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Old 02-20-2013, 09:23 AM   #6946
elsalvadorklr
southern xr rider
 
Joined: Nov 2008
Location: Columbus, GA
Oddometer: 4,123
Heeeeeeeeeeeeeelp!

damn guys dint mean to bum any of you guys out

hey I need some REAL help here

I found out my mitusbish montero 2.6l gas 4 cylinder had head corrosion...some of the water passages needed welding,but its not cracked! so my question is this

Im not familiar with this engine however it is a very simple durable design same as dodge raider for you guys in the us.

it is an inline single overhead cam design

my question is the rocker arms and design look the same as my xr600, in other words the lifters are adjusteable with the locknut and screw design

however Im getting conflicting opinions on how to adjust after a complete head rebuilt including valve seats, GUIDES etc...

its obvious if they have adjuster that they need to be adjusted but how does this compare to adjusting our valves?

I also need to retorque the head after a few miles to prevent head warpage and another blown gasket.

Im going to replace all head bolts with new 12.9 grade ones so I dont have this issue as the previous owner decided it was a great idea to mix and match grade steel and hex and allen bolts too!

PLEASE any input is greatly appreciated

christian
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Old 02-20-2013, 10:02 AM   #6947
cyclewizard
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Quote:
Originally Posted by elsalvadorklr View Post
damn guys dint mean to bum any of you guys out

hey I need some REAL help here

I found out my mitusbish montero 2.6l gas 4 cylinder had head corrosion...some of the water passages needed welding,but its not cracked! so my question is this

Im not familiar with this engine however it is a very simple durable design same as dodge raider for you guys in the us.

it is an inline single overhead cam design

my question is the rocker arms and design look the same as my xr600, in other words the lifters are adjusteable with the locknut and screw design

however Im getting conflicting opinions on how to adjust after a complete head rebuilt including valve seats, GUIDES etc...

its obvious if they have adjuster that they need to be adjusted but how does this compare to adjusting our valves?

I also need to retorque the head after a few miles to prevent head warpage and another blown gasket.

Im going to replace all head bolts with new 12.9 grade ones so I dont have this issue as the previous owner decided it was a great idea to mix and match grade steel and hex and allen bolts too!

PLEASE any input is greatly appreciated

christian
They adjust just like your XR6 .......get the piston to tdc and adjust each one that way.
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Old 02-20-2013, 12:27 PM   #6948
elsalvadorklr
southern xr rider
 
Joined: Nov 2008
Location: Columbus, GA
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do you do all intake and then all exhaust or do you go by piston individually

?

thanks so much bud

christian

p.s. non related do you have experience jetting for dual headers on the xr6? I went back to stock on my 88...Im guessing I need to jet down on the pilot and up on the main maybe...

still using the flatslide

thanks!
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Old 02-20-2013, 12:33 PM   #6949
mcma111
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You adjust one cylinder at a time. Which ever is at TDC from where you start.

Head torque. I beleive you start at the middle and work towards the ends of the head.
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BMW's
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 02-20-2013, 12:53 PM   #6950
elsalvadorklr
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Quote:
Originally Posted by mcma111 View Post
You adjust one cylinder at a time. Which ever is at TDC from where you start.

Head torque. I beleive you start at the middle and work towards the ends of the head.
thanks man

Im having a hard as hell time finding the torque specs for a dodge raider or montero head bolts

the idiots that put the allens used 100ftlbs and then the other ones where at 60 or so, no wonder I blew a gasket...

so in then out check.

anybody with some INTERNET voodoo wanna help me find the torque specs please? Im usually pretty good at this but man!

brain farting big time...

Im looking for dodge raider, mitsubishi montero generation 1 head bolt torque specs

thanks again boss
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Old 02-20-2013, 01:39 PM   #6951
deejay_xr
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http://www.ebay.nl/itm/Mitsubishi-Pi...f#ht_500wt_969


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Old 02-20-2013, 01:41 PM   #6952
HeadTrauma
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You adjust all the valves on a given cylinder when it's at TDC. It will be easy to see when the rockers are on the cam's base circle since it's an OHC engine.

