914 V8's: What breaks first?, Drivetrain |
|
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. |
|
914 V8's: What breaks first?, Drivetrain |
Dunc |
Jul 4 2014, 10:28 PM
Post
#1
|
Newbie Group: Members Posts: 37 Joined: 4-July 14 From: Kennewick, WA Member No.: 17,590 Region Association: Pacific Northwest |
All you v8 conversion guys. I hear all sorts of opinions as to what breaks when you convert to v8 power. I would like some opinions:
1. Axles: I hear that these are the weakest link. Replacing them with 911 shafts seems to be the "fix"? 2. 901 transmissions. When they fail, what breaks? The case? Gears/shafts? 3. What level of hp/torque is the limit of a 901 setup. Thanks. Mike |
Andyrew |
Jul 5 2014, 08:22 AM
Post
#2
|
Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
Dunc,
Rennegade hybrids has some nice axles that use VW bus CV's and adapters. Much stronger. $700 http://www.renegadehybrids.com/ For the time being you can just keep putting used axles in. Most of the time used axles are just worn from the beginning and pop from the extra stress. If you put new or rebuilt axles in you would probably not break one for years. 901 trani will be fine for a 307 or even a 302 as long as its a mild build. Building a 302 would be a great match and something I had planned on doing myself. If you keep the tires small and avoid doing burnouts and anything but driving up on a trailer in first then you'll be just fine. Biggest issues with most SBC conversions is cooling. If you dont have a cooling system in there just spend the money and buy a Rennegade hybrids setup. It works, plain and simple. |
Dunc |
Jul 5 2014, 02:49 PM
Post
#3
|
Newbie Group: Members Posts: 37 Joined: 4-July 14 From: Kennewick, WA Member No.: 17,590 Region Association: Pacific Northwest |
Dunc, Rennegade hybrids has some nice axles that use VW bus CV's and adapters. Much stronger. $700 http://www.renegadehybrids.com/ For the time being you can just keep putting used axles in. Most of the time used axles are just worn from the beginning and pop from the extra stress. If you put new or rebuilt axles in you would probably not break one for years. 901 trani will be fine for a 307 or even a 302 as long as its a mild build. Building a 302 would be a great match and something I had planned on doing myself. If you keep the tires small and avoid doing burnouts and anything but driving up on a trailer in first then you'll be just fine. Biggest issues with most SBC conversions is cooling. If you dont have a cooling system in there just spend the money and buy a Rennegade hybrids setup. It works, plain and simple. Andyrew, Thanks for your advice. A couple thoughts: 1. The 302 build I envision would include a roller rocker/roller lifter valve train, hi-volume heads (2.02 exh and 1.6 in). I expect it will make about 400 hp, but maybe 350 f-p of torque. Redline at 8k. My uneducated guess is that the 901 won't tolerate it. 2. The car already has a renegade setup. With the current 307 motor, there are no cooling issues. 3. Finally....thanks for the info on axle/cv setups. Dunc |
Lo-Fi Version | Time is now: 17th June 2024 - 10:05 AM |
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 ... |