calib17a

Just contemplating on my next setup. What's the maximum bore size you can go when resleeving b series block for fi? Would 87mm or larger be possible? If not resleeving, maybe I'll go with the largest bore size on a Darton block. I also plan to go the maximum stroke length 95mm or can I go longer with custom Darton block? That will yield a 2.26 lit displacement. Should be good for some torque and earlier spool up.

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by calib17a &raquo;</TD></TR><TR><TD CLASS="quote">Just contemplating on my next setup. What's the maximum bore size you can go when resleeving b series block for fi? Would 87mm or larger be possible? If not resleeving, maybe I'll go with the largest bore size on a Darton block. I also plan to go the maximum stroke length 95mm or can I go longer with custom Darton block? That will yield a 2.26 lit displacement. Should be good for some torque and earlier spool up.</TD></TR></TABLE>

The max size recommended by most "sleeve" companys in a FI application is 85-86mm. Any larger and the cyl walls are too weak.

As for your setup - i really dont think it would be a good idea. Making a 95mm stroke puts a huge stress on the motor. Your much better off doing what hondas do best - rpms.

I think you will have alot more reliable engine by keeping the stock stroke, and using a 84-85mm bore (so if you blow it up, you can bore 1 size without getting a new block).

Even a 1.9litre gsr block (84mm stock stroke) will make 400whp at 10psi of boost with the right combination of parts.

That extra stroke and bore size might be good if your building a crazy all motor race engine, but in a FI application your better off keeping things strong.

liam