Do you have a link for this mod? Could it be that gasket is not thick enough? Maybe piston to valve clearance is too close???

 

thats ehy im gonna try the 9 gasket cause my head was decked twice. just search "4g63 oil passage mod" and it should be the first one.

 

9 head gasket plus timing belt setup ordered. head will come off next week if i get the parts in time before i leave for st paddys day shenanigans.

 

Keep us posted mate.... I may have to do the same mod as my head has been milled like 4-5 times

 

head is off and so far nothing suspicious other than buildups on the valvestems and piston tops. i took picks but cant get them loaded up from my iphone. tomorrow i will be tearing the head down to inspect the valves and try to clean the piston tops.

i do think that the culprit might be the 8 head gasket though as the 9 looks twice as thick.

i will keep this updated as i inspect everything.

 

yesterday i completed the the head mods. oil passage porting, egr tap/delete. i also cleaned up the valves, combustion chambers, piston tops, intake manifold. i was on the fence about doing the egr mod but once i saw how gummed up my intake manifold, intak evalves and piston tops were it was a must.

i had buildups on some of the actual valve seats in the head that looked like some of the valves were not fully closing. i also checked pistons for play. they all could be rocked when brought to tdc but there was no up and down play. idk how much movement there should be but i took a video of it to show.

today im gonna be doing the timing/balance belt change and try toget the head back on.

 

some pics

 

wont let me do more than one pic per post?

 

cylinder walls. no marks from a wrist pin in any cylinder. i didnt get a pic from that angle though.

 

all pics were before cleaning. ill take some today of them cleaned.

 

pistons cleaned of debris. didnt get to into it as i did not want to clog any galleys.

 

valves and combustion chamber cleaned of debris. again mostly just the buildups were taken away, nothing crazy as i left the valves installed.

 

ok ive only gotten about a half hour of driving on the clock but the sound remains. i believe it is piston slap and nothing else. if you look at the pic of the head you can see i still have alot of that oil galley remaining. i still modded it though as to make a better/softer angle to the port. in all im glad i took everything apart to see what my 28k old built motor looked like.

when i get back from my trip this weekend i will upload the video of the pistons rocking and someone who knows better can let me know what they think.

 

Can you post a revised video with it starting cold and then warming up?

 

trying to upload from my phone but its wont let me.