202ci / 262 308ci differences and similarities

rmoore16

Just lookin for info/ input on waking up my little 202ci. I was wondering if 262/ 308 ci parts may fit? Or maybe some tip or tricks to tune it? Also any Ideas to help out in the trans shifting/ upgrade area.

Geoff

Sorry,  the only parts that are interchangeable between a 202 and the rest of the Step-down sixes are the valve lifters and retainers. The  only way to  "wake-up" a 202 is to fit the high compression head, twin carbs, and  maybe headers.    But this could be problematic if it is fitted in a Hash body.  I am not aware of any  non-standard camshafts for the 202 but a cam specialist may be able to assist you with re-profiling.

Geoff 

LHudson

There was a SU cam made for the 202. The part # was SU309777. I have not been able to find one or even the profile for said cam. There are many similar features between the 8 and the 202. I have not been into the internals of the engine yet but will soon. I read somewhere, the 202 was the 8 with two cylinders chopped off. How truthful the statement is I do not know. The stroke of the 202 is shorter than the 8, so they could turn more rpms. I feel the little engine potential.  Hope this helps.     LHud

Frankvintagefullflowcom

It's an old wives tale that the 202 has design similarities to the eight. Aside from using gas and oil, there is no connection except for pistons, and that's only true in the aftermarket units (there were minor differences in the OEM piston design but they are interchangeable). The 202 is a full pressure lubed "little brother" to the 232-262-308 family, not related to the eights. Although few parts are common to the two (as Geoff mentioned), the basic design is much the same.
If one was to cite similarities, use the "splasher" sixes.....at least they have the same number of cylinders.
The stroke of the 202 is actually longer than the eight, not shorter (4-3/4 versus 4-1/2)
If you get into both engines, you will quickly see that they are two very different animals. 
Frank

Geoff

It is most likely that the factory used the same boring machines that  had been used for the 8 cylinder motors, and the  spacing between cylinders is the same, but there the similarity ends, as Frank has said.  The 202 is a great little motor, but unfortunatley because of the small number made they are getting difficult to get parts for  now.

LHudson

Thanks Frank for correcting me on the stroke. For some reason I was thinking 3x5 for the 8. I think one reason most people think the 202 is like the 8 is the design of the exhaust manifold. I have not got to drive my Jet a lot yet but from my reading and talking to people the little engine is a very peppy little engine. Never underestimate a little flathead. I built a antique puller some years ago that had a 230 Mopar in it. I did not have a lot of expectations for the little motor. Was I ever suprised. I hope to get into the 202 sometime this year. A little breath of fresh air should wake up any flathead.         LHud

Frankvintagefullflowcom

L,
I can only guess that the rumor about 202/254 similarities arose from the fact that '52 was the final year for the 8 and '53 was the first year for the 202. It's quite believable that the cylinder boring tooling may have been incorporated into the 202 mfg. process but all of the block holding fixtures, etc., would have been different.
True, the 212 is the 5 inch stroke engine and actually puts out more power per cylinder than the eights by virtue of simply being greater displacement/cyl. They used smaller valves in the six as well, which doesn't make sense in light of the greater displacement. Who knows......
The Jet often gets a bad rap but I think they are gaining popularity as they shake the stigma of being an
undesirable car. That 202 is as good an engine as Hudson ever built and you will be pleased when it's running.
The appearance of the exhaust manifold misleads many but the ports are on the side, just like the big guys. Too bad Hudson didn't see fit to make it a 12 port block, but it's fine like it is.
Check for a PM (upper left corner of page, envelope)
F

Geoff

And the 202 puts out more horsepower than the 212, ( 3 more hp from 10 less cubic inches) and better torque, and in my experience performs better right through the whole speed range. 

rmoore16

My car runs and drives... I drive it quite often! Any tips, tune up specs, or anything else to help me make sure she's running at the top of her game. Also any help on my auto trans and getting it to shift consistently?

Geoff

I can write everything I know about automatic transmissions on the back of a postage stamp with a large felt pen!

lostmind

My car runs and drives... I drive it quite often! Any tips, tune up specs, or anything else to help me make sure she's running at the top of her game. Also any help on my auto trans and getting it to shift consistently?

The throttle rod is adjustment is very sensitive. Moving it a few threads at a time and retrying usually helps.

It's in the manual online.

LHudson

Acquired one of these setups last fall. In the back of my mind it would do wonders for the little 202. This should get a smile out of Rudy.    LHud

Lee ODell

LHud

That turbo will really wake up your 202. I had a 180 horse turbo Corvair engine in a VW Karmenghia. It ran great and got better gas mileage than previously installed carbureted Corvair engine. Then I set the engine aside for a lighter car project. Because I had not keep the turbo bearings oiled it was seized when I got around to using it again. The high heat from the exhaust driving the turbine cooks the turbo bearing oil when engine is shut off.

So if you don't plan to use turbo soon make sure you pressure oil the turbo bearing real good and check to see if the turbine wheel still turns since it has been setting for some time. You don't want the bearings to stay dry or they will seize up which leaves no smile on your face. It would be good to rig up a electric oiling system that will keep oiling the turbo bearings when engine is shut off until the turbo cools to a safe temp. .

Sometimes we learn lessons the had way. And the lessons are not free either.

Go for it. Even with the stock engine the performance increase will definitely put a smile on your face as your back presses against the seat.

Lee O'Dell