993 turbo

[ellisoakbarn]

looking to purchase a 993 turbo what do i need to look out for and what sort of price should i pay

[2 sMoKiN bArReLs]

Make sure it has the power you require before you buy it.

[sportsandclassic]

Just drive a few of them , and find the 1 that feels the best all rounder looks tidy and smart then have it inspected by a opc or independant..

993 are notorious for rusting around the headlamps,windshield and wiper arms...

the steering rack end bushes wear.
Turbos smoke on inital start up if they have not had any check valves fitted as a mod..standard on 996 turbos.

gearboxs suffer a little from bearing failures ....but hey which car doesent ?


Much more than this you will not be able to see until on a ramp.

mike

sportsandclassic

[kennyboy]

look for full service history - OPC or good independent.

huge price range depending on mileage, condition and where you buy it from. £35k to £60k+

Strasse in Leeds have had some of the cheapest 993tt's I've seen.

Edited by kennyboy on Thursday 21st December 22:19

[aceparts_com]

sportsandclassic said:

the steering rack end bushes wear.
mike

sportsandclassic

Is this a straight forward repair?

[silver993tt]

sportsandclassic said:

Turbos smoke on inital start up if they have not had any check valves fitted as a mod..standard on 996 turbos.

mike

sportsandclassic

er...no they don't. Mine have never smoked from start up and doesn't have the check valves, they're not needed. If there is smoke it's likely to be a duff small oil filter or worn valve guides/turbo bearings. I had the oil filter problem confirmed by a German OPC, it's a problem with the valve in the oil filter. It started to appear when the manufacture of OEM filters was moved from Germany to the USA. My K16s which had covered 50k miles never smoked. My new K24s also don't smoke from start up.

[ken993]

I would get a compression test done, that will tell you what sort of condition the engine is in, a top end rebuild is £5 to £10k.

Turbo's often need a refurb between 50k & 60k miles, that's about £2k.

I would avoid cheap ones, they will work out very expensive in the long term.

[sportsandclassic]

Err yes they do in some cases the oil gets into the turbo chargers because they are so low down on the engine that the weight of oil in the tank causes it to seep through the spindles in the turbos and then into the intake pipe off the turbo when stood still...

I have seen 2 turbos replaced at an opc for this and still do the same thing...switch it off leave it over night come back in the morning pull the outlet pipe off the turbo charger and its full of oil its coming down the high pressure feed into the turbo.....thats why 996 have check valve and the fail on 996 tt too!!

I have seen this on 2 993tt and 1 996tt the check valve had failed in the 996tt fixed that 1 in no time.
The 993tt had 2x turbos and still smoked heavily on start up.eventually we found out about these valves and sorted the problem.....we could not find a check valve anywhere internal to the engine in the oil flow diagram....as you would think it would of done this from day 1 ? but alas we spoke to porsche and they agreed fit the check valves off 996tt and all cured.


mike

sportsandclassic

[sfl993t4]

I've got the check valves on mine to prolong the life of the new turbos (by preventing oil drain down which apparently eventually burns and pushes the shaft seals up). No smoke at all, but then maybe there wouldn't be on new turbos. The old turbos were replaced at 60K due to shaft seal failure, which appears down to gradual oil drain. The check valves also have little gauze filters (which may or may not add some extra protection to the turbos).

Steve

[singh911]

New steering rack is probably around £800.

Door straps can be weak.

Shocks need replacing at around 40k miles.

IMO its one of the best looking porsches ever. You could probably get a 996TT for similar money; one is more capable, the other more desireable.

all imo

Ajit.

[silver993tt]

sportsandclassic said:

Err yes they do in some cases the oil gets into the turbo chargers because they are so low down on the engine that the weight of oil in the tank causes it to seep through the spindles in the turbos and then into the intake pipe off the turbo when stood still...

I have seen 2 turbos replaced at an opc for this and still do the same thing...switch it off leave it over night come back in the morning pull the outlet pipe off the turbo charger and its full of oil its coming down the high pressure feed into the turbo.....thats why 996 have check valve and the fail on 996 tt too!!

I have seen this on 2 993tt and 1 996tt the check valve had failed in the 996tt fixed that 1 in no time.
The 993tt had 2x turbos and still smoked heavily on start up.eventually we found out about these valves and sorted the problem.....we could not find a check valve anywhere internal to the engine in the oil flow diagram....as you would think it would of done this from day 1 ? but alas we spoke to porsche and they agreed fit the check valves off 996tt and all cured.


mike

sportsandclassic

It's a problem with the small oil filter. There is a check valve in that item. Quite a few are faulty and many shops recommend replacing one or more turbos when the smoking starts. DO NOT DO THIS. Replace the small oil filter, you may need to make several replacements until a functioning item is found. It costs about £10 instead of about £3000 for turbos