Light weight batteries?
11-15-2003, 05:51 PM
#1
Racer
Thread Starter
Light weight batteries?
Considering where and why Porsche placed the battery where it is on a 928, would a light weight battery work? Would it be helpful if weight had already been taken off the front? Would it cause more vibration for the transaxle?
Or should you just stick a "yellow top" back there and know that you'll always have enough reserve power?
What have others found or thought on this topic?
Or should you just stick a "yellow top" back there and know that you'll always have enough reserve power?
What have others found or thought on this topic?
11-15-2003, 07:51 PM
#2
Pro
I have been running my sons 914 battery in my 78 for 2 days. cranks just as fast and charges smack dab in the middle of the gauge. 450 cold cranking amps. I am going to get one of them Hawke dry cells only 15 pounds.
11-16-2003, 12:29 AM
#3
Racer
Thread Starter
Joe,
This is exactly to my question. Do you think that running a 15lb battery is going to be helpful or detrimental to the cars ride quality? I have ran a light weight battery in large displacement engined cars before and that is not my concern...good luck in the past. My question is to the dampening effect that the factory used the battery for specifically in the 928. If Porsche felt that the weight was needed to smooth things out, could eliminating it be degrading? Or was it simply a matter of: we obviously have to run a battery, for weight bias it should be in the rear and "hey", why not use it dampen the transaxle! Was it a solution to a problem that never really existed or was it used to eliminate an annoying vibration?
Thanks for your patience. Still without and trying my best to be a sponge and take in information before setting out to design/build my car.
This is exactly to my question. Do you think that running a 15lb battery is going to be helpful or detrimental to the cars ride quality? I have ran a light weight battery in large displacement engined cars before and that is not my concern...good luck in the past. My question is to the dampening effect that the factory used the battery for specifically in the 928. If Porsche felt that the weight was needed to smooth things out, could eliminating it be degrading? Or was it simply a matter of: we obviously have to run a battery, for weight bias it should be in the rear and "hey", why not use it dampen the transaxle! Was it a solution to a problem that never really existed or was it used to eliminate an annoying vibration?
Thanks for your patience. Still without and trying my best to be a sponge and take in information before setting out to design/build my car.
11-16-2003, 07:39 AM
#4
Pro
I don't notice any additional vibration going from 43lb monster to 28 pound battery. Wowever not sure I would notice with Bilstiens, 270lb specific rate springs in rear and a Borla no cat. S4 wheels @40 PSI. Poly sway bar bushings front and rear.
I don't love this car because it is cushy and fast. I love this car because it IS fast.
I don't love this car because it is cushy and fast. I love this car because it IS fast.
11-16-2003, 01:36 PM
#5
Racer
Thread Starter
Thanks, Joe.
I'm not interested in a sporty "Cadillac", but as an alternative to the "Pony" cars. That is the question I wanted answered from the perspective I was hoping. Sounds good!
I'm not interested in a sporty "Cadillac", but as an alternative to the "Pony" cars. That is the question I wanted answered from the perspective I was hoping. Sounds good!