So my wife had to my car yesterday. (the last time she drove it was in Jully) She said the car has no power, no big deal the has only 70ish hp at the crank. So I drove it last night at first it sounded like the rocker arm's just needed to be adjusted. Driving for half a block then a new noise came in. This was also a 45sec drive so I came back home and it is defently coming from the engine. Well I check the rocker this morning and they were all ok. My oil is not metallicy the pully seams to in work order like nomal. So eny one have eny idea's on what this could be.
Stuck wrist pin. I've had this happen to me twice now through some crappy circumstances. A stuck wrist pin sounds like rockers tapping but it's actually the piston skirt getting tapped onto the cylinder walls.
Try to add some kind of oil treatment to help loosen it up. If that doesn't work you may need to replace the piston, as it was likely over heated by running lean or something. But seeing as it is air cooler, there is also the chance that the block is distorted from overheating.
typical ACVW (and corvair) noises which sound like clicks and/or taps:
rocker arms requiring adjustment
hydraulic lifters not pumped up (internal springs getting weak and/or oil inlet holes becoming restricted by crud) (maybe corvair only, IDK if ACVW use hydraulic or solid)
exhaust leaks at manifold to head interface
burned exhaust valve
good luck. please remember to post what you find.
.006 is what I have the all the value's are at. it sounds like the noise is coming from the bottom end.
Well it has solid lifters, so we can rule that out.
Sounds to me like either loose head nuts or a broken ring - both will make noise uninterrupted.
Rod noise usually is more pronounced when coming off the throttle and the main bearings mostly sing their death song under load.
You can re-torque the head with the motor in the car. I'd start with that. A broken ring obviously means that the motor comes out and probably new pistons and jugs.
Loose heads was a problem, mostly later models,
Re-torque the head and readjust the valves.
At least it's a start.
I think its the heads dont remember the last time they the torque'd (I dont have a torque wench yet) its one of those I alway mean to buy but always get side track'd. I know a guy and I'll see if he can look at it later.
thanks for the heads up on what to look for. it did sound aliitle better after redid the values
Careful with the retorquing. ACVW's have a low torque value (usually around 25 foot pounds) and it's tempting to jack it up a bit. The problem: if the studs are torqued to 45 foot pounds as the engine heats up the heads and cylinders expand faster than the studs meaning your 45 FP is now closer to 80 or so. That means it'll pull the threads out of the cases.
Something else you can try: pull the plug wires one at a time while the engine is running. If the noise decreases markedly when you remove a particular wire, that cylinder has something wrong. Unfortunately, that something is generally a connecting rod bearing. :-(
You might have blown a spark plug out of the head, the spark plug wire check will validate this problem
Check compression if all the easy stuff passes, will tell you if rings are bad, broke rod, holey piston, loose/warped head.
Your wife didn't happen to overheat it did she? I'm not saying anything about your wife's driving, my wife hates driving ACVW's and wouldn't pay attention.