Re: 91 Jeep Cherokee 4.0 engine transplant.
 

While Bill keeps his word and posts the pic I sent to him, and his
admission of wrongness, I'll describe the pic:

First off the high intake ports are proof positive that it's a 4.0 head,
the 4.2's ports are dead even with the exhaust. That's a holley TBI in
place of the carter, most of the factory plumbing is gone, only remains
of the factory harness in the background and the holley FI harness. The
coolant return no longer heats the intake which explains the holes.

That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
thermo housing if you have aftermarket fuel injection that needs a
coolant temp sensor, the stock location was of course... in the intake
which no longer is heated by coolant in my case. The valve cover is a
4.2 which technically shouldn't fit on a 4.0, I milled the alignment
ridge and used a late 4.0 (stamped steel cover) rubber compression
gasket, worked great. I used the 4.2 because I wanted a place to bolt
(the old cleaner housing bolt triangle) the custom cold air intake
tubing (not shown) so I could rout it over to the cooler side of the engine.

Also as with any swap there were bracket issues, my PS bracket is
chopped gusseted down low and no longer bolts to the intake. I ground
clearance for the header, and the intake doesn't seem to need the
support with extra large thick washers keeping it torqued down


--
Simon
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

I have not received your picture of carburetor manifold bolted to a
four liter head.
A clearer picture of the four liter head ports on 258 CID block:
http://www.off-road.com/jeep/tech/en...adconv/146.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Simon Juncal wrote:
>
> While Bill keeps his word and posts the pic I sent to him, and his
> admission of wrongness, I'll describe the pic:
>
> First off the high intake ports are proof positive that it's a 4.0 head,
> the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> place of the carter, most of the factory plumbing is gone, only remains
> of the factory harness in the background and the holley FI harness. The
> coolant return no longer heats the intake which explains the holes.
>
> That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> thermo housing if you have aftermarket fuel injection that needs a
> coolant temp sensor, the stock location was of course... in the intake
> which no longer is heated by coolant in my case. The valve cover is a
> 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> ridge and used a late 4.0 (stamped steel cover) rubber compression
> gasket, worked great. I used the 4.2 because I wanted a place to bolt
> (the old cleaner housing bolt triangle) the custom cold air intake
> tubing (not shown) so I could rout it over to the cooler side of the engine.
>
> Also as with any swap there were bracket issues, my PS bracket is
> chopped gusseted down low and no longer bolts to the intake. I ground
> clearance for the header, and the intake doesn't seem to need the
> support with extra large thick washers keeping it torqued down
>
> --
> Simon
> "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

I have not received your picture of carburetor manifold bolted to a
four liter head.
A clearer picture of the four liter head ports on 258 CID block:
http://www.off-road.com/jeep/tech/en...adconv/146.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Simon Juncal wrote:
>
> While Bill keeps his word and posts the pic I sent to him, and his
> admission of wrongness, I'll describe the pic:
>
> First off the high intake ports are proof positive that it's a 4.0 head,
> the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> place of the carter, most of the factory plumbing is gone, only remains
> of the factory harness in the background and the holley FI harness. The
> coolant return no longer heats the intake which explains the holes.
>
> That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> thermo housing if you have aftermarket fuel injection that needs a
> coolant temp sensor, the stock location was of course... in the intake
> which no longer is heated by coolant in my case. The valve cover is a
> 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> ridge and used a late 4.0 (stamped steel cover) rubber compression
> gasket, worked great. I used the 4.2 because I wanted a place to bolt
> (the old cleaner housing bolt triangle) the custom cold air intake
> tubing (not shown) so I could rout it over to the cooler side of the engine.
>
> Also as with any swap there were bracket issues, my PS bracket is
> chopped gusseted down low and no longer bolts to the intake. I ground
> clearance for the header, and the intake doesn't seem to need the
> support with extra large thick washers keeping it torqued down
>
> --
> Simon
> "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

I have not received your picture of carburetor manifold bolted to a
four liter head.
A clearer picture of the four liter head ports on 258 CID block:
http://www.off-road.com/jeep/tech/en...adconv/146.jpg
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Simon Juncal wrote:
>
> While Bill keeps his word and posts the pic I sent to him, and his
> admission of wrongness, I'll describe the pic:
>
> First off the high intake ports are proof positive that it's a 4.0 head,
> the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> place of the carter, most of the factory plumbing is gone, only remains
> of the factory harness in the background and the holley FI harness. The
> coolant return no longer heats the intake which explains the holes.
>
> That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> thermo housing if you have aftermarket fuel injection that needs a
> coolant temp sensor, the stock location was of course... in the intake
> which no longer is heated by coolant in my case. The valve cover is a
> 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> ridge and used a late 4.0 (stamped steel cover) rubber compression
> gasket, worked great. I used the 4.2 because I wanted a place to bolt
> (the old cleaner housing bolt triangle) the custom cold air intake
> tubing (not shown) so I could rout it over to the cooler side of the engine.
>
> Also as with any swap there were bracket issues, my PS bracket is
> chopped gusseted down low and no longer bolts to the intake. I ground
> clearance for the header, and the intake doesn't seem to need the
> support with extra large thick washers keeping it torqued down
>
> --
> Simon
> "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

Hi Mike,
Can you point to that site, because it's the exhaust only that may
be bolted to the four liter head, and 258 CID head.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Mike Romain wrote:
>
> Bill, offroad.com shows it works just fine plus lots of folks use the
> 4.0 head in their 258's and keep the carb.
>
> It's just the exhaust that doesn't fit, you have to use the 4.0 header.
>
> Mike

