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FJ engine mount frame to use a conventional engine stand, anyone seen one?

Started by Pat Conlon, September 25, 2020, 10:24:20 AM

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Old Rider


Pat Conlon

That will definitely work, thanks for the link :good:

If I did not already have a engine stand, I would buy this^^
(and add a set of casters)
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

RPM - Robert

RPM is your best source for K&L parts and I am pretty sure we sell that engine stand for less than that, I will confirm next week.

I know Ron Chase has one of these stand when he rebuild his engine. You can see it in his very first post of his epic ride for his fathers birthday: http://www.fjowners.com/index.php?topic=10252.0

If anyone is interested, please let us know and we will take care of you.




Pat Conlon

Ok, thanks Robert.... if I go that route, I'll wait to hear from you....no hurry.

Like I said, I already have an empty engine stand....a horseshoe type frame that supports the front and back upper mount points with side the rails in a neutral zone or at least far enough away to get the clutch basket, generator and starter out.
Other than than those 3,  I can't see any other big items you would need side access to...
Everything else would be top or bottom access.

If the side rails on the support frame causes me heartburn, I can always drop $200 with Robert.

I'll wait to see what our evil genius FJ racer comes up with....
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

fj1289

Here is half way through try #1







I need to pick up another stick of the 1 inch square tube to use as the base to triangulate the support arms to the front mount.  Also a 2' piece of 3/8" all-thread for the front mounts - the bolts through the rubber bushings really like to twist.  

I didn't worry about clutch access - I'll do that in the frame.   Did make sure there was room to get a wrench on the crankshaft nut to turn the crank as needed  

The rear mounts are some chopped up Mopar big block engine mounts, the c-channel arms were left over from another project.  

After talking to Randy today, looks like I'll be splitting the 1314 engine again to check a few things that could be related to the shifting problems at the last race (2 years ago now  :cray:).  It'll be a good test for the stand - the crankshaft is heavy and pretty far out there ...

Had to remove the "embedded" url tags in the middle of my pics again ...

fj1289

Lost my post again!  Back to writing it up in notepad first since either way I have to edit the pics to get them to show.

Added bracing to the front mounts that triangulates with the rear mount.  Still have to finish the welds, but it's all tacked into place now and seems to be fairly sturdy.








X-Ray

Great topic. Was looking at ways to do this recently as when I do the '84 1100 engine tidy up, I also have to replace the oil pump pick up screen, would like to do this on a stand of somesorts. A stable stand that will hold the engine and alllow it to rotate would be the answer
'94 FJ1200 Wet Pale Brown
'93 FJ1200 Dark Violet/Silver
'84 FJ1100 Red/White

'91 FJ1200 Dark Violet/Silver ( Now Sold)
'92 FJ1200 Project/Resto Dark Violet/Silver (Now Sold)






For photos of my rear wheel swap, heres the link  https://www.flickr.com/gp/150032671@N02/62k3KZ

fj1289

Old Rider in reply #15 probably has the easiest answer.   Like Pat, I already have an engine stand I'd like to use.

If you don't plan on splitting the cases, Randy's simpler style in reply #6 would work well too. 

If you want to play with a welder - this would be a good project...

Pat Conlon

Looks good Chris, that's exactly how I envisioned the side bar support with the angled brace for mid span support. The angled brace works in both tension and compression, depending on which side is up.

The FJ engine weighs what? Around 200 lbs?
How much load on the front mount vs rear mount? The load distribution I suspect is not split an even 50%-50%.
I think the front of the engine is heavier with the crank, cylinder block and head...what do you guys think...60% load on the front mount and 40% on the rear mount....??
So, we need the cantilever front of the frame to be able to carry 120, or say 150 lbs for a safety factor....?
Comments welcome!

Thanks Chris, I think your design will work out fine. Much appreciated. :good2:

Pat
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

X-Ray

I wonder if Pat the weight of the gears assembly might even things out in the back half of the engine?
'94 FJ1200 Wet Pale Brown
'93 FJ1200 Dark Violet/Silver
'84 FJ1100 Red/White

'91 FJ1200 Dark Violet/Silver ( Now Sold)
'92 FJ1200 Project/Resto Dark Violet/Silver (Now Sold)






For photos of my rear wheel swap, heres the link  https://www.flickr.com/gp/150032671@N02/62k3KZ

fj1289

The crankshaft is usually the heaviest part of any engine.  That's my main concern for supporting weight.  I'm guessing it's at least a fourth of the total engine weight - maybe half of just the closed up cases (no cylinder, head, clutch, starter, alternator, etc). 

Hopefully over the next few days I can finish welding and put a coat of paint on it.   Then next week put the bottom end of the 1314 engine on it and have a go.  

RPM - Robert

If I remember correctly the crank is 27-28 lbs. without being balanced or lightened.

fj1289


fj1289

Finished welding it up.   Most of today's welds were entirely mediocre - progress!!  This flux core mig is all about being able to see the puddle.  You can definitely tell where I couldn't pick out the puddle for crap.  

Also threw some paint on it.   Paint over mediocre welds is ok, paint over the ugly welds makes them FUGLY!   :blush:

Pics tomorrow in daylight

ribbert

That's a great job Chris, without trying to re invent the wheel you've come up with an excellent design.
You've allowed for the load throughout the entire 360 deg of rotation and up to the weight of a complete engine, all the while keeping it simple. It's great, it ticks all the boxes and I like it.

You do realise you spent your entire previous post apologising for shitty welds, well don't, you're in good company here, it's not a welding forum. I'm so good at shitty welds I reckon they deserve some sort of recognition in their own right.



Noel
"Tell a wise man something he doesn't know and he'll thank you, tell a fool something he doesn't know and he'll abuse you"