The 1BA block Mystery What's the Story ?

[Ronnieroadster]

Originally Posted by Ron_r1959

Ronnie, Out of curiosity, are you wanting the 1BA without replaceable seats for a another highspeed car application? If so are you afraid of the seats coming loose for some reason or had trouble with it in the past ? Just curious.

Yes that's exactly the reason I'm using only the blocks without exhaust seat rings. In 2019 I experienced a valve seat failure on my primary race engine
in the pits at Speedweek. Thankfully the failure happened during setting the timing. If the seat failure happened during a run the results would have been
really bad causing a complete loss of the entire engine.
Ronnieroadster

[Ronnieroadster]

Originally Posted by Bored&Stroked

Hey Ronnie - I'm out of town for a few weeks, when I get back I'll check a few 49-53 blocks that I have and see if any are 1BA. I don't know the details on the later blocks - might as well explore and see what we can learn. Take care, give Laura my best!

Hi Dale
Time to get into the late stuff when your back let me know. There's only 11 months left before Speedweek so time is running out. If your back in time are you heading to Hershey?
Laura says Hi