Battery Help Needed Please Read
Registered User
Joined: Nov 2006
Posts: 135
From: Houston
Rep Power: 25
Originally Posted by Red Devil
Replaced my battery today with the Group 49 Die Hard. Their computer only lists Carrera 4 but under that it shows 3.6 Turbo as the engine 
. Anyway, it lists Group 48 & 49 as being acceptable sizes. They are both the same width as stock and the 49 is a little longer with the 48 being a little shorter. The battery tray has adjustments for different widths and the 49 went in there easy. The only thing I had to do was put my own nut and bolt in there to tighten the battery-retaining clamp. Apparently, only 3 of the 4 holes have built in threads for the bolt that holds the clamp down and i had to use the 4th (widest) hole. In order to get my bolt under the tray I had to remove the tray with the 4 nuts that are right there. Slip the bolt under before securing the tray back (the nut can't fall due to sheet metal under it) and re-tighten the tray bolts. Drop the battery in and then just put a nut on the top of the bolt to hold the clamp so the battery couldn't slide. Reconnect vent tube & terminals and you are good to go. It starts up so fast now and I think I might have gained 50 HP 
. Anyway, it lists Group 48 & 49 as being acceptable sizes. They are both the same width as stock and the 49 is a little longer with the 48 being a little shorter. The battery tray has adjustments for different widths and the 49 went in there easy. The only thing I had to do was put my own nut and bolt in there to tighten the battery-retaining clamp. Apparently, only 3 of the 4 holes have built in threads for the bolt that holds the clamp down and i had to use the 4th (widest) hole. In order to get my bolt under the tray I had to remove the tray with the 4 nuts that are right there. Slip the bolt under before securing the tray back (the nut can't fall due to sheet metal under it) and re-tighten the tray bolts. Drop the battery in and then just put a nut on the top of the bolt to hold the clamp so the battery couldn't slide. Reconnect vent tube & terminals and you are good to go. It starts up so fast now and I think I might have gained 50 HP Today I had the car go flat on me and like your post here, the battery that they gave me was longer than the stocker. It fit the tray great but that last home didn't have a thread.
Now I was questioning the battery choice until I read you stating it was a 49. My battery that they gave me was from a shop called NTB which sells Sears and Exide brands. I was given the Exide version.
It says on the side label next to the cranking amps that it is a type 40 but the primary label on the battery says 49-60.
I have a base 996 and I watched the dude type in my car information so it was selecting the right machine. Is this the size made for all normal machines? I saw on his screen that the GT has a different battery selection.
Registered User
Joined: Nov 2003
Posts: 203
From: Littleton, CO
Rep Power: 34
I bought one those Interstate batteries last week. I weighed both my oem Porsche battery and the Interstate. It weighed more then 10 pounds less the the Porsche battery. I don't think the Optima battery is much lighter and the Interstate is a direct replacement without the hassle of having to buy or make a tiedown plate for the Optima.
Ken
Ken
Registered User
Joined: May 2008
Posts: 294
From: Boston
Rep Power: 33
Did you need a vent kit to reconnect the vent tube? I'm going to replace my battery with an interstate MTP-93 which is a group 49 battery. I read that it is a direct fit but I am unsure about the vent tube.
Replaced my battery today with the Group 49 Die Hard. Their computer only lists Carrera 4 but under that it shows 3.6 Turbo as the engine . Anyway, it lists Group 48 & 49 as being acceptable sizes. They are both the same width as stock and the 49 is a little longer with the 48 being a little shorter. The battery tray has adjustments for different widths and the 49 went in there easy. The only thing I had to do was put my own nut and bolt in there to tighten the battery-retaining clamp. Apparently, only 3 of the 4 holes have built in threads for the bolt that holds the clamp down and i had to use the 4th (widest) hole. In order to get my bolt under the tray I had to remove the tray with the 4 nuts that are right there. Slip the bolt under before securing the tray back (the nut can't fall due to sheet metal under it) and re-tighten the tray bolts. Drop the battery in and then just put a nut on the top of the bolt to hold the clamp so the battery couldn't slide. Reconnect vent tube & terminals and you are good to go. It starts up so fast now and I think I might have gained 50 HP
. Anyway, it lists Group 48 & 49 as being acceptable sizes. They are both the same width as stock and the 49 is a little longer with the 48 being a little shorter. The battery tray has adjustments for different widths and the 49 went in there easy. The only thing I had to do was put my own nut and bolt in there to tighten the battery-retaining clamp. Apparently, only 3 of the 4 holes have built in threads for the bolt that holds the clamp down and i had to use the 4th (widest) hole. In order to get my bolt under the tray I had to remove the tray with the 4 nuts that are right there. Slip the bolt under before securing the tray back (the nut can't fall due to sheet metal under it) and re-tighten the tray bolts. Drop the battery in and then just put a nut on the top of the bolt to hold the clamp so the battery couldn't slide. Reconnect vent tube & terminals and you are good to go. It starts up so fast now and I think I might have gained 50 HP
Registered User
Joined: May 2008
Posts: 294
From: Boston
Rep Power: 33
Did you have any problems with the vent tube when you installed your battery? I'm picking up my interstate battery today.
I bought one those Interstate batteries last week. I weighed both my oem Porsche battery and the Interstate. It weighed more then 10 pounds less the the Porsche battery. I don't think the Optima battery is much lighter and the Interstate is a direct replacement without the hassle of having to buy or make a tiedown plate for the Optima.
Ken
Ken
Thread
Thread Starter
Forum
Replies
Last Post
Fadi
Automotive Parts & Accessories For Sale/Wanted
0
Aug 21, 2015 03:43 AM
