VLS1

Pretty lucky that valve didn't break

dogsballs

Think something small broke off, as there are some marks on piston looking through plug hole and plug strap pushed in. Nothing came out exhaust port thankfully.

speedtigger

iTrader: (16)

Damn. Not enough P to V?

3pedals

iTrader: (3)

Did it run at all? Hope there isn't any serious collateral damage.

Doug G

Damn, that blows.

At least it was at idle and not 7000+

ZONES89RS

iTrader: (25)

Damn, was really wanting to see some bad *** results.
Hope you get lucky and it's a easy fix.

dogsballs

Ptv should be fine as i rotated it by hand checking the lash for couple hours when we swapped out pushrods and its only one valve.

It ran for 30-60s but wouldn't idle due to a big air leak.

It will be back

VLS1

Maybe it did break the valve after all.

My thoughts also.

That may often work for a mild cam deal, and only one tends to break in these situations. Hopefully it doesn't look too bad when you remove the head.

dogsballs

Engine fully stripped down, block and bearings all good. In process of fixing some things and probably do some upgrades while its apart.

3pedals

iTrader: (3)

What's the valve and head look like?

dogsballs

Heads are getting fixed. Pistons replaced

dogsballs

On closer inspection block was a little beat up, but all square and round now. Bores torque plate honed 0.005", bore 1 had a 0.003" taper :o . Evidence of main caps walking, so arp main studs added and align honed

Car out of storage and cleaned up. Lot of cutting and polishing

madmike9396

iTrader: (29)

I'd be looking at those 60 ft times 1.4x isn't all that good in a 2600 lb car imo

dogsballs

This will be a bit heavier, 2900-3000lb. These aren't like a fox body that seem to kill 60fts. Holden commodore platform rarely get into 1.3x territory.

backintrouble

any updates?

dogsballs

nope, waiting for some main studs.

very frustrating

dogsballs

Heads back from the grave, after 2 lots of welding. Possible assembly by end of week

speedtigger

iTrader: (16)

I am anxious to see this thing lay it down. Sorry about your luck on the first time around.

dogsballs

It happens. That mess was only one cylinder, lot more than that.

Engine builder is really keen as well. Dummy fit of the +9cc domed pistons with the small 54-56cc chamber, looks like pistons will fit without too much play, so possible 14.x:1 comp. Means we can really lean on it, especially with confidence in all areas top end and now bottom end. Lot of little oiling mods to crank and block also been done. The benefits of an engine builder that does all his machining and even head work.

backintrouble

also looking forward to seeing this pull some numbers. good luck!