Will This MGB 18V Cylinder Head Last Another 50 Years?

A quick valve job on this 1972 MG MGB 18V Cylinder Head!
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[@logancarter2134]

I'm not a mechanic or machinist, I do love old cars and trucks and all heavy equipment. I really appreciate your straight forward delivery with no shouting, screaming, drama and crazy music. I love that you and your Dad work together. Your dedication to doing your absolute best on every job is a credit to both of y'all.

[@dickdaley9059]

As a previous owner of a 1973 MGB that never had to tear down the engine, many thanks for giving me a unique view into what I was in store for on the top end. 🇺🇸

[@JAMSIONLINE]

Thanks for watching! 😁

[@Powerwagon563]

The expertise! The precision! The cleanliness! I’m hooked!

[@JAMSIONLINE]

Glad you enjoyed! 😄

[@blargblarghonk]

I typically have used soap water to bubble test valve sealing. I've seen so many times "valve jobs" that the valve leak worse than the old ones. Great job. You are one of the machine places that knows what the hell they're doing.

[@mickvonbornemann3824]

Chrysler Valiant straight sixes had a reputation for smoky valve stem seals. Can't remember though if they were the slant 6 ones or the Hemi 6 ones though

[@yadinganon5037]

Definitely one of my favorite channels. It's stunning to see the work you do - the attention to detail and attention to a perfect finish. The explanation and sharing of information is fascinating and interesting. Keep it up!

[@JAMSIONLINE]

Thank you for watching! We enjoy what we do and it’s fun to share it with the world!

[@mftmachining]

As a certified mechanic i say: I rebuild and modified hundreds of engines and transmissions. You guys do state of the art work. Top-notch. Love to watch your videos. Best regards from a Machinist/ Toolmaker/ Mechanic from Frankfurt/ Germany.

[@gregmooradian3711]

I love your meticulous attention to detail. So hard especially today to find conscientious mechanics like yourselves that take pride in their work. The Father-Son aspect is another great blessing in working with those you love. Love your videos!

[@bennyfactor]

My dad had an MGB when it was new and the only thing he's ever said about it was that it was fun but every time he took it to the mechanic, which was a lot, the guy would say 'I can get this thing running perfectly in the garage, but as soon as you take it down the street it's gonna start coming out of tune'. So you may have made this cylinder head even better than new.

[@harrygatto]

Highly professional work and a great explanation. Takes me back to the 1960s when I trained as a mechanic in a BMC dealer.

[@olp852]

Love the totally honest nature of these videos.

[@63MGB1]

You guys do great work! I say this as an owner of MGBs for 49 years and as a retired British car mechanic and engine rebuilder who has rebuilt dozens of MGB engines and hundreds of other engines. Just found your channel and will be watching!

[@talharafique8913]

Its a great pleasure for me to watch how deeply you check each thing to make sure everything meets the standard requirements....

[@billyboyblue17]

Currently my head for my 74 MGB GT is in the shop for a porting job in a shop that specializes in fast road and racing engines. It was with great interest that I watched this video since the same steps are currently being done to my head. I really enjoy your channel and have been slowly going through all the vids that pique my interest. Great work, great videos!

[@MarioFunk]

It's a joy to watch quality machine work bring performed! Love MGs and glad you showed this head such love.

[@morrisg]

I had a 1960 MGA 1600 when it was 9 years old and cheap enough for me to afford it. The book said it made 62hp when new, but not anywhere near that when I had it. It got me around town well enough, but a week didn't go by that I wasn't fixing something on it, starting with the clutch slave cylinder when I drove it home after buying it from a private party. Learned a lot about fixing cars with that MGA, learned so much that I bought a used 1972 240Z when I got my first job and could afford something that worked most of the time. Thanks for the nostalgia trip! PS: That MGB is a 1.8 liter displacement engine, not an 18 valve head as your title suggests.

[@redbarchetta8782]

18V on the B series engine refers to the model. 18V were the last series they had.

