ClaudeMachining Posted April 11, 2017 Report Share Posted April 11, 2017 I like the Chariot one because less orings Envoyé de mon SM-G935W8 en utilisant Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 . Here's what I ended up with Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 Domes after I machined them Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 What I started with Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Profilact Posted April 11, 2017 Report Share Posted April 11, 2017 The right cylinder looks like it wasn't getting enough fuel... Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 End result (pre popped piston) Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Profilact Posted April 11, 2017 Report Share Posted April 11, 2017 Port Chamfering? Fuel wash? Quote Link to comment Share on other sites More sharing options...
J-Madd Posted April 11, 2017 Report Share Posted April 11, 2017 Am I missing it or did you say what fuel you're running? Sent from my STV100-1 using Tapatalk Quote Link to comment Share on other sites More sharing options...
LukeSandiefer Posted April 11, 2017 Report Share Posted April 11, 2017 Just here for the comments, I'm putting mine together soon and this is the last thing I want happening. Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 Was just breaking it in w 93 non ethanol and plenty of oil since I lowered the compression down to the 160ish range Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 11, 2017 Author Report Share Posted April 11, 2017 I left the timing alone from where it was originally. +5* Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
edgehanger Posted April 11, 2017 Report Share Posted April 11, 2017 Say you snagged a ring or seized one? I can't remember. Anywho, with a port that wide there should be a pretty generous chamfer. A coolant leak will seize rings. When you put the head on make sure the orings stay in place and don't get pinched. Use a little vaseline or sometimes i use a little glaze of sealant to hold them. First thing i do on a rebuild is figure out why it popped. First thing i do after rebuild is heat cycle with the radiator cap off to verify that the coolant is circulating and not blowing bubbles as i give it a few light blips on the throttle. Always check ring end gap and never start the engine without a leak down test first. I've seen brand new seals leak before. The plugs and pistons from the old engine would tell you how it was running and the jetting. I don't add extra oil to the mix on break in. With the extra oil you are effectively leaning the jetting. A coat of oil on the cylinder walls and oil on the rings is enough. 32 to 1 ratio is plenty of oil. Snapping or seizing a ring 15 minutes on a fresh build is probably either that wide port or coolant leak. Hope this helps Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
J-Madd Posted April 11, 2017 Report Share Posted April 11, 2017 Does anyone see what I am not seeing?No piston crown damage? Sent from my STV100-1 using Tapatalk Quote Link to comment Share on other sites More sharing options...
edgehanger Posted April 11, 2017 Report Share Posted April 11, 2017 I don't see a chamfer on the ex port. Piston looks like it's been washed clean Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
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