Oil Filter

Discuss all things 1970 & later Airheads right here
User avatar
Zombie Master
Posts: 8022
Joined: Sun Aug 22, 2010 12:21 am
Location: Vancouver Island BC Canada

Re: Oil Filter

Post by Zombie Master » Fri Dec 22, 2017 11:24 pm

Another advantage of quality synthetic oil is that it pumps better at low temps. No matter what brand name is on the filter, that company might just make various qualities of filters according to what a distributor might order. I don't use Fram for my truck. I've seen some really cheap versions of the same model filter in that brand. How would one know what they are getting without exhaustive research on a particular batch of a brand? I'll buy OEM. I think that's my best chance of getting good parts that fit. Is it really worth the risk to save ten bucks? :geek:
Any and all disclaimers may apply

User avatar
SteveD
Posts: 4115
Joined: Tue Aug 03, 2010 3:29 am
Location: Melbourne, Oz.

Re: Oil Filter

Post by SteveD » Sat Dec 23, 2017 6:26 pm

Is it really worth the risk to save ten bucks?
$10 every 10000kms. Nope :!:
Save the money by not spending it on synthetic oil. ;)
Cheers, Steve
Victoria, S.E.Oz.


1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/
2006 K1200R.

barryh
Posts: 483
Joined: Fri Oct 01, 2010 12:30 pm

Re: Oil Filter

Post by barryh » Sun Dec 24, 2017 6:02 am

I learnt my lesson after crushing a filter and it's never happened again. Synthetic oil for me and take it easy with the revs on a cold engine plus as already said I'm careful about making sure the filter media itself doesn't get compressed excessively and kink the pleats. There is no way regardless of pressure that the tube will get crushed unless the pleats fold flat so the straighter they are on installation the better.

I'm not fussy about OEM filters though, it's not as if BMW make them. I'll use anything that I consider to be a quality filter and you don't have to pay OEM prices to achieve that. Wix is one of my favourites although I've used others. While not well known in all markets Wix has a reputation for quality as good as almost anything else available.
barry
Cheshire
England

User avatar
Zombie Master
Posts: 8022
Joined: Sun Aug 22, 2010 12:21 am
Location: Vancouver Island BC Canada

Re: Oil Filter

Post by Zombie Master » Mon Dec 25, 2017 4:42 pm

I guess the HI flow filters are TÜV rated. Does that count for anything?
Any and all disclaimers may apply

barryh
Posts: 483
Joined: Fri Oct 01, 2010 12:30 pm

Re: Oil Filter

Post by barryh » Tue Dec 26, 2017 10:01 am

My Crushed filter was a Hiflo but I've used some of them since not least because I had a stock of half a dozen of them at the time. I looked into the company first and saw their claims about TÜV quality:

Hiflofiltro is the world's first and only TÜV approved motorcycle oil filter. Constructed using the best materials available, all Hiflofiltro oil filters meet or exceed original equipment performance levels.


http://www.hiflofiltro.com/fileadmin/fi ... t-2001.pdf

That was good enough for me. I concluded the crushed filter must have been my fault rather than the filters and continued to use the stock that I had without any further problems.
barry
Cheshire
England

User avatar
George Ryals
Posts: 486
Joined: Tue Aug 03, 2010 10:22 am
Location: Stone Mountain, GA

Re: Oil Filter

Post by George Ryals » Tue Dec 26, 2017 11:41 am

Nobody has mentioned the high pressure relief valve in the back of the filter cavity. If this valve is in good working order, filters should never collapse.
Smile it's contagious!
'74 R90S, '67 /2 Conv w/sc, '66 R50/2
'74 Harley FXE, '72 Harley FLH w/HD sc
'69 BSA 441 Victor Special, '74 R90/6 Basket case
'85 R80RT wreck for parts

Wobbly
Posts: 164
Joined: Mon Aug 07, 2017 8:48 pm

Re: Oil Filter

Post by Wobbly » Tue Dec 26, 2017 12:53 pm

My understanding is that it's just the /7 models and later.... including the oil cooler models.
After 20 years as a professional bike mechanic and 30 years as an engineer I know just enough to be dangerous !

barryh
Posts: 483
Joined: Fri Oct 01, 2010 12:30 pm

Re: Oil Filter

Post by barryh » Tue Dec 26, 2017 2:19 pm

George Ryals wrote:
Tue Dec 26, 2017 11:41 am
Nobody has mentioned the high pressure relief valve in the back of the filter cavity. If this valve is in good working order, filters should never collapse.
The bypass valve opens and protects the filter but only up to a point. Like every safety valve it will have a variable pressure drop across it depending on fluid viscosity and flow rate. For example if the valve opens a 5 psi it's perfectly possible for the pressure across the filter to be 10 PSI. If you wanted to limit the pressure on the filter to the bypass valve set point then the valve would have to be very much bigger in diameter. Anyone who has measured the engine oil pressure can attest that it rises above the system relief valve set pressure for the same reason.

My bypass valve was fine but the incident did teach me to give it a little prod at every filter change for two reasons: to make sure it opens and to check the spring isn't broken.
barry
Cheshire
England

User avatar
Zombie Master
Posts: 8022
Joined: Sun Aug 22, 2010 12:21 am
Location: Vancouver Island BC Canada

Re: Oil Filter

Post by Zombie Master » Tue Dec 26, 2017 3:40 pm

I use a wooden chop stick to press open and check the bypass valve.
Any and all disclaimers may apply

Post Reply