[@georgecaspira3637]

Loved this, the effort you put in to your work, the pride. Hope you can talk to the customer as a follow up and see how the head is doing.

[@Curttttttt]

Very impressive! Very professional no Bs.

[@mickvonbornemann3824]

Oh that brings back memories. Back around 1985 I did a valve regrind on an 4.4 litre Leyland P76 all alloy V8 engine. basically a Buick Rover 3.5 litre alloy V8 but made in Australia with a higher deck height for the larger capacity square CC (the bore 'n stroke being the same). Turns out they have deck heights about the same as 340 or 350 CI cast iron Buick engines. It had a blown inlet gasket & really coked up valves. There's a bit of a procedure getting those inlet gasket / valley covers installed, which must be done right. Also unlike the Buick/Rover variants, which have shaft mounted valves, the Leyland has stud mounted valves. Also I had a couple of Austin 1800s. Amazing cars with hydrolastic suspension & better interior room than a Ford LTD. The front seats can been moved forward & their backs reclined so they level up with the rear seat stub, forming a double bed. They also had the B series 1800 BMC engine, like the MGB, but with a slightly torquer head/cam & one big SU instead of 2 smaller SUs. The output shaft was connected to a gear train that ran down to the gearbox in the sump. They had a multi-cable shift that gave really smooth gear changes. Great cars but one had to get used to the understeering, esp. in the wet.

[@liamtobey2936]

Amazing attention to detail!! Might have to send my Nissan 280zx cyl head to you guys!

[@stevenclarke5606]

Great job, it’s absolutely fascinating watching the machining take place, it’s something that very few people will have seen before. You realise how much skill and knowledge is required to be able to do this.

[@j.curtissims1510]

My first car was a 1968 MGBGT. So, I really enjoyed watching this video.

[@philadams92]

Great work from a UK viewer, wish you were around in 1985 when my B series head was shot! Great job!

[@kevowski]

Your attention to detail is extremely professional and your videos are thoroughly entertaining. Seeing something old and shabby being turned into something looking brand new is so appealing plus with the equipment you guys use, the finished product is better than when it was manufactured! You are true craftsman! Thank you for sharing and a new subscriber here👌🏻

[@thomasdietrich8544]

Always enjoy your program but this episode was special to me because growing up I had a 1967 MGB-GT. Had the head porteded & polished with, if I recall correctly, hidural bronze valve guides. At age 71, I really miss that car.

[@ryzlot]

Nice work and great attention to production values JR

[@piersonmcmillin6481]

There’s a lot in this video that I don’t understand quite yet, but these videos are teaching me a lot, and they are satisfying to watch!

[@chrisfennell1431]

This video was kind of dejavu for me as I owned a1972 mgb when I was in the army; I loved that car. Thanks!

[@BangerFleet]

I’m amazed you found an MGB head that wasn’t cracked. You can still buy them luckily. With the exchange rate from UK the way it is they’re only $700-ish from Brown and Gammons.

[@dev-debug]

Don't see many MGB or Triumphs anymore. I've owned a few Triumphs and 1 MGB but gave them up back in the 80s. Getting parts now in the US is probably a pain, it wasn't that easy in the 80s. Nice job on the head.

[@n4thb4dc0]

I love machining like this and like longer videos

[@davidstuck2866]

I love watching your and your fathers work. It's high quality work that both of you take the time to do correctly. I was a mechanic when I was working, so I do know quality work when I see it. oh, by the way, congratulations on getting married! I hope you and your wife have many happy years ahead of you. and at least a few "rug rats" to keep you busy!

[@SupraBdub]

Man, you're speaking my language ! Awesome. Now I've never machined a cylinder head but only garage them or had a shop do it, but I've only used jzs, 4g63s and old GM motors that have all never needed more than lapping and polishing and a nice seal . Great videos, thanks.

[@jayinmi3706]

Seeing freshly cleaned, blasted and machined parts is so satisfying.

[@nomadicviper76]

i love how you let eveyone know what tools, and what size, i know im not going to ever do this but youre actually awesome to listen to. keep it up please!