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

Hi Mike,
Can you point to that site, because it's the exhaust only that may
be bolted to the four liter head, and 258 CID head.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Mike Romain wrote:
>
> Bill, offroad.com shows it works just fine plus lots of folks use the
> 4.0 head in their 258's and keep the carb.
>
> It's just the exhaust that doesn't fit, you have to use the 4.0 header.
>
> Mike

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

Hi Mike,
Can you point to that site, because it's the exhaust only that may
be bolted to the four liter head, and 258 CID head.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Mike Romain wrote:
>
> Bill, offroad.com shows it works just fine plus lots of folks use the
> 4.0 head in their 258's and keep the carb.
>
> It's just the exhaust that doesn't fit, you have to use the 4.0 header.
>
> Mike

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

A clearer picture of the line of head ports on 258 CID short
block: http://www.millenicom.com/~davec/Jee...002/Engine.jpg
>
> I have not received your picture of carburetor manifold bolted to a
> four liter head.
> A clearer picture of the four liter head ports on 258 CID block:
> http://www.off-road.com/jeep/tech/en...adconv/146.jpg
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Simon Juncal wrote:
> >
> > While Bill keeps his word and posts the pic I sent to him, and his
> > admission of wrongness, I'll describe the pic:
> >
> > First off the high intake ports are proof positive that it's a 4.0 head,
> > the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> > place of the carter, most of the factory plumbing is gone, only remains
> > of the factory harness in the background and the holley FI harness. The
> > coolant return no longer heats the intake which explains the holes.
> >
> > That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> > thermo housing if you have aftermarket fuel injection that needs a
> > coolant temp sensor, the stock location was of course... in the intake
> > which no longer is heated by coolant in my case. The valve cover is a
> > 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> > ridge and used a late 4.0 (stamped steel cover) rubber compression
> > gasket, worked great. I used the 4.2 because I wanted a place to bolt
> > (the old cleaner housing bolt triangle) the custom cold air intake
> > tubing (not shown) so I could rout it over to the cooler side of the engine.
> >
> > Also as with any swap there were bracket issues, my PS bracket is
> > chopped gusseted down low and no longer bolts to the intake. I ground
> > clearance for the header, and the intake doesn't seem to need the
> > support with extra large thick washers keeping it torqued down
> >
> > --
> > Simon
> > "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

A clearer picture of the line of head ports on 258 CID short
block: http://www.millenicom.com/~davec/Jee...002/Engine.jpg
>
> I have not received your picture of carburetor manifold bolted to a
> four liter head.
> A clearer picture of the four liter head ports on 258 CID block:
> http://www.off-road.com/jeep/tech/en...adconv/146.jpg
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Simon Juncal wrote:
> >
> > While Bill keeps his word and posts the pic I sent to him, and his
> > admission of wrongness, I'll describe the pic:
> >
> > First off the high intake ports are proof positive that it's a 4.0 head,
> > the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> > place of the carter, most of the factory plumbing is gone, only remains
> > of the factory harness in the background and the holley FI harness. The
> > coolant return no longer heats the intake which explains the holes.
> >
> > That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> > thermo housing if you have aftermarket fuel injection that needs a
> > coolant temp sensor, the stock location was of course... in the intake
> > which no longer is heated by coolant in my case. The valve cover is a
> > 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> > ridge and used a late 4.0 (stamped steel cover) rubber compression
> > gasket, worked great. I used the 4.2 because I wanted a place to bolt
> > (the old cleaner housing bolt triangle) the custom cold air intake
> > tubing (not shown) so I could rout it over to the cooler side of the engine.
> >
> > Also as with any swap there were bracket issues, my PS bracket is
> > chopped gusseted down low and no longer bolts to the intake. I ground
> > clearance for the header, and the intake doesn't seem to need the
> > support with extra large thick washers keeping it torqued down
> >
> > --
> > Simon
> > "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: 91 Jeep Cherokee 4.0 engine transplant.
 

A clearer picture of the line of head ports on 258 CID short
block: http://www.millenicom.com/~davec/Jee...002/Engine.jpg
>
> I have not received your picture of carburetor manifold bolted to a
> four liter head.
> A clearer picture of the four liter head ports on 258 CID block:
> http://www.off-road.com/jeep/tech/en...adconv/146.jpg
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Simon Juncal wrote:
> >
> > While Bill keeps his word and posts the pic I sent to him, and his
> > admission of wrongness, I'll describe the pic:
> >
> > First off the high intake ports are proof positive that it's a 4.0 head,
> > the 4.2's ports are dead even with the exhaust. That's a holley TBI in
> > place of the carter, most of the factory plumbing is gone, only remains
> > of the factory harness in the background and the holley FI harness. The
> > coolant return no longer heats the intake which explains the holes.
> >
> > That's a 4.0 Cherokee thermo housing which is a KILLER swap for your 4.2
> > thermo housing if you have aftermarket fuel injection that needs a
> > coolant temp sensor, the stock location was of course... in the intake
> > which no longer is heated by coolant in my case. The valve cover is a
> > 4.2 which technically shouldn't fit on a 4.0, I milled the alignment
> > ridge and used a late 4.0 (stamped steel cover) rubber compression
> > gasket, worked great. I used the 4.2 because I wanted a place to bolt
> > (the old cleaner housing bolt triangle) the custom cold air intake
> > tubing (not shown) so I could rout it over to the cooler side of the engine.
> >
> > Also as with any swap there were bracket issues, my PS bracket is
> > chopped gusseted down low and no longer bolts to the intake. I ground
> > clearance for the header, and the intake doesn't seem to need the
> > support with extra large thick washers keeping it torqued down
> >
> > --
> > Simon
> > "I may be wrong, but I'm not uncertain." -- Robert A. Heinlein