drive train with an eagle eye.
The outer 930 CV flange was very close to the IRS arm, so now it has more clearance.
Brakes are clear too. The spring plate bolts are close to the wheel, but have never rubbed.
Perhaps some sparks from the exhaust slip joints on the rev limiter?
The clutch looked good but had about 0.3mm wear in 13 runs and dyno time,
so adjusted the spacers.
All set for Sydney!
westi wrote:That's mad Alan.
westi what the
1,610 posts · joined Aug 2005 ·
You are a machine . Have a safe trip to you and all the boys from the sunny state.
Can't wait to see the new combo in action.
Can't wait to see the new combo in action.
down sharon.
Dak-A-Tak Volksie Pete
1,381 posts · joined Jan 2004 ·
Sounds good .
Watch him Dave ! he is being to nice , to you !
Watch him Dave ! he is being to nice , to you !
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
WOW! What a great long week end the Sydney trip was!
Left home at 6am on Friday morning and was home by 5.38pm on Sunday arvo.
It was great to catch up with everyone,
but unfortunately I was busy working on the car most of the day!
I did however, get a personal best eventually, of 10.70 @ 126.1 MPH,
but on my first run I broke a #3 exhaust rocker so that run was dismall(sp?).
Thanks to Mike Kristen, we went back to Penriff, and stole the rockers off the CBB ghia.
As soon as I started the engine, it sounded a little off, but oil pressure was good, as was the throttle response,
but a 12.19 @ only 109.56 told me something was sad.
Both the rockers on #4 had now just failed, and so that pass was a 3 cylinder one.
Interesting is that the speed equated to 183HP and 7220rpm.
Two more rockers, and the car was back to its old self.
With a guess tune up on the fuel system for some new nozzles,
it went 10.704 at 126.10 mph, which made all the hard work worth while.
It was good also to know that it was not a totally clean pass, so there is more room yet for improvement!
The 126.1mph speed equates to 279 FW HP and 8311rpm in 4th gear
My last run was all over the track, since I had not checked the wheely bar adjustment all day,
and it was aborted to save the car. 13.3 at 95 or so.
Photos courtesy of Reub. 👍
Left home at 6am on Friday morning and was home by 5.38pm on Sunday arvo.
It was great to catch up with everyone,
but unfortunately I was busy working on the car most of the day!
I did however, get a personal best eventually, of 10.70 @ 126.1 MPH,
but on my first run I broke a #3 exhaust rocker so that run was dismall(sp?).
Thanks to Mike Kristen, we went back to Penriff, and stole the rockers off the CBB ghia.
As soon as I started the engine, it sounded a little off, but oil pressure was good, as was the throttle response,
but a 12.19 @ only 109.56 told me something was sad.
Both the rockers on #4 had now just failed, and so that pass was a 3 cylinder one.
Interesting is that the speed equated to 183HP and 7220rpm.
Two more rockers, and the car was back to its old self.
With a guess tune up on the fuel system for some new nozzles,
it went 10.704 at 126.10 mph, which made all the hard work worth while.
It was good also to know that it was not a totally clean pass, so there is more room yet for improvement!
The 126.1mph speed equates to 279 FW HP and 8311rpm in 4th gear
My last run was all over the track, since I had not checked the wheely bar adjustment all day,
and it was aborted to save the car. 13.3 at 95 or so.
Photos courtesy of Reub. 👍
westi wrote:That's mad Alan.
dragvw2180 Officially Full-On Dubber
393 posts · joined May 2006 ·
Congrats on the 279 hp, have you figured out what caused the rocker problem ? Mike
dangerous 23 Windows of Awesome
5,901 posts · joined Jan 2005 ·
Hi Mike,
I will have to talk with Heads upPerformance,
but I think I may have done the damage when I first installed them.
I have since found that springs installed TOO FAR from coil bind can have spring surge,
and this may have occurred when I was too afraid to run the springs so high in tension.
Normally damage will not occur, but with the other springs having so much rate, the surge may have hammered them.
I will have to talk with Heads upPerformance,
but I think I may have done the damage when I first installed them.
I have since found that springs installed TOO FAR from coil bind can have spring surge,
and this may have occurred when I was too afraid to run the springs so high in tension.
Normally damage will not occur, but with the other springs having so much rate, the surge may have hammered them.
westi wrote:That's mad Alan.
vassy66T1 Wow ... are U reading this?
2,120 posts · joined Jun 2003 ·
It was good to see you get a good run in (if only one) after the effort not just to get there, but to repair as well.
humpty Bishop of Volkswagenism
3,336 posts · joined Sep 2002 ·
An amazing weekend for sure.... Great to catch up with you again Dave after all these years.... And just like the old times, watching you and "Pete's old car" smack out those amazing numbers was truly awesome....
Long may it continue!
Long may it continue!
dragvw2180 Officially Full-On Dubber
393 posts · joined May 2006 ·
This is a video which compares and shows valve float and surge if anyone wants to see it, Mike
http://www.engr.colostate.edu/~dga/high_speed_video/mechanisms/MERC_valve_spring_tests_coils_removed_3500-6000rpm_1000fps.wmv
http://www.engr.colostate.edu/~dga/high_speed_video/mechanisms/MERC_valve_spring_tests_coils_removed_3500-6000rpm_1000fps.wmv
Stanley I guess the reward is in the doing of it
4,523 posts · joined Mar 2003 ·
What's doing DB......been quiet at Reedy Creek