Which oil filter?

[Russell James]

Originally Posted by Stephen12ZL1

Break in is from 0-1500 miles and the UPF48R has better filtering media for the inital break in. PF-64 must have a longer/larger can for track use and the oil must be changed to 15w-50 per track prep sheet. Still weird IMHO.

From what I heard, nothing to do with break in or media. Strictly a volume issue. A small filter not being able to keep up with racing conditions. Draining too fast was the concern with a small volume filter.

I've noticed new Vettes have gone to the PF-64.

Makes you wonder how many have been tracked already with the small filter. Especially with heavier oil, the larger the filter the better to keep up with the pump volume.

[Stephen12ZL1]

Originally Posted by Russell James

From what I heard, nothing to do with break in or media. Strictly a volume issue. A small filter not being able to keep up with racing conditions. Draining too fast was the concern with a small volume filter.

I've noticed new Vettes have gone to the PF-64.

Makes you wonder how many have been tracked already with the small filter. Especially with heavier oil, the larger the filter the better to keep up with the pump volume.

very good points!

[johnr265]

Originally Posted by Russell James

I called and asked... why the different filter for racing.

Heard back later, higher capacity for cornering. Smaller filter empties too fast when used in high speed cornering.

So there you have it, for road course racing you want to use a high capacity filter. Why a road racing car didn't come with a high capacity filter would be another good question. Somebody else can ask that one.

Thanks for the info. Out of curiosity, who did you call/speak with?

[Russell James]

Originally Posted by johnr265

Thanks for the info. Out of curiosity, who did you call/speak with?

Chevy's call center 800#. Took them a while to find the right source.

I haven't compared the 48 to a 64, but there must be enough of a capacity difference for them to recommend it in the track prep doc.

[bptman]

I would think The smaller filter would bypass quicker during constant high rpm driving. I believe also that bypass valve is located within the filter acording to the ls7 istallation manual. The pump has a pressure relief so it would not over pressure the filter."Normally" So maybe "just a guess" larger filter media is required when using 15w50 & high rpm to have a larger percentage of filtered oil. Twenty years ago we would remote mount the filter away from the engine and remove the oil filter bypass valve. This Would allow us to use a larger filter or two tandem filters to gain 100% oil filtration. Also kept the temp@ 10 deg cooler.

[Russell James]

Yeah, I'm not sure the description they told me for why is very accurate. But more so, bigger is better for racing.

For my race cars I've always used the biggest WIX racing filter I can use.

I know the racing filters don't filter down to the small micron. But they don't bypass or restrict as easy. With a BBC drag motor, with a huge Hastings filter (non racing) I was visibly seeing a lot of metal in the oil. Oil was bedazzled sparkly. Using a huge WIX Racing filter, clear green oil (Brad Penn green stuff). So I know the filter makes a huge diff in racing. I thought I was doing great with what I thought was a real good filter... it was too good. Either a restriction or bypassing too much. I think for racing, it's not the microns you're worried about, it's the starvation or bypassing.

The sweet spot for my drag car turned out to be 15w50 semi synthic high zinc racing oil, and a huge Wix racing filter. Wear problems are gone with that combo.

[Midnight Rat]

You all think the uph48r would be good to use in a ls3 instead of the regular 48?

[chimazo]

Originally Posted by Midnight Rat

You all think the uph48r would be good to use in a ls3 instead of the regular 48?

I don't see why it would be of any benefit, nor would it hurt anything. Supposedly the only difference is the thicker case. Even the first few years of the LS7 used the PF48 with no ill-effect.

[LimaCharlie]

Originally Posted by Midnight Rat

You all think the uph48r would be good to use in a ls3 instead of the regular 48?

I ran one a couple years ago. I didn't notice a difference. Oil pressure was same too.

[Z Beast]

Originally Posted by Russell James

I called and asked... why the different filter for racing.

Heard back later, higher capacity for cornering. Smaller filter empties too fast when used in high speed cornering.

So there you have it, for road course racing you want to use a high capacity filter. Why a road racing car didn't come with a high capacity filter would be another good question. Somebody else can ask that one.

It's not about capacity it's about flow rate having had both of these filters in my hand at the same time at the dealership last Friday my observations are this, the PF64 is just slightly smaller in size then the UPF48R but the holes in the top plate of the 64 appear to be 20-30 percent bigger and there are a couple of extra holes in it. The PF 64 will flow a substantial amount of oil over the 48. That being said when you go to the dealership and ask for a filter by VIN number they are going to give you A UPF48R that is what are cars call for regular street usage. According to the look up software at the dealership, the PF 64 is not even listed for our cars you have to ask for it.

[LSX Camaro]

If you want the best filter, this is it. Pure Power Billet Filter.

[Z Beast]

Originally Posted by LSX Camaro

If you want the best filter, this is it. Pure Power Billet Filter.

I LIKE IT !!!

[Stephen12ZL1]

Like it all you want, put a PF-64 on the Z/28 and be confident the GM rep will be happy if your motor takes a dump during the first 3/36,000.

[Z Beast]

Originally Posted by Stephen12ZL1

Like it all you want, put a PF-64 on the Z/28 and be confident the GM rep will be happy if your motor takes a dump during the first 3/36,000.

I said I liked it not I was going to use it.At 369.00 that would buy a lot of PF64 filters probably more then I'll use before I retire the car, but they they do stand behind there product this is there warranty.

Any Pure Power! Lifetime Oil Filter proven to be defective in material or workmanship during the period of service life recommended by the engine or equipment manufacturer, will be replaced with another Pure Power! Lifetime Filter at no cost. In addition, we will reimburse the original purchaser for the reasonable costs of the parts and labor required to repair your engine or equipment if damage is proven a direct result of a defect of your Pure Power! Lifetime Filter.