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Bombardier J5 1959

J5 Bombardier

Well-known member
Finished the pump mount today, used the two 7/16 alt bracket holes on the left side for the mount and the block off bolts for old fuel mechanical pump on the rht side. The last mounting point on the right side is to the frt motor mount. Next step is to reverse the pump rotation and bolt it up.
J5 Bombardier:hammer:
 

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mog5858

New member
nice keep up the good work. my red ram it driven off the fount like that's the only good way to drive most hyd pumps.
 

J5 Bombardier

Well-known member
Hydraulic pump got put back together and installed this afternoon. Suction line is on , need to dig up an ORB to #12 Jic fitting for the pressure line which could be fun as my parts supply is organized chaos !
J5 Bombardier: hammer:
 

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J5 Bombardier

Well-known member
Finished the pump install, closed in the hull, got nice speed on the winch cable, will see how strong it is soon enough. Lots of snow predicted, so it seems we'll have to pick up the pace to get the other two machines ready, always seems last minute. But it's all fun, just got to keep an eye on those falling trees !
J5 Bombardier:hammer:
 

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J5 Bombardier

Well-known member
Well I got a good 7 years out of the old flathead , with nothing more than a oil pump swap and a head gskt , but the end is near. I parked it due to low oil pressure and a knock even I can hear . Stripped one of my last 251 cores, that was never rebuilt, out of a military ambulance , hoping to get away with rings and bearings. Came close but ring marks are to deep for honing, and I'm not spending major coin on an engine designed in the 30's. So now the plan is a ford 300 , which would be a tight squeeze, or go 2.2 chev 4 cyl with computer as seen in a previous thread.
That would be a summer job after the muskeg is done, my neighbor has offered a J 5 he doesn't use, may need a few things fixed, we'll see.
J5 Bombardier:hammer:
 

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J5 Bombardier

Well-known member
Well I got a good 7 years out of the old flathead , with nothing more than a oil pump swap and a head gskt , but the end is near. I parked it due to low oil pressure and a knock even I can hear . Stripped one of my last 251 cores, that was never rebuilt, out of a military ambulance , hoping to get away with rings and bearings. Came close but ring marks are to deep for honing, and I'm not spending major coin on an engine designed in the 30's. So now the plan is a ford 300 , which would be a tight squeeze, or go 2.2 chev 4 cyl with computer as seen in a previous thread.
That would be a summer job after the muskeg is done, my neighbor has offered a J 5 he doesn't use, may need a few things fixed, we'll see.
J5 Bombardier:hammer:
Finally got started on swapping the J5 motor, we made a few trips hauling last winter, it refused to die, but it's time has come. The candidate 265 is now on the engine stand, needs a bit of tidying up and swap the accessories.
J5 Bombardier
 

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J5 Bombardier

Well-known member
Motor is waiting for gaskets, and sometimes you shouldn't dig to deep, you might not like what the previous guy did. Bores are 20 and crank the same, not many miles. I wasn't impressed when I noticed number 1 piston not pointing forward like the rest, pulled it and fixed that , replaced all the connecting rod nuts, and torqued the bottom end . As I sit here ,I'm now debating on pulling the other 5 to check the rings.....ffs, better now than when it's in place.
J5 Bombardier
 

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J5 Bombardier

Well-known member
Just waiting on a pan gskt , pistons were pulled and the block a quick hone . Still have to rig the remote oil filter to the full flow ports as opposed to running the filter as a by pass , I didn't know Chrysler had that on their later production blocks , Industrial only ? . The 251 pulled from this J5 also was full flow, these are the only two out of all the flatheads I've worked on , that I've seen. Definitely would lengthen your engine life, although both of these motors were jumped at the ports with no filters , by previous owners. Yes , "Quebec Chrome" on the manifold, it won't be as flashy once it warms up !
J5 Bombardier
 

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Snowy Rivers

Well-known member
Looks great.

Indeed.....sometimes though it pays to check out what sort of "Tracks " were left by the previous crew......Great time to fix it right as opposed to having to dig back in there later for sure..

Some times ya just gotta ask "What were they thinking" ???????????

But now you know what you have....
 

