fitting new m-tuned rods
#1
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Join Date: Mar 2010
Location: Glasgow, Scotland, U.K.
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fitting new m-tuned rods
I only plan to fit m-rods to my 1.8 not planning a full overhaul as the engine appears to be in good condition 5% leakdown.
What I was wondering is should I use the original bearings from my old rods or should I fit new bearings in..........If i fit new bearings is it necessary to run it in on mineral oil or will it be ok on synthetic..
any help much appreciated thanks.
What I was wondering is should I use the original bearings from my old rods or should I fit new bearings in..........If i fit new bearings is it necessary to run it in on mineral oil or will it be ok on synthetic..
any help much appreciated thanks.
#4
If you're going to the trouble and expense to put in better rods, don't cheap out on the bearings. If I had an engine that far apart it would get new main and rod bearings.
As for break in oil, what 90R said... are you using new rings?
If you've honed the cylinders and installed new rings don't use synthetic. Despite the 5% leakdown numbers I'd probably do a hone/rings just due to having disturbed everything during the disassembly/reassembly process.
As for break in oil, what 90R said... are you using new rings?
If you've honed the cylinders and installed new rings don't use synthetic. Despite the 5% leakdown numbers I'd probably do a hone/rings just due to having disturbed everything during the disassembly/reassembly process.
#7
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I once ran my 323gtx w/o oil. The new bearings were looser than the oldass "worn" bearigns accordign to the plastigauge. I put oil in it and the knock went away. I still have that package of bearings somewhere in my attic.
#13
If you remove the pistons from the bore you must use new rings and hone it. Just a bottle brush hone will do the trick, but you have to do it. You will never.. EVER get the rings lined up in the bore exactly as they were before you removed them. That will cause sealing issues, bad compression etc. If you can manage to keep the pistons in the bore while installing new rods, more power to you... but don't pull them out and put them back as they are.
#19
Maybe I'm just a distrustful bastard... I've seen inside too many "professionally" built engines at work to trust anything I didn't do myself.