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help me build a bulletproof 2.6

Posted By: 87CanadianRaider

help me build a bulletproof 2.6 - 07/18/20 03:18 AM

So I'm getting around to rebuilding my montero. While I have a great rolling chassis, I will be on my 3rd engine (2.6) now. I'd really like to keep this one for a while as finding donor motors is getting hard in my parts.
So I'd like suggestions as to best rebuild tips/parts as I'm taking my newest donor motor down for a rebuild.
ARP studs? copper head gasket?? clearwater non jet head?
Let me know where to put my money.
it will be a stock 88 SWB 4banger to an auto tranny.

Sheldon
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 07/25/20 03:19 PM



ready to overhaul. Any thoughts?

[img]https://flic.kr/p/2jpGYir[/img]
Posted By: rxinhed

Re: help me build a bulletproof 2.6 - 07/30/20 03:10 AM

I'd still follow all the various applicable sections of the Turbo Bible, or:

Build a 2.4L, the 4G64.
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 07/30/20 10:52 AM

Thanks, good call on the turbo bible section, I'll give that a go. Itll stay the 2.6 for now. I take the block to a hot tank this am.
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 07/30/20 10:52 AM

Thanks, good call on the turbo bible section, I'll give that a go. Itll stay the 2.6 for now. I take the block to a hot tank this am.
Posted By: fhuzz

Re: help me build a bulletproof 2.6 - 07/31/20 08:50 PM

I’ve got some spare 2.6 parts that might be of help...
if you’re still running the mikuni carb i’ve got a good bvv and a couple of spare diaphragms...
OEM rear main crankshaft seal (sealed)
a perfect catalytic converter...
a perfect fuel filler hose and mount...
some more parts i can’t remember offhand.
lemme know
Posted By: rxinhed

Re: help me build a bulletproof 2.6 - 08/02/20 01:07 AM

....and like that, fhuzz...
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 08/22/20 01:05 AM

Well my rebuild is going well, bone stock for simplicity of parts. ordered a weber today. I'm done with vacuum lines. have 3 carbs none run worth a damn. not cheap to my neck of the woods but that's the cost for piece of mind.
waiting on balance shaft bearings and the block can go together. itll be good to get another gen 1 on the road again. Thanks Dave I'll keep those in mind!

Sheldon
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 08/25/20 11:23 PM

Well my balance shaft bearings finally made it over the border, I put one into the block and I'd be dammed of the shaft would fit. I tried the other bearing by hand on the shaft and it too was very tight. FSM shows oil clearance should be big enough to throw a cat through so I'm not sure why it's so tight.
Is it possible I need to team or hone these to size? they are oddly 1 pc solid bearings unlike the split bearings I pulled out.

Any ideas are appreciated, otherwise itll be another week and a half from rock auto.
Posted By: MontyMcV

Re: help me build a bulletproof 2.6 - 08/31/20 01:04 PM

There is a PDF on MitsubishiLinks.com on getting the most performance from the 2.6. Might be worth checking out while you're doing the rebuild.
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 09/03/20 03:30 AM

That is a cool read. My current problem is still the balance shaft bearings being tight. I've put a second set in now. I even spent cash on a proper bearing installer. they went in cleanly. but are tight to turn and can barely do it by hand. thoughts? will they settle in or am I doing something wrong.

the clearance on the journals spec out. and the bearings are plenty loose outside the block but get tight when pressed in.
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 09/17/20 12:21 PM

Before and after rebuild. ready to breathe new life in the old girl. should go in next week.

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Posted By: nonkjo

Re: help me build a bulletproof 2.6 - 09/17/20 02:43 PM

Canadian,
I'm probably going to do the same thing if I have to pull the engine do address the flywheel problem. Did you source your rebuild parts on RockAuto or did you use a kit? I've never done a 2.6 before. How did your bearings and crank look? Did you need oversized bearings?

James
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 09/26/20 02:30 AM

This is my first full rebuild. I've freshened up 2 other gen 1s. I do get most of my parts from rock auto. I live on a border town and before COVID, I could ship to just across the border and drive to pick up for cheap.
my donor engine had 170k on it. all journals were within spec, so no oversized needed. I bought the rering kit from rock auto and various other parts. not the complete kit as I didnt change the pistons. the rings I also bought at stock sizing. hardest part was putting in new balance shaft bearings, a very steady hand and 90 bucks worth of messed up bearings later.....
I debated doing the balance shaft delete but after much research here I've decided it was best to leave stock.I was leary because I'm sure a slipped silent shaft chain is what took out my last engine.

also splashed out of a weber carb kit. kinda expensive on the north side of the border but I'm eager to throw out all my vacuum lines.

let me know how yours goes

Sheldon
Posted By: MontyMcV

Re: help me build a bulletproof 2.6 - 10/17/20 03:04 AM

My recollection on the BS bearings is that they are one-piece. I say that, as I recall being surprised that they weren't two-piece. I don't have direct experience rebuilding the 2.6.

One key question for you is why is this the third round? What has gone wrong in the past? Usual consensus has been that if the cooling system is well maintained, and if the timing/BS chains are periodically retensioned, the engine is pretty solid.
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 10/20/20 04:00 AM

Well, my first 2.6 blew a head years ago before I knew anything about them. The second one was a refresh that skipped a balance shaft and blew apart, this is my third engine just rebuilt. Hopefully the last lol.
I put 150 miles on just did an oil change and now that things are broken in a little I started swapping in the weber.
[img]https://flic.kr/p/2jXbx6T[/img]
[img]https://flic.kr/p/2jXg37E[/img]
Posted By: 87CanadianRaider

Re: help me build a bulletproof 2.6 - 10/21/20 01:57 AM

Finally finished. Should have put a weber on years ago. And since I've never been able to figure out how to embed pics. They're attached below

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