jeffy

iTrader: (1)

For my 85 GS ..Ok, easy one first ;

1. How do I disable the "redline" buzzer ?
and

2. At Autocrosses...Under hard acceleration (1st & 2nd gear) I get belt squeel,
new belts help a bit (but not a cure), w/propper tension (I'm pretty sure , as are others), and the fan spins ok by hand so the fan clutch should be good. -
Maybe remove the stock fan/clutch and put in a variable pitch fan???

Thanks in advance
jeff

Rx-7Doctor

iTrader: (13)

Jeff,
I don't know if this is the simplest way but to disable the buzzer you can remove the cluster and unplug it from the backside.

If you are running a single belt and not using a quality belt then you are going to have squealing problems. Alot of members use the fractional HP belt like a 3L320(don't remember if that is the correct number) but I run a single belt and never have had a squealing problem. Just get a quality belt from Napa.

Rotorhead34

On the back of the instrument cluster is the buzzer. Get in you fsm and it will give you the details. On the belt squeel, are you running the factory air pump. If not, then you need a dual alt pulley or remove the fan clutch and fan and run an electric fan. the belt doesn't make enough contact with the pulley on the water pump. Consiquently, the fan puts force on the pulley that can't be compensated for with one belt that simply sweeps the pulley. Electric fan will do you fine. Mine is set up that way and has been for a while and not a squeel do I hear and I only use the one belt. But check on ebay or the for sale section here for a dual alt pulley. Two belts on the water pump will keep it from slipping.

jeffy

iTrader: (1)

Thanks guys!
Can't get the cluster out - so I'll go at it from the underside (and maybe find my dead horn relay while I'm there).

Btw- I do run one (napa) belt (removed ac bits years ago) so I'll check into the two belts/variable fan (because I have one that may fit) before going to an elect. fan. - good to know there's options!

Rx-7Doctor

iTrader: (13)

You are correct by stating that if you use 2 belts you can eliminate the slipping.

As far as the rest.
You do not have to use 2 belts. Everything depends on the quality and age of the belt. I use a single belt when I remove the air pump and have done this on every 7 for over 20 years and not one has slipped.
You also do not have to remove the fan clutch to accomplish this either.
It is true that if you run an electric fan that you will reduce the amount of drag or force that attacks the belt.

Rotorhead34

You were posting the same time I was when this went up. IMO, were both correct and its a matter of preference from there. My son runs the fan clutch with one belt, my friend runs two belts with fan clutch, and I run an electric fan with one belt. They all work fine. Either will be suffiencient, however, the key is to have a good quality belt. A cheap belt will talk to ya.

elwood

iTrader: (1)

Have you tried a search on the buzzer? I saw a nice post years ago that outlined how to change the RPM trigger point. IMO, the buzzer is kind of nice -- even better than a shift light.

jeffy

iTrader: (1)

Added part of this question - Is there a performance advantage to:
Running a electric fan
vs
One (or two) belts and the stock fan
vs
A variable pitch fan

Continued thanks

Rotorhead34

Yes, although I don't know if you will notice it that much. But yes, removing the fan clutch does reduce drag on the engine.

sevens4me

iTrader: (1)

('84 SE)Under hard acceleration in 1st and 2nd I get bad "belt squeal" until my fan clutch disengages (I think). Actually I think my fan clutch squeals until it disengages, and it doesn't seem to disengage until you back off the throttle and then get back on it. Very annoying! I have a new fan clutch purchased from autozone (half the cost of OEM) this is the only thing non OEM I've purchased for this car. Anybody else noticed this with their fan clutch? Should I have bought OEM? How can you rule out the fan clutch squealing, not the belts?

Rx-7Doctor

iTrader: (13)

On a 12a engine that does not have an aftermarket lightened flywheel you will notice a difference in acceleration.

When I swapped to an electric fan on My Se I gained a little over 1 MPG on all around driving.
The variable pitch fan you are speaking about is not even available for our engines. That style is nosiy and used more fuel also.

If you live in an area that the temps are very hot and you do alot of stop and go driving then it may not be the ideal set up. (Electric fan)

mar3

iTrader: (8)

When I went to my Derale 17" electric fan, the change in engine speed was noticeable. Engine speed as in you mash the pedal and the engine runs to redline. It blipped a lot crisper. Butt dyno "said" it felt quicker, too, but this car would have to go back on the dyno to see if anything changed...this is Furious, not Tweety, the daily driver...Car Craft ran a back-to-back dyno session exploring the HP difference between the stock clutch-style fan, a fixed fan, a fixed fan with the blades that flatten out at speed and then an electric fan on a fox-body Mustang with 400+ HP.

The electric fan won, hands down.

jeffy

iTrader: (1)

Well , I check w/ the local NAPA dealer and called flex- a- fan and the only problem is that they find no adapter to use. I'll try perma-cool on Monday - otherwise I'll join the electric fan club.

Kentetsu

Go straight for the Efan Jeff. You won't regret it. Find a 1st gen MR2 set on Ebay or at the local junkyard, they take less than five minutes to mount on the stock radiator. Not only is this a slight performance upgrade, but also cleans up the engine by nicely. And with the adjustable controller, you are in control of what temp the fans come on at...

In the attached pic;

#1 shows a hook on the fan assembly that hangs the unit on the lip that is on the stock radiator.

#2 shows where you drill a hole on each side, then bolt the assembly to the radiator using stock bolts and the threaded hole on the radiator. Very simple...