#84818, "Built motor from head up and have Rod Knock"
I just spent pretty much all my cash on... a new head (ported and polished) crane cams crane valve springs pt lifters complete gasket set new SS valves complete ignition tons more
and today after 9 months, i got my license and went to fire it up and it sounds like the worst rod knock ever. I have videos with sound if you want. I'm trying to figure out what a shop would charge to do a bottom end rebuild or if i should just try to sell it as is and get a newer talon or something else. I did all the previous work myself, how hard would it be to install rods and pistons?
#84830, "RE: Built motor from head up and have Rod Knock" In response to Reply # 1
You may want to pull your valve cover and check to see if all your valves are still there. You may have dropped a valve like grain did.
I always double check the valve keepers when I get a head back from a machine shop. I have found a few keepers in the past that were not seated properly. And this has happened from some reputable machine shops that specialize in race engines.
#84831, "RE: Built motor from head up and have Rod Knock" In response to Reply # 2
Yah, I checked that last night, we looked everything over twice. It made this sound before the head rebuild, it sounded like bad lifters, so I replaced it all and it still sounds like that, my Talon expert said Rod knock. He's been right about everything so far. Is it even worth trying to sell the car? Its got almost everything brand new and upgraded expect the block, pistons and rods.
#84852, "RE: Built motor from head up and have Rod Knock" In response to Reply # 4
Pull the oil pan and see if one of the bearings spun. It is not that hard to do and only takes about 1.5hrs to take apart and put back together. On a side note, I had a friend who had what sounded like rod knock in his 99gs and it turned out to be carbon deposits.
#84945, "RE: Built motor from head up and have Rod Knock" In response to Reply # 6
Originally posted by sike If all you did was head/top end work, why do you think it is rod knock? I don't get it.
and if it made a bad noise before all the headwork, you should've found out that it wasn't the lifters or any drivetrain for that fact, and rebuilt the bottom end instead.
I eat emo kids for breakfast
1995 Eagle Talon (SOLD) 72' SuperBeetle 72' Standard Beetle 56' Deluxe Beetle
#84946, "RE: Built motor from head up and have Rod Knock" In response to Reply # 6
Did you start the car for the first time after 9 months? After sitting long priods of time its wise to prime the oil(turning engine over without actually starting it)If you started it right away oil may have not made it to the journals. This is just a possibilty.
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