size diff. between HAMP filter and RYCO Filter.

OEM honda one is smaller

if HAMP is OEM honda filter, like i see people saying, why are other OEM's blue, and differently sized?

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Originally Posted by tinkerbell

my *problem* was that once i installed the 19 row oil cooler, the oil cooler lines, the oil filter reolocator, my peak oil pressure dropped to 70-75PSI above 3000rpm... wheras it sat on 80-82PSI prior to the installation.

by fitting the newer smalll type of oil filter, i improved it back upto around 79-80PSI peak oil pressure.

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filter with less "total filtrate area" would result in less head loss (aka pressure loss, cause some pressure is used to push the oil tru the filter), assuming the smaller filter has less filtrate area. well, that is my understanding from the fluid mechanics class þ..

Actually from my own experience about asking about filters in the past...

quite a few parts places still stock the older "fat" filter types....which they offer for the older "normal" less sporty models and the thinner ones for the more performance orientated models...

I've generally only used the thinner type (you can also get aftermarket oil filters (non honda) jap made, that are the same size which can be used up to 10,000kms (thin type)

oh and the thinner one usually costs more lol

Sorry, had to dig this thread up because I wanted more info. Tinkerbell, is your oil pressure sender located before or after the oil filter?

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Originally Posted by gambate

filter with less "total filtrate area" would result in less head loss (aka pressure loss, cause some pressure is used to push the oil tru the filter), assuming the smaller filter has less filtrate area. well, that is my understanding from the fluid mechanics class þ..

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BTW, hope you passed your fluid mechanics class. :p Larger surface area means less pressure drop. Think of 10 people trying to get through a single door at the same time in a rush. Then compare that with 10 people and double doors.

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Originally Posted by aaronng

Sorry, had to dig this thread up because I wanted more info. Tinkerbell, is your oil pressure sender located before or after the oil filter?

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located at the remote relocation plate, so after i guess?

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Originally Posted by tinkerbell

located at the remote relocation plate, so after i guess?

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Because a smaller filter with less surface area should give a higher pressure reading before the filter and a lower pressure reading after the filter, assuming that the flowrate the same and that it is maxing out the smaller filter. Unless, the bypass valve was opening earlier in the smaller filter because of the higher upstream pressure. I'm asking this because I just bought a batch of the HAMP ones, only to find that they were smaller filters.