

| Subject: | Re: Dodged a bullet -- blowed the oil filter right off Why, I'll tell you BTW |
| From: | Rocket J Squirrel |
| Date: | Tue, 29 Dec 2015 12:33:45 -0800 |
So the FLAPS counterman that originally said that the correct filter for a Saab 900 would be a Bosch 3300 was inaccurate? That might explain the problem. It was from that part number that I got the cross to the WIX filter which was blowed off. -- Jack "Rocket j Squirrel" Elliott 1984 Westfalia, auto trans, Bend, Ore. On 12/29/2015 09:56 AM, OlRivrRat wrote: > According to the WIX LookUp the Correct Filter for a Saab 900 would be > > a 51348XP which has 3/4-16 Threads ~ > > According to the Bosch LookUp the Correct Filter for a Saab 900 would be > > a D3421 which has 3/4-16 Threads ~ > > According to The Bosch LookUp the Correct Filter for a Vanagon 2.1L would > > Also Be a D3421 ~ > > > On 29 Dec , 2015, at 10:31 AM, Rocket J Squirrel wrote: > >> Okay, Chris tencentlife sent me a fresh copy of the oil cooler kit >> installation instructions. For the filter, it says, >> >> "The filter to fit any year Saab 900 or 9000 will fit and has the >> correct specs for the wbx." >> >> It was the counterman at the local FLAPS who determined that the Bosch >> 3300 is what I'm looking for. >> >> Right threads or no? >> >> >> On 12/28/2015 08:17 PM, Dennis Haynes wrote: >> >>> So let's get back to your failure. You have an oil pressure gauge. Do >>> you use it? >> >> I do. And I was aware that oil pressures were higher than normal with >> this summer oil in the engine. >> >>> The most important time for using one is just after start >>> up and during warm up. As you drove off did you notice unusually high >>> oil pressure? >> >> Sure I did, but no more unusual than the morning temps I've been seeing >> this winter -- with that thick summer oil in the engine. >> >>> Is your gauge capable of reading abnormally high >>> pressure or does it only go to 70psi? I choose the 150 psi gauges >>> for a reason. >> >> It's a 150 psi gauge. I confess that I wasn't watching the oil pressure >> gauge when I pulled out onto the street, I was dealing with icy roads >> and oncoming traffic, which drew my attention. So I can't say what it said. >> >> It's when I do things like this that I realize that the only reason I've >> managed to live to the age of 65 must have more to do with luck than brains. >> >> -- >> Jack "Rocket j Squirrel" Elliott >> 1984 Westfalia, auto trans, >> Bend, Ore. >> >> On 12/28/2015 08:17 PM, Dennis Haynes wrote: >>> 3/4-16 is the thread size you want. >>> >>> Sorry Dennis >>> >>> >>> -----Original Message----- From: Vanagon Mailing List >>> [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dennis Haynes Sent: >>> Monday, December 28, 2015 11:15 PM To: vanagon@GERRY.VANAGON.COM >>> Subject: Re: Dodged a bullet -- blowed the oil filter right off Why, >>> I'll tell you >>> >>> I had limited time before but I wanted to get that wrong oil filter >>> out there so all can stop wondering. How or why did I go here? This >>> is not the first time nor the first vehicle I have seen this happen >>> to. It is an error more common than one would expect. There are a >>> bunch of oil filter/engine combinations that seem to work but under >>> some conditions will fail. So I looked up the two filter numbers you >>> provided and they both have the 20mm thread. You say this was >>> recommended to you. Is that in writing? Imagine that failure causing >>> an engine failure or worse an accident, fire, or environmental >>> concern. As for oil filter sandwich adapters they usually use the >>> same thread on both ends, the goal is to fit between the engine and >>> the filter using the same filter. >>> >>> So let's get back to your failure. You have an oil pressure gauge. Do >>> you use it? The most important time for using one is just after start >>> up and during warm up. As you drove off did you notice unusually high >>> oil pressure? Is your gauge capable of reading abnormally high >>> pressure or does it only go to 70psi? I choose the 150 psi gauges >>> for a reason. Watching cold oil pressure is sometimes more important >>> than hot oil pressure, especially if a relief valve fails. Here is a >>> weird one! Oil rises and water sinks to the bottom. So if you have an >>> engine with a lot of condensation in the crankcase (it happens) in >>> really cold weather the oil pump inlet may be blocked with ice. No >>> oil pressure! The old beetle engines had the screen designed to pull >>> down out of the way for this in addition in case they were clogged >>> with dirt. I have seem more engine damage or other failures from cold >>> weather operation than you can imagine. I've seen broken pump shafts, >>> seals actually pushed out, spun bearings, etc. And not just on >>> Volkswagens! Keep in mind this is not full time work for me. After >>> the filter went lose you would have also seen the pressure gauge >>> fluctuate long before the total oil loss. The oil light did its job. >>> The later vans with the dynamic oil pressure warning system may have >>> even given an earlier warning looking for a higher oil pressure above >>> 2,000 rpm. The buzzer would also get your attention. This is why >>> manufacturers don't always give us gauges. >>> >>> Now let's look at some engineering options. Since you have an 84 you >>> don't have any original oil cooler. The only reason you need a short >>> filter is to clear the exhaust. At some point the exhaust has or will >>> need to be replaced. Using the engine pipes from the 2.1L will allow >>> the normal oil filter. The 2 engine pipes, collector, and J-pipe will >>> mate to the 1.9 catalyst and muffler. The GoWesty stainless pipes can >>> be a reasonable cost longer life option. I'm