i just installed a turbo kit on my xb and is having engine problems. I think i spun a rod bearing.. i was wondering how do you take the time chain off.. never had to deal with a timing chain before..

 

I have an extra xB motor in my garage, I will look at it tomorrow and see how to get the chain off.

 

OK i looked into it a little bit more..... Its not a bent valve or anything to do with the valves i think.. I took the small oil pan off and there is small chunks of aluminum in the oil. i think they are parts from a rod bearing. I need some help thou i cant get the crank case/ upper oil pan off to see the connecting rods. I removed all bolts. I was wondering if there is a couple bolts holding it on on the transmission side. Mine is an auto. Can you remove the lower crank case/ oil pan without removing the transmission?? I havent messed with the timing chain yet

 

I have a motor in my garage like I said. I didnt get a chance to look at it. I got pretty busy. But the only thing wrong with it is the rings. So if you need anything off it let call Ambers phone and see what we can do.

 

Thanks bud.... Ummm so yeah i dropped the lower crank. Nothing is wrong with the rods and bearings. So the only thing left that can be making the noise is the valves.. It must be a bent valve or a stuck valve... im going to buy forged pisons and rods. might as well build the lower end to run 15 psi

 

are you running any engine management??

 

yeah....... just didnt get it tuned right away.. I messed it up.. I think it pre fired. cause what every happend..

 

thats probly pieces of your pistons in there. that motor is done.

 

well i found the problem.. I found the aluminum pieces went... after removing the head and pistons.. number one rod was bent and twisted. thats what caused the noise. the bottom of the piston was hitting the crankshaft counter weight...

 

That blows. Sorry to hear that

 

How much boost where you running?

 

9 psi.......

 

All I can say is "BOOM". 9 psi without engine management> I am with ***** on this one; I think the piston rings and/or piston is cracked.

 

detination. happens when you dont know what youre doing

 

Time to pick up a used $350 motor and replace it like I had too.

 

engine is good and i was using an engine manangement. it just wasnt tuned... everything is good just need new piston and rod.. cyclinder walls mic check good. i order 75mm bore 8.5 compression ratio wisceco pistons and forged 1" thick piston rods. so i will be able to run 20 psi. im sending off my cams to get done with valves and springs. i know my tranny will not hold up to the power..

 

i would love too see a xb motor on 20 pounds of boost. whos gonna build it?