1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Well I got a few tests done on the engine today,

vacuum 18 - 19 at idle and steady. Vacuum rose slightly as the engine warmed up.

Compression:
1   125
2   150
3   140
4   145
5   150
6   135

Did not put a gage on the oil pressure but it is reading on the m even when hot so good enough.
I am impressed with the compression readings on an engine that has not run in years.
Number 1 is slightly down but who knows how it will be after fresh oil and working for a while.
I am only going to do a reseal and then retest after an oil change and a few good hard runs.

Bob
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
Those are pretty good numbers, Bob.  I'll bet it runs quite well.  
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Yes Gary the adventure begins.
I am really impressed with how nicely that 300 starts and runs.

I disposed of the camper - A guy I knew took it to salvage the appliances.
I got it off the truck okay but with none of the jacks working it was rather precarious. A sudden gust of wind demonstrated how precarious as the camper did a twist and fell to the ground. We were all standing back as we did not trust it at all.
Then we skidded it onto the back of a trailer. Gone - yahoo!

I pulled the C6 and GV and sold that.

Today I pulled the engine. I had been looking at it and deciding whether or not I needed to pull the hood.
I looked at the hood hinges and figured if I undid the springs the hood would open higher and if I loosened the cowl I could lift the hood even higher - hmm?

Decided to go ahead and try pulling it and if I needed to move the hood I would do as above.
It was a very close thing but I managed to pull the engine without having to do anything with the hood.











On the donor truck I have been soaking fasteners with atf/acetone mix to hopefully get them to break free without too much effort. On first attempt with trying to loosen them they are not budging. So will soak several times and see how they are.

Gary I have been reading your big blue transformation thread and I am about 1/3 way through. That is epic and encourages me to keep moving forward.
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
Yes, it is an adventure.  And sometimes they are epic adventures.  

Seriously though, I find that posting what I've done each day helps me, in several ways.  One, if I need to refer back to what I've done I can find it, and I've had to do that frequently.  Two, just looking at the truck doesn't say "You've really, REALLY done a whole lot!"  But when I go back and read some of it I'm blown away with what's been done.  And three, I get encouragement from the comments of others.

So, I highly recommend that you track your progress, and as often as you can.  You'll be surprised how much benefit you get from it.

As for what you've done, you are certainly making progress.  Getting the camper off w/o getting hurt sounds like an adventure.  Selling the GV was probably easy, as they are sought after.  But getting that engine out, and especially w/o removing the hood, is quite an accomplishment.  Well done!  
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

ArdWrknTrk
Administrator
In reply to this post by nic55kel
That's a really impressive engine crane Bob!  

Looks like it has hydraulic motors in the hubs too???  
 Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Gary, thanks for the encouragement and I will try to document more details.

Jim, thanks on the engine hoist. the axle is an 8.8 out of a 1990 F150 with a hydrostatic drive. The steering and fore and aft is controlled by the large joystick with a trailer ball knob on top.









I built it in 2013 and I usually have a platform on it so I can trim trees and it got used a lot when we were doing the roofing on the garage and house.
When I was lifting the engine out I would guess it was about 50lbs away from the tipping point.

Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

ArdWrknTrk
Administrator
😳.         Definitely looks like it could use some counterweight fully extended to the roof like that!
 Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
In reply to this post by nic55kel
Wow!  That's the nicest hoist I've seen.  

So, what is the motive power?
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Thanks Gary, it is powered by a 9 hp chinese motor that drives a hydrostatic pump and in the picture I was experimenting with a power steering pump but ended up using a 4 gpm gear pump for the hoist and steering functions. I gave up on the PS pump because its' displacement was too big the functions were way too fast.

The hydraulics are very lightly stressed. I have the relief set at about 500 psi which just about matches the tipping point with me not standing on it. I have a gauge permanently installed on the load side of the hoist cylinder and it was reading 500 psi when I was lifting that 800 lb 6.9.

It works really nicely for shunting loaded trailers and dead vehicles around.





The "power pack" assembly is on its' own rubber mounted base.

Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
That is cool!  The engineering is quite interesting. But how does it turn?

Would sure have been nice for many things I’ve done.
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
There is a steering cylinder that controls the position of the tricycle gear. The tricycle leg has a hub and bearing for the wheel of course but then there is a hub and bearing at the top that allows it to swivel.



The control valve and steering cylinder are controlled by the joystick side to side motion.







