I'll check it out. I'm still in testing and prove it mode right now.
I'll make a 200 mile run this weekend and see how the whole McGilla works
out.

Stan

On Wed, 20 Feb 2002 22:08:00 -0600 "Smola, Tony" <TSmola@tribune.com>
writes:
> Stan, sounds very cool.
> I would reccomend some aircraft hose to make it really nice....not
> too
> expensive either
> Here's the link.....I used this when I added a cooler to one of my
> very fast
> squarebacks.
> http://www.aeroquip.com/pages/prodinfo.html
>
> and the place that sells the socketless hose and fittings is:
> http://www.nelsondunn.com/
>
> you all will appreciate this stuff.......works great!
>
> Malibu Tony  85' Westy    1.9L   6 degrees BTDC
>              78  911SC Targa
>
>
>
> Date:    Wed, 20 Feb 2002 20:12:09 -0600
> From:    Stan Wilder <wilden1@JUNO.COM>
> Subject: Re: '80 Westfalia-- best way to drive over passes
>
> Since we're back onto oil coolers, I'll finish up on a link I
> started
> last week.
> Subject: Installing Mazda RX7 oil cooler.
> The cooler has been mounted below the Westy next to the LP fuel
> tank, it
> hangs down to just above the height of the LP tank skid plate.
> The cooler feed is from a sandwich plate between the filter and the
> filter mounting.
> After running the vehicle on several 80 mile round trips with 70-75
> degree weather I convinced that the RX7 147 degree internal
> thermostat is
> working correctly.
> The inlet line is hot enough that you can touch it only for a
> second, but
> at least that long.
> The return line is so cool as to be deceptive (makes you wonder if
> the
> oil is really that cool).
> The RX7 cooler is about five feet from the sandwich plate and I
> haven't
> noticed any drop in oil pressure at idle of 800 rpm or at crusing
> rpm of
> 3300.
> The idiot light still goes out immediately and the gauge still
> bounces up
> to 5 bar + on cold startups.
> The oil capacity has increased by almost a full quart in filling
> both the
> 1/2" lines and the 5x2x24" seven plate cooler.
> The main test of this cooler will be on a 120 mile trip in 100
> degree
> temperature that we get for a bout thirty consecutive days each
> Summer
> here in Texas. (alternate test 25 mph headwinds on a 75 degree day)
> Although I trust the RX7 cooler I'm somewhat puzzled by the
> thermostat,
> bypass and overall function.
> It appears that only three of the seven plates are active or
> possibly the
> oil has cooled in this three plate process enough that I just can't
> feel
> by touch that the additional plates are also removing heat. The
> three
> plates are quite hot near the inlet and half way down the 24" length
> then
> the get very cool just like the other four plates. There are four
> inlet
> ports in the path of the thermostat plunger and possibly I just
> haven't
> gotten enough heat developed to drop the plunger into that feed
> position.
> I've fed kerosine through the cooler (with thermostat removed)
> before I
> installed the cooler and it has tremendous flow through all paths of
> the
> cooler.
> I checked out the RX7 Hayes manual and about all the info it offered
> was
> 147 degree, boil the thermostat, a little plunger pops out
> approximately
> 1/8" if its working correctly. Otherwise its just a drop in plunger
> (fairly sophisticated) with copper main body, brass sealing surfaces
> and
> a spring to keep it seated until the heat relieves the spring
> tension and
> causes the little plunger to actuate partially or fully.
> I used the term *somewhat puzzled*, change that to totalled
> baffled.
> I just keep waiting for the oil temp gauge to reach that magic 100
> Celsius that I'm accustomed to seeing and it hasn't gotten there
> since I
> installed this cooler. (I might have to go to a water temp sender
> and
> gauge to get more accurate readings)
> The CHT seems to have dropped at times under heavy load but I can't
> relate it in anyway to the operation of the oil cooler. (it never
> got
> past about 350-370 before in hard running on 120 mile periods).
> I haven't paid much attention to it after installing the cooler but
> it
> used to take about 30 minutes to get 20 degree reduction in oil
> temp
> while running and just reducing speed/load. It will be interesting
> to see
> if that oil temp gauge drops back any faster with the cooler in
> operation.
> I went to a lot of trouble to fabricate a sheet metal cover and
> secure a
> VW fan with good air flow volume but it apperas that I probably
> won't
> need it as long as I keep moving. (fan not installed)
> For any of you with a sprit of adventure, the RX7 coolers are
> abundant on
> *-bay and sell for various prices from 20-180$ depending on the
> dope
> desperate for one. I paid $20.00 for mine at a local bone yard (you
> need
> the hoses too). The sandwich plate is available from all list
> vendors and
> the barb fittings are at your friendly Ace Hardware.
> Any for those who are fearful of new things, your oil filter mount
> has a
> bypass that will protect your engine if for some reason the cooler
> thermostat locked and the sandwich plate has a similar bypass. The
> ultimate danger is blowing a hose but that seldom if ever happens if
> you
> use high temp hose rated at 200+ psi.
> I would truly love to have an engine on a test stand with a troque
> converter load devise to test the total of all of the functions and
> at
> what pressure and temperatures they activate.
> Jake Rabey recently full throttled a Type IV engine on a test stand
> and
> managed to explode it just like he wanted. I think he has a video on
> his
> web site or at least a report.
>
> Stan Wilder
> 83 Air Cooled Westfalia
>
> ------------ Had to snip here, this thing has become a book
> ------------------------
>
>
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