I have been using Wix 51515R filters on my Hemi. With the recent info about these being made in China. I do have a Moroso filter I can use but was interested in Baldwin products. Any one use Baldwin filters on their racing big block and, if so, what part number? I see where the 51515R translates to Baldwin B2 but I may be wrong.

If you can get past the China part there is nothing wrong with the current Wix 51515R. I have also used the K&N HP-3001. It is Made in Mexico. Fram HP-1s are fine now too.

Thought about trying Baldwin but lack of local availability has kept me from trying one.

Bob is the Oil Guy website likely has posts on oil filters, and what ones are good as well.

The Wix ones here I end up with typically are made in Mexico. I have not seen a China made one yet so far.

You can buy Baldwin on Amazon, they have a store. We used to use them on our construction fleet. For some reason I’ve not considered them for the old cars. Probably because Wix was all I used, it did the job, was always available at my buddies at the old Car Quest, and wasn’t made in china. I’ll give Baldwin a try when my stash runs out. I’d have zero hesitation based on previous experience.

I have been using Wix 51515R filters on my Hemi. With the recent info about these being made in China

Is this info publish anywhere? (link)?

While not a race filter I have had really good luck with the Mopar branded filters. I believe they are actually made my Purolator but I am not positive. I had a situation where I lost some rocker arm needles. The oil pump looked exactly like you would have expected from eating needles. My bearings looked excellent so the filter no doubt did its job.

according to a thread on forbbodiesonly, Wix 51515 are USA-made but 51515R 's have been outsourced to China.

I primarily use the Moroso filter. I did try the Wix Racing once without issue, but here is something to think about.

I like the extra holes for max flow. I dont understand why Wix would make the holes so small and few.

As long as the area of the holes combined is larger than the center hole I am not sure it matters.

So when I was building my W2 stroker motor I had a choice of:
1) re-using the 90 deg adapter
2) using just the regular factory retaining plate (block)
3) purchasing a new aftermarket plate

...and all along, I always paid attention to the actual filter 'input flow capacity' it had, after all it does me no good to have a huge amount of oil flow from the block to the filter, if the filter itself cannot absorb all that flow.

Anyways...I crafted myself a little spreadsheet calculation that gave me a quantitative picture, take a look at the attachment.

Bottom line: the limit, by far, was the size of the flow through the block's oil ports, so on a SB Mopar that's the output port that feeds into the filter and the input port that feeds from the filter.

BTW: I use Wix filters all around, and the field marked EXTRA in that spreadsheet reflects the additional holes I drilled in the factory plate so that the overall flow through the plate would exceed what the block openings themselves were capable of flowing.

I agree, but why would Moroso put so many large holes in their filter?

Perhaps intended for non-OEM installations where the passages have been enlarged and a non-factory filter install is used...maybe like a remote filter install???

Probably due to the oil filter maker they use told them that having more, larger, inlet holes, is way better than having to little and not enough holes for the oil to flow into their filters

More like as long as the ring of holes flow more than the filter area that they are feeding. The filter element should be the restriction, not any holes. Use a low restriction/higher micron rated element, and the flow requirement goes way up.

Filters made in PRC is a deal breaker for me. Quality control is out the window. Don't make the mistake of thinking the company putting their name on the stuff has control of that.

Agree and makes perfect sense to me.

You can always use Mopar 05037836AA, it's the Viper filter, 3/4-16, high pressure rated, and short enough to not touch the belts on BB with the lower idler pulley. I think I pay 18.00 Canadian for these at the dealer.

thanks. I'll look into that filter. I have a 51515R on the car now and 2 more on the shelf. I'm a bit leery about continuing to use them.

I have a case of each from at least 5 years ago ..

Baldwin has a factory about 35 miles from me in Yankton,sd

Has there been any documentation of a decline in quality with the 51515R? I have continued to use them since this China flap started and have cut several apart and I see no difference in quality or performance from the one's I have used.