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Section A - Cooling System, continued.....

Gano filters
Subject: Gano Date: Fri, 23 Oct 1998 08:44:21 -0400 From: STUART_BRENNAN@HP-Andover-om3.om.hp.com To: tigers@autox.team.net

I just ordered a Gano filter from a place in Houston called John's Mustang. The phone number is 713-668-5646. It was about $25. They advertise the plastic ones on their web page, but they said they're me shipping the last metal one they had. Stu

Subject: Re: Gano filters Date: Sat, 24 Oct 1998 11:30:49 -0700 From: john brawley To: Steve Laifman CC: Jim Parent , tigers@autox.team.net References: 1 , 2

Steve Laifman wrote: > > Jim Parent wrote: > > > OK, "how much scale will it accumulate before this screen > > collapses > > from > > its edge squeeze, and dumps it's contents, and itself > > intothe raditor?" > > > > The Mr. Gasket or the Gano? Show me the data. > > Jim, > > I was speaking of the Mr. Gasket design. Sorry if it wasn't > clear. I did respond: > > "Regarding your Mr. Gasket Filter question: > > I think the more appropriate question would be "how much > scale will it accumulate before this screen collapses from > its edge squeeze" > > I thought it was clear I was talking about Mr. Gasket. > > Now, this was my "question", after my engineering > examination of the actual hardware of both companies. > It stands as my considerer judgement, based upon my > education and esperience, that this is not a good design. > All I said,was that a "more appropriate question....". I > also gave my technical rationale. > -- > Steve Laifman B9472289
Steve,
I put the Mr. Gasket filter on my tiger and the exact thing you described happened. The screen filter came loose (screen was about 50% clogged up) and the screen lodged in the radiator hose. The filter works --it just needs to be checked frequently.
John
Subject: Re: Coolant filter longish reply Date: Mon, 03 May 1999 09:48:24 -0700 From: Steve Laifman To: Ray McCrary CC: tigers@autox.team.net, owner-tigers@autox.team.net References: 1

Ray McCrary wrote:
> Hello, > > Where can I obtain a good metal-bodied coolant filter to fit in the top > hose for the Tiger? I hate consider my new aluminum radiator croaking early. > > Regards, > > Ray

Ray,
I have tried two and thoroughly examined a third water filter for keeping scale from clogging our radiators. This is a problem with Tigers and old Iron Blocks, but can be solved.
First try was the Gant lexan plastic inline filter for the top hose. It has a removable double conical screen set inside the assemble, which fits the inside of your top hose. The first screen has a hole in the center, so the periphery catches the bigger flakes, and the second screen has no hole and catches the rest. Fine brass screens soldered to a brass ring that bolts to the housing.
This is a good filter, but there is a major design problem, and a minor problem. The minor problem is that the transparent housing, supposedly allowing a view of the filter to know when to service it, can not bee seen through the green antifreeze. One could partially drain the coolant and see the filter, allowing a service reminder. The MAJOR problem is that there are no "lips" on the housing to keep the hose from slipping off. Only friction is keeping it together. A safety wire is supplied to keep the two clamps together, put I was a little wary of the pressure popping the unit out. I built a simple stay between the two clamps on the opposite side of the clamp positions using a piece of stainless clamp band that was under the clamps, and folded over the clamps at the ends. Still, I would miss the security of the "lip". Although I hadn't any problem with the lexan housing, it could be source of future problems if it breaks from age, pressure, or abuse.
The second filter was still the Gant filter, with all the good features, but the housing was solid machined brass, with "lips". Works just fine, and I check it every 3-5 months. This would depend on your experience with how fast your car releases scale. Mine was power back flushed, and had few miles, but many years on the block. Can't see through it, so I just butted the hose together and you can't tell it's there, except for the two clamps.
I highly recommend thus filter, and it is available at the CAT warehouse for members, an at classic Mustang Parts stores.
The third filter is made by "Mr. Gasket", is widely advertised in parts catalogs, and is called "Billet". A few observations. It is not "Billet" in the common usage of machined from a solid block of material, such as aluminum. It is stamped sheet metal that has been chromed. It is a couple of inches in diameter, and does have barbed ends for the hose clamps. That is a plus. It looks like a large garden hose connection, with a course thread connecting the two ends. On the minus side, the outer shell does not rotate around the barb fitting, as a garden hose would, which requires the hose to be removed. No different, in that respect than the Gant, but could have been made simpler to service with a swivel collar. The big disappointment came when I took it apart. The filter screen, while of brass screen, has no outer soldered ring for stabilization. It is sealed against the mating part by being sandwiched between them with an O-ring. This O-ring edge compression friction supplies the entire retention force. As this 1 stage screen gets clogged, which is why it's there, the pressure on it keeps increasing. Eventually, unless cleaned, it will collapse and not only travel to your radiator tank, but take that accumulated scale with it. Now this is a design evaluation and I have not tested the unit to see what per cent clogging will cause release. I estimated that it would not need to be highly (80%) clogged to get to the release point. My opinion is that it could have been a winner, but the execution reeks of penny pinching. I was taken to task by a lister because I had not actually purchased a unit and conducted tests. But, I am not in that business. My opinion was based on observation and backed by too many years of rocket science. Other listers, hearing this 'flame' came forward with their own actual experience of having this unit dump into their own radiator. "'Nuff said."
My final recommendation is the brass housed Gant filter, with frequent checks. It's pretty easy to do, and the service, if sufficient particles are caught, is easy. Your regular replacement top hose is fine, as this will fit in the straight section, and not change the length if you butt the cut ends together. If you like belts and suspenders, a stainless band retaining strap wouldn't hurt anything.
Good luck.
Steve
-- Steve Laifman B9472289
Subject: Gano Filter Unplugged Date: Sat, 07 Aug 1999 22:11:00 -0700 From: Bob Palmer To: "Tiger's Den"

Listers,
One of this weekend's chores was to flush the Tigers cooling system. I removed the thermostat and back-flushed through the engine and radiator until it ran clean. Also, cleaned out the Gano filter, which was moderately clogged, but probably not quite to the point of being a problem. Glad, however, that none of that stuff went into the radiator. Following, I believe, Larry Wright's suggestion, I took the dual screens out of the brass Gano housing, wired them together and inserted the assembly into the radiator inlet, into which it fit quite nicely. Thanks Larry, for helping me jettison about half a pound of unnecessary brass. Then, filled the system with two bottles of water pump lubricant/rust inhibitor and de-ionized water. With the warmest part of our season close at hand, it should get put to the test pretty soon.
Oh, BTW, while at MM&J's I noticed lots of shiny new bottles of Castrol LMA brake fluid on the shelf, so I stocked up on a couple of bottles. Funny thing though; the stuff looks a bit darker in color than the old Castrol; more like the old Girling as I recall. HMMMMM??
Well, TTFN guys,
Bob Robert L. Palmer UCSD, Dept. of AMES 619-822-1037 (o) 760-599-9927 (h) rpalmer@ucsd.edu rpalmer@cts.com



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