Mitsubishi Montero & Montero Sport This sport utility vehicle offers more size than the other Mitsubishi SUVs, but manages to keep a sporty look and comfortable feel, unlike many larger SUVs.

1989 Montero W/ 3.0 V6

Old Jun 17, 2024 | 03:29 PM
  #1  
Tony Saprano's Avatar
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Default 1989 Montero W/ 3.0 V6

Hello Everyone- I scored a rebuilt 3.0 v6. It was sitting on a shop shelf for the past 20 years....

Installed new Water Pump, Oil Pump, and getting reading to install the timing belt. I turned the crank a smidge to TDC. Now I need to turn the cams to the timing mark. BUT before I do, need your help to confirm something.

So as not to damage anything, would I simply loosen the rocker arms - and rotate the cam - then retorque rocker arms? Repeat on the opposite side? Then install the distributor pointed at Cly #1?

Appreciate the advice.

Tony
 
Old Jun 21, 2024 | 08:19 PM
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1960StudebakerHawk's Avatar
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What is your reason for loosening the rocker arms before rotating the cam? Give us more details.
 
Old Jul 5, 2024 | 09:06 AM
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Originally Posted by 1960StudebakerHawk
What is your reason for loosening the rocker arms before rotating the cam? Give us more details.
Some engines have interference between valves and pistons. Loosening the rocker arms is a known way to create more room.

Back to the OP: I don't think it's necessary with these. Just turn the crank slowly, and don't force anything.
 
Old Jul 5, 2024 | 05:52 PM
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Seems to me that if he is rotating by hand, he would notice any interference and just stop turning the crank. If valves do contact piston and "stop" the movement, then he would know to loosen the camshaft at that point.........and see if that allows enough room.
 
Old Sep 3, 2024 | 01:15 AM
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The Gen 1 V6 is not an interference engine. Just line everything up according to the Service Manual. Are you changing cam and crank seals while you are in there?
 
Old Sep 3, 2024 | 06:26 AM
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1960StudebakerHawk's Avatar
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Looks like Tony posted the question, and forgets to check back and reply to those trying to help him.
Wake up, Tony.
 
Old Sep 3, 2024 | 02:19 PM
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Originally Posted by 1960StudebakerHawk
Looks like Tony posted the question, and forgets to check back and reply to those trying to help him.
Wake up, Tony.
Yep. That happens. Those 1st Gen V6's are easy to diagnose once you are around them for a minute
 
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