I thought he was using .904’s. Not certain though.

There were a few were tight. I did not know why and mentioned it to my engine builder , I thought maybe the bores were too tight. I wanted to order replacements but you know Covid and none available. He never mentioned it again so I figured all was good.



Mike the burned out piston was opposite of the lifter problem .. so I`m not sure if one was cause and the other affect or if it all went at the same time. On my data log I see the even when the piston broke, boost went from 4 to 10 psi in a split second as did the intake temp. Combustion in the intake. That was at 3700rpm, I heard something weird going, smelled something weird .... a minute later at 5500 rpm is when it started to sound real bad so I shut it down. Maybe thats when the lifter went .

Yes sir Dart BIG M

Great ! I was passing my buddy in a 39 TG lol

Eddie says he hardly ever goes richer than 12`s at wot . I like low 11s . No way am I "washing down cylinders" at 11. unburned fuel at 6000rpm , I don`t think so . When I first got the boat it was in the 9`s and yes the bores had a mirror finish, cross hatch gone and they smoked lie a choo chooo train.

.842
I`d like to upgrade to the .904s but I`m not sure what kind of machining is involved with that .. I`ll find out later today when I take my engines in. 55mm cam and 904 seems like a good combo to me but probably over kill??
I spoke with Ron Iskandarien and he recommends a roller lifter with the Johnson body . Didn`t think I needed bushed.

One problem with Holley EFI is it`s way too easy to make changes . I need to stop messing with the tune .

Do yourself a HUGE favor and deal/talk to thee Rick Iskenderian you'll be glad you did ,if you need his cell # let me know .

Most typical failure mode is needles from a failed lifter traveling through the engine. I think you could run the bushed lifter until something starts clattering and then you’d just need lifters and maybe a valve job. With your iron heads I’m assuming you’d never get a seat beat into the head either.

Anecdotes I’ve read are that lash never moves if everything is happy. On Cat machines we run 2500hrs between lashes 😂

FARG!!!!

That sucks.

I talked with Ron, guy knows his stuff. I don`t think they have a .904 lifter however .

Dropped off the engines today, machine shop says they machines bores to .904 all the time not a problem so that`s the route I want to go.
the cam is $hit so need a new one anyway , just not sure what all has to change to run 904`s . Can I run the same cam specs? I assume new pushrods?

Rick just sent me 2 sets of 904 Red Zones , told me get rid off all the cases of Brad Penn 20w - 50w and dont use it anymore the new formula since they were bought out he stated they tested and garbage ,,, Bob Teague mentioned the same thing ,so no more Green Oil