MY main question is whats the most amount of milage you can have before you get the rebuild? Anywayz, tommorow I will be removing the piper and checking my compressor wheel. If its siezed up then this weekend I will be getting new turbos..I will keep you guys posted ; )...

 

One Meeleon Miles.

Seriously, it varies from 10k to 100k. Taking proper care is a major factor, but no guarantee.

Dave

 

I think there is an old thread on this somewhere.

 

Paging Mahjik, paging Mr. Mahjik to the front desk.

 

it all depends on how and how offend you service the engine. Excluding the performance parts.

 

i have 98k on my stock engine and turbos. can't say they're in great shape, but i still get pretty decent power. Sometimes the secondary turbos dont come on, usually happens if i've used them too much and they are hot. if i let it cool down it comes back. i still get boost creep up to 13 psi.

im saving for an engine rebuild.....a pretty 5k, ****

 

I'm almost up to 300,000 on my original 93 FD. Daily driven every day

 

BS

 

 

If the location CA means canada, and that's 300k kilometers, maybe. But 186000 miles is about 75000 miles more than the highest number I've ever heard of.

So I call BS too.

 

I believe the I have been one of the lucky few to drive two '94 3rd gens to over 100K on the original engine and turbos. Both served as my daily driver, both were properly maintained and saw most (90%) of these miles on I-35 between Austin and San Antonio. Normal wear took its eventual toll and low compression and hard hot starting served warning of the eventual demise of these engines. Both turbos worked fine until the engines expired but big cracks around the wastegate put them in the bone pile.

 

I had 104K on mine, and compression tested over 90 front and rear, when I pulled it apart for the porting and refresh.

 

If you drive interstate a lot and dont get into the boost much they will last. The problem is VERY VERY VERY few FD's are without boost haha.

One of the main problem with rotary engines is the apex seals start to get brittle around 50K miles. The more power you make the more chamber pressure you have the more likely you are to break a seal....even without detonation. A brittle seal can only handle so much before it snaps.

 

I remember a guy up in maryland I use to see at some of the meets up there had around 120k on the original motor. It didnt last much longer after that though.

 

A local guy I know, Stefan aka "150kFd" on the forum, has 160K+ original miles on his motor (hence his screen name). The turbos have been rebuilt, however. And, believe it or not, he still runs the stock pre-cat! Only mod is a catback exhaust. He's been able to reach that kind of mileage successfully because most of those miles are freeway miles - he drives that car all over the country.

 

Thanks guys im on 70 thousand miles so sounds good to me. My motors in excellent condition beside my turbos which I will be replacing soon...

 

Mine took a dump at 108k

 

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/most-miles-until-rebuild-385219/

 

I think if you keep your engine stock and take care of it well the TYPICAL engine life I have notices is around 90K. This is just for the FD of course.

My first engine, turbo and tranny went out at just over 95K and was replaced under the factory 100K warranty. I'm at 146K now and the factory reman and second turbo is still going strong even after MANY track days. The tranny is starting to make some discouraging noises. Guess I got a lucky with my reman as some are total duds in my understanding.

I know plenty of earlier non turbo model RX7s that have gone over 200K on the original motor.

 

I guess me pulling 140k out of my tranny is good, and the 3rd gear synchro just went.

 

93K until I blew the original AST and overheated the engine. Shoulda gotten an aluminum one. All the apex seals were in great shape and it was getting good compression. I could see a well maintained STOCK rotary breaking 100K. anyhow just 2 cents.

 

112k

 

113k for me, compression was great... coolant seals weren't.

 

i meant to put 130,000. thinking of how many miles total i now have on my daily driver fd. 130,000 figure is mostly freeway driving with little to no boost and no mods on the stock car expect for wrapped dp and ast elim.

 

From my bud Chris Ott over at www.rx7.com who has seen more rx7s come through his shop since 1988 than anyone else I know:

FD=160,000 miles
FC=444,000 miles (n/a of course)