Thread: Blown headgasket

Originally Posted by DEFENDERZOOK

they are all like that.....its normal....



and whilst you have the heads off....get the valves lapped in as well if you are
not getting the heads serviced.......

The heads have only just been reconned judging by the cleanleness of them compared with the rest of the block.
Dont get me wrong it dont look like the bottom of a dried up lake but I can see down the side of the top of the piston and see the rings, also on 1 half of the top of the bore where the ridge is is clean, the other side is black with carbon. Why u ask because there is that much piston clearance there was piston slap.
I now have a delema do I rebore and fit new 20 thou rover pistons, or do I rebore to suit the pistons and crank I have already that is a 4.2 stroker in my shed? As this is my sons car that I gave him I am trying to help as a dad. I also have a brand new reconned 3.9 complete long motor sitting in my spare room ready to fit. So do I give my son the 3.9 and keep the 4.2 for my original untouched 3.5 currently running in my 89 vogue on gas that will need repowering soon.
As I said I have a delema and I dont want to be a meanie.
There is another option as well.
I also have a buick 300 crank brand new pistons and rods complete with flywheel and harmonic balancer, this will give app 4.3 with a 10 thou over standard bore.
I will have to think about it for a few days
Brad

Mornin' Bradtot

not so much a dilema, as plenty of options

how much are you willing to spend,, on HIS car?

dump the 3.9 in and get him running?

or rebore/rebuild it as a father/son thing?

if he's never seen the inside of one, this last option might be a few lessons rolled into one---