Genset Engines

1940 - 1941 BRC, MA, GP, Preproduction Prototypes. Knowledge Base NO EBAY or COMMERCIAL SALES.

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Adam
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Genset Engines

Post by Adam » Wed Aug 04, 2021 8:04 am

Just picked up another PE95A. Has the ford engine, GP head, blocked off fuel pump hole. I have 5 engines here now, 1 has a GP serial number, another has gp cast into the block, not sure of its number. 2,PE 95A engines, and a 8N-C engine. Gonna compare all 5 of these to see how much of an issue it is to put a 8n engine in a gp and see what all parts will be needed.

I have a correct intake, trying to get my air filter back to see if the angle dist, will work with that, I have a clutch, bellhousing, oil pan, the 8nc engine has a really big oil pan that nay not fit in the gp. A correct dist and front end pieces, needs the slotted piece replaced on the dist drive, I think i did see somebody making the parts for that. Still need the air filter mount plate, will probably make one. All engines have what looks to be virgin flywheels, I have a new 9n starter and maybe an original that needs a bendix at least.

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gpwmke
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Re: Genset Engines

Post by gpwmke » Sat Aug 28, 2021 8:40 pm

You really need the GP oil pan. It is designed to accommodate the front drive shaft. All other oil pans will not allow the front drive shaft to be hooked up to the differential. A serious interference fit. Best wishes;

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Re: Genset Engines

Post by Adam » Thu Sep 02, 2021 6:00 pm

I have 2 GP oil pans, they are the same as the pan on the 95A engine, with the exception of the gp pan having the reinforcement welded on the bottom. Only place the shaft could possibly hit is at the very back and top of the oil pan. really the back end of the oil pan is just a welded on piece that encloses the flywheel, there is a second oil containment part inside. No reason you could not reconfigure the back of a pan that will not fit. In the pics the rusty pan is from the pe unit, the black oily pan from a GP.
Not that original parts are not the bust, but if you dont have a gp engine, you can make a clone.

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Adam
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Re: Genset Engines

Post by Adam » Thu Sep 02, 2021 6:03 pm

skid plate vs no plate.
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Adam
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Re: Genset Engines

Post by Adam » Thu Sep 02, 2021 6:09 pm

Heres the back of the oil pan from the 8nc, with a gp bell housing installed, Here you can see the back of the oil pan will be in the way, also the 8nc pan has the bolt hole in the wrong place. looking from the bellhousing to the oil pan. The oil pan on this engine is cast iron, I would not hesitate to cut the back piece out and weld in a piece on the pan that would work if I really needed to use this engine. Will pull that pan later and see if the gp pan will fit on that engine.

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Re: Genset Engines

Post by Adam » Fri Sep 10, 2021 8:41 am

Inside of oil pan,, back is just support bracketry, if you had to, a grinder can make an oil pan work.
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Re: Genset Engines

Post by Adam » Sat Sep 11, 2021 8:24 pm

Fit the bellhousing on the 3 engines, locates on the dowel pins, top is gp cast on inside of block engine, second is the pe95a engine, and 3rd in the 8nc.
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Re: Genset Engines

Post by Adam » Sat Sep 11, 2021 8:32 pm

Pilot bearing fits in all 3 flywheels, the genset and 8nc motor from a generator used what look to be standard clutch flywheels. Old pressure plate and replacement plate fit both of these engines, Flywheel face to back face of block (bell housing mount flange) all within 1/8", gp engine measures 1/4". all 3 flywheels have the small recessed area inside the disc contact area, visible in the pic with the bearing.
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Re: Genset Engines

Post by Adam » Sat Sep 11, 2021 8:37 pm

3 starters, left is a new 9n starter, middle came off the gp engine, right one has a stuck bendix, looks like it came apart during removal in its past life. To remove the starter from the gp engine, u need to unthread the 2 main bolts that hold the starter together, lean over the fender, pull the starter to the drivers side so the bendix clears the ring gear, then pull the starter out without having it all apart in your hands. If it comes apart too much the brushes will fall off the commutator. Picture shows the starter hole, with a widened side of the round hole to allow starter bendix room to move away from gear., although picture is not clocked correctly
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Re: Genset Engines

Post by Adam » Sun Sep 12, 2021 5:38 pm

Drivers side of engine, dead give away here, both gp engines have only 3 freeze plugs, pe engine has 4 and 8nc has 4. 8nc engine does not have a GP head on it, you can see the difference as the other 3 engines have a gp head on them. Pe engine has same oil fill cap if you get rid of the chain, the fill tube may be able to be shortened and clocked a little different to make that work. that oil tube is straight on the gp serialed engine.Will need to research to see which is correct. you can also see the monster oil pan on the 8nc engine.

pic #1 GP serialed engine. #2 8nc #3 pe engine and #4 gp cast on inside engine.
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Re: Genset Engines

Post by Adam » Mon Sep 13, 2021 7:00 pm

Passenger side of engine is a little easier, all 3 engines have the same intake/exhaust port configuration and bolt patters, Original sown draft manifold fits on all 3 engines. All have a machined fuel pump mounting hole and all 3 cams have a lobe in this area.
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Re: Genset Engines

Post by Adam » Mon Sep 13, 2021 7:05 pm

3 fuel pumps, 1 from the 8n, and one from the gp embossed engine, look to have the same pump plunger as a new unit made by JMP. Only the JMP pump has the petcock drain on it, the other 2 carbs fed updraft carbs.
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Re: Genset Engines

Post by Adam » Mon Sep 13, 2021 7:17 pm

On the intake and exhaust manifold assy,, 900 bucks for one of the repos, Now, while saving up your pennies, how about cutting the flange and part of intake tube off from the updraft unit, plugging the hole under there, drilling the top of the manifold and tig welding the flange onto the top. Might need a weld shop dealing with cast, or pull out your McBubba welding hat and giterdone. Only the manifold from the pe unit has enough room and a flat to do this. The manifold passage is only 1/16 smaller, yet the runner is bigger so maybe wear out a few brake cyl hones and open it up a hare. If you arent racing down the highway,, who will know, after all the engine will be a clone, why not the manifold.

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Re: Genset Engines

Post by Adam » Tue Sep 14, 2021 5:32 pm

Front of the engines, new game up in the front. order of engines is GP, 8n and pe engine.
the gp Has the correct distributor extension housing, 8n is molded in and the pe is using a off vertical mounting. All 3 will work fine on an engine, unless you want the engine to look correct, then you will need the gp front end parts. I dont think anything from the 40's used these gp mounts. Will have to research that.

Adam
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Re: Genset Engines

Post by Adam » Tue Sep 14, 2021 5:39 pm

passenger side motor mounts on the pe engine and gp engine are at different locations, order of engines is 8n, pe and gp, the gp mount looks ovaled out, the wrong bolts and messed up rubber parts did not help. the 8n and pe engines have a front cover casting in the way to make using the original frame mount a drop in process, you could alter the frame mount with a flat plate to make that work, and as far as the 8n goes, i would make a full size cradle that would bolt to the oil pan and fit to both frame mounts, As far as the drivers side goes on the pe engine, it is cast iron and part of the front cover, I would cut the mount arm near the engine where it starts to bent toward the front and make a mount out of plate steel to resemble the gp arm, make it so the remains of the pe arm would slip inside a weldment and connect to original frame mount.
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