100K miles. Is yours above or below?



Hi C,
Pretty much bang on.
I'd say by 80k shocks are knackered (some people say renew if older than 60k) and diff probably won't be doing much.
Anti roll bars generally last. Powder coat and fit new bushes and they should be fine.

I guess it's just nice to find a car with the rarer factory options even if they need swapping like on any other non rare option car.

911s are quite tough on shocks, especially the rears with the weight of the engine and the heat off the engine.

So yeah the age they're at now I doubt I'd wait around for M030 or 220 LSD.
A bonus if a car has them though.
I suppose you can always rebuild a worn LSD but if you don't have one to begin with, you have to buy one.

PS I still have those coilpacks I bought from you. Finally getting fitted next month with a boat load of other bits. :thumb:
 
I certainly wouldn't get hung up on mileage if I intended using the car, if it were to be locked away in the hope values increase I'd look for lower mileage.

Knowing what I know now I wouldn't touch a car (approaching 90/100k) without an engine rebuild from a proper specialist, personally I'd rather have an Autofarm or Hartech rebuild as a Porsche replacement engine.

As stated above, come 80k plus mileage other components will be tiring so something with high mileage but looked after IE replacement of suspension parts etc etc could be a good buy if condition is good.
 
I've got a bit of a dilemma as one of the cars I'm looking at had a replacement engine from Porsche (3.4 with single row IMS) due to bore scoring. It's now done 30k on new engine but car is on 90k.
Gearbox rebuild as well and all the M030 kit so it seems good car. Surely lightening can't strike twice....... :?:
 

Great thread. A 911 is a 911 then...

Just bought my second 911 today

:thumb:
 

Thanks for the input. No need to explain, I get it.. Pulled the trigger on a 996 C4s today... it's really surprised me already. Yup straight line doesn't come up as quick but honestly I'm over that.. the way it encourages you to Rev and the way it steers and rides is more me. M3 is a sublime car, it's brilliant. I'm glad I've had one but the 911 is me
 
Nice one BK! Well done. I hope you're happy with it.

Coulstar - a 3.4 with a single row IMS is rare and borescore on a 3.4 is rare too. Is it definitely 3.4 not 3.6?

As for lightning striking twice, yes it can because Porsche just plonked a replacement engine in with all the same design flaws as the one that had went bang.
Having said that if it's a 3.4 just use good oil, changed regularly and when you next have the box out for a clutch etc, just flip the seal off the IMSB and you should be fine *.

If a 3.6 then you can do the same to the IMSB but you'll always have the risk of borescore. A boroscope is wise pre purchase then hope you get a good few years before it gets a hold.

*There are obviously a whole load of other issues the engines can suffer from but where do you draw the line? A 3.4 rarely borescores so if you flip the bearing cover off and also check things like the waterpump don't still look like the original then with a bit of luck you should be ok.
 
Yeah its defo a 3.4. The gearbox is getting or has just been rebuilt at the moment and the owner confirmed that it is a single row. I told him its a perfect time to pull the seal out but not sure if they have done it or not.

Hoping to see it this weekend. On paper a very nice car. I know there is a risk with all these cars at this age but it would appear this is less risk. Only hope I like the colour.
 
Exactly mate, if it checks out and you like it, get it bought.
Will be a bonus if they've flipped the seal though.
Quick sale of your Corrado. I saw your post on the other thread. Nice one. :thumb:
 
Was 85k last week, just passed 87k this week after a trip from Aberdeen to Spa, didn't miss a beat
 
101k on the clocks, but engine is having a rebuild. Also planning on refreshing the gearbox. Even the seats are new and most suspension components were replaced before I bought it, having had it checked out and wax treated at CofG. New fuel pump and lines and coolant hoses, need to check the ones running to the front, so should have a fairly new car under the skin. Still, 101k is high mileage, so completely worthless.
 

Why are you rebuilding?
 


That was on the standard not rebuilt 3.4 motor with the original IMS still in place. It did 306K before it was rebuilt into a 3.7 as the copper count in the oil was heading up fairly rapidly and it had gone fairly soft due to valve seat regression at that point.

I'm slacking at the moment having only done 13K or so since May so won't crack 350K this year but it's going up to the Arctic early next year so that trip should nose it over that mark

From when I purchased the car at just before 100K to when it was rebuilt it had the rev limiter at least once a day, was run on 10K mile service intervals on Mobil 1, did a lot of time on various circuits and was generally well used. It was always warmed up properly before being given some stick but aside from that was far less pampered than a lot of peoples cars. When the engine was stripped the bores were unscored but oval to the limit of what Porsche consider acceptable, pistons were good, cams were immaculate but the valves had stretched somewhat, valve seats were very worn and the chain tensioners were on their last legs.

Here's the measurements:


I think the key here is that it was used every day, did big runs, probably had half the cold starts of a garage queen car and spent a lot of it's time spinning at 4K RPM + which is generally a better place for an M96 engine to be than idle or lumping along sub 2K rpm.

In my experience (I've done over half a million miles in M96 powered cars) the early 3.4L cars are very reliable, even at high mileages. So there is no excuse not to use them
 
I love reading stuff like this having only covered a mere 100k miles. :thumb:
 
Cookies are required to use this site. You must accept them to continue using the site. Learn more...