alright i am building a lsvtec and i have a gsr crank yeah i know stupid but anyways, we get the crank in and it's not spinning freely. like it actually takes 2 people to turn the crank over. anybody know why this is happening and any way to fix this. any help is appreciated

 

put the right size bearings in and plastiguage it next time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbociv &raquo;</TD></TR><TR><TD CLASS="quote">put the right size bearings in and plastiguage it next time.</TD></TR></TABLE>

there is plastiguage in it, i put gsr bearings in there, i just ordered gsr bearings, should i be running ls bearings?

 

if you are running a gsr crank then you need to run gsr rods with gsr rod bearings. I believe all main bearings are the same between b series. The big ends are different sizes between ls rods and gsr rods.

 

i have gsr rods and gsr rod bearing, the crank is not spinning just sitting in the block with no rods hooked up to it

 

if you plasiguaged it and all your clearances checked out then there shouldnt be a problem. What do you mean theres plastiguage in there??? I hope you didnt leave it in there.

 

no i didn't just leave it in there. i guess i will just pull it all back apart and go back everything again

 

then make sure that you are not over torqueing it. was the crank checked out by a machine shop for imperfections?? Are the main caps all faceing the right way?? did you use plenty of moly engine assembly lube?

 

the crank isn't even torqued down, i bought the crank from an import shop that i do all my business with so hopefully they didn't **** me with a **** crank

 

hmmmm, so you are saying that with just the crank sitting on the engine and the caps on but not torqued, you cant spin the crank?? I think maybe you need to measuer all your main journals(plastiguage) and make sure that clearances are good. If they are still good after torqueing the main caps down to spec then maybe a bent crank??? unlikely but you should still have the crank checked out. Noone just parts with a crank unless something happened to the rest of the engine(ie hydro lock).

 

i will go through everything again and check **** out. the crank could of come out of a blown motor, but i will talk to the shop i got it from. thanks for all your help man

 

Do you have the main caps on finger tight? I did the same thing couldn't turn my crank with the caps finger tight. You have to torque them down than the crank will spin freelly.

 

thats wierd, but i will defenetly(sp) try it. thanks

 

do those pistons even make it to the deck of the block? They shouldn't cause with a gsr crank the stroke is shorter than that of an B18A/B. Unless you decked the block by a few mm.

 

as far as i know the block is decked. the guy that did my machine work knew that all gsr internals were going inside the block

 

What brand of main bearings are you using? If aftermarket, look on the back side of them to see that they are not an oversized bearing (it will be stamped on the back.
If the bearings are proper, you either have a severely bent crank or you have have a block that desperately needs an align bore or maybe you have a Prelude crank
You should almost be able to see where the binding is taking place if the crank will not spin with the main caps off. Is it possible to install the crank in another block to check it out?

 

yes the bearings are aftermarket, i will have to look at it tomorrow, i am at my apartment and my motor is at my moms house. i have another ls block, i could try it in that and i hope to god it is not a prelude crank, the shop i got it from will have a new *** handed to em if it is. thanks for all the help guys

 

also something to keep inmind is it possible to put the caps on backwards? do you have the pistons in? maybe the pistons are too tight.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtec hatch05 &raquo;</TD></TR><TR><TD CLASS="quote">the crank isn't even torqued down, i bought the crank from an import shop that i do all my business with so hopefully they didn't **** me with a **** crank</TD></TR></TABLE>

This is most likely why it is not turning. The bearings are not perfectly round until is is fully torqued. I hope you are not trying to turn that crank dry.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jim Truett &raquo;</TD></TR><TR><TD CLASS="quote">

This is most likely why it is not turning. The bearings are not perfectly round until is is fully torqued. I hope you are not trying to turn that crank dry.</TD></TR></TABLE>

no we are not trying to spin it dry and there is no pistons or rods connected to the crank. it is just the crank sitting in the block right now

 

This is most likely why it is not turning. The bearings are not perfectly round until is is fully torqued. I hope you are not trying to turn that crank dry.[/QUOTE]

my h22 crank spun before it was torqued down. just thought i would add to it.

 

my crank doesn't spin freely, but it doesn't take two people either, its just kind of hard to spin, i can counter this by just using the counterbalance to pull on it and after it gets started it spins nicely. i haven't torqued down the caps because im waiting for my endyn girdle to come in. i think i will just go ahead and loosen all of the cap bolts and then tighten them all down to spec, and then retighten the 6 that will be replaced with the endyn girdle and gsr bolts.

 

scratch my name off the problem list, turns out when you take a bunch of meds to fight a kick your *** kind of cold, your judgement becomes impaired. i put the caps on the wrong way, everything is golden now