Seen a few pics before on the site of the oil cooler mod, but nobody really has gotten into it deep on here. Just thought I'd show that it can be done, and what is required to do it. I've only recieved a few pieces so far, so I will update the thread as the parts come in.
First off, the spin on filter. Why switch? Well, personal preference I suppose. You have quite a bit of options (like 40) when it comes to off the shelf filters at the local stores and online. You can pick and choose between filter media, filter construction, spring style, pressure of valve, filter length, etc. With a stock filter you have a max of 5 choices. The stock filter setup works perfectly fine and when you put a decent filter in it, it works no different than a spin on filter. So once again, this mod is personal preference.
Yamaha used our XS400 filter system on many bikes for many years. Same cover, same bolt, same filter, on most of those. If you do some snooping around, you can see that Yamaha offered an adapter plate to convert the internal filter to a spin on filter. This plate simply goes against the crankcase, has a union bolt that threads in, and then you just spin the filter on. This plate will work on any Yamaha that utilized that same size filter o-ring found on our bike. If you do a parts search on our o-ring, you can see about 75 models/years listed. Here is the adapter plate and bolt, OEM Yamaha-
I got this plate and bolt for $9 on ebay. Tons available out there.
Plate Part Number- 3TJ-13461-00-00
Bolt- 90401-20007-00, 90401-20145-00
If you are looking at ebay or a junk yard, you can try looking for 'Yamaha oil plate', 'FZR Oil Plate', 'XJ Oil Plate', etc etc
If it sounds too easy so far, well, there is a catch when it comes to our bikes. The area on our crankcase(and other motors that this can be used on) are not machined the same. Specifically on our motor, there is a raised center portion with another raised area that sits above it, before reaching the sealing area. This prevents the adapter from sitting flush against the crankcase. Not so good, unless you want the oil all over the garage in a matter of seconds. Here is a picture of the area in question-
So there are a few options here to get this working properly.
-Machine the motor side of the plate adapter ~3mm in the corresponding questionable area
-Machine the case where the high area is to be level with the o-ring surface
Well, I did a combination of both to get mine to work. Took all of 2 minutes with my handheld Bridgeport(rotary tool). And just like that, it fits and seals-
Now the filter I chose is not the one you would want to use if you do this mod. You would want one that is about 2.5-3 inches long, giving you more filtration area. I had to use this short filter due to my oil cooler plate, which will be covered in the next installment when the parts come in.
I'll let you cross reference filters on your own, but this list is a good starting point- http://fzronline.com/forum/viewtopic.php?f=8&t=234 The sealing area on the filter side of the plate is pretty large, giving you quite a few options. Just do your due diligence in doing some measuring and research before grabbing a filter. Thread size is M20x1.5 on the bolt.
I don't have stock pipes, so I can change the filter with my headers on, but before doing this make sure you can clear your stock pipes or aftermarket pipes.
First off, the spin on filter. Why switch? Well, personal preference I suppose. You have quite a bit of options (like 40) when it comes to off the shelf filters at the local stores and online. You can pick and choose between filter media, filter construction, spring style, pressure of valve, filter length, etc. With a stock filter you have a max of 5 choices. The stock filter setup works perfectly fine and when you put a decent filter in it, it works no different than a spin on filter. So once again, this mod is personal preference.
Yamaha used our XS400 filter system on many bikes for many years. Same cover, same bolt, same filter, on most of those. If you do some snooping around, you can see that Yamaha offered an adapter plate to convert the internal filter to a spin on filter. This plate simply goes against the crankcase, has a union bolt that threads in, and then you just spin the filter on. This plate will work on any Yamaha that utilized that same size filter o-ring found on our bike. If you do a parts search on our o-ring, you can see about 75 models/years listed. Here is the adapter plate and bolt, OEM Yamaha-


I got this plate and bolt for $9 on ebay. Tons available out there.
Plate Part Number- 3TJ-13461-00-00
Bolt- 90401-20007-00, 90401-20145-00
If you are looking at ebay or a junk yard, you can try looking for 'Yamaha oil plate', 'FZR Oil Plate', 'XJ Oil Plate', etc etc
If it sounds too easy so far, well, there is a catch when it comes to our bikes. The area on our crankcase(and other motors that this can be used on) are not machined the same. Specifically on our motor, there is a raised center portion with another raised area that sits above it, before reaching the sealing area. This prevents the adapter from sitting flush against the crankcase. Not so good, unless you want the oil all over the garage in a matter of seconds. Here is a picture of the area in question-

So there are a few options here to get this working properly.
-Machine the motor side of the plate adapter ~3mm in the corresponding questionable area
-Machine the case where the high area is to be level with the o-ring surface
Well, I did a combination of both to get mine to work. Took all of 2 minutes with my handheld Bridgeport(rotary tool). And just like that, it fits and seals-


Now the filter I chose is not the one you would want to use if you do this mod. You would want one that is about 2.5-3 inches long, giving you more filtration area. I had to use this short filter due to my oil cooler plate, which will be covered in the next installment when the parts come in.
I'll let you cross reference filters on your own, but this list is a good starting point- http://fzronline.com/forum/viewtopic.php?f=8&t=234 The sealing area on the filter side of the plate is pretty large, giving you quite a few options. Just do your due diligence in doing some measuring and research before grabbing a filter. Thread size is M20x1.5 on the bolt.
I don't have stock pipes, so I can change the filter with my headers on, but before doing this make sure you can clear your stock pipes or aftermarket pipes.
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