Episode #4: Maggies Engine-Transmission-OD Rebuild (72 MGB)
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- Опубліковано 23 жов 2023
- Episode #4: Maggies Engine -Transmission-OD Rebuild (72 MGB)
Maggies Engine, Transmission and OD have been rebuilt. Ride with Mechanic Steve to understand the basics of the internal combustion engine, considerations in picking an engine rebuilder, how 30% more HP was achieved in the Street Performance Rebuild, the specific machining and assembly steps, Maggies distributor & SU carburetors were rebuilt as well as overall costs.
00:19 Welcome & Episode Rundown
02:24 4 Stroke Engine Basics & Ways to Increase HP
05:49 Why Rebuild Your Engine as Part of the Restoration
07:19 Considerations on Picking an Engine Rebuilder
09:58 Maggies Engine Rebuild
12:09 Engine Rebuild Design Considerations
19:27 Engine Rebuild Machining Processes
26:44 Engine Assembly Steps
30:58 Maggies Transmission & Overdrive Rebuild
32:22 Maggies Carburetor and Distributor Rebuild
34:33 Maggies Engine Rebuild New Parts & Final Specifications
35:05 Restoration Cost Update
36:00 Episode Wrap Up
36:34 Episode Outtakes - Авто та транспорт
Amazing episode, very informative for a novice
👍🇬🇧 - the video I have been most looking forward to and you did not disappoint; in fact, you surpassed all expectations -- I believe this might just be the best I've ever seen and I've seen many. Everything was perfectly presented and covered from start to finish, including your step-by-step breakdown of processes and professionals involved; the animations, parts list and cost breakdowns were just icing on the cake. I remain blown away by what you've done here, Steve! Major kudos! ⭐️⭐️⭐️⭐️⭐️ Thank you!
As an MG enthusiast I have found these videos both very educational and entertaining! I have been going through each episode and I am excited to see how Maggie looks and performs at the very end! Keep it up!
Sounds like you have the same type of blood crossing through your veins as I do! Progress has been slow over the last 7 months given some health issues, but I am back on track and spending time in the garage again which puts a smile on my face.
Enjoyed watching the summary of the engine enhancements , correlation of parts replaced to diagrams and the spendometer.
Hello Gavin and thanks for taking the time to watch the episode! Maggie and I are glad that you are enjoying the content. Although I had an engine rebuilder re-do the engine, I learned so much in the process and thought that it might be helpful to share that with others who are thinking of doing the same. I have an engineering background and like to explain all of the details which might be overkill for others. Tracking the costs has been interesting. There are many different types of restorations and I hope that sharing the details on what I am spending will allow others to determine where to allocate dollars in their own restoration.
first time viewer here......wow, extremely well produced video and very educational. Keep doing your thing!
Thanks for taking the time to watch the video as well as your kind comments. And thanks for subscribing......Maggie and I greatly appreciate you riding along with us on this adventure. I have both a passion for these cars as well as telling stories via video. My engineering background tends to have me include the technical details beyond just wrenching. The next video which will drop this weekend is on the basics of the front suspension and steering. I think that you will enjoy it! Thanks again for watching and taking the time to comment!
Great episode!
Thanks Matt! While I have always wanted to rebuild an engine, I decided to have someone who has done hundreds if not thousands of MGB engine rebuilds do it instead. I learned so much in the process of working with the engine rebuilder and researched the rest to fill in the pieces of the design, machining and assembly processes. I thought that others might want to have a video to learn from. I think that it has been the most enjoyable video to create. It also fully documents what's been done to the engine which will come in handy moving forward. Thanks again for your continued interest in the project!
Running the D9 cam in my B and love it. But one thing, watch for the stud on the cam side of your connecting rod and cam clearance. Delta makes cams from a very thick stock and there can be clearance issues. And if using ARP studs, make sure the stud doesn't rotate when torqued. Mine did and the stud made contact with the cam on #1 and #2 every rotation. I too had the big valve head reported as well.
P.S. There's a bit of valve overlap on the D9 so expect a cool sounding exhaust note and some nice burbling and popping on deceleration. I timed mine @ 105 to get more torque lower, but still have juice on higher revs.
One other P.S. You can bore a B to .080 over, but you'll require forge pistons then as that's all easily available these days. Mine is bored .060 as I had the pistons for it. The Payen gasket is good for .080 max.
Such a great reply Ed ....filled with valuable learnings. Sorry to hear about stud to cam contact. Were you able to find that out before firing the engine up? I hope so!
I can't wait to hear what the engine sounds like. Are you running yours at a higher idea to compensate for the "lupines" of the idle?
awesome video!
Glad that you enjoyed the video. Thanks for riding with Maggie and I !
Fantastic graphics. Great summary of the engine rebuild process. Gives us pause to ask, mmmm, did I remember to do that?
Glad that you enjoyed it Craig!
Well documented ; Great Chronical Order of Disassembly and Assembly with Caveats . 😊
Thanks Al! When I started contemplating the engine rebuild process, I knew how engines work and had a high level surface understanding on how they are rebuilt. I was fortunate to have a person rebuild my engine that rewarded my inquisitiveness by spending hours explaining things to me about the approach, process and trade offs. I wanted to do an episode where I captured what was done to the engine both for future use a part of the cars history and also for others to learn from. It was so much fun putting the episode together. Thanks for the positive feedback and taking the time to respond!
Glad to see Maggie is on track to being road worthy! Thanks for the video!
Done a lot of work on my 72 MGB! It’s road worthy now but still have a lot more to do. It has been a lot of hard work but well worth it.
Older folks get freaked out by a young guy like myself driving such a car around haha
Can’t wait for the next video! Good job!
