Stuck manifolds (OMC Volvo Ford 5.0)

[supermottl]

replacing the risers and mans on a 1994 raw water cooled OMC VOLVO Ford 5.0 (carbed), and the mans are stuck the the block. There was studs used to hold them on. I just got nuts to pair up to use to take out the studs, but wondering if there's a trick to getting the mans to let go of the block... they are soaking in "liquid wrench" right now.<br />Heat? Leverage? Bueler?<br />Thanks all<br />-steve-

 

[Bondo]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Are you Trying to Replace Them,..???........ Use a BFH,........a SledgeHammer............

 

[supermottl]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Yeah, replacing...<br />I got a 5# hammer... Should I just go to town on them?

 

[elpaso]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Be very carefull that you have all the studs<br />out. If you do the manifolds will fall <br />off.

 

[Don S]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

There are 8 studs on each manifold. If you have all 8 studs out (not just the nuts off the studs) there is nothing holding the manifold on but the gasket.

 

[supermottl]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

I only counted 5, checked pretty good too...<br />they are all in between the exhast ports, except for 1, where there is one stud on each side..<br />Nuts are off, studs will come off next..<br /><br />thanks all...

 

[Don S]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

I knew there was 8, turns out there are 5 studs and 3 bolts on each side.<br />There are 2 "Fastners" on each cylinder, keep looking.

 

[boatgrunt]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Just took mine off this fall. A crow bar did the trick for me, but just make sure that you are not tourquing down on the mating surface of the block.

 

[Lou C]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

And make sure you can get replacements before you trash em, some OMC manifolds are real hard to find!

 

[supermottl]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

K, You'all were right, there were 8 fasteners... 3 of them I couldn't see because they were sunken in where I can't get low enough. I looked at the headers on my 73 Bronco (same motor) and comfirmed there were 8. The mans came right off, and I found new everything at Larry's Lighthouse Marine. Totally nice guys in there, and pretty much the same price as the cheapest on-line place. Found moisture and lots of rust in the 2nd and 3rd cyl on stbd side manifold. Port side looked good. I think they were original mans. Tomorrow I get to bolt everything back on and go for a ride.<br />I also performed a compression check and all 8 cyl's were 125 psi or slightly higher, so it's not a head gasket. I was very happy to see those number and the consistency.<br />I'll report back with a post ride update.<br />thanks again

 

[Don S]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Sure glad you didn't start swinging away with a BFH, or you would now be looking for new heads to go with your manifolds.

 

[murphini]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Newbie Question:<br />BFH....Big "Freakin" Hammer?

 

[Bondo]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Originally posted by murphini:<br /> Newbie Question:<br />BFH....Big "Freakin" Hammer?

Ayuh,.............<br /><br />Well,....... Freakin wasn't what I had in mind.................

 

[rodbolt]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

is short hand for the fine adjustment mallet <br /> anything less than 32 OZ aint worth swinging.

 

[supermottl]

Re: Stuck manifolds (OMC Volvo Ford 5.0)

Update <br />Well, got her all buttoned up and took for a ride... she's all good now, and put to bed. Sounds quieter with the new mans and risers... looks good, no leaks, but did run into one problem...<br />one of the accessory holes was drilled all the way thru so water shot out it when running. Crappy QC dept, I blame this on. So, I tapped the hole and installed a SS cap screw with some teflon tape.. holding tight now..<br />Winterized this past WE and was happy to see that the petcocks actually loosened nicely, and all the water drained out. Then, i just stuck the OD in a giant bucket of anttifreeze (pink stuff) untill it came out the transom (a few minutes later) while fogging it. changed the oil yet again and it looked good.<br />I feel it was a good winterization. should be good to go.