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Some times I take off in second as I find it quicker to get out in front of traffic. :D

Have a read of the thread in Forced Induction.

http://www.skylinesaustralia.com/forums/sh...ead.php?t=55503

I've been muttering to myself a little but I've came to understand the issue I've had on the stock ecu.

Exhaust Reversion.. :)

I'm running N/A cams and a stock turbo (rb20t). The N/A cams have a decent overlap that with the high manifold back pressure causes exhaust reversion when coming on to boost (where exhaust reversion is noticed the most).

Only way out is a set of adj. cam gears, different cam and or a larger turbo.

The 3ltr is the way to go though. Make sure you select the right pistons to keep that factory .045-.050" squish otherwise you will drop in economy instead of picking some up. The rod angle of the 3ltr with the right squish "should" provide a more efficient engine.

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I used a ryco when cycling my oil.. Hopefully it stopped all the stuff.

I was at UAS the other day so I picked up a JIC oil filter (j-brand) so we'll see how that goes - good idea about cutting it open I never thought of that (duhh).

Will let ya guys know what it looks like (although I must admit my oil is a better colour than when the ryco was on it).

For those who are interested in buying Amsoil oil filters, I spoke with Bruce and for Melbourne area people you can go to;

Lubrication Management Systems

127B Lonsdale St

Dandenong

(ask for Bill Reid, top bloke)

Now, as for me, Geelong has an Amsoil distributor;

Zoom Master

31 Barwon Tce

Geelong

(ask for Kevin)

There are 2 main oil filters for the RB25DET, SDF15 & SDF34. The SDF34 is the recommended one, but the SDF15 will fit and is almost an inch larger, has the exact same filtration properties (10-15 microns), 7-9psi pressure dif valve, retention valve, etc.

I'm going to head down next week to Zoom Master and just make sure the SDF15 fits.

PS. For those maybe wanting to do a group buy, Bill said he'd do a good price, I just can't be farked!

:P ... Kyran

  • 1 month later...

I just pulled apart a cooper. I went to autobarn to get some of the $3 specials a while ago and the guy said be very careful with them as a friend stuffed his motor when some paper came loose. I have used them in the family cars for the past 3-5 years no worries. He reckoned change them every 5k saying the rycos are better.

I read an article on the net praising the coopers but wanted to see for myself.

This one here has been in the gfs 91 model corolla for 10,000kms with oil change at 5,000 kms. (Engine has 220k kms on it). Oil filter shown is Z386 - for skyline it is Z145a, but I assume all coopers are of a similar standard.

Things to note. There was plenty of oil still in the filter which means the anti drain back valve was still working fine. You can usually tell this by the weight (comparing to new filter)

The can and spring (spring is to keep pressure on the Anti drain back valve

img02190ql.jpg

The parts - from left, paper filter, case, spring, Anti drain back valve

img02255bx.jpg

By pass valve at bottom, cannot see too well. You can se the little holes to allow filtered oil to flow through to the centre section.

img02285ag.jpg

Paper filter

img02299ai.jpg

I have new Nissan and cooper oil filters at home. On visual inspection the holes shown in the 3rd pic are larger on the coopers than the nissans, probably not a great thing as if the paper did give way then more chance of a larger piece making its way into engine. I have 2 coopers for a corolla at home and it seems the newer coopers have larger holes whereas older ones had more smaller holes. Don't know why they changed, probably not a big deal at all. After 10000kms the paper was still pretty firm and didn't appear as if it would give way. It didn't tear really easily.

I'm going to stick with the coopers. Never had a dodgy seal either whereas I've heard people with Rycos having probs.

  • 4 weeks later...

Now that I'm due for another change of oil filter (oil leaked out + new sump + new oil) other than having to trek to UAS for a JIC filter (which seemed to keep my oil a nice consistency/colour) are there any other brands to try?

Ryco I'm not impressed with (have heard too many bad things). Paper filters I'd rather shy away from if possible.

Does anyone else know of any good brands or recommend anything? What do all the track hounds use?

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