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Author: Subject:  What has Dave Been Up To? 29th AUG 2015: 10.66@126.09mph!!
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posted on June 29th, 2007 at 07:56 PM



Quote:
Originally posted by dangerous
Well I certainly would not say I have mastered it,
but I did get the pipes to join, and they did not fall off the car last night.

It sounds great, and even idles different...who would have thought!?

Unfortunately I prefer performance , and it was sadly lacking in that department.

I was a bit sad last night on the way home because the results were not as good as I had hoped.

11.66@114.13(felt lean)
11.67@114.68(richened it up down low, (probably too much since that was the only pill-step i had for below sea level conditions) It felt better, but time cards dont lie)
11.48@116.34(took fuel out of mixture above 7000, much better)
11.70@115.77(lazy launch)
11.69@115.59(clutch slipped about a car length out, then wheel stood)

The night was very cold and it caught me out a bit with the fuel system.
As above, the last run showed clutch slip, so I will have to service that.

That is now 45 runs on this engine so I think it is time to upgrade.

I have the Dyno day on at the end of July so I will at least have to sus out the clutch before then, and then retire this combo afterwards.

I think at this stage that the smaller exhaust tubing did increase the torque down low,
but it has lost about 10hp overall on this combo.
With finer fuel system tuning I could get it to be equal,
but unless I can get those primary lengths down to the optimum of 26 to 30"(currently 34) I will have to go back to 2" plus tubes.

Thanks to Pete, Rod for the snakes (and the energy pep that they gave),
Stanley, Col, and Andrew(13BVW) for coming out in the cold for support!

[ Edited on 27-6-2007 by dangerous ]

[ Edited on 28-6-2007 by dangerous ]


Saw you out at the test & tune last night, got one photo of you racing, my camera wasn't in top condition lol. I was very impressed with the car, was the first time I had seen it run before and I had a nice little grin on my face when i saw the low 11's popping up on the timing boreds. Nice work mate :thumb
Tim
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posted on June 30th, 2007 at 06:20 AM



Hi Tim,
You should have come and said g'day.
All Volksy blokes are welcome!




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That's mad Alan.
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posted on June 30th, 2007 at 08:34 PM



Quote:
Originally posted by dangerous
Hi Tim,
You should have come and said g'day.
All Volksy blokes are welcome!


you might have even got a free muffin!!




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posted on July 1st, 2007 at 04:48 PM



Lol, I will next time I see you out there, you will have to let me know when you come out, might come out especially :P Here are the couple of good pics i got, I am pretty sure they are the High res ones, if they aren't and you would like them, PM me and i can send them to you.

http://i166.photobucket.com/albums/u91/liltimmy1300/IMG_1498post.jpg
http://i166.photobucket.com/albums/u91/liltimmy1300/IMG_1547post.jpg
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posted on July 2nd, 2007 at 07:39 AM



Thanks for the cool photos Tim.

I really like that first 'action' shot.

I have had time to go over all the numbers and realise now that despite the MPH(hp) being down on previous bests,
the ET to half track was not bad considering the track conditions and fuel tune.

The 1/8 mile ETs were all better by a tenth than previous SIMILAR 1/4 mile times.

7.37@91.61 (lean)
7.41@91.84 (way rich)
7.26@92.63 (leaned mix off up high)
7.47@92.48 (slow start)
7.44@92.44 (slid clutch off start)

Also the 60 foot times were mostly better than what I ran at Warwick, except for those runs where I stuffed the start.

1.612
1.612
1.566
1.683 (doh!)
1.654 (doh!)

Life aint so bad when you see it from a different perspective.




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posted on July 2nd, 2007 at 09:48 AM



So why the 'slow' times in the top end?

[ Edited on 1-7-2007 by humpty ]




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posted on July 2nd, 2007 at 11:24 AM



Too many muffins pre race!!!!



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posted on July 2nd, 2007 at 03:16 PM



Atleast he got to run..:sniffle:
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posted on July 2nd, 2007 at 06:02 PM



When I got to the track, the air was very good and I wanted to richen the system just a tad.
Unfortunatelyy I had no fuel pills other than a massive step which was my only option.

Other than that, the new exhaust may have moved the torque peak to a lower RPM.
=lower HP,
=lower mph.

But it(the 116.34mph run) was less than 2 mph down from my best of 118.2.




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posted on July 2nd, 2007 at 07:11 PM



Its a bloody black art what you do.... Top work Dave....



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posted on July 3rd, 2007 at 02:18 AM



Look forward to see more posts Dave. Its great to see the potential from vw motor even if it costs. I would like to see your car in person if I can get to the coast. Do you have any videos posted?
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posted on July 3rd, 2007 at 06:12 AM



Here is a good one from Alan : 11.40 winning the final at the Mini Jam.

http://s10.photobucket.com/albums/a145/Dasdubber/?action=view¤t=P101004...

