Re: Exhaust Manifold/Intake Manifold mPi, continued.
 

Not at this time on the 4.0L head. I wanted to get through one of these MPI
installs first. Then maybe later. I'm learning as I go so I don't want to
put too much on the plate.

bill

"serg" <none@none.com> wrote in message
news:RLB1b.4247$zZ5.2039@newssvr25.news.prodigy.co m...
> hahah! i still remember working on the jeep on the student housing parking
> lot....had to sneak around so the manager wouldn't get mad....those were
the
> days....
> u sure u don't want to install that 4.0 head?
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message
> news:bi6ott$5j5ue$1@ID-193866.news.uni-berlin.de...
> > Hi Serg,
> >
> > I'm in South Orange County Ca. I have an appt in Newport Beach where
I
> > seem to be successfully sliding this MPI installation by my appt manager
> :-)
> >
> > bill
> >
> >
> >
> > "serg" <sfon@yahoo.com> wrote in message
> > news:934d0785.0308221406.28d36d0@posting.google.co m...
> > > bill-where in california are you? i'm in the sf bay...
> > >
> > >
> > >
> > > "William Oliveri" <wuji@bigvalley.net> wrote in message
> > news:<bi44i1$54c5r$1@ID-193866.news.uni-berlin.de>...
> > > > Jeff, you are in California and have the 4.0L head on a 4.2L? Did
the
> > smog
> > > > nazis not see this? This is not permitted under California law is
it?
> > > >
> > > > I have the 4.0L head available but didn't put it on this time.
> Perhaps
> > next
> > > > time I'll put it on.
> > > >
> > > > Thanks,
> > > >
> > > > bill
> > > >
> > > > "Jeff Strickland" <beerman@yahoo.com> wrote in message
> > > > news:vk9sfrt1i68he3@corp.supernews.com...
> > > > >
> > > > > "serg" <sfon@yahoo.com> wrote in message
> > > > > news:934d0785.0308201400.68fb2e86@posting.google.c om...
> > > > > > i'm actually taking the engine to the shop to get it rebuilt!
the
> > > > > > install looks pretty easy, like you said, a swap of the intake
> > > > > > manifold. i've been doing a lot of reading up on other people's
> > > > > > installs and it shouldn't be too difficult...
> > > > > >
> > > > > If you are going in for a full rebuild, the shop should be able to
> > install
> > > > > pretty cheaply, or give the motor back without the manifolds, and
> you
> > can
> > > > > complete the project.
> > > > >
> > > > > While the rebuild is taking place, you might want to see if you
can
> > have
> > > > the
> > > > > head swapped for one from a 4.0. The intake track is much better
on
> > the
> > > > 4.0
> > > > > than the 4.2 head. The difference is the intake ports on the 4.2
> makes
> > a
> > > > 90°
> > > > > bend to get to the valve, but the 4.0 head only makes a 45° bend.
> The
> > > > softer
> > > > > bend increases the air flow, which improves the power.
> > > > >
> > > > > Have your rebuilder install the harmonic balancer, or leave the
old
> > one
> > > > off
> > > > > so you don't have to remove it. When installing the CPS to the
front
> > of
> > > > the
