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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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6 cyl. engines

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Norman Blackmer

09-17-2005 08:05:14




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Hi- I know this will sound stupid but I live in the city and don't have room for a tractor. I am into old cars (Hudsons)and thinking of building a different street rod. I hope a Oliver man can help me. Would it be possible to install a Oliver 6 cyl. eng. in a street rod chassis? Do these engines have a seperate oil pan (like a car) or is it part of the tractor frame? I realise an automotive clutch and trans. would have to be adapted and fuel and exhaust changes needed. Is this a compleatly unrealistic idea? Thanks for your thouhts Norm

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D13

09-18-2005 04:59:43




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 What a horrible thought! in reply to Norman Blackmer, 09-17-2005 08:05:14  
Lets see. The BIG Oliver was 310CID, made roughly 110 HP stock with turbo, 90 or so without, can probably be twisted to no more than 2000 RPM without major work. It is designed for torque and fuel efficiency under constant load, and will not like to accelerate rapidly. A good rebuild costs $1500-3500 depending on why. To make it auto compatible (removal of govenrer linkage, full balance of lower, different cam, etc.) will definitely be on the upper end. It doesn't bolt to any readily available trans or adapters. It mounts by vertical pads on the corners, making it quite wide. It is significantly taller than a comparable auto 6, particularly in turbo form. It uses updraft carburetion and upward exhaust, meaning unique manifolds are in order. A really different oil pan and pickup system will be required. You'll need to run a late model one as the 4 bearing version wouldn't be happy with the variable loads. Since the engine isn't reall designed for smooth running you'll find it vibrates considerably more than an auto engine.

Can it be done? Yes. But why? It would be OK in a BIG truck with lots of gearing, but would stink in a car. Plus there will be a lot of custom parts and clearance issues.

A better idea would be a Chevy 250/292 or Ford 300 six. At least the trans,motor mounts and rebuild parts would be available, and the package would fit better. Or how about a Buick V6, or even the GMC 305 V6?

We put auto enignes in our tractors to make them perform, and because they are cheaper than tractor engines (Chevy and Chrysler 6's came factory in combines), and going the other way is a giant step backwards.

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Mike (WA)

09-18-2005 08:58:49




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 Re: What a horrible thought! in reply to D13, 09-18-2005 04:59:43  
I gotta go with D13 on this- while it would certainly be unusual, unusual is not always good. Not even much "bench racing" appeal there- "Hi- what're you running?" "Oliver tractor engine". "Uh- interesting." Since you mentioned you're a Hudson fan, why not a full dress 308 for your streetrod? Best inline 6 ever, parts readily available, and pretty impressive if you polish up an aluminum head, get Clifford headers, Twin-H dual carbs, etc. And performance that would make your Oliver engine blush.

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old

09-17-2005 08:25:53




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 Re: 6 cyl. engines in reply to Norman Blackmer, 09-17-2005 08:05:14  
Sure you could but you need to remember a tractor only spins around 1500rpm and a car engine is more like 3500rpm so you would have a slow car with out a lot of extra gearing done



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gfs

09-17-2005 15:49:51




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 Re: 6 cyl. engines in reply to old, 09-17-2005 08:25:53  
Depends how much work is done to the motor. I had a 88 puller that would crank way up there, took some extensive planning and prep to make it go reliably.



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weaver

09-19-2005 09:00:02




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 Re: 6 cyl. engines in reply to gfs, 09-17-2005 15:49:51  
Did you change the oiling system for the rods? The orginal system was not good under load much above stock rpms. That is why oliver changed to a forced oil system to the rods for the newer tractors so they could run higher rpms. Most pullers crank up the rpms but don't run it all day under load. If you ran all day with the old oil system above rated rpms then you would destroy the rod bearings. If you have interest, Oliver has all this documented with their testing which shows power levels and rpms.

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Norman Blackmer

09-17-2005 17:38:29




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 Re: 6 cyl. engines in reply to gfs, 09-17-2005 15:49:51  
gfs--In a street rod these engines would be under very light loading compared to tractor use. I figure to do away with the govener, adding more carburation and maybe different camshaft. What is the bore and stroke of these engs.? What would limit the top RPM ? Just an idea to have something different. Thanks. Norm



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Norman Blackmer

09-19-2005 11:02:29




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 Re: 6 cyl. engines in reply to Norman Blackmer, 09-17-2005 17:38:29  
Thanks for all the info. Bad idea,I guess. I will stick with my Hudson 308. Norm



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