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Been away for a while, family and health (nothing serious) issues. I have found age old misconception(s), fervently defended and supported by many in the GW world is primarily based on not having OEM technical information available. It is because of this that many in the GW community have tried...

2000 Chevy tracker 1.6L rings work. Standard size is 75 mm with 0.5 and 1.0 oversize. I use the 0.5 mm oversize in my 1200 from rock auto

Agree with the battery issue. We tend to want to get every ounce of power out of a battery without realizing the consequences. Battery 3-4 years old, get new. It's like a car, a power pig. If a newer car has a weak/failng battery all sorts of wondrous things start to happen. Even more...

EFI conversion projects with aftermarket ECUs provide you with the tools to properly tune the engine. OEM EEFI systems may or may not allow this. Carbureted engine definitely do not. I have the flexibility to use these new tools to tune the GW engine and this is fantastic. I still use some old...

Engine Ignition Timing There is a lot to this, but I will be as succinct as possible. Start at the top. Initial ignition timing – base ignition timing, call it what you will is ignition timing at engine idle. My research indicates this is what is meant. To set this ignition timing, you need to...

Gentlemen - thank you. Not about patience - the old saying "patience my *** - I'm going to kill someone". Anyone remember this off the cuff saying? I like to know what the issue is and wh is it supposed to be this way. My partner Sonya's eyes glaze over whenever I show her what I am doing...

I did not fully describe the concept of base ignition timing. It is necessary to decipher/sift through all the information available to get an understanding of what you are searching for to determine a way ahead. The tuners out there that have done this for a while are quite skilled, but do...

Happy to announce that after many road trials have an engine tune that is "not bad" (perspective) based on tuning the VE (fuel) table and having a "wedge" table for ignition timing. Tuning a motorcycle is the same as a car, but takes longer as table cell values, IMO, are done in single point...

The tail is wagging the dog! The vocal visible minority - all groups, are being placated in a big way. Much like the EV fad, an additional "plate" fee to cover lost fuel tax revenues is being implemented. EV insurance rates are outpacing that for ICE vehicles. Going to implode.

Way off topic, but coming to a city near you: https://www.linkedin.com/pulse/americas-c40-cities-ban-meat-dairy-new-clothes-private

Pidjones - agree wholeheartedly. The coolant specs for the '85 FI model is that the thermostat opens 80-84 degrees C (176-190 degrees F) and fully open at 95 degree C (194 degree F). With the tuning software I can see the engine coolant temperature cycling and the rad fan starting at...

Next tidbit for the '85/'86 GW FI Model owners, coolant temperature. Coolant temperature affects a lot of features in the OEM CFI ECU. It directly affects Cold Advance (ignition timing during engine warm up). Some of the other features are Cranking Enrichment - the fuel the ECU estimates to...

Yesterday's road trial (11 Mar 2024) was primarily engine timing, no VE changes. Adjusted COP dwell a point or two. Engine tune is coming into focus. Looked at the tables and looked at the 3D maps. The ignition table is looking good, but the VE table is rustic to say the least. Looked at the...

I'm mentioning plugs and coils because there is very little if anything an owner can do to the 1200 engine regarding fuel and timing management. Lots of threads about modifying Timing is set for all 1200 engines and an owner cannot change this. The fuel management of the FI models is set, not...

Don't know what the issue is, more road trials and spark plug destruction to follow. Depending what I find from the next couple of road trials, this investigation may be a good precursor to individual cylinder fuel control (ICFT).

Second road trial and looking at the plugs. Engine tune is firming up. Took another set of plugs apart. #1 cylinder is a bit different, and the ground straps indicate that the engine timing may be advanced too much. Reviewed the data log and the engine timing is off. Redid the ignition...

We tend to get caught up in new technology when some of the older ways such as posted above, are as relevant today as in years gone by.

A short follow up regarding spark plug reading. Took the last road trial plugs apart, and the pugs are an interesting read. Looks like I can lean out the air-fuel mix and the timing is bordering on too advanced. Now I have a good place to start from for the engine tune. Honda did a good job...

Spark Plug 101 – my understanding of an engine part that doesn’t get a lot of recognition, and more adventures with the new ECU for my ’85 GW. Will be investigating how the plugs are fairing in my '85 GW. Lots of things to consider. These components come in varying sizes, heat ranges, and...

There's a lot of engine tune feature(s)/parameters that are interrelated in an engine tune. The first order of business is to get the fuel (VE) table sorted out, then ignition timing, then the AFR table, then integrate all the other features into the engine tune. Required Fuel (RF) tuning...