Beetle 1/4 Performance Calculations (etc)

modulus Veteran Volks Folk

2,009 posts · joined Jul 2003 · 27 May 2006, 6:03 pm

#493366

Something I'd like to do before I die is build a Beetle (with a beetle engine) capable of a modest 14.3 second 1/4 mile; this would make it quicker than a Ph III GTHO Falcon, if memory serves.

As it would also be for street & hill-climb duty, Im imagining an IRS pan, with a '60's body for lightness.

I invite any and all comments on:

1. Pan/body suggestions

2. Whether a T1 engine will deliver enough street-reliable HP.

3. Calculations as to what HP or cc I might need to get to the goal with an N/A engine.

4. Ditto a turbo engine.

I don't even plan to start this in the next year, but I do plan to plan it.

TIA for your contributions.

Peter Hill
1975 Type 2 Double Cab
modulus.com.au

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 27 May 2006, 7:06 pm

#493398

I am sure a Phase 3 was 14.9 secs

a solid 1916 in a stripped out beetle will pull this.

A set of webers, and some worked heads and a healthy cam

my guess is 80 ponies in a 800kg beetle will be fine

My mate was running mid 13's with a 2007cc and 135 ponies

Futue te ipsum!!!

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 27 May 2006, 7:08 pm

#493399

http://www.geocities.com/enginecookbook/menu.htm

have a look here

They post there engine make up and times

Futue te ipsum!!!

bond Veteran Volks Folk

2,456 posts · joined Jul 2003 · 27 May 2006, 8:07 pm

#493422

i reckon you could work a 1600tp to do that 1/4....

would be cool to see a stocker with bolt-ons pulling high hp...

nick

bond Veteran Volks Folk

2,456 posts · joined Jul 2003 · 27 May 2006, 8:14 pm

#493425

:P

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 · 27 May 2006, 8:26 pm

#493434

use a later bodyshell/car for road/hillclimb- they are a little heavier, but much stiffer. No door lock/poppy-openy worries and the engine bay is bigger to suit a 1600-based engine. For drags, use whatever the hell you like!

I got more than 80hp and last time I raced (full weight, std 4.1 gearing, long time ago!) I did a 16.4 at the old EC

[ Edited on 27-5-2006 by VWCOOL ]

Pay your debts, CxxT

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 27 May 2006, 9:39 pm

#493465

Easy target.

bus914 Custom Title Time!

1,230 posts · joined Aug 2002 · 27 May 2006, 11:09 pm

#493503

bond wrote:i reckon you could work a 1600tp to do that 1/4....

would be cool to see a stocker with bolt-ons pulling high hp...

bolt on an OzNos kit.

[img]https://i4.ytimg.com/vi/KOKlJpsfCyk/default.jpg[/img] Click the thumbnail for video👍

Sumo178 Casual Dubber

35 posts · joined Mar 2006 · 29 May 2006, 2:13 pm

#494197

you could get low 12's out of a 2110 fuel injected turbo

bond Veteran Volks Folk

2,456 posts · joined Jul 2003 · 29 May 2006, 4:51 pm

#494251

i love the idea of this thread - or mainly the content within it- if only the 1916 thread at the top of the thread list was a little more active...........

:jesus

nick

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 29 May 2006, 7:11 pm

#494302

Those falcons ran 100mph in the quarter.
They also had gearing to do 140mph and early seventies tyre technology.
By comparison, a 850kg VW would need 145hp (about 125 to 130 at the wheels)
With modern tyres and some low gearing that is a twelve second car (n/a).
you need to look at the speed AND elapsed time.
A bad day at the track might give slow ETs, but MPH is the true indicator of power.

[ Edited on 29-5-2006 by dangerous ]

westi wrote:That's mad Alan.

Stanley I guess the reward is in the doing of it

4,523 posts · joined Mar 2003 · 29 May 2006, 8:02 pm

#494325

Try this link.

http://www.turbofast.com.au/Drag.html

No idea of its accuracy but it gives you an idea.

lohoon Wolfsburg Wizard

466 posts · joined Sep 2002 · 31 May 2006, 6:23 pm

#495125

I thought GTs and Chargers ran 14.4s?

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 1 Jun 2006, 7:31 am

#495311

modulus

You 4 got question 5 how much time and MONEY will it require.

I would start with a IRS disc brake chassis as there lighter than a 40hp also use a 68 on body again much lighter as they used thinner steel etc etc

Is this is a purpose built car or will you want to register it for street use... if not then weight is the easiest and cheapest method to get your project going fast get your self a 1 and 2 inch hole saw and make the chassis like swiss chesse

remove all the trim and excessive wiring light blinkers wipers horn etc etc

build or buy a light weight seat the list goes on

I would like to have the time myself too many other projects to do

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Stanley I guess the reward is in the doing of it

4,523 posts · joined Mar 2003 · 1 Jun 2006, 12:31 pm

#495396

Good onya modulus...I'm going through the same thing. Had a beetle which got little use so I decided I might as well have a bit of fun with it. Now all I have to do is finsh it.

71superbug The Itch Itcher

1,184 posts · joined May 2004 · 1 Jun 2006, 8:13 pm

#495563

ian swinkles built a 1641cc turbo injected motor that would have easily run this time you are chasing i imagine.

i have read of many 1916's runnig this.

just make sure whatever you do you do it properly. otherwise you might regret it down the track.

(keyword being MIGHT)

Anthony

Beetle426 Commited Dubber

52 posts · joined Aug 2004 · 2 Jun 2006, 7:44 pm

#495956

lohoon wrote:I thought GTs and Chargers ran 14.4s?

Because of the gearing they had-the Chargers(E49) were quicker on the 1/4 mile.With modern tyres the times would drop a little more.To get a bug in the 13 teens would not be that complex-you just have to talk to people with experience and do your research-Hp costs money,so do it right the first time