There is another technique where you adjust only the valves that are completely closed so the engine only had to be turned over two revolutions instead of eight. Which valves get adjusted when depends on the firing order.

I can't verify that these numbers are correct, but it's something I found real quick looking for Montero 2.6L torque specs.

http://www.4x4wire.com/forums/showfl...?Number=929385
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Old 02-20-2013, 01:41 PM   #6953
RoostMaster
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Thumb '85 head on '92 model?

Hey XR People, have been searching for a second hand/spare head for a big fin & porting project, easy question for some here... will a 1985 model head (duel carbs back then?) fit onto my 1992 barrel and engine?

Cheers RooSt
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Old 02-20-2013, 01:41 PM   #6954
mcma111
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I just entered what you have and hit enter and I get :

mitsubishi montero generation 1 head bolt torque specs


http://www.automotix.net/autorepair/...uide-2414.html
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BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 02-20-2013, 01:43 PM   #6955
mcma111
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Next question. Are the head bolts a one time use?
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BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 02-20-2013, 01:45 PM   #6956
mcma111
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http://mitsubishimontero.danielcadam...pecifications/
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BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 02-20-2013, 01:51 PM   #6957
elsalvadorklr
southern xr rider
 
Joined: Nov 2008
Location: Columbus, GA
Oddometer: 4,123
Quote:
Originally Posted by HeadTrauma View Post
You adjust all the valves on a given cylinder when it's at TDC. It will be easy to see when the rockers are on the cam's base circle since it's an OHC engine.

There is another technique where you adjust only the valves that are completely closed so the engine only had to be turned over two revolutions instead of eight. Which valves get adjusted when depends on the firing order.

I can't verify that these numbers are correct, but it's something I found real quick looking for Montero 2.6L torque specs.

http://www.4x4wire.com/forums/showfl...?Number=929385
thanks HT real good stuff,. indeed I have been on that site before but my computer was just being more dumb than even myself...I couldnt find it

I found out after posting this previous question that the REVISED torque is 80ftlbs...hot or cold...as blown head gaskets were an issue with the lesser torque spec

you guys are reall good and thanks

deejay a but late to order a manual but I will in the futire I need the truck tomorrow to go the restaurant

jejejeje
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Old 02-20-2013, 01:53 PM   #6958
elsalvadorklr
southern xr rider
 
Joined: Nov 2008
Location: Columbus, GA
Oddometer: 4,123
Quote:
Originally Posted by mcma111 View Post
apparently the ALLENS ARE STOCK! jajajajajaja either way the po screwed me

Im getting new ones as a set $70 for 10 of them

whatever cant risk having my truck fail me to go to the mountains

geeeeeeeeeeeeeeeeze
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Old 02-20-2013, 04:12 PM   #6959
elsalvadorklr
southern xr rider
 
Joined: Nov 2008
Location: Columbus, GA
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well got the bolts, they were hex, whatever,m they are new.

see what happens tomorrow

now for an xr related question...

has anybody ever bought gasket donuts? you know the copper ones for the exhaust ports? BUT at an autoshop or over the counter somewhere?

My left port is leaking...I jiggled and git the right one to seal again, but not the left port

I got 3 pinhole leaks in the muffler but most important at the port...

also

Im down on power bigtime which is a bummer...so I got to rejet yet again and see if maybe I can get some power back

Im really at a loss as to what jetting these headers will need with the MIKUNI flatslide as well its just a different beast all together...

Im guessing at a minumum I need to fatten up the needle and main jet...I can start and restar pretty damn well and idle is smooth as butter...

so does this sound good to you guys?
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Old 02-20-2013, 04:20 PM   #6960
mcma111
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Christian,

I should have the pipe to head gaskets/seals. I can tape them to a thin card and mail them to you if you want them.
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BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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