Subaru Build Part 4: NEVER assume ANYTHING!
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- Опубликовано: 8 сен 2024
- Another Subaru Saturday with Issac as he continues with the assembly of the Subaru bottom end, but it’s not with out it’s set backs and a good example why we never assume anything in this game!
"A little loose is better than a little tight"
This is like the Engineering 1st commandment 😂
...especially in a FI environment
If this all went together smoothly we wouldn't learn anything. I'm really enjoying the warts and all approach to this build Issac, learning along with you as you progress this build. Thanks !
Alright Isaac, getting into the details now. You need to create an assembly process list. This is a list of all of the steps needed to assemble this engine from start to finish, every detail so the net time you tear it down you have a list you can refer to and make certain no vital reassembly steps are not missed. Use an excel spreadsheet. Excel is very easy to use and is a list makers dream come true; grocery list, project list, shopping list, Christmas gift list for Lee. You get the idea. Maybe you have excel at home on your PC or Laptop. Maybe Lee has it on a PC at work.
Have a day,
Alan from NC, USA
Take your time and get it right, read up the specks and make notes in your spar time and you will get there.
You are getting very valuable experience, especially in the order of doing things and not leaving anything out. When you are done with this motor you will be a Subie expert and you will be great at doing other engines unsupervised! Good on you Isaac!
Dont stress about it. You learn for next time, so take that positive away. Keep up the good work.
It's better to find these issues now rather than later.
Been in the Automotive trade for 60 year's and made sure i never got court working on a Subaru, ford man me BUT Im findings this story off your engine build very interesting as i have never seen one off those motors in half before. I will be following you all the way on your project great stuff Lad keep up the good work
Better now than later. Those close ring gaps most certainly would have knackered your fresh engine.
Thanks for taking us along this journey. I'm learning a lot, as well as you ;-)
Best of skills Issac. Cheers.
All this will make you a better engine builder. Good lessons learnt!
Great vlog. All about attention to detail, makes them run a bit longer. Well done. Stay well.
And what have we learned today? Tolerances for individual components are only part of the story. I used to make aircraft parts and while each part was made to tolerance, the complete assembly was never right first time. We always had to mix and match parts, or re-grind to bottom tolerance to get stuff to fit.
Hi Isaac Your doing really good with your engine, I am not going to drule on about what you should or should not do. I bet you can't wait until its all done, I know I cant wait he he, Anyway Isaac Merry Christmas to you miss Isaac and all your family.
Really good vid very informative
If the minimum suggested ring gap is 0.0022 then based on my experience with building and machining engines, I would give it a couple thousands more. Because you can never have enough gap when adding boost. I run 0.0030 on my top ring and 0.0028 on the second in my builds when the suggested gap was 0.0023 for both. And I have not welded a ring since. Even at 30psi in both my Chevy LS and my VW 2.0T in my Audi Quattro
It's an old saying but it's worked for me over the years, to assume is to make an ass of u and me!
Your building that a very hard way
Personally on those engine
Rods on to crank and torqued
Then Place the crank in the block halves
torque it and seal it before connecting any pistons as Iv had them with bad dowels nipping the crank
Then drop the pistons in and connect the rods through the holes
As thats the only way you can get a correct feel for the crank
Cam journals are always tight Iv spent hours playing with heads getting them freed of and you might then find when you torque the heads down the cams are tight again
For ANY engine rebuild, you should have a schedule of processes, what has to be achieved, and the results of the actual settings you used.
Nice one Isaac just control your excitement on the build slow and steady wins the day👍👍
Interestingly you now talk like Lee, in both imperial and metric measurements! But im amazed at your enthusiasm and knowledge already. Young people like you are few and far between, in fact non existent. You have a big future ahead of you and follow Ricky from Reperformance.
If you can't find conrod tunnel dimensions, you can always check the bearing crush
You should be looking at the factory spec for the ring gap? Subarus run tight due to the aluminium block and those aftermarket specs are wrong.
Someone who's never made a mistake has never done anything. Most people call their mistakes experience.
I had commented on the last video if the ring gap had been checked:)
Oops! now I'm doing it, end gap6, 5.5and15 for the oil
Please try not to wave the camera around as if you’re trying to swat a fly. It makes it very hard to watch.
....and you DO know that that nitrided crank can NOT be machined....ie, the journals cannot be machined if you have any issue with a bearing. that is why they didnt last long in use in the USA. its a one use item, really
💐Isaac💝💋 where does the N2O go? 🍦🎈🤞
I'm a top btw. Hope you like beards?
STOP !Go back and read the sheet properly, top ring is 5 thou gap , next ls 5.5 thou and oil ring 15 thou