Need to say goodbye to my BRZ 2017 soon

[CrowsFeast]

Originally Posted by soundman98

with efficiency standards the way they are anymore, the majority of engines now are interference-type, meaning that when spinny bits stop spinning, they get in the way of other bits that haven't stopped yet.

with social distancing the way it is, i haven't heard the exact final diagnosis, but i believe they were saying it needed a new top end at a minimum. i believe the quote was close to $2k...

Usually at the point of needing a top end you're better off doing a long block swap. Even if you're willing and able to do the job yourself you never know what in the bottom end may also be damaged and not necessarily show up right away. 10 kms later you may spin a rod bearing, or that crack in the connecting rod you didn't see/check decides to let go.

However I expect that his question was about how expensive the belt service is (to prevent the engine going boom). That price ranges quite a bit depending on the car. On my old golf I did it myself and decided that if I got high enough in mileage to need to do it again I'd just pay to have it done. Major PITA job (engine mount connected through the middle of the belt circle), but it's worse on the Audi's of that time. For those you have to pull the whole front end of the car off! (bumper off, rad support etc, disconnected, swing it out like a door to get access to the front of the engine).

[Tcoat]

Originally Posted by CrowsFeast

Usually at the point of needing a top end you're better off doing a long block swap. Even if you're willing and able to do the job yourself you never know what in the bottom end may also be damaged and not necessarily show up right away. 10 kms later you may spin a rod bearing, or that crack in the connecting rod you didn't see/check decides to let go.

However I expect that his question was about how expensive the belt service is (to prevent the engine going boom). That price ranges quite a bit depending on the car. On my old golf I did it myself and decided that if I got high enough in mileage to need to do it again I'd just pay to have it done. Major PITA job (engine mount connected through the middle of the belt circle), but it's worse on the Audi's of that time. For those you have to pull the whole front end of the car off! (bumper off, rad support etc, disconnected, swing it out like a door to get access to the front of the engine).

The bottom end of my Talon engine was almost as bad as the top. The shock of impact went through just about every moving part.

[JesseG]

It’s like throwing a grenade in the engine

I’ve also heard that timing chains can also wear out, but probably much less than a belt. And I know there is the famous timing chain fiasco with some Audi engines


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[daiheadjai]

Originally Posted by JesseG

It’s like throwing a grenade in the engine

I’ve also heard that timing chains can also wear out, but probably much less than a belt. And I know there is the famous timing chain fiasco with some Audi engines


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IIRC the Audi issue was due to plastic chain tensioners in some of their engines (which they resolved in an update).

[NoHaveMSG]

Originally Posted by daiheadjai

IIRC the Audi issue was due to plastic chain tensioners in some of their engines (which they resolved in an update).

Same with the Toyota 22RE. It would chew up the guide and then break stuff. Aftermarket metal guides solved that.

[daiheadjai]

Originally Posted by NoHaveMSG

Same with the Toyota 22RE. It would chew up the guide and then break stuff. Aftermarket metal guides solved that.

You'd think critical engine components that experience any amount of friction would be constructed out of sturdier materials....

I only learned about this when I was shopping for a replacement for my wife's Impreza, and the Golf 2.0TSi was in the running.

[Tcoat]

Originally Posted by JesseG

It’s like throwing a grenade in the engine

I’ve also heard that timing chains can also wear out, but probably much less than a belt. And I know there is the famous timing chain fiasco with some Audi engines


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Chains can a do wear out but it takes a long long time and there is usually some warning before they reach the point where they skip and cause damage. Belts however can go from seemingly perfectly fine to snapped or major slip in a heartbeat.

[soundman98]

Originally Posted by daiheadjai

IIRC the Audi issue was due to plastic chain tensioners in some of their engines (which they resolved in an update).

my 4.0L ranger motor is known to have the same issue with the tensioners.