Hello Guys,

After health failure, cars failure, now my engine failed...

Almost finished the tear down : broken valve spring retainer (front intake), valve almost falled into the cylinder (the seal catched the grooves), the valve bent, broke the guide wich fall into the combustion chamer, to finish into the squish area of the head...

I know head can be rebuild, but I guess it's the good time to go 110", with ported head and new cams.
I need some advices for the cams, I like what Durwood get when he tune CR595 cams, but i'ld like the torque curve a little more on the left. Maybe a TMan 585 ps ? (I don't want the HP still climbing at 6k rpms).

 

That sucks! I can't help with the cam selection but you've got my best wishes.

 

Thanks for the update... These pictures are super clear and informative! Looking forward to see what direction you choose.

 

Makes you cry a little when an "insignificant" little $5 part takes out your engine. I lost a DOHC V8 once when a cam chain tensioner shoe crumbled. Chain jumped a tooth or two and smashed all 32 valves and 8 pistons. Heads were not repairable and one cylinder sleeve was gouged. $8,000 repair for a $20 part failure.

 

Looks like you lucked out, OP. Minimal damage to the motor. No hole in the piston or shrapnel in the lower end. If it was mine I would buy a new piston, ring set, gaskets,and send the heads out to a reputable shop & have them ported & install a new set of valves,springs, retainers & keepers. That little divet in the head from the broken guide can easily be filled & machined by a competent welder. If the cylinders are in spec they can be honed.

 

Hey Frederic happy to hear that you're on the mend but sorry about the engine! I'm here for anything you need shipped as usual my friend, good luck and can't wait to see what you do!

 

Sorry Frederic for the temporary hijack, but ROBBYVILLE, you're back??? I thought you sold your SB and retired from the forum life??? I see the latter hasn't happened, but what about the bob? Nice to see you posting again!

Edit: I see it sold. Oh well, I was hoping... Guess it'll give us more interesting reading when you get back on the horse!

 

I'll take a guess... Either a 4.6 or 5.4 liter Ford modular?

Unless it was an LT5... (drool...)

 

Ford/Jag AJ 3.9 in a 1999 Lincoln LS. It was an unusual failure that I think was caused (or at least exacerbated) by a long series road course runs. It was on the track for nearly 8 hours with only driver changes one day. I drove that car hard. The tensioner shoes were the same orange plastic our early TC88 cam shoes are made of. The failed shoe wasn't worn badly so I suspect heat played a major role.

 

Wow, that's a looong track session!!! Four more hours and you've got Sebring!