'88 Wrangler needs new 4.2L engine...
Guest
Posts: n/a
'88 Wrangler needs new 4.2L engine...
I need to replace the 4.2L engine in my '88 wrangler and I was
wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
but I don't think they're interchangable. Does anyone have personal
experience with this, or any advice?
Thanks,
Josh
wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
but I don't think they're interchangable. Does anyone have personal
experience with this, or any advice?
Thanks,
Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
The main difference is the pilot bearing in the flywheel center. The 78
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
The main difference is the pilot bearing in the flywheel center. The 78
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
The main difference is the pilot bearing in the flywheel center. The 78
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
has a bushing that is slightly larger then the bearing the 88 uses.
You can just use the 88's flywheel as far as I know or you can pull out
the bushing and the bushing retainer and press a bearing in I think.
Other than that, the 78 might have a 1 bbl carb and manifold on it. You
can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
you would be laughing. That old one is the better carb. In either
case, a kit for the carb is only twenty bucks or so.
The 88 has better engine mounts, I would keep them or their style mount
Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
that can be fixed usually. It is usually a bad line on the PCV valve or
a dead charcoal canister. A new engine will do the same....
Oh, I have a 78 engine in my 86 I think also.
You also 'can' hook all the pollution junk up to the 78 too if you
want....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
Josh wrote:
>
> I need to replace the 4.2L engine in my '88 wrangler and I was
> wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> but I don't think they're interchangable. Does anyone have personal
> experience with this, or any advice?
>
> Thanks,
>
> Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
Oops, the bushing and bearing are in the end of the crank and will need
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
Oops, the bushing and bearing are in the end of the crank and will need
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
Guest
Posts: n/a
Re: '88 Wrangler needs new 4.2L engine...
Oops, the bushing and bearing are in the end of the crank and will need
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
to be switched. A local machine shop had a slick tool for pulling them
out.
Mike
Mike Romain wrote:
>
> The main difference is the pilot bearing in the flywheel center. The 78
> has a bushing that is slightly larger then the bearing the 88 uses.
>
> You can just use the 88's flywheel as far as I know or you can pull out
> the bushing and the bushing retainer and press a bearing in I think.
>
> Other than that, the 78 might have a 1 bbl carb and manifold on it. You
> can swap over the 88's 2 bbl easy enough. If it already has the 2 bbl,
> you would be laughing. That old one is the better carb. In either
> case, a kit for the carb is only twenty bucks or so.
>
> The 88 has better engine mounts, I would keep them or their style mount
>
> Just FYI, if your 88 is only blowing oil into the air filter, (blowby),
> that can be fixed usually. It is usually a bad line on the PCV valve or
> a dead charcoal canister. A new engine will do the same....
>
> Oh, I have a 78 engine in my 86 I think also.
>
> You also 'can' hook all the pollution junk up to the 78 too if you
> want....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Josh wrote:
> >
> > I need to replace the 4.2L engine in my '88 wrangler and I was
> > wondering if I could drop in an older 4.2L engine. I found a '78 4.2L,
> > but I don't think they're interchangable. Does anyone have personal
> > experience with this, or any advice?
> >
> > Thanks,
> >
> > Josh
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