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177
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fossil_digger
comments
18
date added
2011-03-20
category
Sport
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"a man working on a car engine"

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pro_junior Report This Comment
Date: March 20, 2011 05:24PM

went to high school with a kid that had one side of his face all fucked up, he and his dad were working on their car and his dad was smoking...the battery exploded...
fossil_digger Report This Comment
Date: March 20, 2011 10:30PM

a head gasket precautionary replacement procedure. snicker snicker
Mrkim Report This Comment
Date: March 21, 2011 03:23AM

I HATE Fuckin Chevys hot smiley

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x Report This Comment
Date: March 22, 2011 05:43PM

Wow... Who would of thought that you're one of those "Ford pisses on Chevy" guys?
woberto Report This Comment
Date: March 23, 2011 02:22AM

I still don't know what I'm s'posed to be looking at.
Mrkim Report This Comment
Date: March 23, 2011 05:39AM

It's a POS Chevy Classic I ripped apart to do a head gasket/timing chain/water pump/thermostat replacement on. Haddn touched a Chevy in years and reminded myself really quickly why I love Mitsus so much.

This MoFo is one sad piece of engineering in so many ways they're too numerous to recount (*facepalm*)


Once more for emphasis I HATE FUCKIN CHEVYS! (*horse*)

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BlahX3 Report This Comment
Date: March 23, 2011 04:41PM

They had cool distributors on the old gals though. You could tweak point dwell on the fly thru a little window with an allen wrench. I think JC Whitney had a kit to give you a knob on the dash to mess with it while driving too. Not that I know what the hell good that would do...
Mrkim Report This Comment
Date: March 23, 2011 10:00PM

Point distributors, wow, I haddn thought about those in a while, carburetors either for that matter. Can't say I miss either of 'em much, but ... with a pair of flat blade screwdrivers, a 1/2 X 9/16" distributor wrench and a matchbook cover you could set everything to do with the fuel and ignition systems, unless you had a Chevy, which required an allen wrench too tongue
sticking out smiley

Adjusting the timing advance on the fly from inside the car was a neat trick for old school hot rodders. When playin with carbs even the humidity and ambient temperature could be slightly compensated for that way without havin to pop the hood. 'Course tweakin the mixture slightly was also kinda important for those who always wanted all the HP they could wring out.

Back before crank triggered ignitions were common I designed one for an old 2.3 Ford I had by guttin a reluctor wheel style distributor, choppin the wheel into into segments and had a machinist cut slots for 2 segments in the crank pulley, then used the pickup coil mounted on a bracket to trigger an MSD ignition, then also had the MSD timing advance module inside for adjustment. Worked like a champ.

Good Times rock
on

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BlahX3 Report This Comment
Date: March 24, 2011 05:28AM

I wanted to mess with electronic ignition kits. I never did.

The computer controlled stuff these days is undoubtedly cool but the good ol' mechanical stuff was easy to fix.
Mrkim Report This Comment
Date: March 24, 2011 02:40PM

Yeah the new computer controlled stuff is actually the best yet in regards to ignition and fuel management and is directly responsible for huge leaps in efficiency while making control of turbo systems waaaaay better than were ever possible previously. In fact, until engine management reached its current state turbo systems were really pretty dodgy at best, which has completely turned around since the timing and fuel systems can now react in milliseconds and stop/minimize engine damaging events smileys with beer

Alotta people aren't aware of it but the average car today has more computer power than did the Lunar Lander!

While old hot rodding was done with wrenches and tweakin, today it's done with lap-tops, manipulation of sensor data and piggy-back electronic devices that "fool" the onboard computer systems grinning smiley

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pro_junior Report This Comment
Date: March 24, 2011 10:18PM

years ago I had a '77 ford f-150, I replaced the p.o.s. 351M with a Boss 302 thumbs
downthumbs
down...ended up with a ground fault short in the process and could not find it, even took it into a couple shops and nobody could figure it out...confused smiley
anyway, the condenser and/or the points would just randomly fry out from time to time. I would buy hi-pro because they seemed to last longer...
I'd be driving along and the truck would just die, I'd have the parts and tools out of the glove box before I had coasted to a stop and have the new parts on and back on the road in about 2 minutes...rock
on
woberto Report This Comment
Date: March 25, 2011 02:22AM

The concept of passing the actual ignition current through points, rotor & cap seems odd these days. Modifying those setups to electronic ignition was common, by using the dizzy to simply "signal" when to supply the spark meant using a token voltage and protecting the points etc. These days I would never attempt anything related to ignition or efi.
Mrkim Report This Comment
Date: March 25, 2011 01:56PM

Yeah, though points and a condenser were a simple enough method and survived for a long time as the way it was done, I don't miss the required maintenance on 'em.

