Runs Geat, Needs Everything

Head gasket and oil leaks

Head gasket and oil leaks

Since the late 80′s or early 90′s we have been servicing the car that goes with this engine and it has always been one of the best running examples we know of. I remember riding in the truck with my father to get the car on a cold and foggy night, probably around this time of the year, no, it had to have been early November. It was a brutal trip through that pea soup thick fog as we went over some of the mountains in the Berkshires on route 22.

The current owner of the car drives the wheels off of it and we have overhauled a number of components like the brakes, transmission, and fuel pump but now it’s time to address the engine. It runs great, starts instantly and doesn’t smoke but there are so many oil leaks that we have to break it down to clean it off in order to remedy them. We were blown away because as well as it ran, the compression and leak down numbers were bad displaying 30% loss in some cylinders where there should be no more than 5-10%.

So, apart it goes – it’ll run through our “process” that includes getting the rear main bearing cap cut and grind the crankshaft for a conventional lip seal, new forged pistons and a needle bearing roller follower set among thousands of other things. The motor mounts are blown out and the water pipes will likely have holes in them and will need to be replaced so we will be busy this winter getting all these 250′s back together for the spring.

As much as I hate to mention it for superstitious reasons, we’ve had great success with Ferrari engine overhauls over the last half a dozen years. A few times a week other shops call me asking how to get head gaskets to seal and how to make water pumps turn without leaking or how to make mechanical fuel pumps to work as intended. Their shops are struggling to find the exact formula, and we seem to have it locked down lately. Nate has assembled so many of these engines, he seems to have a real formula on setting the clearances, knowing the tricks to seal them up and making sure every detail is nailed down too.

Clutch housing on 250 engine

Clutch housing on 250 engine

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1 Comment »

  1. Rob said,

    December 7, 2011 @ 8:05 am

    Great to seem some new cars in inventory. I love those series 3 Jag coupes looks like a great project for someone.

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