what is the max I can bore a sleeved z6 to? i was told that 78mm will give me a 1.8L motor. can I go any bigger or is that about it? I have this posted in the tech. forum but no one has responded so i figured i would try here

 

bump...anyone know or anyone know who i can ask?

 

I believe 78mm or maybe 79mm is as big as you can go. You might want to talk to someone who does resleeving to find out.

 

ASK BISI

 

We have gone up to 79mm, but the 78 gave us the best performance and sealing. I hope that helps. Let me know if I can be of further assistance.

 

78mm will only give you 1720 cc.
i was planning on this same build also. i was told 78mm is really the safest max bore, and that would be on a race engine.

DH-Racing.com said 79-81mm bore. ("81 mm is for allmotor ")

Sean at ERL Performance said "The Darton MID’s that we use to sleeve the D series blocks can be bored out to a max bore of 78mm."

Vince at Golden Eagle said "To sleeve your D16 block would run $850 up to 79 mm. I always suggest going a bit smaller than that in case you ever need to re-hone the block for any reason. "

81mm would give you 1855cc
79mm would give you 1764cc
77mm bore will give you 1676cc

kinda interested in the new SOHC in the base model 2006 civics . already 1.8L
• 1.8-liter, SOHC i-VTEC® 4-cylinder engine
• 140 horsepower @ 6300 rpm
• 128 lb.-ft. of torque @ 4300 rpm

wonder if that could be sleeved and bored to like 2.0 liter

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bisimoto &raquo;</TD></TR><TR><TD CLASS="quote">We have gone up to 79mm, but the 78 gave us the best performance and sealing. I hope that helps. Let me know if I can be of further assistance.</TD></TR></TABLE>
the single cam master has spoken