For those who set their bearing clearances, do you set them to the loose side of spec? (For a turboed engine.)

 

i always try to be right on spec, loose if i have too. but never tight, i've seen alot of burned bearings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by grndcont &raquo;</TD></TR><TR><TD CLASS="quote">i always try to be right on spec, </TD></TR></TABLE>
Right in the middle of spec?

 

ya, like not too far off from the proper size. i forget the window they give you, but i would not try to go a step above or below the proper size.

 

run the cranks at spec and rods a little loose for boost apps

 

Keeping the clearance loose will make for a more reliable turbo motor, but too loose and you'll find that you may need to step up to a thicker weight oil ( from 10/30 to something like a 20/50 ) This way the oil has more viscosity and can fill the void better and provide extra cushion for your engine components under boost.

 

i did my turbo motor builtup a lil loose....
factory wants 1.5
i set it on 2

 

Thanks. Going to set them on the loose side, but still within Hondas suggested spec. Think i'll run 10w40 also.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GITWIDIT &raquo;</TD></TR><TR><TD CLASS="quote">run the cranks at spec and rods a little loose for boost apps </TD></TR></TABLE>

Ring gap and piston to wall clearances should also be a little looser for boost apps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">i did my turbo motor builtup a lil loose....
factory wants 1.5
i set it on 2


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

What did you set to this spec-
RODS OR MAINS?

 

.o15-.017 comes to mind but its been a while

 

b series mains are .0009-.0017, i measured mine today for my turbo engine and was .0010. Is this too tight for mains?