Rear fan opinions please (Page 1/2)
hunter29 MAY 30, 07:48 PM
So now that I have the AC130 Alt in do I need the cooling pipe anymore , I know they were dropped for 88’s.

My thinking is remove the pipe and cap the port. I would think this would increase air flow on the coil.

Worth while. Waste of time….

What are your thoughts?
theogre MAY 30, 08:02 PM
Leave it alone.

GM deleted for 88 to save money for them.

Only comes on w/ heat control turn to AC or engine is hot tripping Rad Fan Switch.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

hunter29 MAY 30, 08:19 PM
Works for me, typical GM, still pissed at them for being to cheep to put a five cent zerk fitting on a ujoint.

But that’s another story…
Patrick MAY 30, 11:16 PM

quote
Originally posted by hunter29:

...typical GM, still pissed at them for being to cheep to put a five cent zerk fitting on a ujoint.



I suspect the whole industry has gone that route. Do ball joints on new cars have grease nipples anymore?

In regards to your blower question, I'd just leave the system alone.
hunter29 MAY 30, 11:27 PM
No, nothing has grease fittings anymore..
fierofool MAY 31, 08:51 AM
The alternator wasn't the only reason they were able to eliminate the fan. Not only did it blow air onto the alternator, but onto the ignition coil and ignition module. The crossover manifold pipe was relocated to be further away from the coil and distributor, reducing the amount of heat they were exposed to. With the 85-87 crossover pipe still in place, the heat exposure is still there.

Edited: As an afterthought, since the newer alternator doesn't really require the cooling, that tube might be removed and blocked off, but leave the other. That would force extra cooling out of it, directed at the ignition coil and module.

[This message has been edited by fierofool (edited 05-31-2022).]

theogre MAY 31, 08:52 PM
CS130 "doesn't need" extra cool air but won't hurt it having that when AC is On or engine Hot.

relocate Xover pipe helps some but not as many think.
Worse if Heat Shields for Ignition and other parts are missing or deleted because they block IR from exhaust lighting up the coil etc. making way more heat cooking them.

Engine Bay Air can get warm to hot depending on flow at any giving time (1) but IR from exhaust will heat regardless of air temp.
That's on top of Electric parts generate their own heat that they must dump to air.

Anyone that deal w/ IR heating in Winter can tell you they work very well if shines on you... second you move out of range or anything block the IR, you're very cold or freezing very fast. Very Thin Metal Heat Shields in Cars block IR not Convention heating.


(1) see http://www.fiero.nl/forum/Forum2/HTML/141784.html Fiero Engine bay vs Heat.
hunter29 MAY 31, 09:16 PM
Good thread you linked, interesting idea about removing the second grill under the main, that sure would open up a bunch of square inches.
theogre MAY 31, 09:36 PM
You mean engine vents?
Don't remove the louver sheet for later years. Keeps a lot of crap out, blocks UV that "eats" plastic parts, and prevent battery theft because most won't see it and don't know is there.

I have old and new types for Fiero "Nochies" and old w/ hex screen bottom lets more crap and UV thru. In Winter lets more snow etc in too.
hunter29 JUN 03, 09:59 PM
I looked at mine today, they must be the Louver type you speak of, there wide open, why would anyone want to remove them..