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brains
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Discussion Starter · #1 ·
I dropped a V12 into a miata, and Im finally getting around to setting up the pulleys. Just curious which type of alternator would be simple and maintence free. I have always used ford alternators in the past but was thinking that maybe a GM style would be a good choice. Any suggestions?

Ben
 

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Troll Hunter
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You have to be full of it. A V12 in a Miata??? A smallblock Ford barely fits and you are saying that you "dropped" a V12 in one. Don't you mean on one?? What are you smoking?? Why don't you share it??
If you had said I stretched the front end on a Miata to install a V12,it MAY have been believable...it's not even April fools day....which sounds like your day. IF you , and I know what a Miata underhood is like, have the ability to install any V12 in a Miata, there is no one here that can advise you on anything. What a Troll.
 

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Actually a Ford 351 fits pretty well. My question is what V12 ????
 

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I was thinkin' about this a while back and it wouldn't be that difficult if, like Woodz said, you stretched the front end. Extend the frame rails and the sheet metal. Yeah, it would be some work, but it's not like it would be impossible. Actually, I think the car would be more attractive with a little more length between the windshield and the nose.
 

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Guess it depends on what ouput your looking for...Honda makes some nice tiny alternators (nippon denso I think) that are single wire 60amp. That being said it really depends on how much room you got to fit it brainsboy, sounds like you don't have much room! :p Pulley setup can be more of a problem but I know the Nippons are capable of high rpm and are extremely durable.

Might want to check out the junkyards and see whats under the hood of the imports in the yard, lots of possibilities. The one alternator I was thinking of was from a early 78 Honda Civic which was single wire and 60 amp I think, nice and small and could take rpm well.

BTW you non-believers should have a look at Brainsboys photo album, if there is one person who can make a V12 fit in a Miata...its Brainsboy! :thumbup: He's evil! :evil:
 

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Dry Heat
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brainsboy said:
I dropped a V12 into a miata,
Ben
There aren't too many V12s..at least modern ones. Which V12 did you use ?

The Jag I am familar with..not much to recomend it over a SBC with all the available go fast parts. The V12 is very heavy..makes less power and cost for parts on most are a factor or two above a SBC/SCF...

BMW..? or even more exotic..?

What engine did you drop in the Miata ?

Not to be skeptical..but from your gallery it appears you should be able to pick an alterantor setup..
 

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4 Jaw Chuck said:
BTW you non-believers should have a look at Brainsboys photo album, if there is one person who can make a V12 fit in a Miata...its Brainsboy! :thumbup: He's evil! :evil:
O.K., I looked at his photo album. I didn't see anything in there that I haven't seen done before and nothing that indicates he could drop a V12( unless it is a scale model airplane engine) into a Miata. I may be a non-believer, but it's based on 40+ years of background installing all sorts of weird engines into the wrong cars. V8 Corvairs and VWs,Big Block Vegas (I'm a Ford guy, but it was fun). Then he asks about an alternator??? Just because someone has pics in his/her gallery does not mean they did it. I only put pics in my gallery of my work, yet I have tons of pics that are not mine I could place there if I wanted to distort my background. Now, if he built a custom frame and pushed the firewall back into the interior, maybe, but that is a long way from "dropped". I think he's full of it....Prove me wrong, I'd love to see it.Anyone that can afford a V12 of any kind could afford to get the complete front drive assembly and alternator with the engine. If he didn't need to ask for suggestions on how to install the engine why would he need help with the piddly stuff. Very unbelievable.
 

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brains
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Discussion Starter · #11 · (Edited)
Hey woodz, 40 years experience, should of taught you to be a believer......

Thanks "4 chuck" for the only real answer here. Unbelievers should be punished:)

http://i174.photobucket.com/albums/w92/brainsboy/DSC01614.jpg

http://i174.photobucket.com/albums/w92/brainsboy/DSC01494.jpg

http://i174.photobucket.com/albums/w92/brainsboy/DSC01737.jpg

http://i174.photobucket.com/albums/w92/brainsboy/DSC01736.jpg

Pics not good enough for all you who dont believe? how about a video?

http://www.youtube.com/watch?v=cXll5-8baE4
 

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brainsboy said:
Hey woodz, 40 years experience, should of taught you to be a believer......

]
That , although is a V12 in a Miata, not a drop in as I understand one. That embodies what I said about cutting the firewall,etc. When it is expressed as a "drop-in" by most of the people I deal with, it may include many mods but usually hacking back the firewall is out of the definition. It is still odd that after that much work you would want advice on an alternator though.
I would note that in my earlier post, that NONE of the swaps I mentioned were referred to as "drop-ins". I also put a 1940 Desoto body on a 1987 T-bird chassis...that wasn't a drop-on either.I do call it a "graft". It was a bunch of engineering and modifying of many items. When it was completed, I didn't come here and ask what door handles I should use.
So I give you credit for your work up to this point, but to many that are looking at undertaking something unusual, the term "dropped in" is misleading to the uninformed.
What rear have you installed? The stock one won't hold up to a 5.0 Ford very long, so I imagine you have some other one chosen. Is it IRS or are you going solid? I look forward to seeing it operational. Interestingly that Jag and Mazda are Ford owned too. I have considered a Jag V-12 in one of my Boss 302s, but doubt I could afford what looks like 6 Webers :( . I was going to badge it with Ford emblems just to confuse people. Good luck on completing it.
 

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brains
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Discussion Starter · #17 ·
woodz428 said:
It is still odd that after that much work you would want advice on an alternator though.
I'm not a "mechanic" as a profession and I certainly don't have 40 years experience. I just enjoy building odd conversion cars as a hobby, most I have learned along the way. Excluding a few exotics my prior experience has mostly been with Fords, I'm simply looking for an alternator thats going to be problematic free, and more updated then a 1970's external regulated alternator. I havent worked on any vehicals never then 1990's so I was hoping that someone at this site could give some suggestions.

Ben
 

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Troll Hunter
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brainsboy said:
I'm simply looking for an alternator thats going to be problematic free, and more updated then a 1970's external regulated alternator. I havent worked on any vehicals never then 1990's so I was hoping that someone at this site could give some suggestions.

Ben
With that type of conversion, I would suggest (my background compels me to) a Motorcycle alternator that is either mounted on the front snout or one that is separately mounted. Newer bikes have an enormous output to run fuel injection and all the accessories that are standard now and are quite compact. The snout ones are usually permanent magnet and can spin much higher than the Jag will likely rev.
 

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brainsboy said:
I'm not a "mechanic" as a profession and I certainly don't have 40 years experience. I just enjoy building odd conversion cars as a hobby, most I have learned along the way. Excluding a few exotics my prior experience has mostly been with Fords, I'm simply looking for an alternator thats going to be problematic free, and more updated then a 1970's external regulated alternator. I havent worked on any vehicals never then 1990's so I was hoping that someone at this site could give some suggestions.

Ben
I'm not an expert here, but I see you've got a water pump on it. Can you findor modify one of the combination waterpump/alternator units for it?

Also: Wow. Nice build- love the pix! :thumbup:

K
 
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