13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery Mod...or not?
Leading reported evidence
Set early twin battery 911
Suggestion or failed attempt
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0
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0
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1
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Read evidence and context
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Suggestion
That looks like 1/2 of a set for early twin battery 911.
Leading evidence: 'Set early twin battery 911' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Set early twin battery 911' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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1
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Suggestion
Unfortunately the rear is the place we can use more weight shedding...
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13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Put in a new Interstate battery today. Since it is not the OEM battery (same class but not the same brand) and I did it by myself does it count as a mod? It has an oval vent and my vent hose is round so have to find a way to adapt that so shouldn't that certainly move me over the wire into the "mod" category? Come on guys, I have virtually no automotive skills. How about some support!
Well, you could consider putting something like this in a mod:
It fits in the stock location (albeit into a different slot, the smallest one), and is a good 25lbs+ lighter than the large battery.
NEIN! They make a Cayman for people like you!
BRB, going outside to put lead weights and two extra batteries into the rear bumper.
The battery is the size specified for the accessory battery of an e38 BMW 740iL if anybody's interested BTW.
Went to the Interstate Battery store and got the oval vent adapter to the round hose porsche part. I'm counting that as a successul mod. Read it and weep.
Did you purchase the Interstate model MTP-H7? No adapter should have been needed. It matches factory exactly (Except for the fact that it has about twice the CCA and will last more than a year).
Went with MTP-91 per their site and the hard copy docs at the store. It fit perfectly in the tray for a pre-drilled bolt down bracket and where the old Exide batterty was. There is however a few inches of tray remaining on the left (facing the battery) presumably to accomodate a longer unit. The bracket is on the left and holds the battery down firmly so there won't be an issue with the extra tray length.
Like I said in the initial post, I have virtually no skills but it is firmly in place and the car starts. Hope I did it right.
boy I dunno it that was a good mod or not. I am sure it is not as heavy as the OEM and the springs so finely tuned you may have just upset the balance of the handling
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