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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Oliver 88 Diesel Tips

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oliverhick

01-08-2008 17:26:11




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I have a 1954 Oliver 88 with the 231 diesel. I am thinking of going to Hot Stock Class. I was wondering what I could do to give it more horsepower. Some guys tell me a different pump and bigger injectors. Is there anything else I could do. My rules limit me to 3,000 RPMs, and 640 cubic inches. Also need a kill switch any ideas for air kill switch.




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Old Ford Mechanic

01-08-2008 21:04:36




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-08-2008 17:26:11  
The best thing to do to win with the diesel is learn how to cheat.And learn how to do it good because thats what the rest of them do.You can't beat a 310 gasser with a 231 diesel without it.



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Tramway Guy

01-08-2008 19:38:29




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-08-2008 17:26:11  
I thought all Super 88"s used the 265 cubic inch engine! Maybe its not really a super 88, or has a regular 88 engine.



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oliverhick

01-09-2008 09:28:24




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 Re: Oliver 88 Diesel Tips in reply to Tramway Guy, 01-08-2008 19:38:29  
It is not a Super it is a regular 88. I crossed the serial numbers and the tractor is the regular Oliver 88 and to my knowlege those only came with the 231 diesel or the 231 gas.



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J Schwiebert

01-08-2008 18:11:07




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-08-2008 17:26:11  
The most interesting thing in your post: It is still a 231! I have not seen one of those in over 40 years! How much money are you thinking. I would at least go with a Super crank. What is more important to you horsepower or torque?



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oliverhick

01-09-2008 09:00:37




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 Re: Oliver 88 Diesel Tips in reply to J Schwiebert, 01-08-2008 18:11:07  
I would prefer more horsepower. And as far as money, as of now I am just looking at different things to do to see how much money i need. Thanks for the help.



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J Schwiebert

01-09-2008 16:26:05




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-09-2008 09:00:37  
That is like a political answer. You made a statement but really did not tell me anything. Is this engine aprt? Are you sure it is still a 231( I doubt it, but you never know) Who do you want to compete with? There was a young guy at our fair who pulls a Super 88 gas. I talked to him and I don't remember the exact dimension but it is over 400 cubic inch. Now going from 265 to 400 plus cost money. Also diesels have a hardened crank. If you are going to keep it a diesel it can be stroked but guys that can stroke and weld diesl cranks get paid well because of the involvement. The stock 88 crank with big cubes in a diesel will not hang together.

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oliverhick

01-09-2008 18:35:46




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 Re: Oliver 88 Diesel Tips in reply to J Schwiebert, 01-09-2008 16:26:05  
Will a roosamaster pump fit over. That's what some of the guys have been telling me. They also say to bore the injectors bigger. Will that help any?



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OUTRAGED

01-10-2008 18:31:32




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-09-2008 18:35:46  
stay in stock class



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tomupton

01-09-2008 19:36:31




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 Re: Oliver 88 Diesel Tips in reply to oliverhick, 01-09-2008 18:35:46  
If you want to run the roosa-master you will have to change the front timing gear cover to one from a later model 880 or 1600, 1650 maybe others? I think around 1960 and up used r.m. In my opinion bigger injectors aint gona do you any good without a lot of other mods. Why not just turn the fuel delv. screw up some, tighten down the spring on the govenor control and have some fun in the stock classes? In my opinion you will get lots of fuel with the bosch pump. It is air you will be lacking. Also you will have a hard job getting huge H.P. gains from that indirect injection head. The exhaust valves are recessed up in the precombustion chamber which "shrouds" the valve, and there is not a lot of matl. you can die grind out to increase flow. A bit more lift on the cam and a fair bit more duration on the exhaust help this but area around valve is still the limiting factor. Most guys will probably agree that your cheapest H.P. will be to switch to gas and do it up for the class you want to run. That being said maybe your not like most guys?

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