done with Dansk, this is >>> all I install now. Ultimately you can replace the rear engine bracket >>> and go 2.1L exhaust all the way. You could also do an oil filter >>> relocation. Replace the filter with an adapter to hoses and mount the >>> filter on a stand-alone mount. Use an in line thermostat for the >>> cooler. This can allow an even larger filter. >>> >>> Why think of filter size? Filters are designed to work in a certain >>> flow range. While most think a smaller filter is adequate if there is >>> not a problematic pressure drop they are missing a major point. A >>> smaller filter means the oil has to pass through at a higher >>> velocity. Filters stop some dirt on the surface but also through the >>> depth of the media. Faster flow means more of the dirt can get pushed >>> through. Look at furnace or air conditioning filters and note the >>> dirt on the filtered side. Also, the smaller filter will have less >>> capacity for accumulation. Not a super issue for our engines but >>> something to consider. >>> >>> Dennis >>> >>> >>> >>> >>> ----Original Message----- From: Vanagon Mailing List >>> [mailto:vanagon@gerry.vanagon.com] On Behalf Of Rocket J Squirrel >>> Sent: Monday, December 28, 2015 9:41 PM To: >>> vanagon@GERRY.VANAGON.COM Subject: Re: Dodged a bullet -- blowed the >>> oil filter right off Why, I'll tell you >>> >>> Okay, so can someone point me to a website that provides threading >>> and dimensional specs for our kinds of filters? I need a filter about >>> the same diameter as the stock 1.9L filter, about an inch or so >>> shorter, to accomodate the reduced space that the banjo fitting takes >>> up, and has the right threading -- whatever it is that I'm looking >>> for. >>> >>> It's been a long time since I installed the oil cooler kit. I don't >>> recall whether the fitting that goes between the engine and the oil >>> filter has its own male and female threaded bits, and whether the >>> sticky-out part that the filter mates with is the same threading as >>> what comes out of the engine. But I'm pretty sure that tencentlife >>> recommended the Bosch 3300 and crosses. >>> >>> Anyone got an email for tencentlife? >>> >>> -- Jack "Rocket j Squirrel" Elliott 1984 Westfalia, auto trans, Bend, >>> Ore. >>> >>> On 12/28/2015 06:22 PM, Dennis Haynes wrote: >>>> The reason the filter blew off the threads is because it is the >>>> wrong one. The vanagon and many VW's of that error used a 3/4" >>>> thread. This is common to many vehicles back then especially Ford >>>> and some Chrysler. The filters you are using have a 20mm thread. >>>> Yes it almost fits but it is a very loose fit and the thread pitch >>>> is wrong. 20mm threads are common on many GM and some European >>>> vehicles. Now go get a filter at least with the correct thread. >>>> >>>> Dennis >>>> >>>> >>>> -----Original Message----- From: Vanagon Mailing List >>>> [mailto:vanagon@gerry.vanagon.com] On Behalf Of Rocket J Squirrel >>>> Sent: Monday, December 28, 2015 7:01 PM To: >>>> vanagon@GERRY.VANAGON.COM Subject: Dodged a bullet -- blowed the >>>> oil filter right off >>>> >>>> Okay, so it's my fault, but I think I lucked out. >>>> >>>> As temperatures drop down the freezing, and below, I change my >>>> engine oil to 10-40, a thinner grade. But this winter I got lazy. I >>>> admit it, I got lazy. >>>> >>>> Well, one cold morning last week I started the van and trundled >>>> down the street to go downtown, and was about a 1/2 mile from home >>>> when I noticed that the idiot light for the oil pressure was lit. >>>> And the aftermarket oil pressure gauge I installed a few years ago >>>> was at zero. They don't share the same sender or anything so I knew >>>> it was serious. >>>> >>>> I pulled off the main road and got out and looked behind the van >>>> and sure enough, a trail of oil behind me leading up to a small >>>> puddle under the engine. >>>> >>>> Triple-A flatbedded the van to Gary's Ole Volks Home here in Bend, >>>> and after an hour he called me and said that the oil filter had >>>> plain blowed off. >>>> >>>> So here's what happened: at these low temperatures, I reckon that >>>> the thicker summer oil was as thick as pine sap -- maybe amber -- >>>> resulting in very high oil pressure. >>>> >>>> The oil filter was not the stock one that I use. I installed a >>>> tencentlife oil cooler kit a few years ago, and it uses a banjo >>>> fitting that goes between the filter and the engine for oil send >>>> and receive (thermostat in there, too). The stock filter is too >>>> long to fit and he recommends a Bosch 3300, which I have been >>>> using. >>>> >>>> But the last time I replaced the filter, when I switched from >>>> winter to summer oil, the auto parts store was out of stock on the >>>> Bosch, and they offered the Wix. I never heard of Wix, but the guy >>>> said it was a good brand, so hey. >>>> >>>> Well, the mechanic was consternated by the shorter filter, said it >>>> was the wrong one, and that the threads looked like pipe threads. I >>>> picked up a new Bosch on my way over and took at look at the Wix, >>>> comparing it to the Bosch, and the threads in the Wix looked pretty >>>> poor. >>>> >>>> So I think I lucked out here. That high oil pressure was gonna >>>> blow out something, I'm just glad that it was a $6 oil filter. >>>> Otherwise, $75 for the work, nothing (other than subscription to >>>> Triple-A) for the tow. It could have been a lot worse. >>>> >>>> Engine sounds fine, I hope no damage was done. >>>> >>>> And what's the lesson, kids? Don't skip maintenance. And distrust >>>> Wix filters. >>>> >>>> -- Jack "Rocket j Squirrel" Elliott 1984 Westfalia, auto trans, >>>> Bend, Ore. >>>> >
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