Gurt Automotive has been steaming away with some work lol. Did a complete timing belt and water pump on a 97' 4runner due to a leaky water pump gasket, was one of toyota's old full metal gasket that had rusted out which prompted it to be a T/W job, THANKS OBAMA lol (iykyk). Got that knocked out with the full toyota/aisan kit on ebay.
Next on the list was a HG job on a 80, Compression check was good at a solid 190 psi till cylinder 6 which was at 140. So diving into it i knew there was going to be some kind of issues. Pulled the valve cover off to find this
Seems like the motor has seen quiet some heat at some time or ran with low oil, Lots of carbon build up around the disturber and heat marks all along the cam and the lobes. Continued further into and got the head pulled off and found my issue and what further explained heat issues and low oil.
Heat spots and ring marks on the top of the cylinder walls from detonation? Never seen something like this before. Barely any groove that i can feel and only at the top of the cylinder walls, but lower than that it still has perfect cross hatching. Coolant/Oil passes were pretty clogged up.
Gonna pull it the rest of the way and take it down to the machine shop for them to deal with it and get it right.
Got some more progress for the supercharger for the 80. Got it all stripped and the motor out.
Removed the core support and inner fenders. did a compression check, As my luck would have it, Cylinders all had 190pso except for 4-5 at 160. Suspecting a HG but ill get it stripped down at some point to further investigate the issue, Me and Pops went ahead and and ripped the motor out all in one since we had easy access to do so. Now she's about off to end her life at the scrap yard.