low mount alt

[blander66]

I am in the process of installing a 2005 3400 into my 87 fiero, I am wondering if any of you have mounted your altenator below the stock postion? I am looking to do this so i can use the stock dog bone mount and not cut my deck lid

thanks

[neophile_17]

I low mounted my alternator. Car isn't running yet but should be in the next couple weeks. I did a little write-up about it awhile ago, but need to update it after everythings done. You can see it at http://www.rustytearracing.com/3400_...Alternator.pdf
Also, the alternator I have is from a 90 Buick Century w/ a 3.3L. HTH

~sam

[blander66]

Could you post up a picture of this mounted to the engine? I would like to get an idea of where it is mounting and how the belt routing is going to look

I low mounted my alternator. Car isn't running yet but should be in the next couple weeks. I did a little write-up about it awhile ago, but need to update it after everythings done. You can see it at http://www.rustytearracing.com/3400_...Alternator.pdf
Also, the alternator I have is from a 90 Buick Century w/ a 3.3L. HTH

~sam

[neophile_17]

I'm supposed to pick up my belt today. However, I won't get back to the car untill this weekend. I'll try to get some decent pictures but phone camera and confined space (engine is in) aren't in my favor.

~sam

[neophile_17]

So as promised, below is a grainy picture of my routing. I don't think this will work with the stock dobone becuse of where my tensioner sits and I didn't realize I could move it until later. Oh belt is a Goodyear 4050650 in case anyone is curious.

http://www.rustytearracing.com/3400_stuff/Alternator_Mount/Routing.jpg

~sam

[55trucker]

Here's a photo of a 3400 that I & my son dropped into a Fiero last year. The owner wanted the alt. low mounted as well so we snagged a mid 90's 3100 A/C bracket and after doing some mods to get it to fit the bosses the alternator assembly went right on. We had to put a spacer in behind the alt pulley to get the pulley to accurately align with the crank but other than that no issues.

[neophile_17]

This is definitely the routing I would use if I started over. My routing required creative dog-bone fabrication.

~sam

[55trucker]

Here's the dogbone that I fab'd together to get it to work with the 3400.
It's made of two different dogbone sections and the 3400 lift hook.
I cut up a 4 cyl 84 dogbone, a 2.8 dogbone & a 3400 engine lift hook.
I cut the hook into 2 pieces (upper & lower), used the dogbone flange from the 4 cyl & cut the 2.8 cross bar and reshaped the curve in it & welded the pieces together to get what you see here.
It worked out well.

[neophile_17]

So you couldn't insall the brackets as they are on the 2.8L?

[55trucker]

The heads on the 2.8 are cast iron, a completely different configuration with regards to where the threaded bosses in the heads are located and the overall contour the crossbar has to follow across the heads.