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Allis chalmers b tvo

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=137356
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Topic: Allis chalmers b tvo

Posted By: Owen_brassfield
Subject: Allis chalmers b tvo
Date Posted: 13 Apr 2017 at 10:58am

What is the best mixing ratio for tvo for an allis b

Replies:

Posted By: Dean(IA)
Date Posted: 13 Apr 2017 at 11:11am

I would think that diesel fuel would be reasonably close to TVO. Kerosene might
also be pretty close. Diesel fuel is more "oily" than kerosene.
For us on this side of the pond, it means Tractor Vaporizing Oil.
Back in the early tractor days we had a fuel that we called power fuel
or distillate. It was probably the same as tvo.
I hope that i haven't just confused the issue some more.
Dean

Posted By: AJ
Date Posted: 13 Apr 2017 at 11:39am

I've heard it called "tractor fuel" as well.

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Can't fix stupid

Posted By: Owen_brassfield
Date Posted: 13 Apr 2017 at 11:49am

Their all just different names for tvo however I want know how to mix your own tvo

Posted By: Dean(IA)
Date Posted: 13 Apr 2017 at 12:07pm

This is taken from Vintage Tractor Engineer:
1 part petrol (gasoline) and 1 part heating oil (furnace oil) results in 59 octane
2 parts petrol and 1 part heating oil results in 72 octane.
He recommends the lower octane for topping and light work
and the higher octane for heavy field work.

Posted By: everett048
Date Posted: 13 Apr 2017 at 2:48pm

You dont need to mix T V O just use central heating oil in it thats all we use in our 20 Allis tractors as long as you keep it hot you will be fine

Posted By: CrestonM
Date Posted: 13 Apr 2017 at 4:50pm

I must be missing something....what are all these different fuels? I'm used to just starting and running on gasoline, so all this is new to me. I've heard of "distillate" and "tractor fuel", but how is it different from gasoline?

Thanks

Posted By: steve(ill)
Date Posted: 13 Apr 2017 at 5:05pm

Creston - its a 1920- 1940 era thing... gasoline was not readily available and $$$. They were looking for CHEAP.. That's why most of the motors from that era have 5 :1 or 6:1 type compression ratios.

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Like them all, but love the "B"s.

Posted By: Gerald J.
Date Posted: 13 Apr 2017 at 5:11pm

Distillate was a left over component of petroleum refining in the 1930s. A little lower octane than gasoline with poorer vaporization. Being a left over it was cheaper than gasoline. Takes heat to get it to vaporize hence the heated intake manifolds and the dual fuel systems on tractors made to use it, always had to be started and warmed up on gasoline before switching to distillate. It may have had more btus per gallon to give a bit more engine power despite the lower compression ratio required for the lower octane. Most likely the main benefit was being cheaper than gasoline.

Somewhere I have a 30's vintage book on engine design. It probably comments on fuels like distillate, but I don't know where that book is right now.

Gerald J.

Posted By: Hyperpack
Date Posted: 13 Apr 2017 at 5:41pm

There is an old discussion on the YT site titled What exactly is distillate.

Posted By: Bill Long
Date Posted: 13 Apr 2017 at 6:12pm

Gentlemen, I am in WAY OVER MY HEAD. I had no idea what TVO meant. When we sold them 30's to 62 we always used gasoline till the diesel's came along. However, the gasoline right after WWII was pitiful. Once I could not ignite it with a match.

Thank you so much for explaining in such detail.

Take good care of my favorite.

Good Luck!

Bill Long