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Old December 14th, 2008, 06:21 PM   #41
scottie
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didn't some years of 2.8's have soft cams and other years didn't have headgaskets too.


but back on 4 cylinders, If the Iron Duke can be considered the "Best" thats sad, so i think we should include the Quad4, it actually had technology and power.
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Old December 14th, 2008, 06:34 PM   #42
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didn't some years of 2.8's have soft cams and other years didn't have headgaskets too.


but back on 4 cylinders, If the Iron Duke can be considered the "Best" thats sad, so i think we should include the Quad4, it actually had technology and power.
on 2.8/3.1 they never really had head issues. they had block issues. the ones I saw fail from the head were "repaired" by outside sources and had damage. one the guy had tightend a head bolt to the point it tore the head a crack around the head of the bolt by over torquing. the block issues was fatigue failure. the piston walls were thin and the castings were thin. I saw the right front corner of the block crack and fall off on several over the years. the other failure was the inboard side of the front wheel drive engines would crack the block along the top of the cylinder walls. I have to beleive it was heat stress fatigue as I didn't see it on the forward mounted engines.

The Quad 4 was the greatest engine GM ever designed. ask any engineer on the project, they'll tell you. it was the public who fucked it up.
The quad for was a good experiment at best. they had tried to built a alluminium headed engine that could start and run without ever being shut off. it worked just fine for that. 100,000 miles if you never shut it off. there in was the problem. they didn't duty cycle the engine like some soccer mom and it took it out the minute it went on the market.
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Old December 14th, 2008, 06:57 PM   #43
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you laugh, but did you ever drive a 1.9 Izuzu powered S 10? they rocked for power. the engines couldn't out last the payment book though.
Cant say I have.

I hear good stuff about the RE, but just as many people who run them say as much bad about them though. It moves my truck just fine, But I've had nothing but problems with it since I bought the truck. I'd rather just go to my preferred power plant and get it over with, instead of keep measing with a weird motor that I can seem to figure out. Its like it has PMS.
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Old December 14th, 2008, 07:37 PM   #44
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Its like it has PMS.
welcome to my world.

I actually had a gal who was a waitress at the old bar I worked at who owned a Toyota. that was the damnedest thing for acting up. you'd have sworn that little fucker was possed by the devil himself. I got called constantly to go look at it for not starting or running like shit. if the clouds cleared up before I got there it was running fine.
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Old December 14th, 2008, 07:57 PM   #45
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The 2.8 In my old S-10 got the crap ragged out of it, towed way more then it should have and lasted 196k... still runs but has a knock now. The motor itself was never opened.

Though that oil was changed religiously at 3k.
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Old December 15th, 2008, 03:46 AM   #46
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as long as you change your timming belts religiously.
not on the 2.3L SOHC motors.

they arn't interfearence motors.
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Old December 15th, 2008, 04:54 AM   #47
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not on the 2.3L SOHC motors.

they arn't interfearence motors.
most engines are not. the thing is if you are at speed tearing down the highway the cam has momentum. its when you started it fresh in the morning it would get you. for some reason the things would just snap . the worst for this was the Geo Sectrums(izuzu engine). them bastards would bend valves to the point you had to beat them out of the head.
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Old December 15th, 2008, 04:57 AM   #48
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The 2.5 4-tech in my 86 olds ran forever. I damn near ran it out of oil once put 3 quarts back in it and drove the shit out of it again. thought it blew up once, only to find my main crank pulley came loose and was wobbleing a bit throwing the engine off balance. As for the quad4 my brother had one in his GTZ beretta and it ran 150k on the first set of heads, new heads on and got another 75 out of the bottom end. This car was beat to hell, I had it well over 130mph on several different occasions. My brother did the same all the time with it, He ran from Kentucky to Michigan at no less then 95 the entire way no problems.
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Old December 15th, 2008, 05:08 AM   #49
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As for the quad4 my brother had one in his GTZ beretta and it ran 150k on the first set of heads, new heads on and got another 75 out of the bottom end. This car was beat to hell, I had it well over 130mph on several different occasions. My brother did the same all the time with it, He ran from Kentucky to Michigan at no less then 95 the entire way no problems.
well the worst thing you could do to a quad 4 was shut it off. the second worse was to start it. the thing that killed the engine was heat cycles. if it didn't warm up on a normal drive to work then it chewed up the head & gasket. I used to have to clean them with a razorblade to keep from nicking them and making gouges on the head face. sounds like your brother drove farther then ten miles each way to work? that would have prevented the damage most saw.
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