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Supercharging / turbo flathead 6? Opinions?


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Posted

A remote turbo can be an easy way to get 5 pounds boost. In these old cars you can probably mount the turbo charger under the floor where no one would easily notice it. An added bonus is the remote turbo can be sort of stealth as an old school sleeper. A remote turbo charger isn't for all out performance, but this off-beat idea has been gaining fans as a quick and cheap approach. Many people have hacked together the system in one day. You could mount the turbo charger about where a catalytic converter would be many newer cars so that the exhaust plumbing is pretty simple.

I think the Canadian 218 long block motor might be an interesting turbo motor because of the shorter stroke (that's still pretty long). Five or six pounds boost would wake up a flathead six, it might feel like a stock 318. The late model Toyota 2JZ inline six is only 3 liters but with turbos those can make over 1,000 HP. I would think 200 HP in brief WOT sprints might be dependable in these old flathead sixes. It would be really sweet if it looked like it always did with a remote turbo hidden away. All inline sixes have natural advantages in smoothness and low end torque. The rods of the Canadian 218 must be longer than the 236, that would add some dwell at TDC to control detonation (which really isn't an issue with only 5 or 6 pounds boost ).

Posted

Their are blown flatheads out there.

This one from Ozrodders. Roots style blower in the Chrysler, maybe Andy has some info on it.

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  • 4 years later...
Posted

Pictured below is a 283 CI flathead six as you described. I listened to this engine running on my last visit to the George Asche stable and it was very impressive. If I had the funding I would go this route.

Note the interesting thermostat by pass plumbing and the carburetor linkage. I do not know what carburetors are employed here.

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Any idea who owns this engine. Is this a 265 bored out with different rods to be 283? Another example of a hopped up flathead 6....What year and make of Mopar is this engine installed in?

Posted

Check out You Tube   Kevs turbo flathead 6. There are a couple cool videos there! 

Yup, seen this recently,very cool. Turbocharging may be a little more skilled then my skills possess, but do like the concept.

I was hoping the poster above who saw the engine run at George Asche's would elaborate more on that engine too.....

Posted

I met a guy here in Norway last summer with a -48 Dodge 3-window coupe. He told me he installed a turbo charger on his rebuilt 230 flathead 10 years ago. And it has been running smooth with no problem so far. The guy works for a turbo shop so turbo was the obvious choice for him. Ball bearing type turbo, pressurized carb and low boost pressure...

 

I´ve contacted my local turbo shop and they told me the Mitsubishi type turbo used in the Volvo T5 might be a good choice for the flat six. But good oils supply for the bearings in the turbo is off course critical.

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Posted (edited)

II met a guy here in Norway last summer with a -48 Dodge 3-window coupe. He told me he installed a turbo charger on his rebuilt 230 flathead 10 years ago. And it has been running smooth with no problem so far. The guy works for a turbo shop so turbo was the obvious choice for him. Ball bearing type turbo, pressurized carb and low boost pressure...

The oil supply line to to pressure gauge Teed off should be okay wouldn't it?

Edited by Fargos-Go-Far
Posted (edited)

The pictured intake appears to be a 2bbl. It appears he has a pressure hatenclosing the carb. My question is does the vacuum set up for the step up jet still work if the carb is under pressure?

Edited by greg g

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