1977 Triumph Spitfire 1500 Tuneup - Valve Lash and Dynamic Timing

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The car being tuned is a US Federal car that has been modified through the addition of Dual Su HS4 carbs, Flat Top Pistons and a shaved head (CR ~ 9.5). The car runs on 93 Octane (US).
This video shows:
Specifications and and a diagnosis chart
Tools used
Vacuum testing and diagnosis
Valve Lash Setting
Spark Plug Indexing
Dynamic Timing
Final Verification of Improvement
The video is shot using Samsung S7 phone and Sony Handycam DCR-SX41.
The video is processed using Shotcut software on a 2012 Dell Inspirion that has been converted to a Ubuntu (Jammy Jellyfish) operating system.

Опубликовано:

16 окт 2024

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Комментарии : 10

@jackchandler5315 Год назад

Really nice. I'm likin’ what you've done in your engine bay. This is a good and informative video, El Profesor. Where were you when I had my MGB?

@MikeHammill-TheShop Год назад

Probably in somewhere between middle and high school. 😀

@MikeHammill-TheShop Год назад

Thanks Jack!

@billymechanic 2 месяца назад

never use gasket seal only use high melting point grease this stops people over using gasket seal "dangerous to oil galleys" an also helps so you don't get gaskets sticking to the surface! otherwise cool video also 93 octane fuel you want slightly less than 18 btc, 15btc would be better as UK btc is worked out on a 100 octane rating

@MikeHammill-TheShop 2 месяца назад

Thanks for the advice on high temp grease. That makes sense. Also, I appreciate the 15 BTDC advice.

@billymechanic 2 месяца назад

@@MikeHammill-TheShop i would personal with a higher compression run high octane fuel anyway :) also they will use less fuel for better MPG

@MikeHammill-TheShop 2 месяца назад

@billymechanic unfortunately 100 octane is not readily available in the states. So the best solution is to reduce the advance a bit. There is one gas station about 15 miles from me that sells leaded gas and racing gas. Fortunately, the 77 spitfire doesn't need leaded gas. I'll have to try the high octane sometime. Again, thanks for your input.

@billymechanic 2 месяца назад

@@MikeHammill-TheShop so unless you've changed the valve seats you should be using an additive or 2 stroke oil at least which does increase octane anyway 👍 i.e higher the octane slower the burn of the fuel!

@billymechanic 2 месяца назад

sorry miss read that your spit doesn't need leaded gas. should be ok with slight change on timing :)