My Engine Has Thrown a Rod

[mistermaclincoln]

Well, I knew this day would come but I really can't complain, but it's time for a new running gear. Started up the Mark this morning and I heard a knock, knock, knock. Rev the motor and I heard knock, knock, knock and even at idile. It's just time. My plan is to find another running rear with low miles and actually fix some of the problems that I have been having for a long time. I got 234756 mile out of it and got my monies worth. When I find a motor I will post the progress. Any help would be welcome. I am sure that trying to replace a b-head from a c-head is not easy.

Thank you all in advance.

MMM

 

[Markviiiedrea]

You sure it is not just a spun baring or a broken valve spring??

 

[Right on the Mark]

LOL Throwing a rod only means the rod broke,most likely punching a hole in block. If you don't see oil on ground no thrown rod. Just a bad bearing. Still sticks though. Best of luck, engines are cheap.

 

[chris2523]

yeah, sounds more like round knock to me. if you had thrown a rod, it would probably be more severe than just a knock.

 

[Lownslowlsc]

Since 95's had the valve spring problems could that be causing his issue?

 

[Right on the Mark]

Since 95's had the valve spring problems could that be causing his issue?

If he does have a 95 you should always check valve springs if some noise is heard.

 

[Lownslowlsc]

If he does have a 95 you should always check valve springs if some noise is heard.

I checked.

 

[Duck]

I checked.

:headbang::headbang:

 

[Right on the Mark]

I checked.

Are you working on the OP's car?

 

[Lownslowlsc]

Checked as in year. I'm nowhere close to Tacoma.

 

[keVIIIn]

Yea with a "thrown rod" your motor would probably be locked up before you could even rev it..or there would be horrible sounds emitting from it besides just a knocking noise. Eitherway yea cheaper and easier to just replace the engine with a good used one.

 

[Sapperfire]

A lot of people think these engines are toast, when it could be something as simple as timing chain guides

 

[k9t8m]

A lot of people think these engines are toast, when it could be something as simple as timing chain guides

This is true, however, when i thought i had a bad timing chain tensioner in the 94 it had actually spun a bearing.

 

[Markviiiedrea]

This is usually what happens (or similarly) when you throw a rod.



You get awesome parts to hang on your garage wall.:headbang:

 

[Right on the Mark]

This is usually what happens (or similarly) when you throw a rod.

View attachment 828461480

You get awesome parts to hang on your garage wall.:headbang:

Hence the term "throwing" LOL

 

[mistermaclincoln]

I am working some late hours and I wanted to thank all of you for you input. When I started it up it just started making a knocking sound and I assumed it was a rod. Yes, it could be a tensioner, chain or bad bearing. Either way it's really cheaper to just get a new running gear instead of trying to repair it. When I get a chance to look for a new one I will post my progress.

Thanks again.

MMM

 

[KStromberg]

With that sort of mileage I wouldn't be surprised if you have a chain slapping around under the timing cover, but yeah, that is a lot of miles on that engine anyways.

 

[Sapperfire]

If you're going to go ahead and condemn the engine.. before you go thru the effort of pulling it, remove the timing cover and take a peak first.

Timing chain guides and tensioners aren't that expensive and easy enough for a home-tech to swap. Just zip-tie your chain in a few places before you remove anything

 

[Lownslowlsc]

If you're going to go ahead and condemn the engine.. before you go thru the effort of pulling it, remove the timing cover and take a peak first.

Timing chain guides and tensioners aren't that expensive and easy enough for a home-tech to swap. Just zip-tie your chain in a few places before you remove anything

This. It would be absolutely silly of you to not inspect it first. I'd much rather spend a hundo vs 5-800 on a motor plus all the aggravation that replacing one entails.

 

[Spree]

Now you guy's have me wanting to change my guides and tensioners.....damit!

 

[Lownslowlsc]

Now you guy's have me wanting to change my guides and tensioners.....damit!

If it ain't broke...

 

[Markviiiedrea]

If you're going to go ahead and condemn the engine.. before you go thru the effort of pulling it, remove the timing cover and take a peak first.

Timing chain guides and tensioners aren't that expensive and easy enough for a home-tech to swap. Just zip-tie your chain in a few places before you remove anything

*Adding your picture for refrefrence*

 

[PenGun]

Bang bang bang with more noise at RPM will at most be a rod bearing. We had a BSA Gold Star rod and piston displayed on the wall at my favorite MC shop when I was a kid. It was bent into the shape of a U and it was difficult to understand how it could ever get like that. That was a thrown rod.