caseys Posted September 25, 2009 Share Posted September 25, 2009 Right, a friend of a friend I have been told has a 2JZ block sat spare which has had a stroker kit installed and also a full rebuild/upgrade of the bottom end as well as the head. I've potentially been offered this block at a very reasonable price I think, but of course want to take it to a garage to have a full test of it done. How easy is it to identify parts in an engine that have been modified? i.e internals, head, bottom end, stroke length? My first thoughts are making sure this block has what is said to be done to it actually done to it, parts in it that are stated and also then quality/condition of it. I believe the block is just sat in a conditioned storage area, it's not been run in a little while and is sat without any ancilliaries attached etc. I know at the bare minimum I need the head taken off, a leak down test performed. What else? Just trying to estimate labour wise what it'd cost me to validate this engine's worth the money and even if it's worth me paying £xxx to get it checked. I am currently running a stock block which has had head work done on it recently with AFR, very good work it is too. But if I can get a built block with a 3.4L stroker in it, it's very tempting Also of course any recommendations of where to take this block to get it certified would be great. Mods, thread is in technical for the aspects of 'what to check/verify when you buy a block of unknown spec' angle, but move it to Supra chat if you think it's where it belongs. Cheers Quote Link to comment Share on other sites More sharing options...
suprasurrey Posted September 25, 2009 Share Posted September 25, 2009 The stroke length is easy to check yourself. Remove a spark plug and measure the difference between top and bottom dead centre of the piston through the plug hole. Standard stroke length is 86mm and an HKS 3.4L stroker kit has a bore of 87mm and a stroke length of 94mm for reference. Regarding modified internals, you will only know for sure by stripping the head and sump off and taking a look. I would recommend that you have the main and big end bearings checked for clearances and damage while the sump is off. I hope this helps:d Quote Link to comment Share on other sites More sharing options...
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