And some burnouts filmed by Stanley!

http://s76.photobucket.com/albums/j37/stanley111/?action=view¤t=DaveBur...




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That's mad Alan.
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posted on July 3rd, 2007 at 06:45 AM



nice clips Dave the engine sounds strong



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posted on July 3rd, 2007 at 06:36 PM



Strong!!! It's the Hercules of flat 4's on the strip( starts doing the Hercules,Hercules, Hercules chant from The Nutty Professor!!):smilegrin::smilegrin:



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posted on July 3rd, 2007 at 08:16 PM



Quote:
Originally posted by LIFE IN THE LOW LANE
Strong!!! It's the Hercules of flat 4's on the strip( starts doing the Hercules,Hercules, Hercules chant from The Nutty Professor!!):smilegrin::smilegrin:


hey,
a cutomer of mine is building a turbo bug called Hercules.

cool logo too, I'll ask him if i can post the logo.


But yeah, Daves car is tuff !




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posted on July 6th, 2007 at 07:13 AM



Tappets needed no adjustment,
and oil filter is clean for the dyno day on the 28th of July.

It is on at:

Custom Exhaust Specialist
2/78 Nestor Dv
Meadowbrook
QLD
8am to 1pm.




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That's mad Alan.
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posted on July 6th, 2007 at 09:00 AM
Starts


Hi Dave,

I'm enjoying following your post.

I looked at the pictures above and I think the new rear guards without the tail lights look really nice. Its a much cleaner look.

On the video I though the start looked very clean and rapid. There didn't seem to be a lot of suspension movement and the car looked nice and straight. I bet it has taken a lot of work to make it look so simple.

How much clutch should you use on a start? I heard a guy from Competition Friction saying that he teaches the V8 Supercar Drivers to do starts. He said a good start uses the clutch for about 2.5 seconds up to about 70 km/h. He said the guys that do poor starts spin the wheels and lose a few places.

With that in mind I let out the clutch too fast, get a bit of wheel spin and I've never ever smelt the clutch.

Would you recommend using a bit more clutch than just dumping it? I suppose having an open diff would make a difference because the wheels spin easily and its harder to bog down the engine.

Keep up the good work.

CYA CT




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posted on July 6th, 2007 at 05:31 PM



Leaving the start is a bit touchy some times.
You need to have JUST enough clutch clamp,
and RPM,
to match the torque,
at the rpm that you like to use.

I currently use a three puck that is only 180mm diameter,
but it has a fairly high clamp force of 2700lbs when new.

With my old blower engine you could leave the line smooth and fast from an idle,
but now with this normally aspirated engine it needs at least 5000 rpm too leave the line hard.
If you either have too little rpm,
or do not slide the clutch it will bog the engine down.

If the clutch never wore out,
you would set the pressure so that it just slips a little going into 4th gear,
but I have set it at maximum now and it probably lasts about 30 to 40 runs before needing surfacing
and re-setting of the clamp height (with the built-in spacers).

I think with road radials you may be able to get one wheel to spin off the start, but on a sticky start line and with slicks, the clutch normally does the work,
unless you pump up the tyres quite hard.

Unfortunately you have to use a set-up that works,
or can be made to work for different conditions
through out the day or at different tracks through the year.

As an example, The big jamboree typically has excellent track but poor air(HP) until the night comes,
and then a cold winter Test and Tune will have a slippery cold track
but more HP.
So many variables, but you just deal with it on the day.

Consistent 60 foot times generally make for a very consistent car, even if you dont quite get your shift points right.

[ Edited on 28-7-2007 by dangerous ]




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posted on July 8th, 2007 at 07:47 AM



Are you running an open diff in your car Dangerous??



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posted on July 8th, 2007 at 08:17 AM



Yes Brennden, open centre.
Albins chromoly that I lightened a bit.

Do we need a muffler for the dyno day?




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posted on July 9th, 2007 at 12:01 PM



Nah. Noise is noise and your car isn't that noisy as some I have heard on the dyno at CES.

not long to go now... only a couple of weeks before DYNO MANIA!!!!!!




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posted on July 10th, 2007 at 09:39 AM
Starts.


Thanks for the explanation Dave.

So your clutch glazes over or burns or something? Is that why it requires resurfacing?

Is your pressure plate drag race only item? Do normal pressure plates have the adjustment you mentioned?

I'm surprised you run an open centre diff. But it still spins both wheels when you do a burn-out doesn't it?

Sorry I'm such a novice, I should probably start a drag racing 101 post.