[@magnusdanielsson2749]

Nice job as usual. I do think however that a 30deg valve seat would benefit those heads.

[@Whateverpoopiepants]

The problem with that head is ten missing valves and I won’t even charge you for diagnosis. Good deal . Thanks for the videos my dude.

[@ataxpayer723]

MG used to store the additional valves in the small cardboard box that was placed inside glove box, located in the car's dashboard. This was often the cause of an annoying rattle that was difficult to track down by even the most experienced mechanic

[@floydrhodesiv5733]

Top grade professional machine work.Jim you have become a professional automotive, engine power ,machinists. You have learned all your father's tricks n approachs to repair engines. I'm sure you also research some newest tooling and practices for modern engines. Keep up the good work.

[@LimeyDude]

Another great video! Reminds me of the 1293cc mini I built with my late father. That little thing created 93BHP :-) My head was built by the A series engine guru David Vizard! Anything David doesn't know about the A series isn't worth knowing.

[@Mountain-Man-3000]

A Vizard head is indeed a treasure!

[@kbrickell4732]

To remove the valve seats put a small weld on the seat and lever out with a pivot and chisel and hammer..the chisel is laid flat the chisel end placed under the weld and hit the other end of the chisel on the other side of the pivot

[@r.d.riddle2068]

Back in '72 when this engine was new, I could always tell when the Denver Sports Car Club had an event. For days afterward I'd be fixing bent exhaust valves on these little MOWOG motors. They all had tachometers, but no one knew how to use them.

[@JAMSIONLINE]

LOL!

[@kenclarke1952]

Brilliant ! reminds me of when i was a mechanic in the 70s . I used to own an work on MG s . Used to hate grinding in valves ! (uk)

[@motion24527]

Very nice work, much better than most. I can offer a couple of suggestions as I've machined countless MG heads. Normally .002" exhaust guide clearance is the rule but I've seen guides seize on B heads with clearance less than .003", especially the center 2. For this reason, I use bronze liners, also honed to size at .002". The easiest way to put the valve heights back to OE spec is to measure the tip height from the valve cover surface. 1.562". is the number for both double and single spring heads, even though the spring installed heights are not the same for both. I have a bridge mic similar to yours that I use to measure this as I'm cutting the new seats. This goes for all British heads and I've recorded heights for most of them. It puts the valve geometry back to the original design.

[@kevinferry126]

I enjoy watching your videos. When I need machine work done on my stuff I intend on making the trip from Golden to you guys. Your quality and attention to details is stellar!

[@americanpatriot2422]

I wish you were closer, I would send you a lot of MGB engine work.

[@thatboiram5.2-cq4qf]

Going to rebuild my head's with the help of this video thank you

[@neildare2852]

Love your channel Jim!! Nice to see that you are still working on motors, that originated here in my home country of the UK! The quality of your work is a real education and I'm glad to see you keeping the dream alive!!👍

[@JAMSIONLINE]

Thanks for watching!

[@joannaatkins822]

As always you've done excellent work! I do appreciate seeing the less common engines and components you work on. To me it's all about seeing a greasy, sad looking hunk of metal and it being turned (milled) into a beauty in it's own right, clean and sharp

[@JAMSIONLINE]

Thank you! We get a good variety in our shop lol

[@waiheke109]

Wow Cool Learning heaps on this channel

[@billramsey5252]

Love watching these videos and the explanations that go with them!

[@bruwin]

I'm just here to see if anyone has mentioned shake hands with danger yet. Seriously though I love how you explain your entire process.

[@JAMSIONLINE]

Danger is my homie 😎

[@rossswinton5061]

I'm super impressed with your work. Definitely subscribing to your channel!

[@Velkanis]

man i wish i had a machinist like you people! right now i have a head thats stupidly hard to find and expensive that needs extra material added to the mating surface with the block because someone thought it would be a good idea to ground it where even the witness marks are gone and had 2 headgaskets to recover height....

[@mgcarma]

Great work here, thank you for posting the detailed videos.

