I just got an 1987 and it has about 93,000 miles on it and i heard that around 100,000 the engine tends to blow. Is that true or is it a myth?

 

Mostly a myth. Is it N/A or turbo? My N/A lasted until 140k miles and I know many others that have lasted well beyond that. It's all a matter of how well it was previously maintained.

If you are concerned have a compression check done to alleviate some of your concerns.

 

It really depends on how well the engine was taken care of and such. But generally if it was just so-so maintenence it will probably go past that, but if it was poorly maintained then it probably will go.

There are many parts that could fail to cause a blown engine and those could range from coolant ring to a blown apex seal.


So, I guess to answer your question: It's not a complete myth but, is it no means accurate.

 

fact, sometimes.
Myth, mostly

It all depends on how the engine was taken care of. There are fine examples of 13B engines with over 200K miles on them, as well as plenty of examples of blown motors with only 60K on them.

But then I have seen factory stock GM V8s blown all to hell with 30K miles on them. Does that mean that GM builds a engine that will blow up every 30K miles??? Probably not. Not anymore than a rotary with 100k miles on it.

Did the oil get changed? Did the owner drive the car or did it sit? Did the owner change the coolant and filters every couple of years?

If the car has not been maintained cosmeticly it is a good candidate for early engine failure, as if they didn't take care of the exterior/interior chances are they didn't care enough about the car to maintain the engine and driveline.

 

Depends on the car.

a NA RX will go to 140k easy.
I have a 88 SE with 152k on it which starts and runs good.

My 88 GTU just hit 102k and runs pretty good although it has starting problems sometimes while my SE starts instantly.

I see a lot of TII's for sale w/ 120k on them but I am guessing they are on their way out.

When I get a TII. I hope to get one with 70k on it so I have some good mileage to save up for a rebuild.

 

I have a 86 fc n/a with 155000 and still going,Do how ever have a 3800rpm hesitation

 

I completely agree with everyone who posted above me. It all depends - imho. How much TLC (tender loving care) did the RX7 receive from its previous owner(s)... was there a rebuild performed on the engine? what was the maintenance schedule like (if any)?

 

My engine has almost 159k miles on it and still going.

 

it all depends on how well the car was taken care of and how hard it was pushed. so a little of both, i'd say

 

Over here, 146k miles and still ticking.

 

184k mi. Smokes a lot at down shifts.

 

try thicker oil