CYA CT




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posted on July 10th, 2007 at 01:38 PM



No worries CT.
Ask anything you want.
The pucks on the disc wear down and it loses pressure,
but also the shoe on the clutch can get warped
(as can the FW) with the heat that can be developed.

The clutch on my car is much the same as most things on my car, home made.
Where a standard clutch bolts down to the step on the FW,
mine sits on spacers that I can either shim up,
or machine back to control its installed height.

You could use the clutch on the street with the right disc,
but it does rattle a bit when disengaged.
It uses a conventional diafragm rivetted into the cover(Holden diafragm I think),
and a shoe that floats like most muli-disc deals.
(but mine is a single disc & dual when boosted)

Yes it sometimes spins just one wheel in the burnout,
but once you get them spinning the other one usually catches up
as the first one gets sticky.

This can be hard on the spider gears and shafts,
but I added more clearance on the shafts and extra oil holes in the diff.




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posted on July 10th, 2007 at 04:36 PM



One wheel spins and gets sticky so the other one starts to spin too or instead. That makes sense.

I took a video some years back at the Wednesday night off-street drags at Eastern Creek raceway that demonstrated that but I didn't realise that is what was happening.

Here's a bit of a yarn. If I can find the video I'll have a go at posting it on youtube. It's really cool.

I had a metalic brown cal-look oval as a daily driver. Greg Ward and I thought it would be fun to bolt his spare 1916 in the car and have some fun at the drags. He said I should drive because it was my car. But I maintained he should drive because it was his engine: and he tends to drive it like he stole it.

The car had hard-as-a-rock 165R15 Remington cheapie brand tyres. Greg selected second gear in the stock 4.12 box on the burn-out bit and gave the engine 7000 and dropped the clutch.

In the video you can see smoke coming out from the driver's side guard and then the engine not changes and smoke starts coming out of the passenger side guard and then the car disappears in tyre smoke. You can hear the other spectators laughing and the commentator saying "That's a very tough little beetle".

There was a Charger in the other lane waiting for the beetle and the smoke to clear. When the lights went green the beetle took off at high revs and the tyres just make a slight screech for maybe half a second and it took off. The race looked close from where I was and the commentator said "I tell you what it looks pretty close at half track" and you could hear the surprise in his voice.

The charger ended up winning and the oval did a 14.9.

There was so much rubber inside the guards and inside the rear bumper at the end of the evening. But the tyres gripped better after that.

CYA CT




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posted on July 16th, 2007 at 06:23 AM



Cool story!!

It will be good to catch up with all you guys again at Warwick this year.
It is going to be an awesome event.

I have the dyno-day and then the Jamboree to get through first however.




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That's mad Alan.
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posted on July 16th, 2007 at 10:07 PM



Damn
I watched that clip of that kraut of yours Dave about a dozen times in a row.

It just leaves so well!

Awesome stuff M8! Ive read so much stuff on your ride but thats the first bit of footage ive spotted.
L8tr
E




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posted on July 18th, 2007 at 06:40 PM



Well, next event is the dyno day on Saturday the 28th.

I have fitted some radial tyres to some 7" rims, 225/60-15 Dunlops,
so as not to wreck my slicks,
and have left the combo as I ran it last except for some minor fuel system adjustments.

I would like to see 190@the wheels,
but this all depends on the dyno and what the correction factors are.

Last time I ran, it did about 116.5 mph and weighed 1775lbs (807kg OH CRAP that is heavy!).

So I will report back at that time to see what happens.
Most interesting thing for me, will be the RPM at which peak toque and power occur.




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posted on July 19th, 2007 at 06:50 AM



Quote:
Originally posted by dangerous
Well, next event is the dyno day on Saturday the 28th.

I have fitted some radial tyres to some 7" rims, 225/60-15 Dunlops,
so as not to wreck my slicks,



Now all you have to do is resist the urge to bag these tyres up out on the street.
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posted on July 19th, 2007 at 11:02 AM



Quote:
Originally posted by Stanley
Quote:
Originally posted by dangerous
Well, next event is the dyno day on Saturday the 28th.

I have fitted some radial tyres to some 7" rims, 225/60-15 Dunlops,
so as not to wreck my slicks,



Now all you have to do is resist the urge to bag these tyres up out on the street.


Bloody trouble maker!:kiss




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posted on July 28th, 2007 at 02:53 PM
217@Wheels!


Who would have thought!
Great day!
Thanks to Brennden, Peter, and Trevor@ 'Custom Exhausts'.
Thanks also to Alan Agyik for sponsoring the trophy for my class.
'Pacific Hearing' is Alans business if you need some stuff related to this area....I might have to get a hearing Aid after today!

[ Edited on 28-7-2007 by dangerous ]




Quote:
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That's mad Alan.
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