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 Post subject: Re: Ford F-250 overhaul
PostPosted: June 20, 2017, 12:10 pm 
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Joined: August 12, 2012, 6:38 pm
Posts: 1822
Location: worcester county, Massachsetts
turbo_bird wrote:
The cams run direct in the aluminum heads, no bearing shells, so that's a bit chintzy.


No its not, that's normal for cams running in alloy cylinder heads. Motorcycle engines have been designed that way since the 1970s. The aluminum makes an excellent bearing surface for the cams to run in.

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 Post subject: Re: Ford F-250 overhaul
PostPosted: June 20, 2017, 4:50 pm 
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Joined: August 27, 2005, 1:04 am
Posts: 1198
Location: Kamloops, BC, Canada
robbovius wrote:
turbo_bird wrote:
The cams run direct in the aluminum heads, no bearing shells, so that's a bit chintzy.


No its not, that's normal for cams running in alloy cylinder heads. Motorcycle engines have been designed that way since the 1970s. The aluminum makes an excellent bearing surface for the cams to run in.

It may be common, but I'd still rather see replaceable bearings so that if there's any damage you can replace a bearing instead of a head.
Kristian

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 10, 2017, 4:48 pm 
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Joined: August 27, 2005, 1:04 am
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Location: Kamloops, BC, Canada
Talked to the machine shop that's got my block and heads today, he still hasn't touched my stuff in 3 weeks. He says tomorrow is the day. We'll see I guess. I also asked him to get a price/order all the rebuild parts for me, seeing how the Amazon seller hasn't got back to me about what's included in the kits they list for $1000. It's going to cost more getting stuff from the local guy, but it'll be brand name parts of known quality and I shouldn't have any cross border headaches. I've also got to fix some rust on this truck. There's lots of areas on the lower rockers that have the galvanising worn off from gravel spray and have surface rust now. I was thinking about either areosol rust converter (basically phosphoric acid) or POR-15. I'm not sure if POR-15 is available in Canada though. Has anyone used both and can compare results?
Kristian

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 10, 2017, 5:09 pm 
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Joined: January 2, 2009, 1:45 pm
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Location: Halifax, Nova Scotia
I've bought POR-15 in Canada from Stright-MacKay in Pictou NS, but there must be a source in BC.

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 10, 2017, 7:54 pm 
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Location: Kamloops, BC, Canada
Well I googled it, and Canadian Tire carries POR-15, but not the prep stuff. Maybe I'll try the phosphoric acid based rust converter first, then POR-15. I'll put some rocker guard rubberized stuff on to hopefully stop the gravel from destroying the surface again. I've also been reading about some stuff called Ospho on a hotrodders site that is fairly highly recommended. We're heading to town tomorrow, so I'll see what I can find.
Kristian

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 10, 2017, 11:12 pm 
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Joined: March 19, 2011, 10:22 am
Posts: 909
Location: Holden, Alberta, Canada
Kristian

This is the Por-15 I get from Canadian tire to prep my frames.


Attachments:
File comment: Por-15 metal prep
fullsizeoutput_3a2.jpeg
fullsizeoutput_3a2.jpeg [ 198.82 KiB | Viewed 129 times ]

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 11, 2017, 1:39 am 
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Location: Kamloops, BC, Canada
horchoha wrote:
Kristian

This is the Por-15 I get from Canadian tire to prep my frames.

Well I'll have to see if they have that too then. I did t find it on their website, but that doesn't mean a whole lot. Thanks guys.
Kristian

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 Post subject: Re: Ford F-250 overhaul
PostPosted: July 11, 2017, 9:05 am 
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Joined: February 28, 2009, 11:09 pm
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Location: Connersville, Indiana
If you can snag some of the metal prep, do so. Phosphoric acid is an excellent paint prep, but offers very little rust protection. Metal prep is a zinc phosphate, which adds rust protection.

Great stuff.

Bill


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 Post subject: Re: Ford F-250 overhaul
PostPosted: August 4, 2017, 12:15 pm 
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Joined: August 2, 2009, 3:34 pm
Posts: 548
Location: Alberta
turbo_bird wrote:
horchoha wrote:
Kristian

This is the Por-15 I get from Canadian tire to prep my frames.

Well I'll have to see if they have that too then. I did t find it on their website, but that doesn't mean a whole lot. Thanks guys.
Kristian


Pretty sure I bought mine from CT.

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