The Cal-look Lounge

Cal-look/High Performance => Pure racing => Topic started by: Fasterbrit on July 21, 2012, 22:00:15 pm



Title: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Fasterbrit on July 21, 2012, 22:00:15 pm
Just throwing this out there... I know one of the turbo town cars has come very close, but has it been done? Cheers, Matt


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: JamieL on July 21, 2012, 22:23:07 pm
Now that sounds like a challenge...! ;)


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Peter Shattock on July 21, 2012, 22:24:14 pm
I suspect you know this one from the all time top racers list its not sub 1700cc but only another 76cc and it was 16 years ago so certainly  deserves a mention!

Mika Mansukoski Finland 9.777 214.830 1776ccm T1 Alastaro, Finland May, 1996

I thought it was a typo when I first read it!

Don't forget Brian H's G dragster too which runs well into the 9's but I suspect you were thinking in a car, well worth a mention again though, and not forgetting is n/a too!

See you soon I hope,

Peter



Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Fasterbrit on July 21, 2012, 22:43:51 pm
Yeah, Mika's car was certainly fast, but as you point out it was 'big' cc :)

I would love to see a 10,000 rpm turbo 1699cc or lower. Just imagine buzzing up there with the rice burners ;) That would be awesome!


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: dangerous on July 21, 2012, 23:15:44 pm
If you go back in time to the late 1970's the fastest drag beetle in the world ran into the 9's at over 140mph.
Bob McClure's "Little Leroy" was reported to be 1700cc engine.


(http://i113.photobucket.com/albums/n216/dangerous_05/BAE.jpg)


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: speedwell on July 21, 2012, 23:33:57 pm
If you go back in time to the late 1970's the fastest drag beetle in the world ran into the 9's at over 140mph.
Bob McClure's "Little Leroy" was reported to be 1700cc engine.


(http://i113.photobucket.com/albums/n216/dangerous_05/BAE.jpg)
[attachment=1]


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Shag55 on July 22, 2012, 01:56:42 am
Awsum! Never seen that article.


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Zach Gomulka on July 22, 2012, 03:41:50 am
92x64= 1702cc. Just missed it ;)


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: richie on July 22, 2012, 09:11:23 am
92x64= 1702cc. Just missed it ;)

as 92 arent actually 92mm then 91.95x64=1700cc ;D  perfect


amazing times for what was available back then

Pete you know what you got to do next ;)


cheers richie


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Zach Gomulka on July 22, 2012, 09:14:17 am
The piston is 91.95, the cylinder is still 92 ;)

Very impressive times.


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Fasterbrit on July 22, 2012, 09:59:46 am
Richie... 91.95 bore computes to: 1,700.15933 cc, so is not sub 1700 ;)
Close, but no cigar :)


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: richie on July 22, 2012, 10:03:44 am
The piston is 91.95, the cylinder is still 92 ;)

Very impressive times.

So if I bore the cylinder say 0.5mm more does the engine size go up if i am still with the same 91.95mm piston?[yes I know if would have awfull ring seal if i did that,but it is 92s we are taling about :D ],and who knows what they were actually using back then for pistons and cylinders,custom stuff for sure :)

cheers richie


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: richie on July 22, 2012, 10:05:44 am
Richie... 91.95 bore computes to: 1,700.15933 cc, so is not sub 1700 ;)
Close, but no cigar :)

I will let John maher know his calc is not accurate enough ;)


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: Fasterbrit on July 22, 2012, 10:18:00 am
The 91.95 piston grows into the 92 bore with heat and effectively increases the cc the hotter it gets. Also, the cylinder expands, albeit at a lesser rate, so the cc I guess is constantly changing according to temperature. Only by minuscule amounts though. A constant variable. I guess for the purpose of argument the cylinder bore at room temp is the standard to measure cc. Any other measure would be subjective...


Title: Re: Has A sub 1700 cc Aircooled ever achieved a 9 Sec 1/4 ?
Post by: magic on July 22, 2012, 23:00:25 pm

If you follow the manufacturers standards, then a 1641 would be a 1600. and a 1776 would be 1800.... So easy a 1700!! ;D ;D ;D
OR.. he could reduce the combustion chamber with 1 cc. and be done with it.......... ::) :D