EGR and Detonation

[Lawnman23]

Hmmmm....then it wasn't a q-jet....It was a 2bbl with the same name as a q-jet...I forget the name....I was just 17.

Most likely was the 2bbl Rochester Varajet carb.

 

[50yr Street Mech]

BINGO !!! A Rochester 2bbl....The neurons in my brain just made a connection I could see it, just couldn't make out the name of it. Thank you soooooooo much Lawnman23 !!! Yep, the 80's most certainly fried many connections in my head...LOL

 

[Exhaustgases]

We also don't use EGR on our large industrial units. SCR is sufficient for NOx reduction and has superior reliability vs EGR.

We were able, in testing, to create conditions where it was condensing acid in the intake manifold. Turns out that the moisture in EGR plus NOx is a pretty bad combination for hot ferrous bits.

SCR has a lot to recommend for large industrial engines where long life is still expected.

Yeah not all are as smart though.