1972 Triumph GT6 - Part 86 - CAMSHAFT timing

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The repair manual tells you to put the marks on the timing gears in certain way in order to time the camsahft without explaining why and what happens when you put them this way. In this video I tried to do something similar for those who are not interested in learning WHY things need to be done in certain way and are happy to know just WHAT they need to do in order to time their camshaft. Well, I tried... I still got carried on at some point and.... you know, I didn't save some details that I could. But anyway, I believe that most of the people who actually watch my timing videos are also interested in the details. So here we go again...
Skip to:
00:00 Intro
01:34 Installing The Timing Gears
14:50 Timing The Camshaft
43:47 Blah-Blah :)
Link to my overdetailed camshaft timing video • Degreeing The Camshaft...
It is about a TR4 camshaft but it is virtually the same procedure for most of the British Sports cars from that era.
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25 июл 2024

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Комментарии : 28

@dude36 Год назад

Ah that was great! Thanks for going back thru it a few more times….pun unintended!,

@timmarsh6754 Год назад

The ‘rounded off’ part on the crankshaft nose is called a ‘fillet radius’. It is well known amongst Engineers that sharp edges and corners are stress raisers and can cause cracks, leading to premature failure of parts. Read about the De Havilland Comet aircraft failure in the 50s/60s, where they had rectangular windows. That’s why you will never see a sharp corner, but a small radius to relieve the stress. Great job so far, BTW.

@kevinhayden341 Год назад

Hi Elin wish I had a teacher like you at school I have a MK3 spitfire owned 25 years now with a GT6 engine in it. Kev 👍🇬🇧

@pda49184 Год назад

Excellent video Elin.. I have timed in dozens of engines back in my day and never really had the time to work out the finer points .. Watching you do it with such clarity and added editing to show precisely where things are at , guides the viewer through the smoke and mirrors, (or as my old boss used to say "The Black Arts"). It's all very nostalgic for me watching your Rusty Beauties series and takes me back to much harder and more demanding times but with better music, beer and a lot of fun.

@philipavery8465 Год назад

Wonderful Elin. I have today ordered a duplex kit, I have been considering this for along time but not sure if its possible. Once again your videos not only answer the question but shows how to. Thank you

@johngidman4574 Год назад

Great work. Looking forward to seeing this car running.

@graemelliott3942 Год назад

I watched till the end!

@kjeldlarsen912 Год назад

That was a great video thank you Elin

@andrepienaar6459 Год назад

Thank you Elin! The 2nd time round it makes more sense!

@Andy-vo6zk Год назад

Hey Elin I think I finally understand timing without having to take my shoes and socks off! Another "Triumph" of explanation and in UK terms . Keep at it its a pleasure to look forward to the next episode.

@alexanderduncan4302 Год назад

The fillet on the crankshaft prevents it from snapping off ! Regards, Sandy🔧🏴󠁧󠁢󠁳󠁣󠁴󠁿

@davidberlanny3308 Год назад

Sorry Elin, I forgot to shout when I saw you didnt put the lock tabs on ....... I was out in the backyard playing ball with Rusty😁😁😁. Great video, really good editting to show animated the timing wheel !! Good luck from Spain!!

@iceman9678 Год назад

It takes some good looking studs to keep an engine together. Engine jokes are all about timing.

@jimconklin8040 Год назад

Nice job Elin, I will refer to this video when I do my TR6. I believe Rusty did not join you because all of the timing numbers confuse him.

@omphaloskeptic4989 Год назад

Elin, thanks for your effort to show the degree wheel positions in the video frame insets; greatly adds clarity to the description! The entire degree wheel process must be done stepwise to insure accurate results; even turning the crank anti-clockwise past the desired stopping point and then clockwise to eliminate the 'backlash' slop/error. Thanks for describing each step of the procedure and the 'why' the next step is taken! "It is always better to be advanced than retarded." Now I know why my mind is going; my 'chain' has stretched over my lifetime! lol

@brianmoore1488 4 месяца назад

You mentioned the rounded edge, and not a square edge, on the crank shaft, and not knowing why (requiring the chamfer on the sprocket). A square edge will result in a shaft stress concentration when subjected to torsional loading, which is caused by the abrupt change in geometry (i.e., a sharp corner). The stress concentration can be reduced with a properly sized filet. Therefore, as you noted, the sprocket then requires a chamfer to clear the filet to allow it to seat properly. Without the filet, it would become a likely location for shaft failure to occur.

@BruceBoschek Год назад

If Rusty had been there he would have reminded you to put on and bend the tabs, but all that math and geometry isn't really suitably for us dogs. Greetings from Halgrim.

@williampeacock8684 Год назад

Sorry to change the subject but I noticed you installed an electronic ignition system the other day. I have a TR3A (1960) with a TR4 engine with 87mm bore. I noticed that Rimmer Bros offer different ignitions sets for different bore sizes 83mm/86mm. Is there any different requirements for my 87mm bore? And by the way what an excellent video on timing. Well done,

@philtucker1224 Год назад

Elin I don’t understand why the small Duplex sprocket isn’t allowed to float along the nose of the crank, as that would allow it to always self-centre with the revolving thrust of the chain. (It would also automatically compensate for crank end float). I expect you know why?

@JohnCarey1963Jag Год назад

do you think the double roller gear set vs. the single is different in it's ability to be perfectly calibrated to 110 degrees BTDC?

@RustyBeauties Год назад

Definitely the double gear on TR6 and GT6 engines limits you to half tooth increments only. The double row gear on TR2,3,4 though is still reversible so there you can do a quarter tooth adjustment, assuming it was made correctly as it turns out some of the the reproduction gears are a little off and the quarter tooth adjustment is not really possible. I might make a separate video about that. Oh, btw it is 110 ATDC not BTDC. I made that mistake once :)

@bannik100 Год назад

Hi. Thank you for the explanation. I have ome question. I must timing my spitfire. I changed the camshaft for a fast road. Does your 110° is the inlet timing (mine is 103°)? The 50 (thou? =thousandths?) is a random number or corespond to something? Thankyou.

@RustyBeauties Год назад

Hi, the procedure for 103 is exactly the same. Just when you add your numbers and divide by 2 you need to get to 103 instead 110. That is all. 50 thou stands for thousands, yes, 50 thousands of an inch or 0.050”. You can do it with another number, as long as it is the same for the clockwise and counterclockwise drop, but 50 is recommended because of the shape of the cam. Many specs even give you a crankshaft position for 50 thou drop. I recommend 50 for your camshaft as well. Good luck!

@shaneblacklord3313 Год назад

Hello Elin Could you put a link to a pdf of your degree wheel so I could download it?

@RustyBeauties Год назад

I am planning to make it available for download on www.rustybeauties.com but I can’t find time to do it so it is not online yet. You can send me an email at elin.yakov@rustybeauties.com and I will reply with the PDF attached

@RustyBeauties Год назад

I uploaded it in the files section of our Facebook group Rusty Beauties facebook.com/groups/3028660134022715/files/files If you don't do Facebook, just email me and I will send it to you