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tips, technology, tools and techniques related to vehicle driveline components

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BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5552 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Rover 4.0 & Megasquirt
Posted by: BlownMGB-V8
Date: June 16, 2018 10:15AM

I would not be afraid to do a bit of cutting and TIG welding to modify the filter mount on those. You're quite a ways from the pump cavity. I think you should be able to put it just about anywhere you like.

Jim


RDMG
Dave R
Northern Virginia
(76 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: Rover 4.0 & Megasquirt
Posted by: RDMG
Date: June 19, 2018 03:55PM

I just realized youre already facing the oil filter close tolerances problem.

I have looked all over for a bolt-on solution to give more remote oil filter clearance, and have only a few ideas:

Theres one remote filter maker that has the two hose ports going 90 degrees from the filter screw post, and offset. One is centered on the cap, the other is to the side of it. I was thinking I could use that, rotate it 90 degrees so the ports face the right wheel of the car, then use hoses with elbows, giving maybe another 1/2 of clearance near the rack. I cant find the exact piece, but you could start with these and cut/fabricate a bit:

[www.summitracing.com]

[old-stf.com]

[www.sailnet.com]

Im hoping to find an OEM part that has a flat face I can drill to match the factory elbow screw holes, but so far Ive struck out.

Im trying to avoid customizing the cover, since its a wearable item.

The 4.0/4.6 cover also has brass plugs for an optional oil cooler. it may be possible to use one or both of those as the in or the out for the remote filter lines, allowing a lower profile custom cap on the stock filter location.



Edited 1 time(s). Last edit at 06/19/2018 03:57PM by RDMG.


RDMG
Dave R
Northern Virginia
(76 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: Rover 4.0 & Megasquirt
Posted by: RDMG
Date: June 19, 2018 04:08PM

Found it!

Look at the Rover/Buick v8 reference halfway down the page. Im not sure, but it looks like part I is a bolt-on piece using four screws. Not sure if the pattern matches the 4.0/4.6 though, might be for 3.5L engines.

Alternatively, part P rotated 90 degrees toward the wheel will give you a bit more room, I think.

[www.mocal.co.uk]



Edited 1 time(s). Last edit at 06/19/2018 04:14PM by RDMG.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5552 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Rover 4.0 & Megasquirt
Posted by: BlownMGB-V8
Date: June 19, 2018 06:20PM

Yeah, "I" is for the 215/3.5L cover and is a lower oil pump cover.

You might be able to use banjo fittings for a tight 90* bend. They should be available to fit whatever threads you are working with.

Jim


RDMG
Dave R
Northern Virginia
(76 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: Rover 4.0 & Megasquirt
Posted by: RDMG
Date: June 23, 2018 08:55PM

I finally got a close & greasy look at my 4.6 this weekend, and I think you can skip all aftermarket angle pieces for a remote oil filter.

The two large bolts on the front cover above the oil filter are each tied directly to an out or in oil passage in the front cover.

I think braided hoses will screw right into those bolt holes.

Then blank off the original filter location using a drain plug or bolt with sealer to seal off the center passage, and an aluminum plate with 4 holes and some gasket material to match those on the machined surface that used to mate with the 70-degree elbow.

Clearance problems solved!


galotis
George Van Horn
Collegeville, Pa
(33 posts)

Registered:
05/13/2014 05:40PM

Main British Car:
1980 MGB 1.9L Supercharged, Microsquirt EFI, ESDI.

Re: Rover 4.0 & Megasquirt
Posted by: galotis
Date: June 26, 2018 07:29PM

Dave, I will look the two bolts, and see if that will work, thanks for all the input.


RDMG
Dave R
Northern Virginia
(76 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: Rover 4.0 & Megasquirt
Posted by: RDMG
Date: June 26, 2018 08:40PM

Youre very welcome, glad I could contribute.

Im still googling the problem, and I think the bypass bungs on the 4.6 cover are M20x1.5 threads. Theres cheap AN12 adapters available.

According to this thread on another board, [www.v8forum.co.uk] , be sure to check the bottom bolt closely, I think the Rover oil filler hoses that used those holes had a special fitting on the bottom hole to fully block off the internal passage.

Another possible option (Ive not seen it actually done, but it looks good) is a Buick 3.8 v6 cover from the late 1980s;

[www.aamidwest.com]

Look for part #s TC181C and TC181D, using the crank-driven oil pump. One of them has an inverted u-shaped oil filter adapter that likely fits right over the MGB steering rack. Would be an elegant answer for a 4.6 megasquirt setup, if it all fits. You may have to buy the later style Buick splined oil pump gears separately. Likely also requires a Buick 215 oil pan, or Rover SD1 oil pan to match the front cover bolt holes, but that gives you more ground clearance anyway.



Edited 1 time(s). Last edit at 06/26/2018 09:31PM by RDMG.



mstemp
Mike Stemp
Calgary, Canada
(189 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Re: Rover 4.0 & Megasquirt
Posted by: mstemp
Date: July 19, 2018 01:56PM

Dave,

That TC181D is an interesting possibility. Would need a water pump to fit it, possibly different rotation? Also not sure what that opening below the water pump is for. Anyone ever tried match one up to the Rover?


RDMG
Dave R
Northern Virginia
(76 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: Rover 4.0 & Megasquirt
Posted by: RDMG
Date: July 20, 2018 01:21PM

Sadly, I cant help further. I dont think anyone has put that style of Buick cover onto a 4.0/4.6. I expect the water pump would be different, but probably very cheap and easy to find.

Google Buick v6 timing cover gerotor oil pump crankshaft, or some combo of that, and some Buick-specific threads will pop up. A few guys have welded two different covers together to make a gerotor pump cover with a distributor boss, and some other guys have retrofitted Series II covers onto series I blocks. Based on the oil-passage discussions in all those threads, I think it all could work with some minimum fabrication. There may be one oil passage off a bit, but Im not sure. Buick changed its block casting in 1988-ish, rebranding it from the 3.8 to the 3800. I think the timing cover above is for the LN3 vin c engines, one of the last 3.8s, but Im not sure.

I cant tell from the internet if there would be an issue with the oil pump drive keys, crankshaft length, or space for timing chain. It looks like one set of Buick pump gears would mate with a rover crank. Presumably the later rover cranks are long enough, and others have used spacers to seal any gaps between non-stock rover covers and later cranks. Some of the Buick guys mention timing chain clearance, but Im not sure of those details.

I did all the digging for these covers hoping to find a non-Rover timing cover with a distributor and a gerotor oil pump, but Im now pretty sure that Buick didnt make one.

The Rover 3.9 interim cover puts the oil filter flange in a bad spot, so bad that you cant drop one into an MGB without moving the rack first. I was hoping Buick would be the solution.

If youre not looking to experiment, Im thinking a remote filter off the 4.0 cover is the way to go.
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