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HOW TO: Remove upper timing chain guide

42K views 46 replies 25 participants last post by  unijabnx2000  
Harris said:
No repercussions at all. I have been told that Nissan stopped putting them on the SRs in '98.
This is not to be done to an older SER with the old school tensioner.

If you do the mod please get a 98-01 SR20DE tensioner.

If you do not get the new style tensioner you can and will skip a tooth on the cam gears.
 
I listed 98-01 because I am 100% sure these cars came with the updated tensioner. Jus wanted to be clear that everyone got the right part.

There is even a better tensioner and it comes on the N1 SR16VE I will talk to Greg at Mossy and see if he can get them
 
I had a headache reading one long sentence like that.


So, let me say it in my own words. You're saying that because the old tensioner doesn't have the capability to give the timing chain the correct tension it needs, the only thing holding the chain onto the cams in the correct position is the cams. Well, I don't see how the guide would give the chain any tension. If the tensioner has gone beyond its point of keeping acceptable tension, then the guide giving it any tension at that point is useless, as the function of the guide is not to complement the tensioner.

Like I said, I have a picture of a destroyed guide that'll show you that it's worse to keep it than take it out.


I don't question the use of the new tensioner, as I installed one myself back when I had my '94. Now I just recommend taking the guide out anyway without even getting the tensioner due to the fact that the guide can become one scary object in the valvetrain.
If the chain is to loose the chain will skip teeth with the old tensioner or bad tensioner.

I can prove this to you but you will cry.

Take off your valve cover, take out your tensioner to simulate a bad tensioner, then spin the motor over with your hand via the crank.

I guarantee you will start jumping teeth

If a tensioner goes bad this will happen. Many a people have done this same thhong whil changing cams I have helped tons of people on the phone put their car back on timing as it wouls lock up with th valves hitting the pistons.