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964 info

carreracat

carreracat

New member
Hello All,

I was hoping to pick your colective brains for some 964 info?

Are they all 3.6 litre (apart from the 3.3 turbo) regardles of year
What standard bhp are they
Is the different between C2 & C4
Is the 'bad leaks' reputation justified or are most of them sorted ny now
Is the engine similar to the 3.2 lump with a bigger displacement or are there more fundamental differences
what are the manual gearboxes like
(and any other info you'd like to share!)

Thanks in advance
 
Mark

Here's a few answered,

Are they all 3.6 litre (apart from the 3.3 turbo) regardles of year - Yep, apart from 3.8rs/rsr and 3.6 turbo2
What standard bhp are they - c2/c4 - 250bhp, rs - 260bhp (I think), turbo's (sh1t loads)
Is the different between C2 & C4 - ? - two and four wheel drive.
Is the 'bad leaks' reputation justified or are most of them sorted ny now - most sorted, but remember the youngest will be 12 years old!
Is the engine similar to the 3.2 lump with a bigger displacement or are there more fundamental differences - **** knows, sorry
what are the manual gearboxes like - mine gearbox is as tight as a DA, drive a crap one and you'll know a good one.

regards

Rob

 
Mark,

Pretty much what Rob said.

C2 and C4 differences apart from the obvious 2WD/4WD are the braking system on the C4 uses a high pressure hydraulic system (as does the RS) whereas the C2 is a standard vaccuum servo system. The C4 has hydraulic locks on the diffs and has a form of traction control (called PDAS). The C4 has a slight inherent understeer tendency whereas the C2 tends towards oversteer. The C2 is slightly more agile and more of a challenge for the driver, the C4 is more stable under testing conditions and an absolute peach in rain/sleet/snow.

The 3.6 litre engine is quite different from the 3.2. Dual spark plugs and dual distributors are the main difference and a higher compression ratio. The electronic ignition is different (uses Bosch DME) and the exhaust arrangement is different. The 964 had a catalytic converter as standard (I don't think the 3.2 did).

The manual gearbox is fine. The Tiptronic gearbox was never made available on the 964 C4 - only on the C2. The 5 speed manual gearbox on the C2 is a carry over from the 3.2 (the G50 gearbox) but the C4 uses a unique G64 5 speed box. Gearboxes don't seem to be a problem, although clutches are another matter. The original 1989 C4 had a single mass flywheel which seemed pretty reliable but was a little noisy and from 1990 Porsche fitted a Freudenberg dual mass flywheel. This turned out to be a bit of a disaster and failed at very low mileage. The later cars (and most of the earlier ones now) have a much more reliable LUK dual mass flywheel. Some people have fitted RS lightweight flywheels but this often introduces stalling problems. The original 1989 single mass flywheel is a good compromise though.

Most 964s leak a little bit of oil - ranging from "slightly moist" around the joints to regular drips. The early cars were designed with no head gaskets and would sometimes develop leaks if allowed to get too hot. Common places for oil leaks are at the base of the cylinders, through the head stud holes and from the power steering drive cam seal.

If you get a car with air conditioning there's a good chance it won't work. Most common problem is that it needs regassing but if a vendor tells you that - get THEM to regas it and prove it works. Otherwise repairs can be VERY expensive.

Hope that helps.

Regards

Dave
 
Thanks Gents,
That helps a lot, I wont look too much like an amature when looking for a 964 now that I'm armed with your info!
 
found this: http://www.autoincsports.com/Porsche/964C41/964C41.htm (i know the price seems steep, but you can't get a toyota for that out here!) and took it for a long test drive at the weekend. appears to have the earlier single mass flywheel. engine tuned but not sure to what level, it's going for a pre-purchase inspection this week. it drove very well and i was surprised how forgiving the handling was. during my test drive all was ok but after it was stopped for about an hour it didn't seem to idle too well, dealer told me this was easy to adjust and an easy fix?? does this sound like something to walk away from?

anyway, generally very impressd with the 964 - the ac even works!
i'll post some pics if i take the plunge!
 
sorry more questions!
does anyone have an early 964 with a single mass flywheel?
i have been told by my pre purchase mechanic that all single mass cars don't idle well. is this true? doesn't seem that likely to me but what are your thoughts?
 
Mark,

If the car is an '89 model year ("K" for the year letter in the VIN) then it will have the single mass (19lb) flywheel. This is the flywheel my own car has - and there are no issues with idling. However, if the car has been fitted with the 12lb "RS" single mass flywheel there is most definitely a chance of idling problems. From your description it sounds like the car has idling problems when it is warm but, as I understand it, most flywheel related idling problems appear when the engine is started from cold.

The lightweight flywheel also seems to cause more problems when you come to a stop - i.e. when the engine slows down. The DME cannot react fast enough to catch the engine from slowing below idle speed. In my experience this is not a problem when fitted with the standard '89 19lb single mass flywheel.

Hope that helps.

Regards

Dave
 
Thanks Dave,
I'll find out what flywheel is fitted next week, I'm going to meet the mechanic that carried out the mods. He tells me that there are replacement DMEs that can sort the problem.

Took at look at your car links, that's a great looking car! Do you know if any 964 Carrera 4s came with a wide body from the factory or is this a 993 onwards trend?
 
Mark,

As Rob said, the 30 year Celebration models were all C4 (all 911 of them - actually there were only 898 I believe). They all had turbo body and turbo running gear but no fixed spoiler but with full leather interior and were available only in Silver or Viola. There were a lot of wide bodied cars produced for the US in 1994 pending the release of the 993 but I'm not sure if any of them were C4s.

I know there are quite a few Celebration owners here on the forum.

Mine is now quite unique since, apart from the wide body it's the only C4 in the World in Trophy Yellow!! Somehow I don't think that's quite enough to make it worth a fortune though!! Thanks for the compliment anyway.

Regards

Dave
 
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