I'm not 100% on this but I don't think the actual ignition voltage passed through the points. It seems like the points were just a device to trigger the charged coil voltage which then passed that voltage to the center terminal on the distributor which then was distributed to the individual spark plug terminals by the distributor rotor.

On my old Capri I picked up an Allison XR-700 (<- I think) unit that replaced the points/condenser with a slotted wheel that slipped over the distributor shaft then had an LED on one side and a pick-up sensor on the other side of the disc and passed the signal to an ignition box which then triggered the coil to fire. That was a big improvement since it required no maintenance.

I hear people say all the time these days how complicated new computer engine management systems are, but I disagree. The new systems take all but spark plug and wire replacements outta the loop as what's required to maintain an ignition system and wires/plugs now last 100k miles or so, unlike the old days when wires/plugs only made it 30-40k miles and points/condensers were only good for about 1/2 that at best. Todays stuff is far more maintenance free but they do take system diagnostics outta the hands of most people as it now takes ex$pensive diagnostic equipment to troubleshoot a system unless you just happen to have spare parts layin around to swap in till you find the offending component.

As far as fuel systems go, there's no more fiddling with carburetors periodically and if you travel in varying elevations the engine management systems will take care of adjusting the overall spark and fuel systems to compensate for the elevation changes for you. In the old days if you were a flatlander and went into the mountains you'd have to re-adjust your points and carburetor or else loose a significant portion of both fuel economy and horsepower.

And .... a good set of tires used to only last between 10,000 and 30,000 miles. Tires that lasted 40k-60k were just a dream!

All in all I don't miss the "good old days" as I see those as today smileys with beer

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BlahX3 Report This Comment
Date: March 25, 2011 02:32PM

Excellent points on all counts.

Yes, you are correct, the points switch on and off 12v to the primary of the ignition coil. You may have had a high resistance short between the primary and secondary windings in the coil that caused the points and condenser to fail rapidly. As I recall that was not uncommon.
Mrkim Report This Comment
Date: March 25, 2011 03:30PM

Every now and then folks who believe dearly in the "good old days" make for some excellent bargain finds for the rest of us.

I was at a swap meet about 10yrs ago where a buddy managed to pick up a complete new intake manny, fuel rails, big throttle body and injectors for a 302 HO from a cat who had bought a new crate motor from Ford and yanked the injection set up so he could replace it with a carburetor set up!

I quizzed the guy about why he wanted to use the less efficient carburetor instead of the injection set up and he said because his harness wasn't set up for fuel injection and because he believed he could make more HP with a carburetor. I stopped short of tellin the guy what a dumbass I thought he was to keep from pissin him off and queerin the deal for my buddy but did mention that there were companies that made retrofit harnesses to allow installation of injection set ups and computer engine management systems for older cars and that in my opinion there was more HP to be made with FI and a computer than with a carb and older ignition systems (which is pure fact!).

My buddy wound up snaggin about a grand worth of hard parts for $100 and we both walked away smilin rock
on

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BlahX3 Report This Comment
Date: March 25, 2011 04:57PM

Yep. The development of automotive technologies and engineering is very impressive. I still have an appreciation for the way-old-school engineering. I still like old vacuum tube guitar amps too and own a couple.
woberto Report This Comment
Date: March 26, 2011 12:20AM

Yes I think you're right about 12v points but they usually resided less than an inch from the rotor button and the whole dizzy was a high voltage disaster waiting to happen. However this setup proved very reliable for almost 100 years so who am I to say otherwise smiling
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woberto Report This Comment
Date: March 26, 2011 01:51AM

This one might be easier to wotk on Kim...
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