Here soon I will be installing the prelude oil cooler fittings in my crvtec block to release the excessive crankcase pressures. Does anyone know what size those hex plugs are on the back of the block????

Thanks

 

No offense, but what stops you from getting a hex wrench set and finding out, or a Helms manual?

 

I have yet to find hex heads that large...... it's close to a 19-20mm hex head from the looks of it

 

NM, I just went and looked closer.... they aren't that large!

 

they should be a 17 or 19 millimeter

also if you are removing the plugs that require an allen key
they use a 14mm allen key

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">also if you are removing the plugs that require an allen key
they use a 14mm allen key</TD></TR></TABLE>

You are my hero

 

and what I did since i didn't have a big huge allen that size was to tripple nut a 14mm bolt and stick it's head in there and break that tight sucker loose. (same as the double nut method but this one required three) and a big breaker bar as well!