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Author Topic: 351W long rod very short life  (Read 35590 times)
fidstang
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« Reply #45 on: September 16, 2010, 12:25:32 pm »

Yep I could of checked the rod clearence, At the time I actually did, we had some .010 bearings on a .020 journal and I caught that one, so I pulled the original rod bearings I had run back in 2004 and handed that to my buddy to get a duplicate.
Still My fault for not checking.
Oil pressure was low hot idle 10 psi 45 psi at 4000 rpm.

I love telling the truth, makes me look more like a liar!  Most people rather hear some bullcrap instead cause they rather believe that instead of truth  WTF

Javier

Do you mean 2 thosandths or 20 thosandths? .002-.003" is what I thought it should be. 
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ranchopower
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« Reply #46 on: September 17, 2010, 01:40:29 pm »

Yep I could of checked the rod clearence, At the time I actually did, we had some .010 bearings on a .020 journal and I caught that one, so I pulled the original rod bearings I had run back in 2004 and handed that to my buddy to get a duplicate.
Still My fault for not checking.
Oil pressure was low hot idle 10 psi 45 psi at 4000 rpm.

I love telling the truth, makes me look more like a liar!  Most people rather hear some bullcrap instead cause they rather believe that instead of truth  WTF

Javier

Do you mean 2 thosandths or 20 thosandths? .002-.003" is what I thought it should be. 

We are running 351/400 connecting rods in the 351 windsor.
We had 351W rod bearings instead of 400M rod bearings installed.
So that means we had .012 running clearence .010 too much!

Now we have it all under control and it will have .0025 rod bearing clearence.
The engine is almost ready to reassemble, will keep progress updated...

Javier
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ranchopower
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« Reply #47 on: August 06, 2011, 11:45:47 pm »

Short block now assembled,  took some time to get there, still just a short block, the heads are fresh again, a lil beat up but still worth a roll.
Only issue I ran across is the Hyd roller block I have now along with the small Base cam and comp link bar hyd roller lifters I used before, The lifters sit low in the bores.

The block I had set the cam up in before was a non roller block, so I have to see what needs to be done to solve this issue.

Anyway soon this engine will be running again as I get more time to assemble.


Javier
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BirdMan
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« Reply #48 on: August 07, 2011, 12:44:33 pm »

Look at the lifters at base circle to check for oiling band issues.  It might be too low as with some solid rollers are.
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68mustang405
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« Reply #49 on: August 07, 2011, 01:07:16 pm »

I thought you're only supposed to use a small base circle cam with stock style lifters cause they are taller than linkbar lifters?
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knucklefux
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« Reply #50 on: August 07, 2011, 03:57:33 pm »

I thought you were supposed to avoid small base circle cams all together  Whistling Whistling
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ranchopower
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« Reply #51 on: August 07, 2011, 04:31:11 pm »

Yes avoid them like the american dollar, but this combo is already purchased and works good, I got stuck using these parts. So SBC will or wont work in a hyd roller block, I dont see it working I may be fubar, I have to look a little more before I have to decide what to do.

Javier
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knucklefux
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« Reply #52 on: August 07, 2011, 08:02:52 pm »

Yeah, the lifter bosses are too tall.
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68mustang405
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« Reply #53 on: August 07, 2011, 10:30:29 pm »

either different cam, or different (stock style) lifters
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aussieracer
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« Reply #54 on: August 19, 2011, 04:24:50 am »

Mill a slot i'n the lifter  up from the waist band, parallel too the pin. On both dides ,It works on solid roller lifters
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BirdMan
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« Reply #55 on: August 19, 2011, 08:03:58 pm »

here is a link on modifying sr lifters to line up with lifter oiling passages in the block if the lifter oil band is below the passage hole.

http://sbftech.com/index.php/topic,13367.0.html
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