2007 Zx-10

[quote name='SpitfireS' date='Jan 5 2009, 10:47 AM'] Guess what: the M1-104 oil filter.

ahrmike

^your zx is built differently? if all honda Vtec engines consume oil, and yours doesnt isnt it weird? do you get it into Vtec a lot? cuz that would explain it... when I first got my car it wasnt consuming any cuz I was babying it... (if youre breaking the car in its understandable). Now, I hit vtec regularly and I see the oil consumption..




spitfire, I dont think im going to do the particle count/oil analysis...ill leave that to someone else. Ill just do the chop and pics.

2007 Zx-10

"if", assuming they all do, but is this really a true statement? and yes, I rev to 8k at least once just about every time I have the car out

ahrmike

I think its a true statement.? Ive talked to friends w. V'ed engines and they all say yes, it consumes oil...my friends prelude consumes more oil than my s...

IIRC, the owners manual says 'it consumes oil' and states that you need to check the oil level @ every fill up (probably a bit extreme, but for a mnfc to say it....)

2007 Zx-10

AP1? most of your friends have AP1s? they seem to be worse...oil consumption in well maintained AP2s is generally very low, less than 1/2 quart every 3,000 miles

SpitfireS

2007 Zx-10 Posted on Jan 5 2009, 08:59 PM
Higher crank rpm = higher oil pump rpm.
Chain & sprocket direct drive.
Oil flow at 9000 rpm (pump does about 15000 rpm, not really sure about the crank sprocket and pump sprocket ratio so this is a guess) will be higher than at 5500 rpm in the F20 and the other engines.
Oil pump is a positive displacement gear pump.
More revs = more pressure and more flow.
Oil pumps relieve valve does regulate pressure. (and flow as a result = open valve draining back to sump)
Based on what I've been reading on this forum about max oil pressure I think it reaches max at 6500 rpm or so.
It depends a LOT on the oil viscosity though.
A thin 30 weight (your basic sheared down 10W-30 dino ) will give more flow at lower pressure.
All of this oil has to go through the filter.

The M1 filter medium might very well be better.
I've seen posts on Bitog by people I trust stating it is pretty good.
But I've seen no direct comparison between the Honda 15400-PCX and the M1-104 in a F20/F22.
Comparison as in :several UOA's and particle count.
What is the filter medium area of the M1-104?
How does that compare to the PCX's filter medium area?

Also, as far as I know, the 15400-PCX filter is a F20/F22 specific item.
One would get a different OEM filter for both cars mentioned in my post above.
If Honda was so concerned about making money the chaepest way would be to spec a generic filter for the S2000, now wouldn't it?
They don't.
Same thing with diff oil: they stick with the Single grade SAE 90 GL-5
But that's another windmill to fight

ahrmike

I have an AP1...it takes about a quart per 3K, yeah I wish i got the ap2. ..but the 9K rpm is addicting..

I also try to prevent the initial startup consumption by letting the engine idle for a min during cold startups...it seems to have helped a lot. i should actually try do a review on that..hmm.

1min idle startup W. mileage+# of cold startups

vs

no warmup idle..

2007 Zx-10

the housing may be a bit larger, but the point is they're still concerned with profit over quality, or they wouldn't have switched manufacturers and produced a lower grade product

as far as flow/pressure, I'd like to see actual specs

filter media area was listed on a link I previously posted, not sure if the PCX is included there, but it should be listed somewhere

2007 Zx-10

I don't think that helps at all, in fact it may make the problem worse with the automatic high rev warm up...I just drive the car easy until warmed up , but I start up the engine and immediately put it in gear

papalegate

All the talk about Honda changing suppliers is an erroneous jump to a conclusion. In fact, Toyo Roki (the original supplier of the PCX filter) is now the corporate parent of Filtech (the current supplier). In other words, Filtech is part of the "Roki Group" of companies:

http://www.roki-jp.com/english/overseas/index.html

Thus, the switch actually may be more attributable to an independent corporate merger & acquisition move than any cost-cutting or product quality decision by Honda.