Author Topic: The twin build  (Read 20016 times)

broncodriver99

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Re: The twin build
« Reply #75 on: January 15, 2018, 08:44:36 PM »
It's in the WOK at the top of the the forum home page.

http://listerengine.com/smf/index.php?topic=7374.0

2Ton46

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Re: The twin build
« Reply #76 on: January 16, 2018, 02:15:02 PM »
Looking good!  I'm impressed with the balance, better than mine is it looks like.  Also like the oiling modification. Can't wait to see the cooling system!

highroad281

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Re: The twin build
« Reply #77 on: January 17, 2018, 01:13:52 AM »
Another awesome thread 38ac, really appreciate you taking the time.

I have a couple questions related to the twin governor linkage and balancing fuel delivery between the cylinders.

On my twin the entire governor assembly appears to be a mess - binding everywhere.   The long linkage rod is nicely bowed and rubs the block in two locations and manages to hit the oil line too.  I'm pretty confident that gentle persuasion is what is needed to align the parts all on the same plane but wanted to ask if you have any tips and tricks or gotchas to look out for in regards to these adjustments?  Your video about making the single linkage as rigid as possible was very helpful for the 6/1, and I'm sure it is just as important here but any other twin specific insight would be great too.

For balancing fuel delivery I have seen other threads using an IR thermo to check exhaust temps and make sure they are ballpark same, are there any better ways to check or is this still the preferred means?  How would they manage to get them properly sharing load across both cyls back in the day?

Many thanks

38ac

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Re: The twin build
« Reply #78 on: January 17, 2018, 12:15:15 PM »
 :)
« Last Edit: August 29, 2019, 07:31:58 PM by 38ac »
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highroad281

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Re: The twin build
« Reply #79 on: January 17, 2018, 09:13:26 PM »
Great explanation, thanks for walking us through the process.   

When trying to bend the cast linkage components to adjust crossover rod alignment do you find heat to be helpful, or are the parts soft enough to simply work over in a vise?

And one further question - I'm sure this has been covered before but the threads on the intake and exhaust manifolds...  are they BSP?  And if yes is it close enough to NPT that it will work,  or should they be re-tapped to NPT for convenience?

Hugh Conway

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Re: The twin build
« Reply #80 on: January 17, 2018, 09:45:41 PM »
@highroad
Yes the threads are BSP and NPT fittings thread in without problem to the intake/exhaust adapters.
cheers,
Hugh
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highroad281

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Re: The twin build
« Reply #81 on: January 17, 2018, 10:27:39 PM »
Ok perfect,  that gives plenty of options for routing.  Thanks Hugh!

I'm anxious to see the cooling setup as well, but do you all think we can talk 38ac into some intake boost too?  I'm sure with this crew somebody has a small turbo kicking around the shop we could collectively donate to the cause ;)

38ac

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Re: The twin build
« Reply #82 on: January 18, 2018, 11:57:49 AM »
 :)
« Last Edit: August 29, 2019, 07:32:15 PM by 38ac »
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38ac

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Re: The twin build
« Reply #83 on: January 21, 2018, 02:44:35 AM »
 :)
« Last Edit: August 29, 2019, 07:32:33 PM by 38ac »
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32 coupe

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Re: The twin build
« Reply #84 on: January 21, 2018, 02:51:54 AM »

Looks great !

What water pump are  you using ?

What rpm's is it running in the video ?



Gary


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38ac

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Re: The twin build
« Reply #85 on: January 21, 2018, 03:24:22 AM »
The water pump is a bronze 2 gear pump. It is running a tick under 750 RPM in the video, a speed it likes vibration wise.
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dieselgman

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Re: The twin build
« Reply #86 on: January 21, 2018, 05:35:41 AM »
Cool application of relatively passive technology Butch! I bet that requires a fair amount of make-up water! How many BTUs do you think she'll dump with that setup?

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38ac

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Re: The twin build
« Reply #87 on: January 21, 2018, 06:38:48 PM »
 :)
« Last Edit: August 29, 2019, 07:32:52 PM by 38ac »
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ajaffa1

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Re: The twin build
« Reply #88 on: January 21, 2018, 08:28:23 PM »
Hi 38ac, thanks for all the technical info, what a beautiful job. I`m looking forward to getting back to my build as soon as I get the go ahead from my doctor.
I saw a screen cooler like that at a local show, the owner had rigged some blue LED lights inside so the whole thing glowed with a blue haze, very cool at night.

Bob

Willw

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Re: The twin build
« Reply #89 on: January 21, 2018, 11:48:15 PM »
Congratulations on another excellent build sir, the way you have it balanced one would not guess that these engines are known for rough running.

I was set on ultimately buying an 18/1 at some point, but after seeing this I guess I might have to side with Glort, buy a 16/2 instead, and blame it on you "It's all your fault".  :laugh:
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Too many projects.