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That is true, Hib. One can have the #1 electrode designated on any spot on the rotor cap and pointing at the #6 cylinder, but as long as all the corresponding wires are attached to the associated cylinder sparkplugs, and the firing sequence is maintained, the proper timing can be be set. It...

I don't understand how or why it happened, and instead of,"jumped cog", we could call it,"gremlins", or,"the-same-entity-removing-a-sock-from-the-drier", but on the last week of August I suddenly found the timing way off on my Vette (hence the video), and until then, I also believed it was a...

To get my engines in the ballpark, what I do is mark the #1 electrode on the base of the distributor, so that when I remove the cap, I have a solid reference. I also use a straight edge to make sure that my eyes are not playing tricks on me and align the mark on the base of distributor and the...

I guess that is what I mean, Mikey. 3,000 RPM is hardly WOT, so plenty of that vacuum wil still be there applying advance, and normally, we (those of us always seeking more power :D ) would want the timing to be all in by 2,800 - 3,200 rpm. But it could also be the weight springs too light and...

At the risk of setting off a hijack bomb and diversion of topic at hand, please bear with me. No one else thinks that having 26.5 advance at idle is weird? So between idle and 3,000 rpm only a maximum of 9.5 degrees would be applied? Bolisk, what was the timing at 3,000 rpm? p.s. I know that...

Question: In the spirit of experimentation, would a bottle of octane booster (Octane 104+ I think it is called) sufice for testing whether the engine detonates or not?:upthumbs

Bolisk, If you measure the chamber volume and piston displacement, you'll be able to approximate the amount of milled head surface. Of course, on the assumption that it was a true 11:1 CR. I was looking in the web for a calculator I came across sometime ago that would return to you how many...

Al, I am sure if a professional engine scan machine could (with today advances and all), but you could adjust it yourself. The throttle position adjusting screw is just aft (towards the windshield) of the throttle position plunger and lever. Hopefully you drilled out the plug during...

Piston stop Cylinder gauge. Since your machinist will be boring these cylinders, and I am sure you'll pick someone half-decent, you probably won't need Mitutoyo gauges for a one build. Perhaps, the Mitutoyo would be better if you were doing your own machining. They would be better for opening...

I agree with Mikey. Just either prove or eliminate timing as the culprit, and then target another posibility. Let's pretend you discount the timing as the cause, and you decide to pull the driver's side head, well then you are in prime territory to measure the CR on your engine. Don't go...

In a nutshell, it is like Tim says. You disconnect the 4-pin wire from the distributor (I prefer to wait until engine is warm and running fine before disconnecting. In theory, the computer cannot detect the initial timing set, so it presumes as factory required. 12 degrees with a mild cam...

Ok. What I found it happened in my Vette was that it "jump" cogs between the cam and the distributor gear. So, find TDC for your Vette's #1 cylinder, and check the location of the vibration/torsional dampener TDC mark to the timing tab and the relative location of distributor's rotor to the #1...

Is the sound similar to the sound in this video??? https://skydrive.live.com/redir?resid=9E77F659449DD457!1565&authkey=!AFbkINKNmLgyq8E GerryLP:cool

Peter, the video with me behind the wheel just happened last week. The Vette developed a sort of backfire, except there was not backfire flame visible. I found the timing had jumped way too advanced somehow. I did check for sheared distributor gear pin and nothing was found wrong. I am still...

My suspicions exactly. Those check valves can look even new on the outside, but on the inside, they corrode from heat oxydation and condensation makes matters worse. The original check valves in my L81 were shot, but looked their radiant best on the outside. :mad:L

Wajulia, In 2002, I had a local shop work on the engine (swapping of heads and a few other changes), but by the time Sharkfest came around, they did not finish the work, and I left on my commuter to Bowling Green. While there, they called me, and said that the number eight cylinder was scored...

Jotto, are you referring to the red/orange color solenoid just aft of EGR valve? That is the EGR bleed solenoid. The computer operates it at certain engine regimes. For example, it will allow EGR to burn fluorocarbons at cruising speeds -not at wide open throttle. The one immediately below it...

Ok folks, I was adjusting the carb in Gail yesterday (long story, but timing setting jumped). And so I thought I post a video showing the dwell meter needle "hunting" or moving to reflect the varying levels during operation...

Well I'll be......I step out for a few months and all hell breaks loose!!!:mad How could you, man???? That is sacrilegious!!!....;):eyerole:L:upthumbs Just teasing, Bob! :chuckle:beer I do not know what I would do, but my kids are expecting to inherit Gail, so I would have to find alternate...

I always thought the ground was provided by the pressure switches. Once hydraulic pressure reach the switch setting, the contact would close, and ground the wire. The computer all it does is detect the switch action, and apply the ground to where is needed. :ugh