Dronski47

Started having battery troubles and my battery had just finally bit the bullet. So I went and got a Optima red top today (optima 35 series) and installed it. When installing I noticed there was a lot more play room for the battery to slide around. And the battery hold down with the 13mm bolt wasnt doing much either. So my question is has anyone else experienced this? And what did you come up with to fix the problem?

Thanks Drew

scootertrash19

Optima has several different battery adapters made to fit properly with the existing hardware/hold down. Sounds like a trip back to where you purchased the battery. This link will show the different adapters
http://www.optimabatteries.com/_medi...s/adapters.pdf

R&L's C6

I have an 05 and the Optima Red Top I got for it bolted down tight as can be.

keyplyr

Fits snug without any adapter, no wiggle room.

cclive

The car shouldn't be driven until the battery is solidly clamped down. There should be no movement whatsoever.

Dronski47

Well my battery did come with the height adjustment pieces. But not the wing pieces like it shows for the 35 series battery. But I appreciate your info on the subject thank you. I will be making a trip back to autozone tomorrow to hopefully find the pieces I need. Thanks Drew

R&L's C6

I don't know if this helps but I tried to take some pics of how mine is clamped down.

Attachment 47681580

Attachment 47681581

Dronski47

Yeah I have probably an inch to a inch and a half gap on both sides. Something is not right.
I agree totally. Thats why im so concerned.

Dronski47

I noticed your battery had both the upper and side post. Is your battery the 75/35 battery? The one I purchased just has the post on top. And when tightening the bolt at first it will clamp the battery tight and then will it will just pop off.

R&L's C6

What year is yours? This is for an 05.

Attachment 47681588

Dronski47

Mine is an 07. But I would think they would be the same.

Dronski47

Also I noticed that your post are on different sides than mine. My positive is closer to the block. Weird.

R&L's C6

I know there was a change at one point but not sure what year it was. If you notice the positive post is on the passenger side of the car. At some point I know the positive post changed to the drivers side of the car.

R&L's C6

Here is some helpful info.

Click on battery tab.

http://www.bugmanweb.com/c6/c6index.html

Dronski47

The change must have been 06 I just looked on optimabatteries.com. I would have never payed attention to that. Im just gonna try the different pieces that came with it tomorrow and see if I cant get those to work. If not a trip to autozone to figure something out. Thank you again for all the pics and your help.

keyplyr

Well I have the Optima Red group 25, part #9025-160. I got it at Autozone. The clerk looked up the part number in the Optima book, then cross checked it with the Autozone computer.

I stood very attentive as I watched the 40 something blonde bend over the engine bay and install it. I though to myself... now that'll be a snug fit.

Dronski47

Blahahahaha I love it!! I would have done the same thing.

CO Lightfoot

Nope. It's more complicated than you'd expect: http://forums.corvetteforum.com/c6-t...-c6-coupe.html

Bottom Line: The Group 35 Optima is 12 mm shorter and 50 mm taller than the OEM Group 90 in your 2007.

But, according to the above thread and Bugman's website, some folks have installed the Group 35 battery. I believe you use the stock bolt, but need a new clamp from Optima... I don't know for sure because I've never done it nor seen any install details specific for a 2007 -- maybe someone who's installed a Group 35 in a 2007 will chime in.


In 2005 the positive terminal is on the left... but it's on the right in all other years.

So, it's possible to install the wrong battery backwards and fry your electronics.

A cautionary tale: http://forums.corvetteforum.com/c6-t...-to-start.html

SpryGeezer

Solution for an '07 coupe:
ACDelco, 6-year, Group 90.

keyplyr