280 MG Tech | Weber Engine Ventilation

[@dennisvassslluzxo5930]

Where did you get the updated Weber air filter with the hose port right in the filter ? Is there a part number ?

[@nouseformyname3788]

Sir, you are incorrect as to the recommendation from Weber regarding the small plastic fitting at the base of the supplied air cleaner. That fitting is there to be connected to the INLET side of the engine ventilation circuit (ie-to supply filtered air, usually to a ventilation intake on a valve cover). The engine blowby (out of the PCV valve) is typically plumbed directly into the intake manifold between the carburetor and head. This information is directly from genuine Weber 32/36 DGV installation instructions.

[@0hjaa3.06]

I wouldn't connect any hose to the air cleaner. Rather just use catch can and let the crank care pressure to go through special filter into outside air. Like it was done before emission control.

[@coxyscustoms4979]

I love you, this video triggered me so much as I was watching it hahaha im a 3rd yr apprentice and I know this stuff

[@nouseformyname3788]

@@0hjaa3.06 this works, but the reason PCV is still in use is because it helps apply a slight vacuum to the crankcase under certain operating conditions which can help pull the rings into the cylinder walls, which can help them seal, which makes everything work better, including reducing blow by!

[@shobud7561]

Sir your total wrong on the size of the fitting being too small to ventilate the internal pressure of the engine ! There is no way an engine can produce the amount of internal pressure you speaking of from the supplied fitting that comes with the Weber Carburetor ! If an engine is building that much internal pressure to blow out any seals , you have major wear on the piston rings or cylinder walls and pumping compression into the sump ! The Weber supplied fitting is at least a 3/8 ID which is more than sufficient to vent the engine. If having to use a 1/2 hose to vent the internal pressure of a engine is a sure sign it's time for an overhaul .

[@jeffreywin584]

What a pleasure to listen to an expert mechanic and expert teacher!

[@damiencoleman7411]

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[@abdullahmarlon8659]

@Damien Coleman Instablaster :)

[@damiencoleman7411]

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[@damiencoleman7411]

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[@abdullahmarlon8659]

@Damien Coleman glad I could help =)

[@TrevorMarty69]

Cool intro. Wow, I have a weber and I just got that same air filter. I will look over it and see about more air. Thank you for this.

[@guillermogrecco4145]

vent to atmosphere through an Oil Catch can ?, It worked for me

[@boomerguy9935]

John Twist rules! I've been watching him for decades. He has the best job in the world.

[@mikes4408]

John: Sorry, I have a weber also (came with the car) anyway can you tell me the best way to start my 67 MGB when the car is hot ( sitting for about 15 min)? Thanks!!!!! Mike

[@Irkin_Bollikans]

Seth Rogan's father?😂

[@MrCrankylady]

Great video! Two questions: 1. I am installing. weber on a 73' midget and and curious if there is some case up if the improved inlet on the filter you show here and 2. are you suggesting no PCV valve? Many thanks!

[@toddavies1326]

Just run the breather into the air cleaner - with a decent size inlet

[@Craig13989]

Thanks for your time. I really enjoy your videos.I missed you in June while you were busy traveling. Is the Engine rebuild class on for the winter again this year?

[@nevillegoddard641]

Question ..my temperature gauge not working. I did a elictrical test and the gauge worked .I put a different temp sencer on the head .still not moving

[@dennisrivera]

How you solved you trouble? I have the same problem... Thanks for the help

[@jamesryanst.laurent4080]

sir would I be able to put a ramflo 1000 on this carb with this engine. I have a 1971 mg midget.

[@RandallChase1]

So I have a Webber carb. Could that explain the problem I’m having here? kzbin.info/www/bejne/jofHfKF-qNSChLM I made a short video of my Anti-run valve blowing smoke.

[@KingComputerSydney]

Hi John, you said the SUs provide "better driveability" what does that mean? I have twin SU's that I've spent a small fortune on with the local carburettor "expert" and it still runs like rubbish and was looking at replacing them with the weber. What issues are there in terms of power, performance and reliability with the weber vs SU twin carbs?

[@toddavies1326]

What’s the issues with the su’s ? Weber’s / su’s - you can get both to run great

[@boomerguy9935]

As a previous MG owner, I prefer the SU carburetor. Why all the hype about Weber carbs exists is beyond me. The Weber lovers try to "fix something that isn't brroke" when they supposedly, "upgrade" to Weber's. SU carbs are simple and adjustable. They work.

[@MultiPetercool]

Understand that late model MGB's had the "Stromberg Strangler" carb and the air pump. Removing those and adding a Weber was and still is a decent low-cost upgrade! ;)

[@boomerguy9935]

@@MultiPetercool BLMC's approach to safety and emissions was terrible. My experiences with the BMC models were wonderful. In the 1970's the British government jumped in to help Leyland destroy the previously successful BMC cars. All the Japanese auto manufacturers had to do was sit back and watch the British car industry implode. So sad....

[@phillipc773]

Hello, long time watcher new MGB owner- Good Day to you! Thank you so much for the videos and the expertise you share! This kind of resource is invaluable I currently have this similar weber conversion on "Shakira" it seems to work alright . I do have a question about reverse lights as mine were both disconnected and once re-connected (new bulbs) did not illuminate, traced the GN and G wire to a reverse lamp switch in manual schematic (also has the 3 wires fused to 1 in the boot which appears as a dot on wiring diagram) runs up on the passenger underside connecting to switch near gear box- Do these go bad ? could you perhaps do a video on this scenario - Thanks Again Phillip

[@speedfreak8200]

British equals quirky

[@newyork819]

What about the vacuum for the distributor advance? Where should it be connected to the carburetor? Thanks.

[@josuer.7200]

Looks like someone have some hard feelings....lol

[@MGB-learning]

Great info! Welcome back!

[@terryhalbert1141]

Good info thanks..I just picked up a 1979 MGB with a Webber and electronic ignition.Has a license plate from 2005!!

[@josephfriedrich9792]

John Maguire, seans brother

[@mrblowhard2u]

I always seem to learn something new when I watch your channel. Today it was the word 'exacerbate' (to make worse). Thanks John.

[@sethjones5250]

it almost looks like you drilled through the k&n filter and ran the hose into a fitting installed on the filter. Is that right?

[@mikes4408]

Seth Jones It would have been very helpful to see what he did.

[@UniversityMotorsOnline]

Seth Jones Yes, I drilled a hole right through the air filter and used a fitting I purchased at NAPA with a nut on the back.

[@sethjones5250]

Universitymotorsltd Just guessing clearance issues prevent the addition of an L shaped pipe to the top plate on the filter. Is that right?

[@boduke548]

this video is great! this fella looks like bob crane

[@minerblue9641]

boduke548, I don't trust people like that man.

[@carlosmjimenezcruz5006]

boduke548 z

[@fredgordon1788]

Take the hose off

[@laurajanetexascigarmaven6788]

I have a 1977 MGB that came with the Zenith Stromburg carberator. Unfortunately that Siamese cast iron intake/exhaust manifold was broken! So I went with and aftermarket and separate exhaust header and intake manifold. I also went with the Weber two barrel carb. There wasn't a vent pipe to the valve cover, but there is a vent, breather, on the forward tappet cover and that is piped overboard thru the lower shroud. This video has me somewhat concerned. Should I be? The car runs great!

[@laurajanetexascigarmaven6788]

You have me worried about my B!