Trotty
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Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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Erm, actually, no I haven't 
Running a single JL 500/1 at the moment, and 2 JL 12" W3V2-D2's
I've got a Directed 1.2 farad power cap but even with that, I'm still getting dimming lights on big drops. Is this down to needing a bigger cap, or a meatier battery in the first place? If so, recommendations.. 
Optima Red Top?
That Exide jobby?
Also, if I do change the battery, is it worth changing the alternator too?
Ta in advance folks 
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m-dot
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Registered: 17th Aug 03
Location: Warrington
User status: Offline
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I get dimming lights aswell
Read your emails you cunt 
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TOMAS
Member
Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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Bigger altenator first (if possible) and then upgrade to a bigger battery OR split charge with another battery (sealed jelly battery) in the boot 
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
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m-dot - I read it last night!  Just forgot to reply to your U2U...
TOMAS - ah ok, so you'd recommend a better altenator before changing the std battery?
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Well in most cases try and upgrade the standard battery too, get a diesel battery. My Exide one has 650CCA's and helped greatly powering the headunit, fogs ect. Was only £27.99, defo worth it.
Upgrading the alternator is indeed the first thing. It supplies much more power than a battery, much quicker.
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IntaCepta
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Registered: 25th Mar 02
Location: Mill Hill East, Greater London
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i woulld have thought u'd upgrade the battery and alternator before u start considering a cap?
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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Yes cap is always last. Without the alternator their would be NO power in the first place! Bigger batteries always seem to show as a good result as they have a higher capacity and dont flatten as quick but often wont last that long, well not as long as if they had a GOOD altenator charging them
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
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Ah righty, okey doke peeps, thanks for the help.
Time to look into getting a better alternator then.
You think one from a 1.8 or the 1.7d would be a suitable choice?
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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Dave_Gordon
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Registered: 24th Mar 02
Location: Golborne, Greater Manchester
User status: Offline
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Why dont you get one of those optima batterys for your boot should do the job nicely!!!!!!!!
easier wiring for amp aswell!!!
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Your gonna want one with around a 70a output or higher.
Dave, if you dont get a better alternator ect the second battery will never get a decent charge anyway.
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combatprojex
Member
Registered: 12th Oct 03
Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
User status: Offline
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where is the alternator how much are they and what does it do??
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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Righty, went into Vauxhall tonight and Bosch do a 120a altenator for the 1.4SRi - however...
Because they're still fairly new, they don't do exchange units yet so a brand new one will be £321 
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Dom
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Registered: 13th Sep 03
User status: Offline
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quote:
Originally posted by Trotty
Righty, went into Vauxhall tonight and Bosch do a 120a altenator for the 1.4SRi - however...
Because they're still fairly new, they don't do exchange units yet so a brand new one will be £321
WTF thats stooopid amount mate although that is through vauxhall, so no suprises there Thought about going to your local scrappy? or cant you go to bosch directly and get one?
Sorry to nick the thread, anyone know whats the max size alt i can get for a 1.2? Just want to replace it even before i start wacking amps in my car (sorry about the hijack)
[Edited on 13-11-2003 by VisibleMan]
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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I've got a 1.2 as well, just trying to fudge a bigger one on from a higher model
AFAIK one from one of the higher end diesels should be ideal, just need to know if it'll fit or not... 
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Trotty, just get a 70a one and get it uprated, will work out much cheaper.
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Trotty
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Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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Ya reckon? If so, furry muff
You know what I'm gonna ask next though...
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Phone around them lot for alternator uprating to get prices and to see if they do it.
Or did u want details of where to get a 70a one
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Trotty
Member
Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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Good work fella!
Appreciate that
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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If you have the 1.2 16V XE lump the Vecta V6 alts will fit - 100/120A but you will need to remove the air-duct pipe from the new alt. Also it MAY give you poor engine efficiency and ive heard of cases where with a big enough bass note and a massive alt they can stall the engine!!
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Dom
Member
Registered: 13th Sep 03
User status: Offline
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quote:
Originally posted by TOMAS
...and ive heard of cases where with a big enough bass note and a massive alt they can stall the engine!!
yea, but surely you would have an uprated battery and even have a split charging system going if your taking that amount of power?
The only problem i can see having a bigger alt is that you will loose power from the engine
Btw, anyone know what alt is on a 1.2 corsa B as standard? i heard it was 60A? And does anyone know the max you could fit to a B?
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Trotty
Member
Registered: 22nd Feb 01
Location: Bristol
User status: Offline
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quote:
Originally posted by TOMAS
If you have the 1.2 16V XE lump the Vecta V6 alts will fit - 100/120A but you will need to remove the air-duct pipe from the new alt. Also it MAY give you poor engine efficiency and ive heard of cases where with a big enough bass note and a massive alt they can stall the engine!!
Bloooooody 'ell! That's not good...
Looks like a fair bit of research is going to be required then...
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