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

It running a little rich. If I hold the car at 3-5% throttle it will pop and backfire a little bit. It sounds ike a 3rd gen RX-7 .</TD></TR></TABLE>

hehe, cool, nice power made though

 

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

hehe, cool, nice power made though </TD></TR></TABLE>

Thanks. What I really like is the torque. 306 to the wheels .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FFgeoff &raquo;</TD></TR><TR><TD CLASS="quote">i havent stopped talking about it for the past cpl of weeks. i want to convert my civic to run on full propane.</TD></TR></TABLE>
I know someone who's done that. You are the mad Geoff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Arturbo &raquo;</TD></TR><TR><TD CLASS="quote">
I know someone who's done that. You are the mad Geoff.</TD></TR></TABLE>

no i am the happy geoff. actually i am the tired geoff. i need to start sleeping. that coffee icon is no joke, but its been mass amounts of kool-aid lately

lol so who did it? was it turbo?

 

Propane would make a much more stable gas to run nitrous on all the time with too.

 

good thread... what about guys like me that are closer to 10 to 1 compression. Is it still safe to tune close to the 400 mark on pump gas (93)?

 

There are no perceivable limits to pump gas on a general basis, its really a per engine basis. For that reason good tuning alone (etc, richer and backing out timing) will not be the key to solving how much boost, ignition advance or fuel that pump gas octane limits, it will be the part of solving how much knock threshold each engine can withstand.

In my mind we know that 400whp is generally obtainable at a safe level on a build b-series with the right turbocharged set-up, likewise 900whp is obtainable as well on 116 octane. It would be to benefit to know the cylinder pressure and temperature per cylinder basis, as well as the knock count to accurately tune each engine. If the spark plug resistence could be monitored you could derive how much cylinder pressure it would be peircing. Knowing the cylinder pressure you would be able to each calculate the cylinder temperature (PV=nRT). Implimenting this into a handheld device electronically that would read cylinder pressure and temperature, as well as knock count would be the most accurate and ideal way in tuning engines to their peak horsepower on pump or race gas. I think that 500whp is within reach, but science will have to aid in getting us there....that or a few blown engines until the answer is reached.

 

Vaportrail made 411 on my car on 93octane. Still some bugs to be worked out. I'm goin after your achievement Tony!

 

nice numbers

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vadian &raquo;</TD></TR><TR><TD CLASS="quote">Vaportrail made 411 on my car on 93octane. Still some bugs to be worked out. I'm goin after your achievement Tony! </TD></TR></TABLE>

Ahem, that was 414 and still plenty of room to go once we get the small issues of yours worked out.

Personally, I'm not that curious to find the limit. I think 100hp/piston is plenty for pump gas. There's too many variables in pump gas to safely push it past that on a regular basis IMHO.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FFgeoff &raquo;</TD></TR><TR><TD CLASS="quote">i think we need to find some cylinder combustion pressure sensing spark plugs. We have one at school, but it is for a motorcycle engine...</TD></TR></TABLE>

here it is (big pic)

 

mine made 430 @ 21psi on 93 octane without normal knock readings

 

pa has 94 and at 76 stations 100 on pump

 

SC has 95, 100, and 110 at the Pump in upper SC

 

How critical is a large turbo to making big whp numbers on 93 octane? I was told 15 psi would be
the limit on stock compression in my LS. 20psi if the compression was dropped to 8.5:1. 15psi on
my 54 trim would only result in 300-350whp.

I'm very interested in making big whp numbers on pump gas. Can someone go through and explain all the factors to making
400+whp on a B-series engine? I know I'm not the only curious one.

 

In a couple of week, I'll see how much hp my motor will put out with 91octane .
My motor spec.
b18c - 83mm, JE flat top pistons, manley rods, and stock b16 head.
inline-pro manifold, sc61E, xs intercooler (24x11x3)

 

Anyone got maps they can share? What is everyone's timing like?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BodyKits NW &raquo;</TD></TR><TR><TD CLASS="quote">Anyone got maps they can share? What is everyone's timing like? </TD></TR></TABLE>
low 20'sunder high boost

 

100 is the legal limit that can be dispensed from pump directly into car...anywhere

above that is not to be pumped into a vehicle, unless it's on a trailer

 

109.5 octane burbo blue in columbia

 

it's not legal for US roads
plain and simple

 

what does 100 oct cost??

 

seems to be universally 3.99 a gallon

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRswapandslow &raquo;</TD></TR><TR><TD CLASS="quote">seems to be universally 3.99 a gallon
</TD></TR></TABLE>

4.26 in southern california.

 

what cam are you guys running....and cam timing and how much overlap this can help you run shity gas with a lot off boost