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Engine Question
airkewld - July 20th, 2007 at 03:56 PM

Hello i am new to the drag racing scene and have a few questions if anyone could help. I would like to build a street car to run mid 11s N/A. Was wondering what hp output would i need to produce these times. Also what would the weight be roughly of a 1969/70 model bug after it has been modified engine wise. Any help would be much appreciated. Also have been checking out aussie dubs such as dave butlers and rod richardsons and was just curious as to whether what horsepower these are producing at the wheels. cheers


rufbug - July 20th, 2007 at 07:21 PM

lets start with about 250hp, and correctly tweaked / setup chassis / gearbox.


dangerous - July 20th, 2007 at 07:55 PM

It is hard to say what weight your bug would be because of all the
extras and such that you might want to add for strength and saftey.

But just for interest, my bug is currently 1775lbs (807kg),
and I think Rods was about 1750lbs (795kg) before his new roll cage.
Dave Becker's car was around 1850lbs (841kg) from memory
This includes the drivers, so I would guess yours to be around this unless it is a lightened drag car.
With my best speed of 118.2mph the engine was making just under 229hp and about 199 at the wheels.
With Rods best speed of 112 mph, I would guess it to have around 192 hp and 167 at the tyres.
This is on Dyno-Dynamics brand dynos in shoot-out mode,
and are 'corrected' figures.


Craig Torrens - July 20th, 2007 at 08:01 PM

I think Beckers was/is around 143hp at the wheels.


airkewld - July 20th, 2007 at 10:29 PM

Awsome thanks guys for your help. So do you think it would be possible for a normal nonlightened bug (1969/70) to get into the 11 second time bracket with about 200 hp at the wheels?


dangerous - July 21st, 2007 at 05:30 AM

Yeah, I reckon it will do it no worries.
Is yours the orange one?


airkewld - July 21st, 2007 at 04:28 PM

lol yeah it is just didnt really wana say too much. It is mine and my dads. Was just asking a few questions from the pros as i am new to it all and was just getting advice to see if it was possible to get my goal of 11s. Was just unsure if the weight of the car would hold me back. Anyhow thanks for your help once again.


dangerous - July 21st, 2007 at 05:13 PM

I would love to hear some details of your car and its previous combinations.
As would other drag racing VW guys.
I could just ring Mike, but he would probably check with you first anyhow.

What did it make at the wheels,
and what other details like tranny and suspension does it have?
Any pics?(if pics are trouble, emailthem to me and I can post them).


airkewld - July 22nd, 2007 at 12:10 PM

Hello again. Well we did have a 2276cc with 44 idfs which was quite potent but we did not have the tranny hardware to give it a hard run. It was an awsome engine to begin with but decided we wanted to go faster. So we went with this final combination. 2442cc with 51.5 IDAs ( 52s maybe), cb comp eliminators 48x40, 88mm Bugpack flanged crank, 94mm AA performance pistons, FK89, Pauter Rockers. These are just a few specs from the top of my head. We had the gear ratios changed with a 3.88. Not sure on the exact gear ratios. When on the dyno she produced 199.5 hp atw on pump gas and full exhaust with more still to come. The car is fully registered and our goal was to have a street car to run 11s. Just to give it to alot of the japanese sports cars. Narrowed front and shorter rear axles and all neccessary parts to push it hard. As yet we do not have any photos but will try get some soon. Mike built our last motor and again with this one. Mike has done an unbelievable job and always thinks outside the square. Full credit to Mike and staff we are very happy and cant wait to see what it runs.
Its great to see your race car and what can be achieved. Hope to see and meet u at a meeting some time.


nbturbo - July 22nd, 2007 at 04:21 PM

I'm fairly sure Adam Deb's been into the 11's with his old 1915 Turbo motor.


airkewld - July 22nd, 2007 at 04:37 PM

awsome what power did he have to do that


dangerous - July 22nd, 2007 at 05:20 PM

Also Peter Page drove Rod's car to an 11.96 with less power than it has now.
I think mid to low elevens are quite achievable on slicks.
Look forward to meeting you also.


airkewld - July 22nd, 2007 at 06:32 PM

Thats great, was hoping to hear that. Now i just need to get a set of slicks and hopefully produce some of these 11 second times. cheers


HGFS - July 23rd, 2007 at 01:33 PM

Quote:
Originally posted by nbturbo
I'm fairly sure Adam Deb's been into the 11's with his old 1915 Turbo motor.


