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D7N7MASTER's Avatar
 
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Cool Weltmeister Oil Trap

Hi All,
Anybody have any experience with this modification?
Thanks,
Gary
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Old 09-01-2003, 07:30 AM
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Yeah, works great for AXing.

Geoff
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Old 09-01-2003, 09:15 AM
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On some engines the unit will not seal and will leak oil.

Do not over tighten to get it to seal as you can damage the center CAM support.

They work well if you have a moderate problem, but not so well if the car is going to be used at high speed on race tracks with large sweeping turns.

I could not get mine to seal on 2 different motors.

Ken
Old 09-01-2003, 01:14 PM
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So they drip alittle oil, whats new.
Cheap insurance, but DO NOT over tighen.

Paul
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Old 09-01-2003, 04:20 PM
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Thanks All, I suppose I just needed some feed back. I "attempted" to install this lil' gem - only to find that the "extended tube" supplied with the oil trap kit - was too long to allow the "oil trap" to seat against the gasket. (This is a '73-914, 2.0-4.) As I was following the directions... it said "Lightly grease O-ring in extended tube. Once started, push up with the Oil Trap itself so extended tube is at the proper depth. Not a problem, See Diagram" #1. See Diagram" #1? For what? There's not one dimension given - Yeah, I'm not Arnold -gonna be governor- but I gave it my best - this has gotta work push & twist. The Oil Trap bottoms out on the "extend tube" prior to seating against the gasket. Tried again to install the "oil trap" Same results. The diagram sucks. no way could I determine how to set the "extended tube" at the "proper depth". But if you notice that the "extended tube" has "flutes", it would seem that by design, the "extended tube" picks up oil from all four sides of the tube, thereby enabling the oil pump to have unrestricted flow of oil. Anyway... I took a few rough measurements, cut .300" of the "extended tube length " (oil pick-up end), & cut the "flutes" .300" deeper to compensate for the trim in overall length. De-burred & installed the bit*h, errr ahhhh- 'lil gem. All's well. But why??? Why shouldn't the kit fit without modification? Thanks, Gary
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Old 09-01-2003, 06:00 PM
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Mine slid in with no problems..........

Geoff
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Old 09-01-2003, 06:03 PM
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many people had to shorten the tube to have it mount properly
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Old 09-01-2003, 06:46 PM
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Thanks, That's a bit of a relief... I felt like I was doing the right thing when I trimmed the length off the "extended tube" to compensate for the distance to the oil trap seating properly against the gasket with less than the required 9ft lbs. Although I still feel a little uneasy about the oil being able to flow past the "bolt" "& "extended tube" outside/inside (respective) diameters when installed. It looks like the extended tube i.d. could be opened up a bit to promote flow. Anybody ever modify for flow???
Thanks Again, Gary
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Old 09-01-2003, 07:11 PM
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My car is driven hard on the street and autocrossed. It hasn't yet been on the track. When I originally rebuilt my 2.0, I added a beefed-up oil pump and a deep sump. It seemed to work well, and I didn't see the oil light come on once. However, it did feel and sound like the engine was low on oil during hard cornering. I then decided to try the Weltmeister oil trap because I lowered the car and the deep sump was vulnerable to damage. At my first autocross with this set up, the oil light came on after my first couple of runs. I decided not to run the rest of the day. Keep in mind that my car is somewhat modified, with shocks, springs, swaybars, and Kumho victoracers. If you are not pulling as much g-force you may not have a problem with the "tuna can". I now have an Accusump in my rear trunk. I believe this is the only truly effective setup for even a street car that is set up to handle and be driven. For those who aren't familiar with the accusump, it is essentially a cylinder with a piston that holds oil and dumps it into the engine when the oil pressure drops below a certain amount. Since installing the accusump, I've had no problems with low oil pressure.
Old 09-02-2003, 06:32 AM
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Gary,

I had heard there was a "bad batch" of these, and that now they were all the correct length...

However, I tried to install one on Saturday and found it to be too long also.

brant
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Old 09-02-2003, 06:59 AM
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Thanks! WOW... This b-board rocks! Great feedback! I'm gonna remove the oil trap & extended tube to dimensionally check clearance between the oil trap retaining "bolt" o.d. & the "extended tube" i.d. - Then I'm gonna check the clearance between the i.d. of the engines oil pickup & the o.d. of the threaded (mounting) stud. If the clearance isn't the same or greater respectively, I'm gonna hone the inside of the "extended tube" until I've achieved the require dimension, or have to stop due to reduced wall thickness of the extended tube becoming a concern. If I could re-design this 'lil gem I would form the extended tube shape into more of a (fluted) cone shape. Thereby eliminating the oil pickup concern. Any other thoughts, solutions, snide comments?
Thanks,
Gary
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Old 09-02-2003, 04:25 PM
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Remember, the OD of the extender tube is larger than the OD of the original tube. So you don't need as large a gap between the inner wall of the extender and the outside of the bolt to get the same cross-sectional area as you have with the original!

--DD
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Old 09-03-2003, 08:08 AM
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Thanks Dave,
But the o.d. of the tube is not my concern. My concern is the clearance between the "i.d." of the extended tube & the o.d. of the bolt that installs right up the center of the extended tube to attach to the engines mounting stud. If you were to fit the pieces together on a bench/coffee table, align to center & check for clearance, you just might be surprized to see that - visually the clearance appears to be marginal at best. When I was playing (o.k. "dry" assy) with the kit when I first opened the box I noticed that the clearance between the two pieces was pretty close. Unfortunately I didn't have the presence of mind to grab feeler guages or mock-up a fixture to "really" know what the clearances will be upon installation. There's a good lesson for ya!!! Slow down. Pay attention to details.
Bummer. My inspection of purchased parts will be - from now on - a little more complete than comparing the contents of the box to the packing list. Anyway, after I remove this 'lil gem & do what needs to be done, I'll post the results for all to see. Honestly, I hope I'm wrong & I'm just over thinking this mod. - But I don't think so... I just don't want to lose an engine due to a "tuna can"!!! What would I tell my wife???
G
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Old 09-03-2003, 04:16 PM
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