rod bolt hitting the crank case....

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 2:16 am

so i got my whole motor back together and then i notice that the #2 rod is hitting the crank case, and i have no idea what i did wrong. all the marks on the rods were faced the right way. the caps were correct. everything was the way it should be at least i think it was. anyway no i am so frustrated i cant stand it. any insight as to what i did wrong will be greatly appreciated. thanx

scuzzy · Post by **scuzzy** » Mon Apr 10, 2006 3:36 am

thehookeup wrote:so i got my whole motor back together and then i notice that the #2 rod is hitting the crank case, and i have no idea what i did wrong. all the marks on the rods were faced the right way. the caps were correct. everything was the way it should be at least i think it was. anyway no i am so frustrated i cant stand it. any insight as to what i did wrong will be greatly appreciated. thanx

the hell?

I didn't think that was possible.

are you sure the bearings are seated right, the caps torqued to the right spec? it shouldn't even come near whacking the crankcase.

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 5:17 am

yea its true, the bearings are correct, and everything was torqued to spec, i have no idea, i am totally baffeled, ill take pics tomorrow and show all of ya

BAC5.2 · Post by **BAC5.2** » Mon Apr 10, 2006 3:04 pm

Is the piston in the correct way? If the pin is offset in the wrong direction, I bet that would let the rod touch the case.

That's trippy!

Could have been manufacturing error, but that sounds extreme. Take pics of the other, correct assemblies, as well as the FUBAR one.

It's gotta be something easy to overlook.

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 5:08 pm

yea i am heading out to the garage here in a few minutes, ill take pics with my phone, haha. but even if i piston is in there incorrectly its still not going to change the length of the rod or bolts of the rod. the only thing that i could think would change anything would be the crank. but it is turning freely untill it hits the case. oh well give me like 3 hours and ill have a up date.

It will prolly just be my retardedness.

206er · Post by **206er** » Mon Apr 10, 2006 7:16 pm

is this a motor that was running and you pulled apart to rebuild, now this is happening?
wrong bearings maybe?
wrong bolt that sticks out too far?

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 7:34 pm

yea. i pulled it because it blew a head gasket. and i thought about just replacing the haead gasket, but i got the bug, to do go all the way with it. well i just pullled the crank case apart a few minutes ago and the bearing were correct and didnt spin. everything was torqued to spec, i am totally baffeled, i have no idea what the hell happend.

i am mega pissed cause now i have to buy a whole new gasket set.

i did notice that the piston (#2) was not coming all the way up to tdc

Post by **DLC** » Mon Apr 10, 2006 7:45 pm

Could the cranshaft be in backwards? Is #2 the only one not coming all the way up to TDC?

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 7:52 pm

how could a crankshaft be in backwards?

206er · Post by **206er** » Mon Apr 10, 2006 8:09 pm

yeah there is a small difference in size between the rear main seal and front

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 8:40 pm

no. the front main seal is like a 1.5 inches and the rear is like 4 inches.

BAC5.2 · Post by **BAC5.2** » Mon Apr 10, 2006 9:46 pm

Not to mention the key on the nose of the crank, and the flywheel on the butt of the crank.

What pistons and rods did you use?

If it was a manufacturing error, you might get the cost of gaskets back? Though you should have spec'd and checked everything before assembling it (is what they will say).

thehookeup · Post by **thehookeup** » Mon Apr 10, 2006 9:53 pm

yea i blue printed it before i put it together. i used the stock pistons and stock rods, there is nothing aftermarket in the bottom end, what came out is being used again. tomorrow i am going to measure and blueprint again. and then well see where im at. its not a manufacturing error. i know that. who knows. ill get back to ya all asap

thehookeup · Post by **thehookeup** » Tue Apr 11, 2006 3:10 am

well i blue printed and measured everything again, and it all works. so tomorrow i will be putting the crankshaft, rods, and pistons tomorrow morning. and then i will give another update on my unfortunate delay in a running car

BAC5.2 · Post by **BAC5.2** » Tue Apr 11, 2006 9:20 pm

How did it go?

thehookeup · Post by **thehookeup** » Wed Apr 12, 2006 1:22 am

all went well. its perfect. and i did the same thing that i did before. except i torqued the main bolts to. 34 instead of 36 ft lb, but it should have not made that big of a difference.

Not to mention it was only the #2, that was not coming all the way to TDC, and the rod bolt hitting the case.

I still dont know how this happend. the rod when i pulled the crank back out was torqued correctly. and nothing was out of order. the crank bearings were fine. all the other pistons and rods were perfect.

the only thing that i could possibly think happend, was when i torqued down the head bolts is that it distorted the block, but there is no way that it happen , just no friggen way.

if anyone has any idea. how this has happen. i would love to hear it. even tho its all good now. i still dont know. oh yea there was no rod or crank bearing damage.

its done, and the new gaskets should be here tomorrow, and the whole thing should running on thursday. that is if my intercooler piping hurries its ass up and gets here

Post by **DLC** » Wed Apr 12, 2006 5:04 am

Weird.

BAC5.2 · Post by **BAC5.2** » Wed Apr 12, 2006 8:54 pm

That is REALLY weird. It was broken. You took it apart, put it back exactly as before, and it was fixed.

Wow.

sammydafish · Post by **sammydafish** » Wed Apr 12, 2006 9:08 pm

where was the rod hitting the case? You didn't take any photos did you?

thehookeup · Post by **thehookeup** » Wed Apr 12, 2006 9:28 pm

i originally pulled the motor because it had a bad head gasket, so there was nothing wrong with the bottom end. and when i took it apart and replaced the bearings, it was hitting the case between the #1 and #3 cylinder.

i took it back apart and did everything that i did before and then it was fine, only this time i torqued it to 34 instead of 36 ftlb.

yea i took a pic or two. ill post them later today. for now i gotta put this damn thing back together and back in the car. ill update tonight.

scuzzy · Post by **scuzzy** » Sun Apr 16, 2006 2:27 pm

thehookeup wrote:i originally pulled the motor because it had a bad head gasket, so there was nothing wrong with the bottom end. and when i took it apart and replaced the bearings, it was hitting the case between the #1 and #3 cylinder.

i took it back apart and did everything that i did before and then it was fine, only this time i torqued it to 34 instead of 36 ftlb.

yea i took a pic or two. ill post them later today. for now i gotta put this damn thing back together and back in the car. ill update tonight.

I don't see what 2ft/lbs has to do with it.

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rod bolt hitting the crank case....

rod bolt hitting the crank case....

Re: rod bolt hitting the crank case....