Other than the bridge over the tricycle gear the whole frame and hoist are made from salvaged 4" channel and 2x3 L sections welded together to form box sections. Lot of welding but I had a lot of time on my hands when I did it.
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
Thanks for the explanation.  I can see how it works now.  
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

grumpin
Very nice! Great job on that crane!
Dane
1986 F250HD SC XLT Lariat 4x4 460 C6-Sold
1992 Bronco XLT 4x4 351W E4OD
1998 GMC Sierra SLE K1500 350 4L60E
Arizona
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Thanks Dane
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
All I got done on the truck today was to pull the 6.9 engine perches. Not much but something.

I did however quickly rip apart the old 6.9 to see if I could find a collapsed piston or something to account for the piston slap.
I could not really understand what I found. The pistons looked quite recent and the rings were nice and free but the bores made no sense at all - I could see no trace of any crosshatch in any bore???







The engine had obviously been apart but surely if you go to the trouble of replacing pistons and rings you would de-glaze and hone the cylinders!!!

I can't believe those are the original pistons - much too clean and unmarked.
Anyway all off to the shredder now but that had me shaking my head.
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

Gary Lewis
Administrator
I think that's exactly what they did - put new pistons and rings in an old bore.  That's a waste of time and money.  Frequently the rings won't seat and the bore isn't round, so ....
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Well had a couple of good days.
Hauled some scrap to the shredder and had a pleasant surprise. I had 3 old GM catalytic converters from behind 90's 3800s that I had scrapped a few years ago. I was thinking I would get maybe $100 each for them, $250 each yahoo.
Now these are Canadian dollars but still very nice.
I have been picking away at the donor vehicle but the fasteners on the cross member have been miserable. I got some of the fasteners out on the drivers side but then I got the cutoff wheel out and just cut off the other side. I have a better cross member so why waste time on it.



Ready to pull





Well now I know where all the fluff came from in the starter drive. There are a couple of vent holes in the bellhousing that the mice must have got in through. Just visible above the release fork.
11" clutch - ring gear is a little chewed up so will have to do something about that while it is out.







Opened up the transmission. Not as good as I had hoped but not bad for its age. I know from the PO that low gear was used quite a bit so that would explain the chipped teeth. 2 - 4 look good and the synchros all appear good, The slippers on the shift forks are all present and in nice shape.
I am thinking that I will remove the PTO cover as I believe there is a magnet on the bottom of the case and hopefully I can clean all the metal particles off it. Looking at the chipped teeth on low gear I am thinking that I could dress them with a cut off wheel to get rid of the jagged edges - using lots of rags etc. to keep debris out of the transmission. I will use low but not on a regular basis so I am sure the gear will last me the rest of my life but think it might live longer if I clean it  up a bit.
Anyone have any thoughts on this?
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

ArdWrknTrk
Administrator
I guess that's what happens when you grind it into no-synchro 1st???
SMH.  Don't people understand how to double clutch and match revs?

I don't know if I would mess with it at all.
I imagine the mating input shaft gear looks worse because it's smaller?

 Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
This post was updated on .
You are right Jim I need to look at the countershaft low gear.
Hopefully I will be able to inspect it when I pull the PTO cover.
My experience with these transmissions is that low is only used from a standing start with a load or when you want to creep the vehicle. I would guess the damage was done from not letting the countershaft spin down before attempting engagement.
My solution for that is to engage 2nd to stop the countershaft and then attempt to engage low.
I can't imagine anyone downshifting from 2nd to low (more than once) while the truck is moving but who knows. I have seen pictures of these gears in much worse shape and with every tooth ground down. The picture I took is of the worst part of the gear so I think it was just something that happened only occasionally. I will let you know the condition of the countershaft gear but I don't think I will be able to get a picture.
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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Re: 1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed (formerly 4.9 E4OD)

nic55kel
Well I really lucked out on the clutch. It appears the clutch is brand new and the flywheel appears to be as well. I had thought that the ring gear was in much worse shape than it really is - just a couple of small chips on two teeth. Has a needle pilot bearing and I am sure the release bearing is also new (20 odd years ago).









Starting to think I will not have to do much to this drivetrain at all.
The rear main seal looks nice and dry on the engine but the oil pan and valve cover gaskets are both pretty wet so I will reseal those and while I am at it I will pull the timing cover and change the seal. I want to be sure that the cam gear is cast iron.
Bob near Winnipeg

1986 F250 Lariat extended cab 300 T18 2WD
1979 Honda CX500
1992 Oldsmobile 98 touring sedan
2007 F250 6.0 4wd
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