> > > > > oil pan, be sure to add a couple of washers to retard the timing a
> > couple
> > > > of
> > > > > degrees. The MPFI kit will demand premium gas, and is prone to
> > pinging.
> > > > The
> > > > > washers under the CPS help to prevent the pinging. I don't know if
> the
> > > > > washers are needed with the 4.0 head, or not. I would rent an
engine
> > stand
> > > > > while installing the MPFI, then drop the entire motor into the
> engine
> > bay
> > > > > with the exhaust manifold/header installed.
> > > > >
> > > > > Somebody recommended that I relocate the fuel delivery pipe from
the
> > > > > passenger side frame rail to the driver side frame rail, I think
> this
> > was
> > > > a
> > > > > worth while effort. The with the fuel delivery up the passenger
side
> > frame
> > > > > rail, you will need a cross over hose that is difficult to protect
> > from
> > > > > passing branches and logs. Moving the fuel pipe to the driver side
> > frame
> > > > > rail causes the pipe to meet up prefectly with the fuel tube that
> goes
> > to
> > > > > the injector rail. Since you have an exposed frame, this part of
the
> > job
> > > > > will be very easy, and worth the effort. (The difficulty in
> protecting
> > the
> > > > > cross over hose is that the fuel rails come down the back of the
> > motor,
> > > > and
> > > > > getting from the right side near the front to the left side near
the
> > back
> > > > > brings the hose pretty near the exhaust system, and requires
several
> > feet
> > > > or
> > > > > hose. When the fuel pipe is moved to the left side, you only need
a
> > few
> > > > > inches of hose, and it is well away from the exhaust system. Some
> guys
> > > > > follow the brake pipe from the right side to the left side, but my
> > Jeep is
> > > > > pretty well scratched and bent near the path of the brake pipe.)
> > > > >
> > > > > Be sure to apply the certification stickers because the Smog Nazis
> > will
> > > > have
> > > > > a field day when you show up for the inspection. Your smog test
> should
> > be
> > > > > based upon the '94 YJ after you get done. Even with the cert.
> > stickers,
> > > > > there will be a guy on the machine may not know how to deal with
> your
> > > > > system. The sticker has a number on it (D-365, I think), the guy
> MUST
> > look
> > > > > in his regulation book and find this number (whatever it is). the
> > > > regulation
> > > > > book will tell him that all of the stock stuff should be gone, and
> all
> > of
> > > > > the kit stuff should be there, then to calibrate his machine to
give
> > > > results
> > > > > of a '94 engine. My local smog guy still managed to screw it up,
> even
> > > > after
> > > > > I helped him read the book. It took a phone call to the state
> > regulators,
> > > > > and a retest to get squared away. The retest was free because the
> > original
> > > > > test was not performed correctly.
> > > > >
> > > > >
> >
> >
>
>

