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nicholastanguma Samba Member
Joined: June 29, 2009 Posts: 92 Location: LA and SF
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Posted: Sun Apr 18, 2021 1:31 am Post subject: The Right Gearbox Makes Old Engine Tech Fast Even Today |
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Back in the days when air cooled engines were still being mass produced in automobiles, most vehicles, auto and moto alike, had three or four speed transmissions. The Japanese changed that in the 60s with their 5, 6, and 7 speed moto gearboxes, at the same time they gave to the world mass produced overhead cam engine tech, too. But today transmission technology allows us to use 5 or 6 speed gearboxes in any ratios we want for the pushrod vintage stuff as well, so the fact an air cooled pushrod engine can't usually rev to 9000 or higher rpm is no longer relevant.
Here's a terrific example.
This outlaw VW Bug is sporting a naturally aspirated 1776cc VW Type 1 engine. A very hotly built Type 1 dedicated to racing, but yes, naturally aspirated nonetheless. It runs 10.9 sec at 119mph in the quarter mile.
How? That hot little air cooled engine is mated to a Hewland 6 spd sequential transaxle.
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Letterman7 Samba Member
Joined: March 14, 2004 Posts: 3198 Location: Downingtown, PA
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Posted: Sun Apr 18, 2021 6:30 am Post subject: Re: The Right Gearbox Makes Old Engine Tech Fast Even Today |
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True, but not many people can afford a $10K bespoke transmission... |
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jeffrey8164 Samba Member
Joined: January 06, 2018 Posts: 3804 Location: Georgia
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Posted: Sun Apr 18, 2021 9:08 am Post subject: Re: The Right Gearbox Makes Old Engine Tech Fast Even Today |
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Does it bolt right in? _________________ Volkswagen!
Turning owners into mechanics since 1938.
“Let he that is without oil throw the first rod”
(Compression 8.7:1) |
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67rustavenger Samba Member
Joined: February 24, 2015 Posts: 9665 Location: Oregon
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Posted: Sun Apr 18, 2021 10:10 am Post subject: Re: The Right Gearbox Makes Old Engine Tech Fast Even Today |
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jeffrey8164 wrote: |
Does it bolt right in? |
Um? No!
https://www.ultimateaircooled.com/threads/sequenti...mp;slide=0
Also the 6 speed box can't take a lot of torque. They are well suited for a mouse motor, 1776 and under. _________________ I have learned over the years.
Cheap parts are gonna disappoint you.
Buy Once, Cry Once!
There's never enough time to do it right the first time. But there's always enough time to do it thrice.
GFY's Xevin and VW_Jimbo! |
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jeffrey8164 Samba Member
Joined: January 06, 2018 Posts: 3804 Location: Georgia
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Posted: Sun Apr 18, 2021 10:40 am Post subject: Re: The Right Gearbox Makes Old Engine Tech Fast Even Today |
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Didn't think so.
I'll stick with my 3.88/.082 4th and Peloquin _________________ Volkswagen!
Turning owners into mechanics since 1938.
“Let he that is without oil throw the first rod”
(Compression 8.7:1) |
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