[@robertf6344]

Refreshing to watch excellence in action

[@dosobrain]

Amazing work as always. Love watching these videos

[@warlockpolarbear724]

Every machine shop should have this on a loop in their front desk and sent to the customer. Never knew how much work went in to this.

[@nateisgreat8]

Watching these videos is therapeutic for me as a diesel tech. Keep up the great work guys!!!

[@JAMSIONLINE]

Appreciate it!

[@LateStartRacingTeam]

We have a MGB project and our head doesn't have hardened seats and will need this done too!

[@tinkmarshino]

Boy it is amazing to see how cool the new machines of this area are.. the process stays the same it's just new tricks and machines they have to do it.. especially when it comes to valve guides.. for us it was the old stove and freezer tricks.. But then the 50's - the 70's where great times for hot rods.. Thanks for sharing brother..

[@JAMSIONLINE]

Thanks for watching!

[@tinkmarshino]

@@JAMSIONLINE It's always fun son.. you and pop put out good stuff.

[@bobmeyer7009]

Nice to see a shop that values and practices quality work!

[@lovesloudcars]

From massive miniwheats to MG heads, I always enjoy your content.

[@Stowns03]

Nice work

[@AndersVestlund]

This work is just mesmerising and every time I watch a video of yours I learn something new. Great content! 👍🏻

[@mikegermain7033]

I’m always so amazed at the accuracy of your work.

[@Clarity5970]

Nice honing setup .0001 bore gage looks great

[@MrJalyles]

I wish there was a shop in Chattanooga that did the quality work you guy do. I have an engine that would always leak water into the oil. I put 3 head gaskets on it and then gave up!!

[@jimbobbob42]

I remember years ago seeing an MG head, all swurl polished on all surfaces and in combustion chamber too. Don't know if it did any thing but it was beautiful to look at

[@CraigLYoung]

Thanks for sharing 👍

[@JAMSIONLINE]

Appreciate you watching! :)

[@scottosborn4820]

Very nice work! Im sure your customer will be happy!

[@JAMSIONLINE]

Thank you!

[@bigears4014]

No rushing and quality workmanship

[@ianlitchfield9273]

MGs we're made at the MG factory in Abingdon, Oxfordshire 🇬🇧 about 1 mile from where I live. The site is now a Police station & housing estate with nothing leff to show its great history

[@Veryfastslowcar66]

Such incredibly well guided and instructive videos! Keep up the amazing work guys❤

[@nickizzett1896]

Hi I don't normally comment on videos but I have to say I am impressed and hooked on yours. It's so satisfying to see the quality of workmanship you put in and the finished product. I love how you explain each step in detail. I think you could slow down and space out the commentary in the videos as sometimes there is a lot to see and hear in a short period of time. I have a vehicle that I am due to restore in the next few years. It currently has a seized engine that will need a full rebuild. It is a large straight 6 diesel engine. I feel like I am swatting up on engine machinists lingo by watching your videos! I have a few questions that might be best explained in a video: 1. Why are there different valve seat angles for intake and exhaust? Why does the intake often have a 3-angle profile but the exhaust just one? 2. I'd be interested to see the differences between petrol and diesel engines in head design. 3. I'd be interested to see a few blocks and heads side by side that represent technology developments over the years. Use of different materials and feature changes for example. This MGB head is a good example of the old school stuff. Thanks again and keep up the good work 🙂

[@jpoplin1]

I’m A manual machinist these videos are great thanks!

[@JAMSIONLINE]

Thank you for watching! 😃

[@dbrandon4528]

That engine is going to make more power then ever has! Great head work

[@codo7]

Thank you. I witnessed about twenty years ago or so, here in Seattle, the pour of babbitt bearings for a winch made for commercial fishing. A dam is built around where will be the pour in order to contain the molten babbitt which melts at a much lower temp than iron...so I think that kind of equipment is still in use around the country, is not necessarily automotive and that various machine shops deal with equipment like that from time to time. Farmers and fishermen use it, perhaps loggers, foundries...