Re: Exhaust Manifold/Intake Manifold mPi, continued.
 

Not at this time on the 4.0L head. I wanted to get through one of these MPI
installs first. Then maybe later. I'm learning as I go so I don't want to
put too much on the plate.

bill

"serg" <none@none.com> wrote in message
news:RLB1b.4247$zZ5.2039@newssvr25.news.prodigy.co m...
> hahah! i still remember working on the jeep on the student housing parking
> lot....had to sneak around so the manager wouldn't get mad....those were
the
> days....
> u sure u don't want to install that 4.0 head?
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message
> news:bi6ott$5j5ue$1@ID-193866.news.uni-berlin.de...
> > Hi Serg,
> >
> > I'm in South Orange County Ca. I have an appt in Newport Beach where
I
> > seem to be successfully sliding this MPI installation by my appt manager
> :-)
> >
> > bill
> >
> >
> >
> > "serg" <sfon@yahoo.com> wrote in message
> > news:934d0785.0308221406.28d36d0@posting.google.co m...
> > > bill-where in california are you? i'm in the sf bay...
> > >
> > >
> > >
> > > "William Oliveri" <wuji@bigvalley.net> wrote in message
> > news:<bi44i1$54c5r$1@ID-193866.news.uni-berlin.de>...
> > > > Jeff, you are in California and have the 4.0L head on a 4.2L? Did
the
> > smog
> > > > nazis not see this? This is not permitted under California law is
it?
> > > >
> > > > I have the 4.0L head available but didn't put it on this time.
> Perhaps
> > next
> > > > time I'll put it on.
> > > >
> > > > Thanks,
> > > >
> > > > bill
> > > >
> > > > "Jeff Strickland" <beerman@yahoo.com> wrote in message
> > > > news:vk9sfrt1i68he3@corp.supernews.com...
> > > > >
> > > > > "serg" <sfon@yahoo.com> wrote in message
> > > > > news:934d0785.0308201400.68fb2e86@posting.google.c om...
> > > > > > i'm actually taking the engine to the shop to get it rebuilt!
the
> > > > > > install looks pretty easy, like you said, a swap of the intake
> > > > > > manifold. i've been doing a lot of reading up on other people's
> > > > > > installs and it shouldn't be too difficult...
> > > > > >
> > > > > If you are going in for a full rebuild, the shop should be able to
> > install
> > > > > pretty cheaply, or give the motor back without the manifolds, and
> you
> > can
> > > > > complete the project.
> > > > >
> > > > > While the rebuild is taking place, you might want to see if you
can
> > have
> > > > the
> > > > > head swapped for one from a 4.0. The intake track is much better
on
> > the
> > > > 4.0
> > > > > than the 4.2 head. The difference is the intake ports on the 4.2
> makes
> > a
> > > > 90°
> > > > > bend to get to the valve, but the 4.0 head only makes a 45° bend.
> The
> > > > softer
> > > > > bend increases the air flow, which improves the power.
> > > > >
> > > > > Have your rebuilder install the harmonic balancer, or leave the
old
> > one
> > > > off
> > > > > so you don't have to remove it. When installing the CPS to the
front
> > of
> > > > the
> > > > > oil pan, be sure to add a couple of washers to retard the timing a
> > couple
> > > > of
> > > > > degrees. The MPFI kit will demand premium gas, and is prone to
> > pinging.
> > > > The
> > > > > washers under the CPS help to prevent the pinging. I don't know if
> the
> > > > > washers are needed with the 4.0 head, or not. I would rent an
engine
> > stand
> > > > > while installing the MPFI, then drop the entire motor into the
> engine
> > bay
> > > > > with the exhaust manifold/header installed.
> > > > >
> > > > > Somebody recommended that I relocate the fuel delivery pipe from
the
> > > > > passenger side frame rail to the driver side frame rail, I think
> this
> > was
> > > > a
> > > > > worth while effort. The with the fuel delivery up the passenger
side
> > frame
> > > > > rail, you will need a cross over hose that is difficult to protect
> > from
> > > > > passing branches and logs. Moving the fuel pipe to the driver side
> > frame
> > > > > rail causes the pipe to meet up prefectly with the fuel tube that
> goes
> > to
> > > > > the injector rail. Since you have an exposed frame, this part of
the
> > job
> > > > > will be very easy, and worth the effort. (The difficulty in
> protecting
> > the
> > > > > cross over hose is that the fuel rails come down the back of the
> > motor,
> > > > and
> > > > > getting from the right side near the front to the left side near
the
> > back
> > > > > brings the hose pretty near the exhaust system, and requires
several
> > feet
> > > > or
> > > > > hose. When the fuel pipe is moved to the left side, you only need
a
> > few
> > > > > inches of hose, and it is well away from the exhaust system. Some
> guys
> > > > > follow the brake pipe from the right side to the left side, but my
> > Jeep is
> > > > > pretty well scratched and bent near the path of the brake pipe.)
> > > > >
> > > > > Be sure to apply the certification stickers because the Smog Nazis
> > will
> > > > have
> > > > > a field day when you show up for the inspection. Your smog test
> should
> > be
> > > > > based upon the '94 YJ after you get done. Even with the cert.
> > stickers,
> > > > > there will be a guy on the machine may not know how to deal with
> your
> > > > > system. The sticker has a number on it (D-365, I think), the guy
> MUST
> > look
> > > > > in his regulation book and find this number (whatever it is). the
> > > > regulation
> > > > > book will tell him that all of the stock stuff should be gone, and
> all
> > of
> > > > > the kit stuff should be there, then to calibrate his machine to
give
> > > > results
> > > > > of a '94 engine. My local smog guy still managed to screw it up,
> even
> > > > after
> > > > > I helped him read the book. It took a phone call to the state
> > regulators,
> > > > > and a retest to get squared away. The retest was free because the
> > original
> > > > > test was not performed correctly.
> > > > >
> > > > >
> >
> >
>
>