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Join Date: Sep 2005
Posts: 60
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Optima batteries
Anyone ever put an Optima battery in their 944? If so what size did you use? I need a new battery for my S2 cab and like the idea of a fully sealed battery.
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04-21-2007, 11:09 AM
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The red top is the best one for the 944. They're all the same size, but the others are overkill in terms of deep cycle, CCA's etc. Plus, the blue-top has some extra posts that get in the way.
They're kind of a bugger to make fit. I had to relocate the vacuum bulb, line the tray with a protective sheet of ABS plastic, fabricate a hold-down and use one of those ground quick-disconnects to relocate the negative post. Pics below.    
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud 
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04-21-2007, 12:47 PM
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Will work for parts
Join Date: Oct 2002
Location: Silicon Valley
Posts: 893
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I did a similar thing as above. I diddn't relocate the vacuum canister, but if you ever have to jump it/from it, the posts are a pain to access. On the bright side, the only time I killed it was when I left my parking lights on for 14 hours.
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'88 944 240,100 miles -race car '05 Boxster 110,000 - Daily Driver '74 911 Targa - long term project |
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04-21-2007, 05:35 PM
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What's all that zinc-based looking paint you put in the battery well? Some sort of highly basic-based paint?
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-1989 S2 -1986 Land Cruiser |
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06-13-2007, 06:22 PM
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looks really good by the way
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-1989 S2 -1986 Land Cruiser |
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06-13-2007, 06:31 PM
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That was just some rattle can paint I had laying around. I had just finished patching a rust hole there and needed to cover it with something. It was mainly a track car so I didn't care if it matched.
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud
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06-13-2007, 08:21 PM
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Join Date: Nov 2005
Location: Visalia, Ca
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I like that modified tie strap for the battery. My battery is just laying there with no tie down. In the middle picture i'm assuming that's a bolt thread sticking out of the battery mount so you can then bolt that down to the battery tie strap?
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Jaime O. Thank god I crashed or i would never have owned a porsche 83 944 daily driver (clutch and tt time) 85 325e BMW T-boned R.I.P. |
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06-13-2007, 11:10 PM
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Join Date: Jun 2005
Location: Metro Detroit Area
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After looking into the Optimas, I decided to go with the much lighter and smaller Hawker Odyssey PC680MJT.
It weighs around 14lbs, and has plenty of power to crank over our S2000 (which is 11:1 compression). If we were going to need Winter cold cranking power, we might have gone with the larger PC925....but our toy cars skip the nasty Michigan weather months. Brian
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'85.5 944 (sold and will be missed) Sport seats, LSD, sways, 7 & 8" Fuchs |
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06-14-2007, 03:41 AM
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mmm sounds good. I wonder if there is a calcium based paint. That way, the paint cold form an anti-acidic barrier.
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-1989 S2 -1986 Land Cruiser |
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06-14-2007, 06:02 AM
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Quote:
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud
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06-14-2007, 07:02 AM
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Join Date: Nov 2005
Location: Michiana
Posts: 159
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Optima fits perfectly!
Don't see why you needed to futz around with the Optima on it's side and all that...
Mine just "fell" right into place! I did shim up the rear side of the outide hold down clamp to make sure it stayed put, but that was it! Phot s/b attached... 
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1983 911SC... Concours Garage Queen 1987 Carrera M491 Cab... Movin' on out... 1992 968 Coupe Track Car... Gone 1968 911L, '73.5 911T, '75 911S SA, '77 911S Targa, and so forth, thru a '90 S2 Cab... |
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06-14-2007, 05:07 PM
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Location: Vinegrove Ky
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Max2.0, what model Optima is that?
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1987, 944S (168,000 miles)..sold 1986, 944na. My job is a hobby. My 944's are work. |
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06-14-2007, 05:18 PM
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Location: Michiana
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That would be the Model 8020-164 SC35R
But don't tell Optima that it's going into a Porsche!!! The will throw a fit and not sell it to you! Why? I have no idea... guess they don't like Porsches!
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1983 911SC... Concours Garage Queen 1987 Carrera M491 Cab... Movin' on out... 1992 968 Coupe Track Car... Gone 1968 911L, '73.5 911T, '75 911S SA, '77 911S Targa, and so forth, thru a '90 S2 Cab... |
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06-14-2007, 06:03 PM
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Location: Visalia, Ca
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i tried that and the clearence with the hood was just a little to close for comfort for me.
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Jaime O. Thank god I crashed or i would never have owned a porsche 83 944 daily driver (clutch and tt time) 85 325e BMW T-boned R.I.P. |
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06-14-2007, 06:30 PM
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Location: Michiana
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Did you pull the "Spacer" off the bottom of the Optima? I think that drops it down like 5/8ths of an inch...
Of course, you still need to insulate the Positive terminal in case you bounce around some! I used a piece of 1/8" Rubber Gasket material, cut to fit over the Terminal, and secured with a zip tie... Perfect!
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1983 911SC... Concours Garage Queen 1987 Carrera M491 Cab... Movin' on out... 1992 968 Coupe Track Car... Gone 1968 911L, '73.5 911T, '75 911S SA, '77 911S Targa, and so forth, thru a '90 S2 Cab... |
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06-14-2007, 06:42 PM
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Quote:
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud
Last edited by sayporsha; 06-14-2007 at 10:41 PM.. |
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06-14-2007, 10:38 PM
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Location: Ontario, Canada
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i had a battery that was just tall enough to touch the hood (had a rubber mat on top just to be sure) during hard cornering.... it shorted out many times, and I guess I was lucky.. I never experienced anything more than a dead battery that needed to be charged after every short out...
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Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
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06-14-2007, 11:02 PM
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Location: Vinegrove Ky
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I have some rubber covers that go on under the battery connector then come up and cover the top of the terminal.
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1987, 944S (168,000 miles)..sold 1986, 944na. My job is a hobby. My 944's are work. |
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06-15-2007, 12:43 PM
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I sold a 951 wiring harness to a guy whose harness got destroyed due to a short. It was a freak occurrence: he ran over a lit highway flare, which got lodged by the starter and burned through the positive cable, causing it to short circuit on the firewall. Current shot through everything and burned the entire harness. Granted the short didn't occur at the battery post, but it seems like the same thing could happen no matter where a short like that occurs.
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud
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06-15-2007, 04:18 PM
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Blitz
