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93 Mu exhaust replacement - 4jb1-t

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93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Sat Apr 18, 2015 8:56 pm

Hi, I've opened a can of worms with my latest mod, installing a new exhaust on my 93 Mu and after a long search I found a 3" dump pipe new for $175. This was great until I started installing it.
What I need now is to remove the old studs that held the last dump pipe on as they are too long
Replace the oil filter housing with one from a bighorn 3.1 4jg2...
Looks like the dump pipe I got will need to be cut shorter so a 2.5" bend can be welded in.

That's it so far...
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SamMu93
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Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby pig75 » Sun Apr 19, 2015 6:54 am

Stud removers ain't dear or you can just use two nuts locked on the stud two remove the stud. If the studs are two tight i would just drill the thread out of some old nuts and pack the studs out just like thick washers
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Sun Apr 19, 2015 8:51 am

Tried the two nut trick, even gave it a go with 3! No luck there. Might need to heat it up or I might try to thread the rest of the stud and cut the excess off.
This is with some nut spacers...
SamMu93
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Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Sun Apr 19, 2015 8:53 am

The spacer setup that Im not real keen on
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SamMu93
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Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby pig75 » Sun Apr 19, 2015 9:12 am

Might be easer to just re thread the rest of the stud with a die nut
92 MU, 91 MU ute, 90 MU, 96 Wizard,2012 Dmax LSU, 14 MUX
Australia's loudest MU
MY SITE MY YouTube SPL 152.3dB
If beef is in beef mince, What is in pet mince?
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby isuzurob » Sun Apr 19, 2015 11:45 am

I just ordered the 2 1/2 full system off lukey exhausts for my rodeo, the dump pipe you brought removes the cat on the 4jh1, also there is more room around the firewall of the ra rodeo, a oil filter setup of a 4jb1-t 98 onwards rodeo will fit your engine also
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Sun Apr 19, 2015 1:00 pm

The dump pipe removes the cat on the 4jh1? Are you talking about the quick warmup valve in the origional dump pipe?
Ill have to try and find a picture of tue 98 onward rodeo oil filter housings- need one the has the oil filter pointed down unlike my current one
SamMu93
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Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Sun Apr 19, 2015 1:06 pm

This is the origional
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SamMu93
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Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby turnturn » Sun Apr 19, 2015 7:53 pm

I found an aerosol product called "P B Blaster" to be a better product than CRC when recently removing some exhaust manifold studs (the same ones as you are dealing with).
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Snorkle, Intercooled
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Mon Apr 20, 2015 9:51 am

i think this is the 4jg2 oil filter housing - can someone confirm??
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SamMu93
Isuzu Junior
 
Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby MrRevhead » Mon Apr 20, 2015 1:03 pm

turnturn wrote:I found an aerosol product called "P B Blaster" to be a better product than CRC when recently removing some exhaust manifold studs (the same ones as you are dealing with).

Actually CRC is pretty rubbish for properly stuck stuff.
Best 2 I've found is Chemz penetrate (not crc penetrate) and Cyclo Breakaway.
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby turnturn » Mon Apr 20, 2015 1:23 pm

SamMu93 the picture of the 4JG2 filter housing that you show above looks like it may point the filter towards the front of the vehicle?
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Snorkle, Intercooled
1996 Isuzu Mu 3.1 Manual (UCS69)
Completely Standard

Re: 93 Mu exhaust replacement - 4jb1-t

Postby Dinger95 » Mon Apr 20, 2015 1:26 pm

SamMu93 wrote:i think this is the 4jg2 oil filter housing - can someone confirm??

Both of the 4jg2 I have seen had the filter angled towards the rear, where-as that one is angled to the front.
Image
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Mon Apr 20, 2015 3:04 pm

turnturn wrote:SamMu93 the picture of the 4JG2 filter housing that you show above looks like it may point the filter towards the front of the vehicle?


Yeah that was one of the image results when you google "4jg2 oil filter housing". It would point forward aswell so not ideal.
I have had some luck with trademe today and managed to get one for $30 so no big loss if it doesnt work out.
This should arrive this week all going well Ill get it installed and fill it back up with oil.

Also the spray I tried to use and free the turbo studs with was chemz penetrate which helped me snap 2 of the studs... Still have 80% of the stud length so ill try to thread the rest of the stud with a tap and die set. Altho Not sure if I will be able to as the studs are hardened steel right? Will give it a shot...
SamMu93
Isuzu Junior
 
Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby SamMu93 » Mon Apr 20, 2015 3:09 pm

Hammer hands at work here
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SamMu93
Isuzu Junior
 
Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: 93 Mu exhaust replacement - 4jb1-t

Postby isuzurob » Mon Apr 20, 2015 4:08 pm

4jg2-t and 98 onwards rodeo oil cooler and housings are the same design, the rodeo one just has a smaller oil filter and thread is differnt for the filter, the dump pipe you got removes the cat for emissions on the 4jh1, i got the full 2 1/2 with 2 1/2 dump pipe for my 01 4jb1-t rodeo
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby geeves » Mon Apr 20, 2015 5:22 pm

pb blaster is very good. An American test rated it second only to a home brew of 50%atf and 50%acetone. If that stuff doesnt loosen it it isnt meant to loosen but it will also take the skin off your fingers and eat through rubber gloves.
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby dani4jb1t » Tue Apr 21, 2015 9:56 am

I would heat the housing up with oxycutting...then brake the studs off using two nuts a good pair of spanners and/or a braking bar....If you lack of room there, I would suggest removing the whole exhaust manifold...BUT probably you´ll get the same issues with some of their nuts. Bingo!

Anyways the oxycutting makes this job easy.
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby dani4jb1t » Tue Apr 21, 2015 9:58 am

SamMu93 wrote:i think this is the 4jg2 oil filter housing - can someone confirm??



That´s the one, but it's pointing the wrong side.....Personally I've never seen a filter housing like this one,but probably the picture is upside down.
Last edited by dani4jb1t on Tue Apr 21, 2015 12:50 pm, edited 2 times in total.
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Re: 93 Mu exhaust replacement - 4jb1-t

Postby MrRevhead » Tue Apr 21, 2015 11:35 am

Could be a truck one
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