[@betobsbf]

Work of art

[@JAMSIONLINE]

Appreciate it!

[@johnhufnagel]

I ever have to have the head done on my 72 MGB, i'm sending it to you.

[@raymondsmith1956]

Great video. I just found this channel and I will be visiting on a regular basis!

[@asambi69]

Love the attention to detail you put into your work, If I was in the US, I know which shop would get my machining work.

[@jefftaylor1247]

Nice work, looks great!

[@djosbun]

Your dad has three jobs: farmer, machine shop business owner and KZbin star. I raise a glass to your dad!

[@JAMSIONLINE]

He’s a legend haha! Gonna work till the day he dies. Not because he needs to, but he wouldn’t know what to do without it lol

[@saeedhossain6099]

when you were checking your valve seal with the machine paint, for a second I was saying, Oh Damn, he's manually lapping those valve seats!!! I think I'm showing my age and Englishness

[@cozmot5260]

I wish i could get this done with my 99 chevy suburban. She's just about to hit 227,000 and I'm trying my best to keep her alive and well but time is starting to get to her, hoses are starting to leak, main seals on the motor (5.7 vortec) are going and I'm loosing a good amount of oil, valve cover gaskets are goin, she just needs some love but my broke ass can hardly afford to live 😅. Maybe one of these days I can get her to someone that knows how to refresh engine's and get her running back at 100% hopefully it's before she dies on me cause I'm about to be living in the old girl if I can't find a place to stay! Great video though I love seeing this stuff, it makes me think that with some studying and practice maybe I could do this and that way I won't have to pay someone an arm and a leg to get this done!

[@anthonysantiago1999]

I really love your attention to Detail!!! Would love to send you Guys my 68 Pontiac Heads for a Rebuild and Hardened seat install. Great Job..

[@GaryT1952]

Great content, well presented...thank you

[@daveA2024]

What a nice job, the basic design of these engines dates back to sometime in the very early sixties, and this engine design was fitted in almost all the BMC cars in various sizes from the Mini right through to the top-of-the-range Austin Westminster, Wolseley, and also the MG`s, I owned quite a few cars fitted with this power unit, there was limited scope for tuning, because the combustion chamber was in the head, skimming the head to raise the compression ratio was possible, it was possible to enlarging the inlet and exhaust ports quite a bit to match the manifolds better, along with polishing the ports and better carburation gave a reasonable power increase, but you had to spend a lot of money to get a big power boost. The trouble with doing all that was that apart from the MG`s the rest of the car range was unable to cope with the extra power and speed, which made cornering very interesting.

[@murphyr31]

And people wonder why engine work isn’t cheap, you pay for expert knowledge and ability. Great work

[@jrpumper]

what i would give to have the talent you got and you get to work with your dad and thats gotta be priceless

[@ashleyweston5420]

Hi guys, interesting video, it brings back memories thanks for posting. I'll probably be shot down in flames here but if I remember correctly the 18V engines didn't come out until the late 70's or early 80's. 1972 they would have been 18GG or GH series. Either way the best thing you can do with this engine is overbore it and fit pistons origionally destined for a Lotus Cortina to bring it up to 1950cc. A useful increase in capacity and power but more than that it makes it run much nicer I think because the engine is now less of a long stroke.

[@erinlachman7602]

Great to see the work. I wish I had the ability and tools to do this work but enjoy watching your work.

[@Smith944]

love your workmanship.

[@brandenpatterson2776]

Great work

[@lfisherjr]

That is Very Cool thank you for sharing.

[@mikemarshall1394]

Very nice clean work. I like that you take the time to do it right so it will last

[@JAMSIONLINE]

No reason to do something if you don’t do it right!

[@lawrencesargant1669]

Great job ❤

[@Mati05jp]

Good work!

[@alanrobison3298]

Awesome video!

[@briandailey7274]

Wow nice work. I did the body work to a 72 mg. Really cool what you do

[@JAMSIONLINE]

Appreciate it!

[@1971VoiceoftheMummy]

Nice Work!