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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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Track-only 964, what lightweight battery??
Investigating what battery people recommend for a track-only 964 RSA without lights, stereo, AC, turn signals, etc.
All I need to do is sufficiently start/run the car with the common electronics: transponder, cool suit, etc. Thanks guys! Right now I'm leaning towards the Odyssey P925 series but feel i might can get by with a smaller, lighter battery.
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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09-18-2013, 11:55 AM
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Metal Guru
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Lots of good info in this link: Poor Man's Lightweight Battery
I've been running an Odyssey PC 680 for 4 years now in my stock Turbo. No complaints so I'm sure it would work ok for a race car.
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Paul B. '91 964 3.3 Turbo Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb |
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09-19-2013, 08:34 AM
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Moderator
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The link to Jack's article is good - but make sure you have enough of a battery for the later car electronics draw. Here's what I did with a PC 925
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Don Plumley M235i memories: 87 911, 96 993, 13 Cayenne |
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09-20-2013, 12:00 PM
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Registered
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The 5lb Shorai is a good choice as long as you keep it on a tender or use a battery cutoff while stored. I have used mine for 2 years and starting power is significantly better than the 15lb Odessey 680 which preceded it.
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2021 Cayman GTS 4.0L 2020 Macan (dog hauler) |
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09-20-2013, 04:37 PM
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1991 Porsche 964 Turbo
1987 Porsche Carrera 3.2 
Lil Red
Cayman
