I am thinking about putting in an Optima 34R but I found that it is 3/4 inches taller than stock and a little smaller in length. I am wondering if anyone is running a 34R and if they had to modify the battery tray, use a spacer, modify the retaining bar, etc.

I searched and found very little, most go the safe route, MTP-91, but I want the extra couple hundred amps for my stereo.

Thanks in advance for the info.

 

that interstate will do just fine....Johnny....that way you hood will shut...lol

 

Doc have to disagree with you on the Interstate battery. I got one, was the wrong one (black but had a MTP H6 sticker on it) was assured it was right by the supplier, after back and forth with corporate who said it was the wrong one but then reversed their message saying it was the right one, the local supplier said he had a few different looking ones for that HMPT - H6 number. Two days after I was supplied the white MTP H6 then told he didn't have it in stock the first time around so substituted a different one. Bla Bla Bla...... I said enough of this bull and returned the H6 white one. (we hadn't installed it yet)
I could only image trying to warranty help with them.....oh wait I did a few years ago with another Interstate for the Corvette. After 9 months it developed a "bad cell" was told it was the electrical system causing it. ??? Ended up taking it to Sears for a Die Hard where the shop guys keep saying "lady this is a new battery"
Lesson is Interstate had the chance to gain a customer and blew it yet again.
We bought a battery for the XF from Batteries Plus. It had 780 CCA and cost $80, fit perfectly. It is black but I used felt tip to darken the vent box up. It is a Rayovac.....feel like I got two 9v from the drug store and put them under the hood- ha ha

 

As oledoc2u says your hood will foul the top of the battery, lay a 3/4" thick piece of wood on your current battery and try.

 

I know the battery fits based on a few other members posts, but none of them are active anymore to ask the exact fitments, so I was hoping someone else was running one of the 34Rs.

This battery is a beast and IMO well worth the extra money. Anyone in car audio will tell you the battery makes a huge difference, and I am not trying to skimp here, those extra couple hundred amps make a HUGE difference to me....

 

You said originally that the height was 3/4" higher than the stock battery and that will not fit.
The 34R is 5/16" inches taller and that will just fit. A spacer will be required to clamp the battery securely.

 

Thanks a lot 180, now the hard part, spending $180 on a battery - ironic.