351W problems... Problem solved!

The journals on the cam look fine. I haven't been able to get to the shop to knock out the bearings to see what the bores in the block look like.


And yes, I clean the block with brushes and solvent. Only way to go....

As stated make sure all oil passages are clear....Do you prime your motors before starting them ?? For me it proven to be well worth the time..........

Have you checked for a collapsed oil filter ?? It happens more than you think.............

Finally dropped this off at the shop last week to get it tanked and some new bearing put in.

The guys at the shop all said too much spring pressure... Not sure I agree since the hyd flat tappet can was perfect looking...

Thoughts? Could too much spring pressure caused just a stock replacement cam bearing to fail?

jbozzelle wrote:Finally dropped this off at the shop last week to get it tanked and some new bearing put in.  

The guys at the shop all said too much spring pressure...  Not sure I agree since the hyd flat tappet can was perfect looking...

Thoughts?  Could too much spring pressure caused just a stock replacement cam bearing to fail?

No.

Think about it..we use HUGE roller springs on our big blocks and don't have that issue..

QtrWarrior wrote:

jbozzelle wrote:Finally dropped this off at the shop last week to get it tanked and some new bearing put in.  

The guys at the shop all said too much spring pressure...  Not sure I agree since the hyd flat tappet can was perfect looking...

Thoughts?  Could too much spring pressure caused just a stock replacement cam bearing to fail?

No.

Think about it..we use HUGE roller springs on our big blocks and don't have that issue..

That's what I said.....

Dragging this back up because we figured out what happened.

The crank was turned .020/.020 and had .010 rod bearings on it. Not sure on the mains. Those were tossed in the trash by the shop when the block was tanked.

So I feel better knowing what happened. Makes me know I shouldn't have any issues when I reassemble it here in another week or so...

Ooch, Well at least you got it figured out.

How in the HELL does one put .010 bearings on an .020 crank...and then button it all up as if everything is hunky-dory??

Honest mistake i guess.

Fired! Next.

The funniest thing about all of this is that my Dad and I chased our tail thinking the timing was off since it only "rattled" once the rpms were up past 3500...

I mean we flat out argued about whether or not he put the right timing pointer on it with the correct balancer, etc... LOL

Now, we know what the rattling was all about... Damn thing had decent oil pressure for a good few weeks too. Once the oil pressure went to shit we knew it wasn't ignition timing...

Waiting on new bearings to arrive and it's all going back together here soon. Had Blake grind me a nice custom hyd roller too. Hoping to get it in my 78 Futura in time to bring it to the race at US60...

And the guy who assembled it passed away last year. Was a good guy too that ran one of the best machine shops around for years. Damn cancer got to him. He assembled this one when he was in and out of the hospital. Can't really blame him for the mess up. He was just doing what he loved for as long as he could...

Sorry to hear about your machinist RIP. You will likely be like me and have a hard time finding another good one.