Alternator question

NIXmx · 03-30-2007, 01:19 AM

Are the alternators from other 5SFE engines the same as the one on an MR2? Mine went to **** and I wanted to know if I could snag one from a local junkyard. Thanks

Mister2.2 · 03-30-2007, 03:19 AM

I believe they are, although there are 2 or 3 different amp ratings / cases so make sure you get the right one. I would just take your old one in the yard with you if they allow it.

NIXmx · 03-30-2007, 05:55 PM

Thanks

NIXmx · 03-30-2007, 08:15 PM

Is the amperage labeled, or is it the design of the alternator?

Mister2.2 · 03-30-2007, 11:12 PM

There is a part number on the alternator which you should be able to use to find out what the correct amperage is, I suppose that would also be on the junkyard alternator to compare with as well.

TomsMR2 · 03-31-2007, 12:07 AM

the big 100 amp is mr2 specific, i believe. the little guys came on a bunch of different cars..

bean · 04-01-2007, 12:00 AM

is there a mounting or some other differences between the 3 sizes?

Mister2.2 · 04-01-2007, 01:59 AM

You can't use a larger or smaller alternator, has to be the correct size. You could probably go with the larger one if you wanted but you would need the bracket for it as well in order for it to line up right.

nightkid · 04-01-2007, 12:43 PM

best bet is to just get one at autozone or ect.
at least you know it will work and lifetime coverage

1991mark2 · 04-06-2007, 05:28 AM

I think the best is to rebuild the one you have. usually cost about $100. then you will know for sure it's the right one and it's going to last you for wile. Usually shops can rebuild them in one day. so you won't have your car for about 2 days because it's pretty hard to take it out. Well that is my opinion.

TomsMR2 · 04-06-2007, 10:04 AM

.. or you could pay a little bit more and get a lifetime warranty on a new alternator.

if you do it yourself you can save a little bit of money, but still have no warranty.

it should take you more like 2 hours, not 2 days.

dzmoss · 04-08-2007, 09:04 PM

If you have power steering, you have to stick with the 100 amp or you'll start popping your relay/solinoid up front and that can cost more than the alt.

03-30-2007, 01:19 AM	#1 (permalink)
NIXmx I eat rice(ers). Join Date: Oct 2006 Location: Las Vegas, NV Posts: 193 Thanks: 9 Thanked 3 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	Alternator question Are the alternators from other 5SFE engines the same as the one on an MR2? Mine went to **** and I wanted to know if I could snag one from a local junkyard. Thanks Last edited by NIXmx; 03-30-2007 at 01:27 AM.

03-30-2007, 03:19 AM	#2 (permalink)
Mister2.2 Cheese it! Join Date: Feb 2005 Posts: 6,220 Thanks: 106 Thanked 107 Times in 92 Posts Blog Entries: 1 My Google Map iTrader Rating: (3/100% )	I believe they are, although there are 2 or 3 different amp ratings / cases so make sure you get the right one. I would just take your old one in the yard with you if they allow it. __________________ --Josh MR2Trader.com Free Accounts to Buy and Sell your MR2 Parts! Deal of the Week: MR2Only Magazine, Get it NOW! Click Here. Ask me about Web Hosting Solutions, starting at $5.95 a month. 'I am at two with nature.' 'Students achieving Oneness will move on to Twoness.'

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

03-30-2007, 05:55 PM	#3 (permalink)
NIXmx I eat rice(ers). Join Date: Oct 2006 Location: Las Vegas, NV Posts: 193 Thanks: 9 Thanked 3 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	Thanks

03-30-2007, 08:15 PM	#4 (permalink)
NIXmx I eat rice(ers). Join Date: Oct 2006 Location: Las Vegas, NV Posts: 193 Thanks: 9 Thanked 3 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	Is the amperage labeled, or is it the design of the alternator?

03-30-2007, 11:12 PM	#5 (permalink)
Mister2.2 Cheese it! Join Date: Feb 2005 Posts: 6,220 Thanks: 106 Thanked 107 Times in 92 Posts Blog Entries: 1 My Google Map iTrader Rating: (3/100% )	There is a part number on the alternator which you should be able to use to find out what the correct amperage is, I suppose that would also be on the junkyard alternator to compare with as well.

03-31-2007, 12:07 AM	#6 (permalink)
TomsMR2 Formerly Tom Brokaw Join Date: Feb 2005 Location: Bay Area Posts: 2,138 Thanks: 8 Thanked 165 Times in 138 Posts Blog Entries: 1 iTrader Rating: (0/0% )	the big 100 amp is mr2 specific, i believe. the little guys came on a bunch of different cars..

04-01-2007, 12:00 AM	#7 (permalink)
bean 91 NA Hardtop Join Date: Oct 2006 Location: SC Posts: 467 Thanks: 15 Thanked 13 Times in 12 Posts iTrader Rating: (3/100% )	is there a mounting or some other differences between the 3 sizes?

04-01-2007, 01:59 AM	#8 (permalink)
Mister2.2 Cheese it! Join Date: Feb 2005 Posts: 6,220 Thanks: 106 Thanked 107 Times in 92 Posts Blog Entries: 1 My Google Map iTrader Rating: (3/100% )	You can't use a larger or smaller alternator, has to be the correct size. You could probably go with the larger one if you wanted but you would need the bracket for it as well in order for it to line up right.

04-01-2007, 12:43 PM	#9 (permalink)
nightkid Yah right!?! Join Date: Mar 2007 Location: Joliet, IL Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	best bet is to just get one at autozone or ect. at least you know it will work and lifetime coverage

04-06-2007, 05:28 AM	#10 (permalink)
1991mark2 No Skills Join Date: Mar 2007 Location: SoCal Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I think the best is to rebuild the one you have. usually cost about $100. then you will know for sure it's the right one and it's going to last you for wile. Usually shops can rebuild them in one day. so you won't have your car for about 2 days because it's pretty hard to take it out. Well that is my opinion.

04-06-2007, 10:04 AM	#11 (permalink)
TomsMR2 Formerly Tom Brokaw Join Date: Feb 2005 Location: Bay Area Posts: 2,138 Thanks: 8 Thanked 165 Times in 138 Posts Blog Entries: 1 iTrader Rating: (0/0% )	.. or you could pay a little bit more and get a lifetime warranty on a new alternator. if you do it yourself you can save a little bit of money, but still have no warranty. it should take you more like 2 hours, not 2 days.

04-08-2007, 09:04 PM	#12 (permalink)
dzmoss No Skills Join Date: Feb 2007 Location: Gulf Breeze, Fl Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	If you have power steering, you have to stick with the 100 amp or you'll start popping your relay/solinoid up front and that can cost more than the alt.