Ok, i have a 88 Crx Hf with a 95 B18b just H/I/E. I have a DOHC ZC computer that im trying in my car, where the revlimiter on that is at 7500rpm's, i know theses motors redline at 7200rpm's. My question is what is the safest i could take that motor up too.

Ryan

 

Redline is 6800 on a stock LS motor.

 

Thanks a lot for the info, my stock computer is now back in

 

i've been in an ls/vtec and it went up to 8,400 on some spoon cams.

honda bottom ends will take all sorts of accidental punishment from an overrev on a downshift, so they can "safely" rev much higher then advertised

guarenteed they dyno test random bottom ends to nearly 10 thousand rpms

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrspeaker &raquo;</TD></TR><TR><TD CLASS="quote">after 7000 the valves start floating and theres no power...
after 7200 its possible too spin a bearing..
Ls motor makes most of its power between 6000-6500 rpm..
set the rev limit at 6800 rpm...</TD></TR></TABLE>

I agree on the power range (stock) but, valves floating and spinning bearings @ 7200? I shift mine @ 7200 daily and I am sure there many others that have ls/v's that take theres well beyond 8k.

Phil

 

im suprised that a PM7 is even working with your LS setup. That LS is an OBD1 and the zc ecu is OBD0

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StupidSlowCRX &raquo;</TD></TR><TR><TD CLASS="quote">im suprised that a PM7 is even working with your LS setup. That LS is an OBD1 and the zc ecu is OBD0</TD></TR></TABLE>

I run my 95' b18b on a pm6. You only have to change a CTS location(to the thermostat housing) extend o2 wire and I used the obd0 TB. It doesn't matter what year the motor is as long as everything is ran correct.

Phil

 

arent the connectors that plug up to the ECU different? I think the dizzy plugs are different too... What Harness are you using?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">

I run my 95' b18b on a pm6. You only have to change a CTS location(to the thermostat housing) extend o2 wire and I used the obd0 TB. It doesn't matter what year the motor is as long as everything is ran correct.

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

You don't even have to use the OBD-O throttle body, just extend a few wires.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. S &raquo;</TD></TR><TR><TD CLASS="quote">

You don't even have to use the OBD-O throttle body, just extend a few wires.</TD></TR></TABLE>

Yeah but, the obd0 TB just plugs in .

Phil