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Wow, really enjoying the part of this thread on combustion chamber efficiencies. I'd like to add for what it's worth that there are other external variables that can influence detonation as well....

This was a common problem with earlier 4.0L jeeps, neutral safety switch failures.

I've got a spearco over the trans intake and intercooler, none of the sheet metal ducting for the cooler or tb bracket. If interested let me know and I'll dig up pics.

The mechanical check valve is to prevent the crankcase from siphoning exhaust were the flow to be reversed.
It "should" be installed anywhere between the probe (tube), and the next intersection...

To get the most out of an exhaust evac kit, place the venturi in the longest straight run of pipe. This is usually the cat tunnel area. Insure the probe projects roughly 1/3 of the pipe I'd into the...

I've also seen it used extensively on intake manifolds, even bolted directly to the head. IMO over the intake would be fine, now the exhaust on the other hand...

250psi at the pump, -5 psi head loss = 245psi plus or minus vacuum at the injector

I've run 1,2, and 3gph at that pressure for 1.43-3.4 gph total.

The log motor could take nearly 1gph at idle...

They make an anti fog liquid for dive helmets available at most dive shops in 50 ml bottles. It is by far the best anti-fog for glass ever made.

This is correct; injection fluid does not displace fuel. It does displace air however. The original purpose to the model was to determine a relationship between the amount of fluid (based on...

denatured alcohol is mostly ethanol, in the us it must be at least 90% ethanol in fact. The other 10% is mostly methanol with a little tolulene, etc.

if you were to tune for ethanol fluid, I don't...

Similar but not identical, both isopropynol and ethanol have different molar weights and enthalpies. Ethanol has a greater calorific value than methanol and iso much less.

It is possible to tailor...

Outputs:

Compressor outlet temp = this is before inter cooling or fluid injection.
Temp after water-meth = self explanatory.
Temp after cooler = this is final charge temp after fluid and cooler....

Inputs:

% weight meth = methanol content of injection fluid 0.0-1.0
Corrected Flow Rate = actual injection rate based on size and number of jets, as well as pump pressure in gph.
Engine Volume =...

Opened it up for you...

was that to me or op?

I've been playing with log motors for awhile now, including one I currently run with water/method pre-compressor. I don't think your going to want to hear this but there are some big issues with a)...

Bump. Really need to know for sure which relay is fuel pump, I'm tackling a crank no-start condition. Need to get this thing going as its stuck on the wrong side of the border. Can't find a diagram...

I need to know which relay is the fuel pump relay in a 92 Acclaim 3.0 engine bay.There are two metal case relays and two plastic cased relays on the drivers side and two more plastic relays on the...

Math time Yay!

So it breaks down like this;
E10 (Most pump gas in states, all 87 & 89 pump gas in Ontario) has a blended (R+M)/2 octane rating equal to it's listed pump octane AFTER the ethanol...

Revised. Enter variables in grey, get results in orange. V3 now takes into account the air charge shrinking as it cools. Can be used to find compressor outlet temps or effect of humidity also. Works...

I don't know if anybody else is interested but I thought I'd post this in case there is.

It's a spreadsheet calculator that determines actual IAT reductions based on injecting water-methanol with...

I need a tempory home for a built 2.5/555 combo.
I have a place for the car in Brantford, ON.

I'm wondering about the fuel system (stock pump and tank?
Also about it's current status, has it...

+1 On the Seafoam/MM Oil.
Either way I'd go behind or at least in the throttle body, use your thumb over the line to control suction/rpm.
This makes it easier because you don't have to meter the...

Any rust underneath or in the wheel wells, spare well, rear quarters?

What pistons used in the build?

Any electrical gremlins besides the fixed ground issue?

3" exhaust include a cat. (fat...

Honestly, can't say for sure.

I pulled the battery in favor of the newest one.
I swapped the newer power module for the original.
I moved the ground lead from the ext. reg. from the common...