From memory I think he pulled 11.88 at Heathcote and had something like 215 at the wheels at our club dyno day a while back before the car was rebuilt


Turbo54 - July 23rd, 2007 at 03:38 PM

11.88 @ 110mph on a 33 degree day, not the best temps for racing. It made 220hp on the treads.
The car was fairly stripped inside and no bumpers, no back seat, 3" weld wheels on the front and slicks made for a pretty light car.
Wish I got to go for a ride before it was turned into a classic race car.
T54


david777 - July 23rd, 2007 at 11:16 PM

Well airkewld, please let us know when you are heading out to WSID to try it out.


dangerous - July 28th, 2007 at 04:44 PM

Quote:
Originally posted by dangerous
and I think Rods was about 1750lbs (795kg) before his new roll cage.

With Rods best speed of 112 mph, I would guess it to have around 192 hp and 167 at the tyres.



What did it make Rod?!


LIFE IN THE LOW LANE - July 28th, 2007 at 04:49 PM

Ahh your a funny man Dangerous and pretty damm good at guessing numbers too....


Dasdubber - July 28th, 2007 at 06:10 PM

Bloody hell - you guessed the oval within 0.1hp.....and predicted Rod's within a bees dick as well! You da man so they say Dave!


vwpizza - July 29th, 2007 at 10:13 PM

Gday Airkewld,
Dean here, I brought the 2276 of your dad .What do rekon will we go to WSID this Wednesday and show em what aircool is all about......:thumb


airkewld - July 30th, 2007 at 03:00 PM

hey dean how u doin? Yeah for sure we will find out off mike asap to see if she is ready. Talk to u soon


airkewld - July 31st, 2007 at 08:17 PM

Hey dean its ONNN!! see u wednesday


vwpizza - July 31st, 2007 at 11:36 PM

[Great, I am so looking forward to it. i want see what this new one of yours is gunna do and mine of cause:thumb:thumb

[ Edited on 31-7-2007 by vwpizza ]


westi - August 2nd, 2007 at 11:51 AM

how did you guy's go.


airkewld - August 2nd, 2007 at 01:06 PM

Hey well my orange beast managed a 12.5 with muffler and et streets however top gear was a bit tall ( as we wanted this for street use). This will be now changed to get the mph up and hopefully et down. This time was produced after 2nd pass ever! Was very fun night blowin the doors off most cars. If Deans around i will let him let u guys know how he went.


dangerous - August 2nd, 2007 at 01:38 PM

Gotta tell us the speeds also at 1/2 track and the end.
Awesome effort for first time out.


airkewld - August 2nd, 2007 at 01:50 PM

87.6mph and 103.75mph


westi - August 2nd, 2007 at 02:12 PM

that's pretty cool,what about the finer details,60 ft.half track and miles.
i was going to bring out the shitter for a laugh,but i had to much work on.
next time you are going out i would love to come and watch some vw's kickin ass,so keep us posted.


vwpizza - August 2nd, 2007 at 05:22 PM

Quote:
Originally posted by airkewld
Hey well my orange beast managed a 12.5 with muffler and et streets however top gear was a bit tall ( as we wanted this for street use). This will be now changed to get the mph up and hopefully et down. This time was produced after 2nd pass ever! Was very fun night blowin the doors off most cars. If Deans around i will let him let u guys know how he went.

Thanks Chris,My night was pretty uneventful..Had one pass but the axel tramp I had first time out was still there.So i didnt even really have a run as I pulled the car up..So back to the drawing board..It was great seeing Glen Having good runs first time out.still plenty in it yet.....


airkewld - August 2nd, 2007 at 07:38 PM

Yeah dammm that sucks. Hopefully soon u will get a good hard run out of her as there is plenty left in her also i believe. Yeah we were happy with the overall result of the night but hopefully we get more out of it yet as well. Will speak to u soon