BOPR oil filter bases

jjohanski · November 12, 2019, 06:52:38 AM

Jim, Thank you for the information. I have PMd Brian.

jjohanski · November 13, 2019, 09:05:26 AM

To Jim Nichols: Might you know the part no. for the Jeep 13/16 to 3/4 adapter? My web searches come up empty.

mgb260 · November 13, 2019, 11:45:17 AM

James, I don't know the part# but it was on 76-86 AMC Jeep. They used the 13/16" GM style oil filter and block threads were 3/4". You would turn it around for what you want. The later one that is 3/4" both sides is all over the web. They were called oil filter connectors. I'm still looking but you may have to go to a Jeep dealer or find it in a wrecking yard.

mgb260 · November 13, 2019, 12:18:40 PM

Found it on Ebay. This is for straight six but v8 in those years had same part#. Enginequest OFA304 oil filter adapter insert.

https://www.ebay.com/itm/OFA304-Enginequest-Oil-Filter-Adapter-Insert-AMC-L6-258-4-2L/333378908288?_trkparms=aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D20190711095549%26meid%3Dc3ea074e10ba4eecab4c7f96dc795051%26pid%3D100047%26rk%3D2%26rkt%3D12%26sd%3D232676002775%26itm%3D333378908288%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100047.m2108

jjohanski · November 15, 2019, 05:56:05 AM

Thank you all for the information. On the Metric filter adapter/oil pump cover the nipple is cast or pressed into the aluminum housing which means a retap of that part no matter. So retap it or 3/4 and use the Ford right angle adapter. Or use the right angle adapter that D&D used. I talked to Mark at D&D and he said that the right angle adapter came from a Chevy S10. Not sure of that but a Camaro V6 right angle adapter looks just like the picture Graham posted. Mark seemed to be willing to make some of the swivel adapters again but would need the parts. The Metric base is not the problem, but the right angle adapter is. I am going to investigate using a Gems Rover right angle base from circa 78 if I can find one. It has a 3/4-16 nipple and points the filter forward. Question will be at to whether this clears the sway bar. From some pictures of Jim Stuarts installation it appears that this base (Jim used a late Gems from cover with a crank driven pump, but the base points the same direction) will just clear the sway bar if a short filter is used. I will post my findings as I receive them.

jjohanski · November 15, 2019, 05:01:09 PM

Good news one more oil filter base/pump cover that will fit a variety of timing covers and allow an oil filter to mount without any swivel adapter.
s-l1600 (13).jpg

The picture shows a rover 3500 front cover circa 87-88 (perhaps other years. This shows the pump cover I speak of attached to I believe is an early Fuel Injection front cover (GEMS) This same pump cover may be available on other years. I do not know the part no. but I am researching that. They are very scarce and probably somewhat expensive.
Notice that the filter is pointed forward and slanted down. I believe it will clear the sway bar and certainly will clear the steering rack. The filter stub is 3/4-16 and a Standard Unipart GFE148 or equivalent which is a short filter of about 3 inches in diameter and about 3.25 inches in length.
I will post more information when availble.

jjohanski · November 16, 2019, 02:29:17 PM

Part no for the above oil filter/oil pump cover etc4276. This is listed as no longer available at Rimmer Bros and some others. Looks like used is the only option. I can confirm that this fits and clears the steering rack and swaybar with the engine in the standard position and using the v8/rubber bumper cross member. It is a good option, without using the D&D swivel adapter or the Ford Racing right angle adapter, if you can find the part.

mgb260 · November 16, 2019, 03:52:53 PM

James, Thanks!

minorv8 · November 17, 2019, 02:45:49 AM

Here is a pic of the cover with a ruler. I had a spare cover and measured the base + filter dimensions. The oil pump cover has a part number ERC0568 cast in, you need to remove the filter to find it. Like mentioned above, the part number you need is ETC4276. With the filter ( a Rover Mini from circa 1976 to ,mid 90´s) fitted the front bottom corner of the filter is 6 cm down from the block oil pan flange and 15 cm front measured from the block front. Or 2 1/4" and 6" if you dislike metric units.

The cover in the previous post is actually a 4x4 cover, easily identified with the protection plate at the crank seal. Also different waterpump that sits higher than those on passenger cars.

Oil pump cover_1.jpg

And here is a similar cover fitted on the engine. The car is a Morris, not MG.

Oil pump cover_2.jpg

Wilitrun · July 26, 2022, 10:10:55 AM

Hi all,
I can today confirm that the Ford Swivel Adaptor is still available locally, but the OFA304 shows in the EngineQuest Catalog as having been superceded by pn OFA258 and is now listed on eBay as covering 1981-86. It doesn't list the thread pitches but has some application information. Perhaps someone more versed in these engines can confirm it's actually equivalent and can help me use the Ford adaptor on my '66 iron cover Buick 300. If so that's great news as I can solve this problem with a few mouseclicks rather than scour for used parts for months. Here's the OFA258 eBay link:

https://www.ebay.com/itm/175106019544

mgb260 · July 28, 2022, 07:40:41 PM

David, a lot more info here:

https://www.mgexp.com/forum/mg-engine-swaps-forum.40/mgb-v8-conversion-oil-filter-mounting.4039627/

Wilitrun · July 29, 2022, 06:16:05 PM

Thanks Jim, that's helpful.
How is the stock nipple held in the filter base? Is it pressed into the casting or threaded? And does the adaptor above thread in its place, or does the base need machining to fit?

mgb260 · July 29, 2022, 06:52:22 PM

The nipple is cast or pressed in. It needs to be cutoff and threaded. I think Paul used 3/4-16" both ends.

Wilitrun · July 29, 2022, 07:22:17 PM

Thanks Jim, so in that case the OFA258 adaptor won't work for me as I need it to be 3/4"-16 for the filter and would have to find a 3/4" -16 double nipple if I want to use a 3/4" tap to thread the base, is that right?

mgb260 · July 29, 2022, 07:55:29 PM

I mention a later Jeep nipple in that thread that is 3/4" on both ends.

https://www.summitracing.com/parts/mop-53007563ab

bigaldart · August 16, 2022, 02:50:20 PM

Has anyone compared the oil pump gears from a 455 with the later Rover (SD1) gears for height. I know a Rover pump cover fits a 455 so I am thinking the gears will be the same diameter. I also know the 455 has much bigger oil passages in the pump cover. A friend fitted a Rover cover to a 455 and wiped out the bearings as soon as he fired it. Should have realised when he could generate pressure just using a speed brace. Considering using the bigger gears with a spacer similar to the old pump improvement kit which used the SD1 gears in an early housing.

Any help much appreciated.

Alan

BlownMGB-V8 · August 17, 2022, 10:37:02 AM

Unfamiliar territory but I expect it has been looked at, maybe by someone on V8Buick. Might possibly be some advantage.

However, there is no need to enlarge the gears such as with longer ones and it's now seen as a bad idea. Learn the preferred oiling mods and do those instead. Start with holding the bearing tolerances to the .0008" to .0012" range. Do that and with 10w30 oil you should be seeing oil pressures in the 50-80psi range at cruise.

Jim

MGBV8 · August 17, 2022, 02:08:41 PM

My understanding is the size from shortest to longest is Buick/Olds 215 & 1967-1975 Rover V8 (.875"), 1976 Rover SD1 V8 & newer and Buick 300, 340, 350 (1.045"), then Buick 455 (stock) & 350 high volume gears.

Like Jim said, no need to go any bigger than those SD1 oil pump gears. I have the smaller Buick 215 gears & my engine has been pushed hard for 21 years.