[Stroker Ace Ventura]

Valve, meet piston... Now play nice!!

 

[Stroker Ace Ventura]

Get a bore scope and go in the sparkplug holes if you suspect anything solid in a cylinder. Have you confirmed your valve train is sound and corectly installed?

 

[Stroker Ace Ventura]

Yeah, sorry. I'm not well-versed in the LS platform so I'm useless there, sorry plenty of folks here are though...

 

[Stroker Ace Ventura]

how do you bump up against compression

I think he means while turning it over by hand, not with the starter. You know when you reach that point of a completely sealed cylinder and the crank won't go further by hand unless you rail on it with a monster cheater or breaker bar... Correct me if I'm wrong, Ken @unstable

 

[Stroker Ace Ventura]

@PldBryan , Let me ask, do you have all plugs out when attempting to spin the engine over past 270°? IF so, not a compression issue, would have to be a mechanical issue by interference either in rotating assembly or by obstruction in a cylinder.

 

[Stroker Ace Ventura]

I was making fun of the comment not looking for an answer

there are 8 cylinders. 8 compression strokes for every 2 turns of crank
how is compression stopping it from turning at a specific point but has no problem elsewhere

I get it. Sorry, kinda early to be thinking clearly on my coast took the day off and still woke up at 0430.. I missed the rhetorical content of that UGH. What do you think could be the issue given the information we have to work with? I know that's asking a lot considering how little we know...

 

[Stroker Ace Ventura]

Yep, plugs are out. I know there isn’t a ton of info, kind of a shot in the dark. I plan to start tearing into it today hopefully.

Have you turned the engine over both CW and CCW? same 270=/-°? If you start tearing into it, I would start with what you worked on last and work your way backwards. Maybe take off the rocker covers to watch for interference...

 

[Stroker Ace Ventura]

Not missing a 10 mm socket are you???

Okay, who here ISN'T?!?

 

[Stroker Ace Ventura]

Probably won't hone out on that one... Sorry, that sucks!!