abdywgn
dismantler
wasn't me that put it together but that was what happened.There is a funny story. Being the b motor distributor is .300 shorter ....aka the SB is .300 longer than a 383 distributor.
Love the net.
wasn't me that put it together but that was what happened.There is a funny story. Being the b motor distributor is .300 shorter ....aka the SB is .300 longer than a 383 distributor.
Love the net.
Yes, pulled the engine on Saturday. 7 of the 8 pistons were damaged but luckily the heads still look good and none of the cylinders appear to be hurt. The short block is at the machine shop. As long as the bearings all still look good and check out I'll just be putting in new pistons and rings. Probably go with a little more ring gap this time.Are the heads off of this engine yet?
I like this thinking, the stability is based on the ring spread and skirt..keeping it squared in the cylinder...so if that isnt compromised...good idea.View attachment 1715423252 Any pics of the pistons? I’m just curious. Any broken ring lands? When you order pistons, ask the manufacturer to drop the rings .100 if they can for more strength in the crown. Most will do it for a small charge and it’s good insurance. And on the gaps, there’s a good saying. Gap em to large and only you will know. Gap em too small and everyone will know.
No updates yet. Waiting on machine shop. Apparently everyone wants there junk fixed this time of year.Walker any updates?
Yes, pulled the engine on Saturday. 7 of the 8 pistons were damaged but luckily the heads still look good and none of the cylinders appear to be hurt. The short block is at the machine shop. As long as the bearings all still look good and check out I'll just be putting in new pistons and rings. Probably go with a little more ring gap this time.
Thanks for that real world advice. What was the combo? Were you running boost?View attachment 1715436265 View attachment 1715436266
I just had the same thing happen to me, ring popped a chunk of piston off, piston chunk smashed the plug. Make sure to look over your heads good, the exhaust valve in that cylinder had bent from smashing piston chunks between the valve and valve seat. It looked okay and I was about to call the heads good. Spinning the valve in a drill is an easy way to see if it's still straight.
N/A 360/904, worked magnum heads, 11.2:1 static compression. The KB pistons I was using are know for needing a bigger end gap on the top ring. I suspect with you running boost your rings might've been too tight or plugs too hot or a/f did something weird or a combination of it all and detonated. I gapped this next set of rings slightly larger than the KB recommended spec, hopefully no more worrying about it and gives me room for a power adder later down the road if I want. Hopefully I can finish getting it back together now the fall semester is over and I'll have time to work on things.Thanks for that real world advice. What was the combo? Were you running boost?
Got it thanks. Yeah this time around I'm giving it a little more ring gap. I think too hot of plugs and too much timing to start out were my culprits. Hopefully I've learned my lesson. I don't think I screwed up on the air fuels though. Let me know if you ever get to Nashville and I'll let you know if I ever end up racing in Memphis.N/A 360/904, worked magnum heads, 11.2:1 static compression. The KB pistons I was using are know for needing a bigger end gap on the top ring. I suspect with you running boost your rings might've been too tight or plugs too hot or a/f did something weird or a combination of it all and detonated. I gapped this next set of rings slightly larger than the KB recommended spec, hopefully no more worrying about it and gives me room for a power adder later down the road if I want. Hopefully I can finish getting it back together now the fall semester is over and I'll have time to work on things.
I'll have to make a trip down I-40 and come see your car race sometime, looks like a pretty cool build!