well i bought a block off line and it was sleeved by darton, so i took that and my crank and accesories to the machine shop to be fitted and put together

well i get a phone call today and the machinist tells me

" A couple of your mains seem off" so i ask him what he means

and he tells me " When i spec'd you bearings, you dont have side to side play(as in thrust) but front to back play"
I reminded him that the crank was from a different block

he then says " Your main girdle seems to be a tad larger round than your main journals are, and when i put in a different bearing size, there is a lip of .003 on one half of the bearing where it meets up to the other"

so i ask, if a line bore and larger bearings will fix it

he says, "Probably not, you should buy a new main girdle, or a new block"


i honestly cant believe this crap is happening. will aligh boring and going to a larger bearing be an option for me?

has anyone seen this before?

what else can i do, i really cant afford another block, and whos to say this one will meet up? should i buy a brand new girdle?

I HAVE ATTACHED A VERY CRUDE DRAWING TO HELP EXPLAIN







Modified by mrbsponge at 11:53 AM 5/3/2006

 

This seems very odd. But 3 thou is kind of alot. I dont see why an align bore wouldn't fix it. Did you ask the enigne shop about that?

That pic is too small to see the text.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">This seems very odd. But 3 thou is kind of alot. I dont see why an align bore wouldn't fix it. Did you ask the enigne shop about that?

That pic is too small to see the text.</TD></TR></TABLE>

i resized it a bit

its almost as if the Main girdle is larger than the crankshaft bore

what will fix this

 

you might have to get mains from a differant block, then get it align bored/hone

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PSIPRO4 &raquo;</TD></TR><TR><TD CLASS="quote">you might have to get mains from a differant block, then get it align bored/hone</TD></TR></TABLE>

thats what i wanted them to do, because of the crank being from another gsr block, which i thought they HAD to do it, if it were a different crank.

i have used cranks from different blocks in other motors before, and just had them aligned in the building process

when you say MAINS do you mean MAIN bearings or MAIN caps? cause this is with the factory gsr girdle in place

 

Mike,

I wish you the best of luck in figuring out a solution

 

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

I wish you the best of luck in figuring out a solution

</TD></TR></TABLE>

thanks cause this is getting ridiculous

 

caps, & then you might need them to machine to fit your girdle back on.

 

After rereading your post it makes sense now to just get new main caps/girdle. Is it possible the one you have is from a different block?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">After rereading your post it makes sense now to just get new main caps/girdle. Is it possible the one you have is from a different block?</TD></TR></TABLE>

possibly, with all the crap i have had in my garage and shop its bound to be the culprit of this situation.

would buying one from honda be acura be better, or should i get something like a Z10 or something like that?

 

if you are going all out. you might as well go with an aftermarket girdle, and get main studs while you are at it.

 

Before you go spending more money, try to figure out what is causing the problem. Do you have another block or main caps/girdle to compare to?

It shouldn't matter if it is OEM or aftermarket, they should all be very close to the same spec.

 

He needs different main caps not a girdle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">He needs different main caps not a girdle. </TD></TR></TABLE>

Muckamn is more than likely dead on with this one, i am gonna see about getting some new main caps from acura, because that is alot cheaper than sleeving yet another block

 

Mike. I'm not an expert engine builder by any means. Judging by the drawing I would think new main caps and an align hone/bore would fix your problem. I know there is a Darton rep on the board that could give some inpute as well.

 

you will probably have to have the caps cut down a good bit and line bored. Most likely the caps are from a different block, thats why they dont line up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">you will probably have to have the caps cut down a good bit and line bored. Most likely the caps are from a different block, thats why they dont line up.</TD></TR></TABLE>

correct, the mains, and crank are from another block.

last time i used an LS crank a machine shop in florida took care of it like it was butter, but for some reason it seems to be a big issue here in alabama

who on here is a darton rep?

 

anyone else?

 

yeah, sometimes they will line up good, sometimes they dont... this time they arent... being 3 thou off is a good ammount... a line bore may not fix it... there is only one way to find out.

 

I think I would go to the local dealership buy some new caps and try them out, at least this way you have the option of returning them if they don't work.. A lign hone certainly wouldn't fix this. I doubt a hone would remove enough to make a difference. Hope that helps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Adi Radoncic &raquo;</TD></TR><TR><TD CLASS="quote">I think I would go to the local dealership buy some new caps and try them out</TD></TR></TABLE>

the problem is honda/acura does not sell the main caps seperatly they are sold with the blocks only...your gonna have to find another block to take the caps off of.

 

luckily another H/T member had some and i bought them last night, getting sent out today

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrbsponge &raquo;</TD></TR><TR><TD CLASS="quote">last time i used an LS crank a machine shop in florida took care of it like it was butter, but for some reason it seems to be a big issue here in alabama</TD></TR></TABLE>

What part of AL you from?

 

You need to pull the mains from the girdle and make sure they are numbered 1-5 with 1 near the oil pump and make sure all the arrows point toward the oil pump.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">You need to pull the mains from the girdle and make sure they are numbered 1-5 with 1 near the oil pump and make sure all the arrows point toward the oil pump.</TD></TR></TABLE>

thank you earl, i sent you a pic this morning

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sp00led &raquo;</TD></TR><TR><TD CLASS="quote">

What part of AL you from?</TD></TR></TABLE>

MOBILE