Need a new transmission...so, what gear ratios?, 2.7L |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Need a new transmission...so, what gear ratios?, 2.7L |
billh1963 |
Nov 28 2015, 05:40 PM
Post
#1
|
Car Hoarder! Group: Members Posts: 3,402 Joined: 28-March 11 From: South Carolina Member No.: 12,871 Region Association: South East States |
My '72 with a 2.7 six is back.
The engine is running great. However, the gear box is so shitty it's not even worth driving. I've owned a lot of 914's and never had a gearbox so bad. I tried to go for a drive today and made it about 2 miles before I gave up and headed home. I felt like leaving it on the side of the road for the trash collector. Seriously,it's that shitty. The couple times I found second gear it wanted to crunch so I think I'm going to just rebuild it (of course all the shifter bushings and everything related to shifting will be gone through and updated). So, I've looked at several threads and even found some charts of gear ratios/rpm/speeds. For those with a 2.7 or 3.0, did you use the stock ratios? Are you happy with that? What would you change? I'm thinking of changing fifth gear to cruise around 2800-3000 rpm at 70mph. Will that give me enough fan speed to keep the oil cool? I do NOT have an external oil cooler. Tires size is 205/55-16 Any input is appreciated. Thank you |
ClayPerrine |
Nov 28 2015, 10:03 PM
Post
#2
|
Life's been good to me so far..... Group: Admin Posts: 15,469 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Mine is geared with A,F, Flipped ZD, S, ZD. I had an HB in for fifth, which gave me 3K at 80MPH, but I found that for driving at 60 mph, 4th spun the motor too fast, and the temp started to climb, and 5th spun lugged the motor, and the temp started to climb. This is with a 2.4 S cammed motor.
I put the stock /4 ZD in for 5th, and I had no temp problems after that. I have thought about using the stock /6 gear set I have, but I probably won't do that. I am trying to put a 3.6 in my car, and I am planning to use a Boxster 6 speed with it. The /6 gear set is for sale....... |
Lo-Fi Version | Time is now: 18th May 2024 - 03:01 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |