Probe Knocking Thoughts

So since the Probe started to knock I have been doing some extensive searching to see what the problem might be. I know that just taking the valve cover off and checking the rocker arms and lifters is a good place to start but from looking online the symptoms seem to point more towards the timing belt tensioner or one of the pulleys. I’ve sourced and compared a few prices for a timing belt kit with a new water pump and the prices vary anywhere from $78(eBay) to $350 depending on where I go. Now this is just to do it myself but if I check local shops and sites like YourMechanic.com I can have the whole job done including parts and labor for $650 which is alot.

My problem is I want to put my own kit together, well somewhat. I want to get the Gates Racing Performance Timing Belt since they are stronger and also because I’ve heard that they make a cool winding up sound. At the same time, if I do the job myself, I want to install an under drive pulley but I’m not sure because of the stories I’ve read. I’ll get into the underdrive pullies in another post later.

I can find the Gates belt for $78 online and the rest of the items might be just better to get a kit and keep the extra timing belt so I guess it’s not so much putting together my own kit.

At the same time, if I do end up doing this myself, I might as well take care of a few other things. I figured that I might as well install some adjustable cam gears and might as well make a day of the project and do the oil pan and gasket since I’ve had the gasket for awhile now. My oil pan has a few dents in it due to the car being driven while it was lowered when I had small 14 inch rims on it.

My next step if it ends up being more of a rod knock is to just get a full rebuild or buy another engine and build it myself with some forged pistons, port and polish, another valve job, port matching all manifolds, upgrading to a bigger throttle body, bigger cams, newer springs and all internals in the head as well as the lower block parts.

I will be adding a page on the site with a list of all the mods I have done as well as a price list for the parts and a list of how much money I have saved and the sources. If you have any questions then please contact me either through my Twitter account or by commenting on one of my posts.

One thought on “Probe Knocking Thoughts”

  1. If it’s more of a rattle and not so much a actual metal knocking sound then it is probably a stuck or shot lifter. I’d start there first because that’s the cheapest and easiest. Depends on the engine but some lifters are easy to take out and replace. I don’t recall working on one of those Probe engines before but I probably have.

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