Hey Jordon.......nice to hear from you and thanks for spending time with Maggie and I. Glad that you liked the content. I am glad that you own one as the next generation needs to get involved in these cars for them to continue to survive. So what have you done with your MG......would love to hear about it. Next video up will be replacement of the fuel tank.
@@MaggiesMakeover72
I’ve actually replaced my fuel tank.
Replaced the whole cooling system. Upgraded to aluminum radiator.
Rebuilt the carburetors.
Upgraded to an Electronic Distributor.
Some engine work. Upgraded to duel sprockets/timing chains.
There’s probably a bunch of other things I can’t think of off the top of my head but it has been quite a lot of jobs!
Going to replace the camshaft once I get some free time. I work two jobs and go to college full time so not too much time to wrench haha!
Obviously I would love to fully rebuild the engine like yours but… I don’t have the time, resources, or the money so I’m just trying to do my best haha!
Wow....thats quite a bit of work you have completed and that's great for your car.....good job! I never had the time or the money to work on my MBG until I was retired. It's a life long journey with these cars so just do what you can do now at your own pace and make sure that you get it to a point where you can drive and enjoy it. The rest will come later.
Great engine rebuild details. Thnx for sharing who you used for the rebuilding too. 75k - 100k? Was hoping it would be more with all the modern technology used, but I suppose the extra performance dialed it back a bit. Thanks for the vid !
Anthony.......thanks for spending time to watch the video. Glad that you liked and appreciated all of the details. Dick is a great guy and I truly enjoyed working with him. He took the time to explain things and made me educated buyer. That was his estimate on how long the engine would last which I assume is based on his experience rebuilding them over the years. Time will tell.
Great to see you back!. For awhile I was afraid you got too mired in other things to make updates.
I like how you went into depth on the engine rebuild. Most people have no idea what it takes to rebuild an engine and how additional HP can be added. 30% additional HP should put it around 120? Your machinist took a lot of precautions to make sure your engine parts and assembly met tolerances. That is key to a long lasting and powerful engine.
I've had to remove the fuel tanks from both my MGBs. The California one ('75) was no problem as there is absolutely no rust anywhere. But on the rusty '72 I had to take an angle grinder to the rear bolts to get them off. The nuts are captive nuts and will spin if the nuts are rusted on. There is only a thin clip that prevents the nut from turning. I was able to get to all the nuts with a socket but for the two behind the rear valance. There is a fuel return pipe next to the fuel tank which is in the way and needs to be removed.
There are two different size replacement tanks. If you are looking for aesthetics go with the original size tank. The larger one will stick out a bit. I hope that helps if you have not already replaced your tank.
Great video.
PS: How are you doing on your search for a body and paint man?
Thank you so much for the positive comments and I am glad that you enjoyed the episode. I hadn't posted one in 5 months as I was taking care of a family health related issue. Given my formal education in Engineering, I found the design, machining and assembly processes to be fascinating. The episode attempts to tell that story as a way to also document what was done to the engine for future owners. A few of my buddies inferred that the episode was too long, but I decided to include all of the details none the less.
I have replaced the fuel tank (went with the smaller one) as well as torn down the entire front end including removal of the front suspension crossmember. I will be rebuilding that in November and videoing as I go. Unfortunately I will be having shoulder surgery in early January that comes with a 5 month rehabilitation period so not much will get done as far as working on the car. I do have the video content for all of the above and will focus on creating about 4 additional episodes during that timeframe. In a perfect world, I would have the bodywork and paint being done as I heal, but that doesn't seem to be in the cards as I am still searching for a person to do that work. One of the shops I was thinking of using stopped accepting new restoration work in order to focus on their collision work while the other one is shutting down due to the health of the owner. So I am still searching.
Thanks again for checking in and great connecting with you again!
Hello Steve and thank you for your videos. You provide alot of useful informations about MGB.
I've been particularly interested about this one because I am planning to rebuild my '68 engine in a next future and my plan is exactly the same you used on Maggies.
Anyway I'm a bit concerned about two aspects when increasing C.R. and subsequent HP on MGB. First one: temperatures. I'm curious if this modification has a negative impact on engine temperatures and, in case, how you plan to deal with it. Second concern: What about rods and crankshaft? Is this increased power risking to damage one or both of them?
Thanks for taking the time to watch the video and reply. I am very happy to hear that you found the video useful. While the engine rebuilder did not say that the car would run hotter, I believe that the new premium Mashimoto radiator
( mossmotors.com/459-663-premium-aluminum-radiator-manufactured-by-mishimoto )
with 25% more cooling capability that I am planning on installing should help if need be. If additional cooling is needed, I could always add a cooling fan. I asked the same question if the lower end of the motor could handle different pistons and street performance cam and he said that the 72 model year could. He has rebuilt literally hundreds of these engines with the same performance modifications and has not seen either of these issues. With that said, time will tell when the engine gets reinstalled and I drive the car. Let me know if you have any additional questions and again thanks for riding along with Maggie and I !
Good information….however the music was distracting
Thanks for taking the time to watch and provide a comment. There have been a couple of people who have had a similar comment as yours so you are not alone in your opinion. Perhaps I should do an episode without the music to see what the feedback is.
@@MaggiesMakeover72I did’t notice the background until someone said something, I tuned it out. I suggest just tone it down a notch or two and use some British period rock wouldn’t hurt either.
@@RedDawg2k thanks for providing your feedback! Nothing quite like the British Rock of the 60's and 70's. I have decided to only use music during the opening and closing sections and eliminate it during the wrenching portions. Hopefully that will have more people watch the complete videos.