[DayDreamer]

It started out as a radiator replacement and routine belt job. I think it got a little out of hand. The engine has 220 000 kms and was burning a bit of oil. So I figured while its half undone, may as well go the whole hog. Preliminary checks seem to favour me. No scoring on the cylinder walls (been there done that on the 944S2), cams look good, crank healthy.



Here are some quick pics including the leaky radiator that started this slippery process

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[Ryan]

Are you going to put in the newer rods while your in there?

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[tamathumper]

Heck, if you're in that far, you might as well install a flux capacitor!

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[DayDreamer]

No plans to do the rods. I don't race it and unfortunately, being a ROW, higher compression with no CAT or O2 sensor, Flash's SC is out of the question, unless the rods are a couple bucks each, but I doubt it. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[Cloud9...68]

My engine looks just like yours (the fact that it's in pieces, that is). I began taking a lot of pictures at about the midpoint of the disassembly process (relied on putting parts in labeled plastic bags early on), so I have a bit of "reassembly anxiety" in that I'm a little worried that I won't remember where some of the parts go, or that I'll install something incorrectly or backwards. I may be contacting you as I start to work on putting it back together...<BR><BR>How high is your compression? Is it much higher than the standard stated 11.0:1?

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[banditsc]

It's not really a supercharging thing. Porsche has a TSB on those rods and says to replace them if the motor is torn down.

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[flash]

on ROW cars and OEM Cat Delete cars (they are not the same thing), compression ratios are identical to US on the 968 - unlike the 944, they did not make any changes there





on OEM Cat Delete cars, designed for leaded fuel, there is no can and no O2 sensor, so the DME uses the maps specific to that version, which tend to run richer than the others, which makes it "feel" like there is more compression on part throttle - the WOT output numbers are the same

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[DayDreamer]

Cloud : I am not doing the work myself... Its been done by a Porsche specialist garage. I asked them about the pile of nuts and bolts and they joked about guessing where they go and throwing away any left over bits <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" /> They did my 944s2 engine 5 years ago and its still running strong so I trust them <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />



I'll speak to them today about the new rods and see whats up. In for dime, in for a dollar!!



Flash, In 92 we did not have unleaded so I know the CAT was removed, when, i don't know.. I do know a lot of imported cars (mercs etc) had the cat cutout because of the 'bad' fuel. I do see that the exhaust was modded and o2 sensor nipple is unused. More likely done after delivery and not at the factory.

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[flash]

just to be clear, that little bung isn't the O2 nipple - the O2 sensor screws in from the top, and is considerably larger diameter than that, but i definitely don't see it in the shot



if they put in the resistor, then you are running on the Cat Delete maps - if they didn't, then you are running on either the US or ROW maps - in an ROW car, you don't have the check engine light, but if it were there, it would be lit if the O2 sensor was deleted and no resistor installed



it would be interesting to see how it ran - does it rev past 6k? have you ever had a hammer or durametric plugged in?

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[tamathumper]

From the picture I wouldn't expect that's a factory job, being at a sharp angle and kind of looking like something *I* welded.



It would be fun to see it in person the next time I'm in Jo'burg.

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[RS Barn]

The little fitting is for measuring HC. The ROW cars had an idle fuel adjustment.

I haven's seen a factory Cat Delete pipe but I'm betting that isn't one

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[DayDreamer]

Engine cleaned and measured. All is within spec and no damage. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" /> All parts are cleaned and assembly starts next week. I had a long chat to my builder and I'm sticking with the old rods. This my daily driver and does not see any track stresses so the current rods will be fine.

I'll find out what the deal is with the DME and how it manages the non O2 and CAT configuration.

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[DayDreamer]

Engine assembly is complete and back in the car. It started for the first time yesterday. It should be all ready for collection next week.



On a side note, the non factory CAT and O2 sensor delete was compensated by adding a pot or bridge in the ECU to create a closed loop.

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[Cloud9...68]

Looks great! Do you have any more pictures of the engine during the assembly process by chance? I'm rebuilding mine myself (waiting for the head and crank to come back from separate shops), and while I did my best to take pictures during the disassembly process, there are a few steps where I forgot to, so I have a bit of "reassembly anxiety," so if you have any additional pictures, I may bug you for them when I get ready to put everything back together. Thanks.

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[tamathumper]

Congratulations! <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[DayDreamer]

Cloud : I drop past the garage every few days to check the progress. They did say that they had taken pictures too. I see if I an get them and see if they are of any value.



My wife is Driving the 944S2 while her is car is in the garage. I'm driving the Land Rover and have already smacked two height restriction boards at parking lots, and one concrete roof. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" /> I can't wait to get it back on the road



I just wanna Drive!!!

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[DayDreamer]

Slight delay:

The clutch master cylinder was heavily corroded and needed replacing...

Odd ticking/rattle at idle was identified as the DMF. It has some free play. New one arrives tomorrow.



Other items added to the list while the car is in the air

New tie rod end.

New Fuel Filter

Spray the Vanity Cover Red

New Wiper motor - Old one grinds like hell

New Cover over wiper motor etc

New torsion bar bushes

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[Lear35A]

Cloud9...68

Not to worry. I've got more pictures than I can count, and I'm taking more as I reassemble now. Let me know what you want.

BTW, I am not replacing rods. If Porsche wants to recall mine and give me new one, fine. Otherwise these will just have to do.

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[Cloud9...68]

Thanks, Lance. I'm dead in the water, though, waiting for my crank and head to have their respective work completed. The machine shops in Austin are unbelievably backlogged. So no telling when I will be able to start the re-assembly process.

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[DayDreamer]

Everything buttoned up and ready to rock. Went for the first long drive through the countryside. This car is quick, even at high altitude. Its amazing how much 120 000 miles can take from an engine.

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