Frosty93

Hello I have a 93 Prelude Si automatic. It jumped time and bent some valves. I bought a new head and replaced while had head off was able to rotate engine to check cylinders which were good but when torqued head down, engine won't rotate by hand or breaker bar on crank bolt. Tried taking off the timing belt and rotating it and it still wouldn't move. I need some advice on this cause I am wanting to get it running quickly.

Thanks in advance

InvaderTrax

Are the cams installed but the timing belt off? If so it won't move because you're trying to push the pistons into the valves, which you've already done once

Lude Acts

Hahahahahahaha ROFL. Sorry. That was funny.

Frosty93

LOL that was funny but I have them outta the head so I shouldn't be hitting anything

Acidcrakker

I dont know, man, there are only so many things it could be. Sounds strange to me.

duanes

If you have cams out and spark plugs out, either the block is seriously warped (it would take a lot to seize the crank, I think) or maybe a broken rod jamming the crank.

If possible, you might drop the oil pan and see what the bottom end looks like.

Frosty93

Plan on doing that today to check it out. I am wondering if I could have over torqued something but that was all on the head and cam keeper bolts so the head is all that is left so shouldn't be any problem there right??

spoolinlude

Did you accidentally leave an "alignment tool" in the cam -- aka small allen wrench, to hold the cam in place while you put the belt on? Did you remember the head gasket?

Trust me, I've seen stupider **** than that.

DCFIVER

Did your head come with cam caps or did you resuse your cam caps from your old head??

Frosty93

the head came with cam caps

Frosty93

Didn't leave any ailignment tools and have the head gasket on. Sad part is I had to double check today lol. I took the pan off and the bridge piece and was still unable to turn it. I had to loosen all of my rod bolts to finger tight and then I was able to rotate it with a screw driver but didn't try by hand. I am wondering if I need new bearing or if it is something else. I do have a new crank but I really don't want to remove the engine to replace it. If I have to I will. Give me some info PLEASE

duanes

Maybe the crank is bent.

snobordboy

Do you have cams in the head? If you do not have cams in, all of the valves will be up (sealed) in the head. If this is the case, and you have spark plugs seated, you have nowhere for air to go, and shouldn't be able to compress it, so the engine will be nearly impossible to move I would think.

When you say you back the rod bolts to very loose, this may give you some gap for air to move, allowing the pistons to move.

Just my thoughts from what I read. If this sounds right, try taking the plugs out and giving it another shot.

Frosty93

All that is happening is with the plugs removed so I have places for the air to go. I am probably just gonna remove engine and put in the crank I have cause found out when trying to rotate I ended up stripping the bolt on end of crank. I would just retap and use different bolt but have another crank sitting here so will use it. Also I will have to remove tranny with engine in this car or can engine be romoved with out tranny coming with it?? Sorry I am used to larger engines, but it looks and seems like I will have to remove both of them. If this is the case then I will also do alittle bit of tucking on engine bay and probably clean and paint engine also change out a few bushings and what not that I can.

Thanks for help and more is always needed