kiwi subbie Posted December 19, 2008 Share Posted December 19, 2008 Has any one upgraded there alternator on there 1400 to an higher charging unit? and what alt did you use. do you need to do much to make it work? I was thinking i mite update mine, if i could find one that would fit and work My GSR can flatten the battery quite quickley. Quote Link to comment Share on other sites More sharing options...
The Beast I Drive Posted December 19, 2008 Share Posted December 19, 2008 I did notice that those 1400 alts are rather rediculous. I would figure you could swap in an alt from say an EA81 car with some brackets from a 1600 motor, but thats all just speculation on my part. -Bill Quote Link to comment Share on other sites More sharing options...
Kostamojen Posted December 20, 2008 Share Posted December 20, 2008 I'm going to use one of the early 80's alternators on mine, but I bought a Bosch unit brand new. It might require swapping out the pulley, but other than that, its the same as any other internally-regulated alternator upgrade. Quote Link to comment Share on other sites More sharing options...
kiwi subbie Posted December 20, 2008 Author Share Posted December 20, 2008 yea i mite see how much an new one is. my 1400 can flaten the battery in 2 hours with only stero and allarm on. I dont no how long it would take with car running at nite with head lamps and heater on aswell as stero. When i did have all those running the lights did dim quite an bit so i switched the heater and stero off and froze lol Quote Link to comment Share on other sites More sharing options...
kiwi subbie Posted December 22, 2008 Author Share Posted December 22, 2008 just checked out in my manual for 1400. it says alt is an 35 amp one from 1975 they went to 50 amp. when changing over to an bigger more powerful alt do you have to do much? like is it an drop straight in job and plug in etc. or do i have to add extra fuses or etc.. also found an alt of an leone. think its one off an 1600 leone is this 50 amp? http://s71.photobucket.com/albums/i139/xtsub/My%20Subaru%201400/?action=view¤t=Picture8420.jpg also whats the highest amp alt can you get on an ea81/ea82 engined subaru? Thanks Quote Link to comment Share on other sites More sharing options...
The Beast I Drive Posted December 22, 2008 Share Posted December 22, 2008 I think the Leone (1800cc) cars had 60 amp alts, but don't quote me on that. I am running a 108 amp GM alternator on my wagon, only had to modify 1 bracket to do it. The GM parts seem to hold up a LOT better to my abuse, I kiled about 6 alts before I swapped to this one. -Bill Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted December 22, 2008 Share Posted December 22, 2008 XT6 alt fits on ea71 gives you 90A Quote Link to comment Share on other sites More sharing options...
Skip Posted December 22, 2008 Share Posted December 22, 2008 Be forewarned, the XT6 (your 6 cyl Alcyone) is not a direct swap and requires pulley modifications and mounting changes. There is a write up in the USRM for this. Plus these alternators all have internal voltage regulators. You alt has an external regulator that also runs your fuel pump. Quote Link to comment Share on other sites More sharing options...
kiwi subbie Posted December 23, 2008 Author Share Posted December 23, 2008 Ive got another alt here some where of an 1800 na omega coupe. it maybe is an 60 or 65 amp one. I just got to find it. so the 50 amp alt i got here off an 1600cc leone would have a internal voltage regulator? I wont be using my spare XT6 alt i got. only have one spare and theres no other parts available for them over this side of the world. Quote Link to comment Share on other sites More sharing options...
kiwi subbie Posted December 23, 2008 Author Share Posted December 23, 2008 Plus these alternators all have internal voltage regulators. You alt has an external regulator that also runs your fuel pump. so how do you go about making an internal voltage reg alt work on my one with external regulator work? do you just remove the external regulator? and then what do i do about the part that runs the fuel pump. is that just hooked up to the alt? Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted December 24, 2008 Share Posted December 24, 2008 found while SEARCHING http://www.ultimatesubaru.org/forum/showthread.php?t=18614&highlight=internal&page=2 Quote Link to comment Share on other sites More sharing options...
kiwi subbie Posted December 24, 2008 Author Share Posted December 24, 2008 Thanks for that Quote Link to comment Share on other sites More sharing options...
Skip Posted December 24, 2008 Share Posted December 24, 2008 I'm possibly going to go this route also. I read the entire post linked to bu subiemech and found the Hondasucks article outlining this proceedure is no longer available. I went through the new USRM (the old one is not available) saw the GM and the XT6 but not the External to Internal VR swap. Anybody have it "stashed" Quote Link to comment Share on other sites More sharing options...
coxy Posted January 5, 2009 Share Posted January 5, 2009 EA 81 alternaters are 50 amp thats what is refered to by the 50 in the label. LR means internal regulator ,LT means external regulator. You will fine they interchange with Datsun L series alternators as on 510 610 710 all zeds up to 280 and some others,all are hitachi and later ones are LR internal reg from early 80's on. Another which interchanges are the 65 amp Mazda Rotary from RX4 and most likely bigger output on later RX7 models. cheers Steve Quote Link to comment Share on other sites More sharing options...
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