[Supras] MR2 100amp Alternator in 92T --- NOT a drop-in

[B A]

Steve,

Genius!  You are 100% correct about making that line shorter.   Check this
pic out with the alternator completely removed:

http://www.hurstwood.com/alt/IMG_2171a.JPG    The hose is outlined in red.

See how far that hose extends out to the right?  It's that rightmost area
where I point to it with the blue arrow --- that's the part that covers up
the damn alternator receptacle in the back.  PLENTY of room to shorten that
hose and bring it in closer to the engine.  Great advice, truly.


However... now we have one final problem, which somehow I didn't notice
yesterday.  Examine these two pics:

http://www.hurstwood.com/alt/IMG_2175a.JPG  ---  stock 80A alternator
http://www.hurstwood.com/alt/IMG_2176a.JPG  ---  MR2 Turbo 100A alternator

Note the # of ribs --- there are 5 indented grooves in the stock 80A alt,
but only 4 indented grooves in the MR2 alt    :-(    WTF?   Nothing I'd read
in searching supraforums indicated anything about incompatible
ribbing/groove counts --- only pulley diameter and plug/receptacle
locations.

I'm not sure there's a way around this.  I didn't even realise it yesterday
when i had the belt on the MR2 alt when it was installed --- but I guess the
belt was just sitting on top of the grooves, not fitting down into them.
But the belt sure did feel tight and solid when i tightened it.  Is this a
dealbreaker?  The MR2 part# was 14901, and my stocker Toyo part# was
27060-42030.

Ideas greatly welcomed....   it's temperate (70F or so) and dry right now in
Austin so riding the motorcycle everywhere isn't a huge issue, but it won't
be that way for long.....

Brian




On 20/12/2007, Steve Michael <azsuprasm at qwest.net> wrote:
>
> Brian...Steve in AZ here.  I still got a good Bosch 80A drop-in if anyone
> wants it.
>
> I hope you can get that Alt to work...THANKS for the pics! AFA that oil
> breather hose from the Cam cover to the pan, why run the hose around the
> Alt
> when you can run a hose with a sharper 90* bend at the top JUST behind the
> pivot bolt??!!
>
> I cut this hose back years ago, and the instal is WAY clean. You will have
> to fit the bolt through the front end of the bracket and put the nut on
> the
> rear...which will rest against this hose. Yes, the bolt is too long so CUT
> IT DOWN so it's flush against the back of the nut when tightened. Easy!
>
> Steve in N.Scottsdale...90T for Me.
> 305 rwhp & 350 rwtq SILV'07 on STOCK CT, 91 pump gas.
> 60trim goin' in soon!!
>
> Subject: Re: [Supras] MR2 100amp Alternator in 92T --- NOT a drop-in
> replacement??.....
> To: "Dan Gyoba" <dgyoba at abstractconsulting.com>
> Cc: supras at supras.com
> Message-ID:
> <1cd047470712201530r27e4c93fh426fe1d4408dfc4a at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Yeah, alternators seem to either be lemons and go bad quickly, or people
> can
> go 10-15 years without changing one.  I know the one that died in my 92T
> was
> the original stock alt, so it at least gave good long service.
>
> As per my supraforums reply from a few minutes ago, I am going to replace
> that PVC line (apparently it's not even an oil line, just air) with new,
> more flexible 3/4" PVC or braided stainless steel.  And in a slightly
> longer
> length too, so I can route it *around* the alternator (ie to the outside
> of
> it), instead of down behind the alternator where it's cramped between the
> alt and the engine behind it.  Hopefully this does the trick.
>
> Ordinarily I'd have just gotten the stocker 80A replacement, but with a
> newly arrived 250W Infinity Basslink II and Infinity BassLink 4sc
> supplemental 50x4 W amp, along with a power Gentex chromatic mirror, TRD
> boost gauge, high-end Alpine CD player, AVC-R boost controller, plus
> upgraded headlights, etc..... I didn't want to run the risk of getting
> into
> that situation where at idle the headlights go dim, etc. when your stereo
> is
> playing loud, etc.  Hopefully those extra 20 amps will help in that
> regard...
>
> Cheers,
> Brian
>
>
> On 20/12/2007, Dan Gyoba <dgyoba at abstractconsulting.com> wrote:
> >
> > On 19 Dec 2007 at 19:59, B A wrote:
> >
> > > I posted this on supraforums, but past experience tells me that
> > > different people frequent that spot and this supras mailing list, so I
> > > hope nobody is offended if I post my negative experience with supposed
> > > "drop-in replacement" 100A alternator from the 1991 MR2 Turbo --- I'm
> > > really stuck at this point, and don't see much alternative than to
> > > return this thing to AdvanceAutoParts and just accept the stock 80A
> > > unit....
> >
> > Okay, for my stereo stuff, I had a Supra alternator that was done to
> 100A,
> > however...
> >
> > That oil line isn't too hard to move temporarily.  I would simply
> > disconnect it at the cylinder
> > head, move it out of the way, and plug in the connector.  Job done.  The
> > wires don't stick out
> > that far behind the alternator, IIRC, and I'm sure that you could
> wrestle
> > the hose back in place
> > once it's connected.
>
>
>
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