J5 Bombardier

Well-known member
Finished the engine install in the J5, all greased , and a few crosser bolts replaced in the tracks. Left to do , build/ buy a hitch to haul a Bombardier trailer the correct way , with the weight distributed on the suspension .
Next up , a Perkins powered SW48 that's been waiting for ten years in the barn.
J5 Bombardier
 

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J5 Bombardier

Well-known member
Guess the sidewalk will have to wait as our first J5 has excessive blow by , its 16 years since the motor was installed and other than a head gskt has been trouble free. The 251 is a military rebuild from 1971, compression was low on all 6cyls , so we pulled it today and pressure washed everything, tomorrow we'll open it up and have a peak.
J5 Bombardier
 

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J5 Bombardier

Well-known member
Anybody have some contacts , I'm having trouble finding piston rings .060 ( undersized), for this 251 chrysler 4.1L L 6 motor. 4 rings per piston 2 top are 3/32 , 2 bottom 5/32. When searching by vehicle I go with a 1948 chrysler Windsor car, 251 engine. Thanks J5 Bombardier
 

J5 Bombardier

Well-known member
Anybody have some contacts , I'm having trouble finding piston rings .060 ( undersized), for this 251 chrysler 4.1L L 6 motor. 4 rings per piston 2 top are 3/32 , 2 bottom 5/32. When searching by vehicle I go with a 1948 chrysler Windsor car, 251 engine. Thanks J5 Bombardier
Parts ordered , rings coming all the way from Cali, an expensive freshen up job . Rebuilding one of these old relics would not be worth it, cost wise.
Started tearing down my SW48 Diesel, going to empty the tub , descale and paint at least . Everything goes back in and suspension installed, cab bodywork we'll see. It deserves it's own thread, but be warned, restoration work will not match Bobcatbob's pristine resto of his SW48 a couple years ago ! Talk about a tough act to follow ......... :hammer:
J5 Bombardier
 

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Bobcatbob

Active member
GOLD Site Supporter
Thanks J5…..but I’ve seen your work, it’s top notch! Looking forward to seeing that Perkins rebuilt. That will be cool to see!
 

J5 Bombardier

Well-known member
When I bought that unit , the diff was removed ( with a bad gear set), which sold separately 3 hours later at the Auction :confused: , Ya I got it ! . "Don't Run" was written on the windshield, which turned out to be a bad ground at the back of the head. So I had it running, trans shifted through the gears, then put it in the shed for at least 8 years. Kind of hoping to change fluids and filters on the motor /trans , with a spit shine , but we'll see how things progress.
J5 Bombardier:hammer:
 

Muskeg35

New member
What size of hydraulic pump did you install in the j-5, GPM , size of input shaft, gear pump? Where did you get the couplings to couple to the crankshaft?
 

J5 Bombardier

Well-known member
Pump size probably 10-12 gpm , couplings / spider drives are available at any bearing store . The mount and drive is something you'll have to fab up .
 

NH J5 Owner

New member
Hi, new j5 owner here. Looks like a full-flow oil filter on the flathead? Mine has no oil filter. Not surprising, given the partial-flow oil filter was an optional accessory. That said, I would like to add one. Can you point me in the right direction? Many thanks.

WMT
 

J5 Bombardier

Well-known member
I use spin on filter adapters. just for the ease over the cannister style. Still tapping off the main gallery, with a restricted fitting and dumping back into the base, better than having none , but not as good as a full flow. Frequent oil changes are the way to go.
J5 Bombardier
 

NH J5 Owner

New member
I use spin on filter adapters. just for the ease over the cannister style. Still tapping off the main gallery, with a restricted fitting and dumping back into the base, better than having none , but not as good as a full flow. Frequent oil changes are the way to go.
J5 Bombardier
J5, many thanks. I though that might be the way to go, having changed the oil today. I am not sure how the cannister connects to the oil pump, but will sort that out. I guess conversion to full flow will require pulling the engine, which I am not prepare to do. Still yarding out this winter's wood(!) Will investigate the spin-on adapter.
When you say "frequent" oil changes (with a partial flow canister filter), how often to change with no filter (in hours)? Many thanks!

WMT
 

J5 Bombardier

Well-known member
Got the crank polished and the valves cut for the 251, just waiting for some valve guides coming from Rock Auto and start to get this flathead together.
My 1959 J5 , had a shake down run this afternoon, the used 265 is running pretty good, going to need a little more carb work and a bad can on the left side replaced .Bored out a couple blocks on the lathe yesterday, cut them and finished on the mill today, it's the start point to built a hitch for this J5 . I couldn't find a used hitch and it's a must when towing a Bombardier trailer.
J5 Bombardier
 

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J5 Bombardier

Well-known member
Got the hitch pretty well mocked up , have a few gussets to tack in and figure out how to lock it in place when not towing. Then it can come off for some welding / grinding and paint . Pretty sure it's the first time this pre 1960 J5 has been on a hoist .....
J5 Bombardier
 

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J5 Bombardier

Well-known member
The hitch is installed, may change the locks for the side pins, but it should be good for now. The bottom hitch is removable, when towing a trailer and to mount a snatch block for skidding. Have to pick up some plate to rebuild the trailer mount and tubing to lengthen the pivot tube as the boom sticks back to far and will interfere with the load.
J5 Bombardier :hammer:
 

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