Post by p5andrew on Feb 2, 2020 19:41:40 GMT
Hi All
I am in the latter stages of a complete bottom up rebuild of the engine of my 1971 P5B Coupe. I have rebuilt a number of these engines in the distant past, all from P6B's. I have hit an unexpected problem with my current project. The original block had a fine crack to the centre bearing saddle so I have sourced a good replacement block, it so happens from a P6B of unknown age. The block has been re-bored and honed and fitted with a reground crankshaft, new camshaft bearings and so forth. The heads from my P5B engine have been stripped and refurbished. Ancillaries have been stripped and rebuilt. The whole lot has been assembled with total attention to detail throughout and I am very pleased with the result so far. Except for one detail. When the dipstick and tube were fitted (the originals from the P5B engine) I found it difficult to insert the dipstick as it tended to foul the sump baffle. Trying the dipstick from several angles eventually got it to pass the baffle and push fully home. All then seemed well and I thought nothing more of it until I was turning the engine over by hand to set up the static ignition timing when I could hear what seemed to be the crankshaft or a big end cap fouling the dipstick. I removed the sump and found that the dipstick was indeed fouling one of the crankshaft webs. I have compared the baffle from the P5B with that from the P6B and the hole through which the dipstick passes is the same. The dipstick hole through the block appears to be identical in both blocks. I presume the dipsticks are identical but unfortunately the P6B engine I purchased for its block came without the dipstick so I cannot compare them. Any ideas anyone?
I am hoping to get the engine back in the car next weekend but need to solve this first!
Andrew
I am in the latter stages of a complete bottom up rebuild of the engine of my 1971 P5B Coupe. I have rebuilt a number of these engines in the distant past, all from P6B's. I have hit an unexpected problem with my current project. The original block had a fine crack to the centre bearing saddle so I have sourced a good replacement block, it so happens from a P6B of unknown age. The block has been re-bored and honed and fitted with a reground crankshaft, new camshaft bearings and so forth. The heads from my P5B engine have been stripped and refurbished. Ancillaries have been stripped and rebuilt. The whole lot has been assembled with total attention to detail throughout and I am very pleased with the result so far. Except for one detail. When the dipstick and tube were fitted (the originals from the P5B engine) I found it difficult to insert the dipstick as it tended to foul the sump baffle. Trying the dipstick from several angles eventually got it to pass the baffle and push fully home. All then seemed well and I thought nothing more of it until I was turning the engine over by hand to set up the static ignition timing when I could hear what seemed to be the crankshaft or a big end cap fouling the dipstick. I removed the sump and found that the dipstick was indeed fouling one of the crankshaft webs. I have compared the baffle from the P5B with that from the P6B and the hole through which the dipstick passes is the same. The dipstick hole through the block appears to be identical in both blocks. I presume the dipsticks are identical but unfortunately the P6B engine I purchased for its block came without the dipstick so I cannot compare them. Any ideas anyone?
I am hoping to get the engine back in the car next weekend but need to solve this first!
Andrew