Chimera

I've searched, but haven't found a direct answer. Is anyone using an Optima YellowTop in their 964, and, if so, what model fits?

Thanks!

Doc

MarkD

I don't know wabout the yellow top but the group 35 red top I recently put in fits great.
The yellow tops are deep cycle... (can be discharged/recharged and stay happy) they have plenty of CCA so they will work fine. Some here have used them.

Mark

DrJupeman

As a general rule, if you use your car a lot, get red top. If you let the car sit (without trickle charger, I suppose), get the yellow top. Red top is best for cars. Yellow might be better for boats or trailers.

Chimera

Thanks Mark and Charlie. It looks like the RedTop is the way to go, plus a trickle charger for the winter weeks I can't get to bare pavement.

Doc

Steven C.

I can HIGHLY recommend the yellow top for cars not driven that much. Had a used one in my race car for 3 years, it was already 2 years old when I got it and it is still going in a friends car now 6 years old! Incredible

Marc Shaw

I have the Red Top 75/35 and it fits perfectly - plus it was 3 lbs lighter than the Interstate brick it replaced.

Marc

MarkD

and NO battery acid leakage!

Excellent battery.
BTW, I bought mine off of a supplier on eBay. Best price around, even with shipping. I couldn't find one at a reasonable price locally. None of the discount stores (WalMart, etc.) had them around here.

ttAmerica RoadsterAWD

I have an optima yellow top. Works great. I don't drive it daily, and keeps charge without a problem. The only thing I can gripe on this battery, well,ok two things I can gripe about is:

1. It's still heavy compared to some of those neat smaller ones for racing.

2. Since these batteries are adapted onto our cars, the positive terminal is too damn close to the front brake pressurizing pump-with only a thin plastic cover to separate the two. Imagine a front collision for a moment, and that big void behind it full of gasoline!

Jaime

MarkD

My battery term configuration is the opposite. The positive terminal is towards the front. Odd.

Marc Shaw

Mine is towards the front too. I put heavy rubber terminal covers (from a marine supply store) on - in the picture above, only the black negative cover is installed but I usually have a red positive cover on the other terminal too.

Marc

DarrylH

Yellow top here. Positive terminal at front of car. No fitment problems. Has been flattened many times by various current drains over the years, still going strong. Any ordinary battery would be long since killed, I'm sure. If you have no spurious electrical draws, yellow top is probably not needed. I look on it as cheap insurance against premature battery death.

cwrm4

Wanted to touch on the original question, as I think my battery has an internal short...which model Yellow Top fits the 964? Optima doesn't list a battery for the 964 on their website.

Thanks, Will

'93 C2 Cpe
'74 TR6 (for sale)
Rennlist Member

MarkD

Group 75/35 fits!
They won't list it for the car but it fits perfectly.

Tinwan

Hi,
I have used one of these great batteries for over 5 years and have just replaced it having been run down to flat and charged back up again so many times I lost count & there is only (1) model that fits the space so you can't go wrong. I also fitted a Priority Start (pro x model) that cuts the battery off before it goes completely flat, this combo has never let me down, you buy the PS in the USA and combined is perfect for cars not driven all the time.
Cheers, Mark

kimo964

I know all the Costcos sell optimas now, best price too.