Are the gears in a 914 (3.091, 1.889, 1.261, .9295, .7097 with a R/P 4.429) a suitable combination for a 2160cc engine? How does it compare to the Intermeccanica supplied transmission with a 3.44:1 final drive ratio?
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http://www.teammfactory.com/ca.../0/0/3600/3600/1/0/2
I've put the 914 gears against a VW trans with 3.44 r&p, stock 1st and 2nd, early (closer) 3rd and slightly shorter 4th. As you can see, the 914 5 speed is pretty well spaced, with that spacing getting progressively shorter as you shift higher. The 914 trans would do well in a larger than 2 liter engine'd car. Al
I don't know what 1st gear was in our '74 914 but it was too tall. The gutless 2.0 engine had a hard time getting it out of it's own way from a stop.
Will Hesch posted:I don't know what 1st gear was in our '74 914 but it was too tall. The gutless 2.0 engine had a hard time getting it out of it's own way from a stop.
MOST VWs/PORSCHEs have TOUGH time getting moving in First/second....one needs patience but THEN..BOOM...3rd gear is here!
The engine size does NOT have a whole LOT to do with it....
Remember the 914 trans goes behind the engine so flipping it in front of the engine results in 5 reverse gears and one forward. The R&P has to be flipped. And a 912/911 901 nose cone (and bits) is needed to mate to a Porsche 5 speed shifter.
http://www.superbeetlesonly.co...5-flipping-a-914-rp/
I had a 1.7L 914 and the trans was perfect. Had a good high cruising speed without high RPMs plus gave great gas mileage. Lower profile tires (65) will make it tad faster off the line vs the original 165/80x15.
If you're looking for acceleration from a standing stop then the long 1st gear Porsche equipped a lot of their aircooled cars with (in this case- 4.429 x 3.091=13.69 final drive) is probably not for you. For someone that likes to zip around town, VW's late type 1 ratio (3.88 x 3.78 1st= 14.66) is slightly shorter and a good compromise, especially with a 2 liter and under engine. I wouldn't recommend the aftermarket 3.44 r&p (3.44x3.78= 13.00) unless the engine was close to 2200 cc's or larger.
I disagree, Banzai, engine size is a part of the equation. It just depends on what your priorities are. Al
hbkmat posted:Are the gears in a 914 (3.091, 1.889, 1.261, .9295, .7097 with a R/P 4.429) a suitable combination for a 2160cc engine? How does it compare to the Intermeccanica supplied transmission with a 3.44:1 final drive ratio?
A social "impass" will arise about 5 pages from now on this topic. Some guys need / cannot resist less than that.......there will be no real answer.....enjoy !
Has anybody made the switch? Curious how it compares to a VW pan mod.
WOLFGANG posted:Remember the 914 trans goes behind the engine so flipping it in front of the engine results in 5 reverse gears and one forward. The R&P has to be flipped. And a 912/911 901 nose cone (and bits) is needed to mate to a Porsche 5 speed shifter.
http://www.superbeetlesonly.co...5-flipping-a-914-rp/
I had a 1.7L 914 and the trans was perfect. Had a good high cruising speed without high RPMs plus gave great gas mileage. Lower profile tires (65) will make it tad faster off the line vs the original 165/80x15.
same transmission they run in the French tanks:}
True story... My first car was a '74 914. Got it for $2,400 in the summer of 1983.
I always had a hell of time getting it going in first gear... Until I realized I was starting in 2nd gear. I had no idea it was a five-speed with a dog-eared first gear.
hbkmat posted:Has anybody made the switch? Curious how it compares to a VW pan mod.
IIrc the bellhousing bolts to the yoke (the mount on the end of the frame horns) just like a VW trans. The front mount has to be fabricated, and as Greg mentioned, you need a 901 nose cone and shifter. There may be a little frame horn clearancing for the cv's?
The 2 issues with that era trans- 1st is not part of the H pattern, and the Porsche syncros of the time are not as smooth/fast shifting as a VW trans. Al
There is a good article on putting a Porsche 901 trans in a bug pan. It requires an IRS pan! I'll provide link. 901 trans are getting hard to find and are costly to rebuild. It does mount to VW frame horns but you have to drill bell housing for the rubber mounts. There is a place in Europe that makes a conversion kit with nose cone, fork and front carrier - it big Euros.
The 914 gears do fit the 901 trans housing so there a cheaper (used) source of gears for a rebuild. You want the early 914 trans (up to 73) which is called a tail shifter (although shift is on side). The later 914 trans is called a side shifter and is more costly and more difficult to convert. It also takes the 914 starter or a VW semi-auto self supporting starter. And a little work on the 914 CV coupler.
http://www.aircooled.net/vw-tr...-5-speed-conversion/
Here's very detailed article on using the 914 version of the 901 trans in a VW pan.
http://www.germanlook.net/foru...howthread.php?t=9153
It was always on my "to do" list - I had trans, starter and shifter but sold to Schu when I retired from VA to FL. (Ha,not sure I would have ever gotten to it - I also have a 1.8 and 2.0L T4 engines with dual carbs - sitting).
And here's link to the German company-
http://www.bugat5speed.de/en/b...transmission-901-914