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mgb260
Jim Nichols
Sequim,WA
(2270 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Definitive article on crank driven oil pump swap
Posted by: mgb260
Date: August 23, 2021 03:45PM

Rover V8 can use the interim timing cover, this article is for the Buick motors:

[www.turbomalibu.com]



Edited 3 time(s). Last edit at 08/24/2021 11:42PM by mgb260.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6260 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: BlownMGB-V8
Date: August 23, 2021 09:59PM

He didn't tell how he machined the inside of that gear though did he?

Jim


mgb260
Jim Nichols
Sequim,WA
(2270 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Definitive article on crank driven oil pump swap
Posted by: mgb260
Date: August 24, 2021 11:57AM

Jim , no. Mill?


Jim Stabe
Jim Stabe
San Diego, Ca
(818 posts)

Registered:
02/28/2009 10:01AM

Main British Car:
1966 MGB Roadster 350 LT1 Chevy

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: Jim Stabe
Date: August 24, 2021 05:24PM

I would imagine that the gear is hardened and would have to be ground.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6260 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: BlownMGB-V8
Date: August 24, 2021 05:53PM

That inside corner makes it tough. I'd guess either laser or EDM.

Jim


IaTR6
Dennis Costello
Central Iowa
(189 posts)

Registered:
12/29/2007 02:53PM

Main British Car:
'73 TR 6 '97 Explorer 5.0

Re: Definitive article on crank driven oil pump swap
Posted by: IaTR6
Date: August 24, 2021 08:11PM

I'd just whip out my bespoke broach, and voile', done!
I would like to hear how it was done just because I'm curious.
Dennis


Jim Stabe
Jim Stabe
San Diego, Ca
(818 posts)

Registered:
02/28/2009 10:01AM

Main British Car:
1966 MGB Roadster 350 LT1 Chevy

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: Jim Stabe
Date: August 24, 2021 08:41PM

Expensive way to make one hole.



DiDueColpi
Fred Key
West coast - Canada
(1336 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: DiDueColpi
Date: August 24, 2021 09:20PM

To me it looks ground. I blew up the picture and the edges are rougher than you would expect with a precision cut.
I see that he has two different gears as well. The one in the housing is different than the one used in the description.
The grinding is more evident in the housing picture as well.
No matter how he did it, its a fantastic job well done.
If it where me though, I would have machined the snout of the balancer down to match the 3800 gear while it was in the lathe. Mill the same reliefs on it to engage the gear and avoid all the misery of machining the gear in the first place.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6260 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Definitive article on crank driven oil pump swap
Posted by: BlownMGB-V8
Date: August 24, 2021 10:01PM

I'm with you Fred. Makes more sense.

Jim


roverman
Art Gertz
Winchester, CA.
(3174 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Definitive article on crank driven oil pump swap
Posted by: roverman
Date: August 25, 2021 07:57PM

All this for a gerotor pump ? Maybe just replace with small block mopar? Little heavier as all iron/steel. Art.


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