355 build
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
my contribution here today on this thread was to stop the nonsense on a locked down distributor , it doesn't melt pistons or burn a hole in the center or knock the ring lands off of the piston and 36 degrees doesn't cause un burned gas in the manifold ..but .. it can be hard on starters , the suggestion on the kill switch to crank over engine and then flip the ignition on was spot on and my suggestion on a MSD box having start retard for a locked down ignition was good too .
Still confused ?
Still confused ?
However, Go ahead and experiment, if you wish. Progressively retard your ignition timing at idle and see what happens to your exhaust manifold temperatures.
unless the intent is to run WOT for prolonged periods of time, ie circle track racing, running with locked out timing is not ideal for street driven automobiles.
I run 36* of timing at idle. That is WITH vacuum advance however. Also run 51* at cruise, combo of mechanical, vacuum and initial.
since vacuum is not developed until the engine starts then all the starter has to deal with while cranking is initial timing. No need for clever work arounds to get the timing you want for max power and starting. All you need is there. It may need tweaking for your cam, intake, CR, rear gear, etc.
I guess I’m not seeing the advantage of SET ignition timing for an engine that runs under VARIABLE conditions and rpm’s.
If the op wants to run a locked timing though that’s his option.
Last edited by REELAV8R; Aug 1, 2022 at 05:54 PM.
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Opinions all.over the place here so let me see if I can get caught up..yes 4 valve relief forged trw L2256 .30 pistons, these puppies have been in 3 engines in past 25 years still going strong..
really don't care for maintaining lash on this engine, just want to set it and be done....
really don't care for maintaining lash on this engine, just want to set it and be done....
Solid roller lash adjustment is more of a check when you use Allen locking rocker nuts along with a stud girdle. I'm also running .010 and .014 lash these days so they are quieter and don't beat up stuff. Valve float is a thing of the past.
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
