IcemanG17

I need a short fan belt for the 79 lemons project since we removed the airpump...I heard there is a part out there, from a power trimmer...but don't know where to get one?

Tampa 928s

My neighbor is going to lemons in Ohio this week 91 3000 Mitb I have been helping him getting it going. Is your an auto? His crew says the Porsche's always break at least the 944's do.

Flint

I found one at a regular auto parts store in an emergency situation. It was either a 20 or 21 inch V-belt. Green.

PorKen

I bought one at NAPA, and one at a hardware store.

13mm|1/2" x 20" for 86mm|3-3/8" fan pulley (increased cooling option)

13mm|1/2" x 21" for 106mm|4-3/16" fan pulley

linderpat

Your 79 will be just like my 78. I just did this a few months ago. According to DR, the belt is a 21" belt, by 1/2" wide. Mine's been on for a couple of thousand miles now with absolutely no problem. Bought it at a lawnmower store after first checking with NAPA and Carquest (neither had a belt that size) Remove fan. Insert belt and pull up when you re-install fan. Also, the alternator belt (or PS pump? Can't remember) has to come off the lower pulley first in order to put on the 21" belt.

Woops - just read Ken's post. Indeed, make sure you know your pulley size. The standard pulley on the car should be the smaller one.

Fabio421

Iceman, you may want to do what I did. I shimmed my viscouse fan out toward the radiator so it's pully is inline with the PS pully. I ran a belt around the viscous fan, the crank pully and tensioned it with the PS pump. It is a better solution in my opinion as it allows you to properly tension the belt and replacement is a whole lot easier as well. PM me for pics and measurements.

IcemanG17

944's do not seem to be as reliable on track as the 928 does......
944's have the same oiling issues the 928 does & have axle-clutch issues that the 928 does not...after proper testing and setup I do expect the lemons 928 to be reliable enough to finish the race.... I'm quite confident it can do it.....

mark kibort

I did this with my 84, and then just ended up pulling the fan and just going electric. Scots is electric as well. just by the largest electric fan available, tie it into the bottom of the radiator and use the stock fan relay or an aftermarket one. I can help you do this. S4 fans work well too, as you can build in some redundancy if needed. (only one goes on via temp switch automatically, and the other can be manual back up using two relays)

IcemanG17

Electric is the ideal solution....get a cheap used S4 setup and a 180F switch relay'd off the hot post...done.....just like the widow's setup....but I do have to contend with the $500 budget too...

mark kibort

Then, use the stock AC fan in front of the radiator and the $45 fan you get at pepboys for the rear of the radiator for a push , pull set up which scot uses in all temps. just raced at laguna in 85 degree heat with no heat issues. not even the first white line. (without fans, it will over heat bad)

mk

Fabio421

Brian, first let me appologize for not getting pics to you last night. I'll go out and take some now.

Regarding the A/C fan. I know from experience that you can wire it to run all the time with no detrimental effect to the fan motor. One of my cars had it wired together when I bought it due to a faulty temp switch in the radiator. I didn't know any better since it was my first 928 and it ended up running that way for almost two years before I noticed and replaced the temp switch.

PorKen

You can use a VW/951 dual rad switch to run a S4 or stock A/C + extra fan.

That said, I ran my '85 and '86 all summer with just the A/C fan, even in 90° temps. (I didn't have working A/C.) Once I fix the A/C in the '86, I have a dual 11" SPAL unit to go in, controlled via the VW rad switch.


thread

vwdmc16

im thinking we are going to have to go with a alternate radiator brian. like in the v8olvo, the large mercedes rad and some electric fans will do the trick and cheap. remember we dont have to use only porsche parts.

69gaugeman

Why? Stock rad is more than adequate. Why make extra work?

vwdmc16

because we dont have a good radiator, and unless we can get another for near free, it will get us way out of budget.