h22aBB4

well im thinkin about pickin up a 1991 prelude for free as a daily driver with a B21A1 that burns oil like mad. The piston rings are shot. Is it a simple matter of putting in new rings to fix it? Is this easy or hard? The lude supposedly had over 200k miles, but the odometer stopped working at 140k lol

fast_honda

I bet the rings have needed to be replaced for some time, so the cylinder walls are probably scored. I say this because of how you described its oil consumption. A rebuild is probably needed with oversized pistons and rings. But if you don't really care too much just put new rings in it, compression will still be lower than normal, resulting in a decrease in horsepower (if the walls are even scored) but it will run fine. Open it up and see for yourself.

h22aBB4

yeah i was thinkin that, but the walls are made of some composite material that's so strong it tears the rings apart, supposedly impossible to bore

preyluda

Yeah it's that stuff they used in nsx engines. FPR or something like that. Guess it's not good for high mileage. b21's usually have oil consumption issues.
b20a5>b21a1

darkspector2.0

woah.... you guys are kidding right? Umm... yeah

just get the lude, buy a jdm b20a for like 600 and be happy

h22aBB4

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by darkspector2.0 &raquo;</TD></TR><TR><TD CLASS="quote">woah.... you guys are kidding right? Umm... yeah

just get the lude, buy a jdm b20a for like 600 and be happy</TD></TR></TABLE>

does it go right in?

darkspector2.0

yeah, it's the 3g 2.0si motor

ethereal2pt2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22aBB4 &raquo;</TD></TR><TR><TD CLASS="quote">well im thinkin about pickin up a 1991 prelude for free as a daily driver with a B21A1 that burns oil like mad. The piston rings are shot. Is it a simple matter of putting in new rings to fix it? Is this easy or hard? The lude supposedly had over 200k miles, but the odometer stopped working at 140k lol</TD></TR></TABLE>

what's there to think? it's a free car. what else do you need to think about?

v4lu3s

pretty sure that block has iron bores, the FRM was not used until the h22/h23 and worn rigns are super common for the b21a1.

fastludeh22

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">pretty sure that block has iron bores, the FRM was not used until the h22/h23 and worn rigns are super common for the b21a1.</TD></TR></TABLE>

nope, the b20 has iron, the b21 has frm, it was the test engine for it. they fixed the design on h22 thats why the b21 go out after awhile

v4lu3s

ah no kidding, learn something new every day. i guess that frm issue on the b21 was why the Honda salvage yard i worked for a few yeas at threw every single b21a1 into the scrap pile and coveted the b20's.