When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I got the case split open today. I used the method of prying (gently!) between the front shaft and the seal. And then some plastic wedges to propagate the opening.
The case itself looks great.
As do crankshaft bearing 2 and the camshaft bearings.
The cam itself has little visible wear. I am pretty sure this is not a stock cam.
Here's the crank, fully assembled.
The number 1 bearing looks good.
After tapping off the distributor gear, I set up a puller to remove the cam shaft drive gear.
The gear itself looks fine.
Time to remove the connecting rods.
Con rod bearings look ok.
And all the crank bearing journals look very good.
Some quick measurements of the crank journals suggests the main bearings are one step undersize, and the con rod bearings are two steps undersize.
Interesting. I assume you don't know the history of the engine? If it still has fuel injection, I'm not sure why they would change the cam. Cam is usually only changed if you're running carburetors. Maybe I missing something.
Interesting. I assume you don't know the history of the engine? If it still has fuel injection, I'm not sure why they would change the cam. Cam is usually only changed if you're running carburetors. Maybe I missing something.
During an engine O'haul on our '74 914 2L(Craig's list find) our builder changed out the oe cam and lifters due to its lobes being flat. He said that a lot of the Quicky-lube service Co's never hand torqued the sump plate oil drain nut...just zipped them back on with an air ratchet. This over-torque caused excess pressure on the cam bearings, then over time = camshaft run out. We also utilized the Euro pistons for a slight boost in C/R, this engine makes for a very reliable POC C/I class
racer !
Interesting. I assume you don't know the history of the engine? If it still has fuel injection, I'm not sure why they would change the cam. Cam is usually only changed if you're running carburetors. Maybe I missing something.
No known history, except that the guy who owned it before me had it for 3 years, started it only once (and shut it off when gas spurted all over the engine). So, the last time it might have been running (and rebuilt) was about 5 years ago. Plenty of evidence of a rebuild (crank ground undersize, cam, etc.). My guess is the original cam was worn, and they sourced this replacement. I have no idea if the profile is stock.
During an engine O'haul on our '74 914 2L(Craig's list find) our builder changed out the oe cam and lifters due to its lobes being flat. He said that a lot of the Quicky-lube service Co's never hand torqued the sump plate oil drain nut...just zipped them back on with an air ratchet. This over-torque caused excess pressure on the cam bearings, then over time = camshaft run out. We also utilized the Euro pistons for a slight boost in C/R, this engine makes for a very reliable POC C/I class
racer !
07-03-2020, 10:41 PM
