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GM Quad4 (2.3L DOHC I4) :How durable is it?



 
 
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  #1  
Old April 20th 19, 09:44 PM posted to rec.autos.tech
[email protected]
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Default GM Quad4 (2.3L DOHC I4) :How durable is it?

On Tuesday, December 1, 1998 at 1:00:00 AM UTC-7, Oriana Y. Reyes wrote:
> Greetings everyone;
> I was wondering if anyone had any experiences with this engine. Mine is
> the High Output variety (180 HP) that came stock in my 94 Olds Achieva SC..
> It now has 108K miles on it, and I'm curious how much longer it will last..
> Specifically, I am beginning to worry about the valvetrain and cam chains.. I
> had an 86 Olds 98 Regency which had the old 3.8L V6 in it, and it lost the
> timing chain at around 150K, which I understand is pretty average. The Quad4
> uses dual chains (at least in the 94 model) to drive the cams, so this might
> improve the reliability. All the same, I'd like to know if anyone has had
> any major problems with their Quad4 motor. I'm keeping my fingers crossed..
> Also, if any of the more technical people here would like to crush my
> pipe dreams : I was wondering about the feasability of bolting on an Eaton
> Roots type supercharger to said Quad4. Yes, I have a 2,400 lb car being
> moved by 180 horses, and that's still not enough. I've seen prototype
> Sunfires and Cavaliers with this supercharger mated to the 2.4L TwinCam
> motor, which is a close cousin and descendant from the Quad4. Seems to me if
> that setup works, then it ought to work with my engine.
>
> Thanks for any input!
> - Ben
>
>


2001 Pointiac Grand AM Quad 4 SOHV - 80,000 KM. Synthetic Oil changes every 5K. And it Head cracked. GM Knew this was a problem but is also hoping the owners would go way licking their wounds. I complained to GM. Got a take to to our dealer... who quoted me $3500 to fix with the exact same parts that failed. Went to an idenpendant engine rebuild shop. They put on a re-engineered head re-enforced where the hot and cool jackets sit to stop future leaking. Got absolutly no help from GM. It was my first and last GM I will ever own. So... Frankly my family and I will never buy another GM Product. Looking forward to their Chapter 11.
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  #2  
Old April 20th 19, 10:32 PM posted to rec.autos.tech
dsi1[_11_]
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Posts: 331
Default GM Quad4 (2.3L DOHC I4) :How durable is it?

On Saturday, April 20, 2019 at 10:44:09 AM UTC-10, wrote:
> On Tuesday, December 1, 1998 at 1:00:00 AM UTC-7, Oriana Y. Reyes wrote:
> > Greetings everyone;
> > I was wondering if anyone had any experiences with this engine. Mine is
> > the High Output variety (180 HP) that came stock in my 94 Olds Achieva SC.
> > It now has 108K miles on it, and I'm curious how much longer it will last.
> > Specifically, I am beginning to worry about the valvetrain and cam chains. I
> > had an 86 Olds 98 Regency which had the old 3.8L V6 in it, and it lost the
> > timing chain at around 150K, which I understand is pretty average. The Quad4
> > uses dual chains (at least in the 94 model) to drive the cams, so this might
> > improve the reliability. All the same, I'd like to know if anyone has had
> > any major problems with their Quad4 motor. I'm keeping my fingers crossed.
> > Also, if any of the more technical people here would like to crush my
> > pipe dreams : I was wondering about the feasability of bolting on an Eaton
> > Roots type supercharger to said Quad4. Yes, I have a 2,400 lb car being
> > moved by 180 horses, and that's still not enough. I've seen prototype
> > Sunfires and Cavaliers with this supercharger mated to the 2.4L TwinCam
> > motor, which is a close cousin and descendant from the Quad4. Seems to me if
> > that setup works, then it ought to work with my engine.
> >
> > Thanks for any input!
> > - Ben
> >
> >

>
> 2001 Pointiac Grand AM Quad 4 SOHV - 80,000 KM. Synthetic Oil changes every 5K. And it Head cracked. GM Knew this was a problem but is also hoping the owners would go way licking their wounds. I complained to GM. Got a take to to our dealer... who quoted me $3500 to fix with the exact same parts that failed. Went to an idenpendant engine rebuild shop. They put on a re-engineered head re-enforced where the hot and cool jackets sit to stop future leaking. Got absolutly no help from GM. It was my first and last GM I will ever own. So... Frankly my family and I will never buy another GM Product. Looking forward to their Chapter 11.


The good news is that kind of thing won't happen when we're all driving/riding electric cars because there's no head. If the motor fails, you just bolt on another one and rebuild the old one. Life will be good again.
 




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