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Gswest236
Scott West
Seabeck, Washington
(28 posts)

Registered:
07/14/2021 09:13PM

Main British Car:
1974.5 MGBGT V8 Olds 215 Stroked to 266

Good oil catch can location? Stroked 215 V8
Posted by: Gswest236
Date: March 20, 2022 11:52AM

After running a 3/4Ē breather hose to my air cleaner housing from the mechanical fuel pump block off plate, I now have oil laying in my air cleaner base. I have a PCV valve on the right side valve cover to the intake plenum. This arrangement seemed to solve my oil leaking everywhere problem. So, now Iím going to install a oil catch can inline on the 3/4Ē breather hose. Iím wondering if anyone else here has had this issue. It seems to be a common issue in general with these older modified V8ís. Prior to this setup I tried a DPR valve setup and that didnít seem to work to vent enough blow by and I still had oil leaking everywhere.
I can say that after the vent was installed on the block off plate, the engine stopped forcing oil out of various seals. Unfortunately the suction on the vent line is pulling oil into the air filter housing.
If anyone has dealt with this particular scenario, let me know how you dealt with it and if you use a catch can, where did you mount it.
1974.5 MGBGT V8, 1962 Olds stroked 215 , now 266 ci., Edelbrock 500 CFM carb.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6274 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Good oil catch can location? Stroked 215 V8
Posted by: BlownMGB-V8
Date: March 20, 2022 10:25PM

I'd suggest you first try stuffing a stainless steel scrubber pad down your vent hose and see if that collects the oil and lets it drain back to the crankcase.

Jim


Moderator
Curtis Jacobson
Portland Oregon
(4533 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Good oil catch can location? Stroked 215 V8
Posted by: Moderator
Date: March 21, 2022 02:13PM

I haven't installed a catch can... but in case you're not familiar, I've posted photos of many of them here: [www.britishracecar.com]


MGBV8
Carl Floyd
Kingsport, TN
(4327 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Good oil catch can location? Stroked 215 V8
Posted by: MGBV8
Date: March 21, 2022 03:58PM

Catch Can.jpg


Gswest236
Scott West
Seabeck, Washington
(28 posts)

Registered:
07/14/2021 09:13PM

Main British Car:
1974.5 MGBGT V8 Olds 215 Stroked to 266

Re: Good oil catch can location? Stroked 215 V8
Posted by: Gswest236
Date: March 22, 2022 04:30PM

Thanks for the input. Iíve got the catch can installed and it has steel wool inside to help keep the oil from getting sucked out. I will report the results. Fingers crossed.


Gswest236
Scott West
Seabeck, Washington
(28 posts)

Registered:
07/14/2021 09:13PM

Main British Car:
1974.5 MGBGT V8 Olds 215 Stroked to 266

Re: Good oil catch can location? Stroked 215 V8
Posted by: Gswest236
Date: March 22, 2022 05:38PM

I found a good location close to the fuel pump block off plate. I got a new plate with a 12 an elbow fitting that works great. We took it for a 10 mile spirited drive and weíre not seeing any oil in the air filter base or anywhere else. So, for now it looks like a win. For some reason no matter how I orient the photo it will only post it clocked incorrectly. Whatís up with that?
0F999AF6-FCDA-4705-A1D6-C4466C765ECD.jpeg


MGBV8
Carl Floyd
Kingsport, TN
(4327 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Good oil catch can location? Stroked 215 V8
Posted by: MGBV8
Date: March 22, 2022 07:04PM

Sometimes phone pics do that.



Gswest236
Scott West
Seabeck, Washington
(28 posts)

Registered:
07/14/2021 09:13PM

Main British Car:
1974.5 MGBGT V8 Olds 215 Stroked to 266

Re: Good oil catch can location? Stroked 215 V8
Posted by: Gswest236
Date: March 22, 2022 07:28PM

Better pic

9ECC9940-BF68-458D-9FC4-347CAE0EE7DA.jpeg


88v8
Ivor Duarte
Gloucestershire UK
(1001 posts)

Registered:
02/11/2010 04:29AM

Main British Car:
1974 Land Rover Lightweight V8

Re: Good oil catch can location? Stroked 215 V8
Posted by: 88v8
Date: March 24, 2022 10:24AM

There's an awful lot of oil mist in the crankcase.
Perhaps that's why Rover vented from the rocker box.
Vent has a Brillo pad (flame trap) in the base then goes straight into the carbs.

https://hosting.photobucket.com/albums/bb76/88v8/RejNelly/Ebay4_zps9e568aa6.jpg?width=960&height=720&fit=bounds

I sort of replicated that arrangement when I went to a 4-barrel, hose to the bottom of the air filter. No oil in there.

I think you're making a rod for your own back, venting off the crankcase.

Ivor


MGBV8
Carl Floyd
Kingsport, TN
(4327 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Good oil catch can location? Stroked 215 V8
Posted by: MGBV8
Date: March 25, 2022 10:36AM

Not much in the timing cover, Ivor. My catch can pictured above rarely has any oil at all in it.


Gswest236
Scott West
Seabeck, Washington
(28 posts)

Registered:
07/14/2021 09:13PM

Main British Car:
1974.5 MGBGT V8 Olds 215 Stroked to 266

Re: Good oil catch can location? Stroked 215 V8
Posted by: Gswest236
Date: March 25, 2022 03:01PM

Iíd rather vent from the valve cover but I cant find a cap that has a vent tube that will fit onto my original style valve covers. I could probably make something up to work. Iíve read a few posts here that mentioned the fuel pump block off plate, so Iím trying it out. First run shows no oil leaks and the air filter base is dry. The catch can dip stick isnít showing any oil yet so weíll run it and check it after each drive. Iíll update here if it has issues.


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