My %#$* MU

by **MrRevhead** » Fri Jun 08, 2012 8:05 am

My crank is of the turbo style. I doubt very much its non turbo.

by **MrRevhead** » Tue Jun 26, 2012 4:44 pm

Right. Spent 3 weeks looking for a crank. Seems it's all the 3.1s being wrecked as thats all anyone has!

Took it back to the engine shop so see if they thought they can do something with the damaged key way.
They are going to machine in a bigger key way and machine a key to suit the bigger key way with a step to suit the pulley.
Best of all they quoted the same as a 2nd hand crank. That doesn't exist :lol:

Should have it by the weekend so will be in the shed Saturday writing up a list of gaskets and orings to order.

by **isuzurob** » Tue Jun 26, 2012 5:59 pm

thats good to hear, machine shop here fills the old keyway and machines a new one into it so it looks standard, have done to mazda gtx cranks for me they have the same issue where fine after they did them

by **MrRevhead** » Fri Jun 29, 2012 10:02 pm

Picked it up today. They managed to drill the broken bolt until it was very thin, and ran a tap down the thread and that sorted it fine.
Machined the key way out to the next size up, and filed the pulley section of it to fit.

So tomorrow I'm sorting things out ready to go back together, writing a gasket list and cleaning stuff.

by **MrRevhead** » Sun Jul 08, 2012 9:02 pm

Decided I might as well put a 2.5" exhaust on it seeing as now is the perfect time to change the down pipe. Where do you guys get your down pipes from?

by **MrRevhead** » Sun Jul 08, 2012 9:10 pm

Ah, sorted the search function:
http://clubisuzu.com/viewtopic.php?f=8&t=2863

Will order one of those and see what the local shop can do! Thinking I might have to put it all back together stock first so they know what room they have to work with though.

by **MrRevhead** » Fri Jul 13, 2012 10:21 pm

Scored a 3.1 oil filter/cooler set up today.
Am aiming to grab the intercooler of the same wreck as well as a MU 2.8 intake manifold so I can fit the cooler.
Have plans for water injection. Little more research needed but I think I can sort a good system for sub $200

So the above, plus the 2.5" exhaust and some more PSI should wake the thing up! Not going to tweak it within an inch of it's life though, just looking to get back what the 33" tyres will suck while adding some safety margins with the water injection.

by **isuzurob** » Sat Jul 14, 2012 6:34 am

my 4jb1 is fine with 33 runs around 12psi i think and modified injector pump, exhaust and intake, can drive taupo to auckland in 5th 100kmh other than slowing down for towns etc

by **MrRevhead** » Sun Jul 15, 2012 6:24 pm

That's rather flat though

I like to tinker, and these few mods will make quite a difference I think.
Order intercooler and manifold off trademe today 8-)

by **isuzurob** » Sun Jul 15, 2012 6:54 pm

Or taupo to wellington in 5th, it cant keep up with my gf modified 4jg2 mu but it goes really good for 12psi

by **geeves** » Mon Jul 16, 2012 4:04 pm

What ratio diffs?

by **isuzurob** » Mon Jul 16, 2012 5:38 pm

im running standard 4.3 diffs in mine

by **Captcol** » Wed Jul 18, 2012 8:00 pm

I must look into water injection again

by **MrRevhead** » Mon Jul 23, 2012 5:02 pm

I'll be sure to post all about it here when I do. Will concentrate on getting it going first!
Didn't even look at it this past weekend as was crewing for a mate in a 500k off road enduro (which he won!)

GF has to work both days next weekend so no distractions!
I have bearings, I have gaskets. Taking old seals into local bearing shop tomorrow to get the crank and cam seals replaced with double lip ones as there are wear grooves in the running surface of each.
Interestingly the cam pulley hub that the seal runs on has the biggest groove by far.

by **BlairNZ** » Tue Aug 14, 2012 10:51 pm

damn, thats got to piss you off! I have a 93 $JB1 engine sitting on the floor in my shed that I thought was all good until I went to use it - decided to replace the waterpump since I had a new one sitting around, only to discover that the keyway on the crank had flogged out in the same fashion. Kinda annoying on an engine that hasnt even hit 150,000km yet!

Good luck with the crank - have you tried the guy on trademe from Rangiora? Think his username is horsenut or something but he seems to be rather knowledgeable and has a plethora of Isuzus and parts...

by **MrRevhead** » Wed Aug 15, 2012 5:32 am

Got my intercooler off him

Crank is all good now, got a new key way machined and the pulleys machined to suit.
Next free weekend I shoukd have the crank in the block

by **MrRevhead** » Wed Aug 29, 2012 9:13 pm

Crank is now in! Finally!
Now just sticking bits back on. Have to play around with a the intercooler and manifold to get them to fit, running new oilcooler hoses as well. Love working in truck parts, silicone heater hose $5 a meter please :twisted:

by **MrRevhead** » Sun Sep 16, 2012 5:41 pm

Holy crap I'm taking too long to do all this :lol:

Will get there though!

Now, the butterfly valve on the intake, what controls that? I think all mines been disconnected. Not overly keen on that

by **geeves** » Sun Sep 16, 2012 6:33 pm

Its attached indirectly to the wastegate and controls overboost. It doesnt look like it was ever fitted on my wizard and has siezed open on my bighorn. A lot of people remove it

by **MrRevhead** » Sun Sep 16, 2012 6:42 pm

Oh on the intake? I thought it was the shut of valve. If it isn't, I'll just bin it. So they only have fuel shut off not intake shut off?

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