1991-1994 240sx: Replacing Timing Chain Tutorial

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vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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Introduction

There isn't a article for the DOHC timing chain replacement. There is a good SOHC article with pics which is very helpful. I'm just assembling bits and piece here. ie Timing chain replacement(SOHC) best and Factory service Engine 1991

Removing upper timing chain cover and valve cover:

The following article covers this topic:

Timing Chain Rattle(1991-1998)

Links dealing with Distributor removal and timing:

Timing Light guide

Timing-Distributor Dist. timing trouble-shootTop Dead Center

Oil Pan Removal:

This link explains procedure. S14 is a bit different than s13. Not an easy step.

Oil Pan Removal



Removing the crank pulley:

If you're working on an engine that was more or less intact (no guide carnage or anything) and the timing is still on, go ahead and rotate the engine to top dead center (tdc) with the crank pulley bolt. Now you need to remove the pulley. I used an impact gun, but if you don't have one, put the car in 5th gear (rear tires must be firmly on the ground and parking brake engaged) and use a 27mm socket and driver/breaker bar to loosen the bolt. Take the bolt out and take the washer off of it, and thread it a short way back into the crank snout. Then use a puller to remove the pulley. DO NOT use a puller without the crank bolt installed! The puller will mess up the threads in the crank snout!!





The KA crank pulley bolt has a recess in the end of it for a crank puller tool. If you are using the 3 claw tool, some of them have a pointed bolt, this will sit very nicely in the recess of the crank bolt. You just have to leave the crank bolt in place but mostly unscrewed. Once the pulley is loose enough, you can take off the tool unscrew the bolt and just pull it off.

- 6 or 8 inch legs will work.-feet behind the second pulley(the one that is raised from the front and rear ones)

Helpful links:

Cam Alignment-jim wolf

Cam Alignment

Random Pictures of ka24de

















Oil Pan





















Timing chain cover







Engine and tranny mounts



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vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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Top timing cover










Modified by vancouverbc at 1:07 AM 1/20/2009

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

Post

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