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Very quiet on here given we are in lockdown!

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daviespaj
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daviespaj PCGB Member
2020/05/01 22:18:54 (permalink)

Very quiet on here given we are in lockdown!


Ok, I haven't had much spare time as I am working from home, but did manage to finally get the engine and gearbox mounted on to stands for cleaning and refurbishment. Getting the engine though a single door into my workshop from the garage proved a little tight. Unbolting the inlet manifold and rotating the engine did the trick. I will do a whole lot of cleaning and strip the engine accessories off ready for a rebuild. Probably will use Ninemeister for the rebuild? I did consider trying to rebuild it myself (I am an engineer and have done a number of 'normal' engines in the past). However the Porsche engine is not quite like most standard engines and I could cause a whole heap of trouble if I get it wrong!
 
 
 
 
post edited by daviespaj - 2020/05/01 22:31:02

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964 C4 Coupe in restoration
997 C2S
BMW 330d Xdrive touring (all rounder)
Mini Cooper S (wife's all rounder)
Saab 93 Convertible (wife's summer toy)

9 Replies

vitesse
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vitesse PCGB Member
Re: Very quiet on here given we are in lockdown! 2020/05/02 09:11:18 (permalink)
Engineers don't get it wrong,they just get their threads crossed!

1986 924S Stone Grey.
1987 924S Guards Red
2004 BMW 530D SE Touring Chiaretto Red
1966 MGB GT B Racing Green.
Dekker
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Dekker Guest of the Club
Re: Very quiet on here given we are in lockdown! 2020/05/02 11:45:51 (permalink)
There are many books out there about how to rebuild an engine, aren't there?

David Bladon
964 C4 Cabriolet Cobalt Blue
964 C2 Coupe Marine Blue
SAAB 900 T16 Ruby 1993 all weather
daviespaj
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Re: Very quiet on here given we are in lockdown! 2020/05/02 20:24:42 (permalink)
I did purchase one of the books on rebuilding a Porsche engine, it is essentially based around the 3.2 engine rather than the 964 3.6 engine. I guess much is the same, but it's the inside knowledge a specialist would have on this particular engine especially around oil leak prevention (particular problem on the early generation engine). I am still a little on the fence, let's see how the strip down goes? Can't cross any threads while taking it apart (lol)! 
Cheers
Peter

964 C4 Coupe in restoration
997 C2S
BMW 330d Xdrive touring (all rounder)
Mini Cooper S (wife's all rounder)
Saab 93 Convertible (wife's summer toy)
Dekker
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Dekker Guest of the Club
Re: Very quiet on here given we are in lockdown! 2020/05/03 17:36:10 (permalink)
I understand that the original 964's didn't use a head gasket which in 80% of the cases was OK.
However those 20% suffered excessive oil loss and had rebuilds where a recess was machined in the cylinder head to allow a gasket to be installed. I think my C2 was one of those as it was registered 23/10/89 and had a rebuild at 50k.
post edited by Dekker - 2020/05/03 18:05:19

David Bladon
964 C4 Cabriolet Cobalt Blue
964 C2 Coupe Marine Blue
SAAB 900 T16 Ruby 1993 all weather
daviespaj
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daviespaj PCGB Member
Re: Very quiet on here given we are in lockdown! 2020/05/03 21:29:51 (permalink)
Interesting comments, I was told that in order to fit the later head gasket you had to change the cylinder barrels to the later type? This is why I feel uncertain about having a go myself, what are the various bits and pieces that need to be changed or modified other than bearings, rings etc? Although the engine has completed almost 180k miles it ran well but leaked oil like a tanker on the rocks.  

964 C4 Coupe in restoration
997 C2S
BMW 330d Xdrive touring (all rounder)
Mini Cooper S (wife's all rounder)
Saab 93 Convertible (wife's summer toy)
Dekker
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Dekker Guest of the Club
Re: Very quiet on here given we are in lockdown! 2020/05/06 12:27:22 (permalink)
vitesse
Engineers don't get it wrong,they just get their threads crossed!


 
 
post edited by Dekker - 2020/05/06 12:44:34

David Bladon
964 C4 Cabriolet Cobalt Blue
964 C2 Coupe Marine Blue
SAAB 900 T16 Ruby 1993 all weather
Dekker
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Dekker Guest of the Club
Re: Very quiet on here given we are in lockdown! 2020/05/06 13:25:09 (permalink)
Early engines were built without a cylinder head gasket, and in a small percentage of engines, can leak. Porsche fixed those that were found leaking at that time, with leaking being defined as wet to the touch. In 1991, Porsche updated the production engines by adding a cylinder head gasket, redesigning the cylinder head base, and installing all steel head studs. The 1990-on 964's use a dual mass flywheel, which helps isolate drive-train vibration, however, the early Freudenberg units proved unreliable.  In 1992 Porsche changed to LUK-manufactured units, which have stood the test of time. In late 1993, Porsche added a vent kit for the distributor, to help prevent the dual distributor rubber belt from breaking due to ozone concentrations. There is a $10 kit to add this to earlier 964's. 1989-1991 964's need different spacers on the steering rack if you want to fit 17" wheels. In order to store the top on the Cabriolet model, the rear suspension geometry was changed for all models in 1991, which is important to know if you make any rear suspension upgrades. As a Digital Motor Electronics (DME)-based Porsche platform, 964-owners should consider carrying a spare DME relay (part no. 993.615.227.00, around $22) in your glove-box.
 
Copied from https://members.rennlist.com/jfk964/porsche_964_faq.htm

David Bladon
964 C4 Cabriolet Cobalt Blue
964 C2 Coupe Marine Blue
SAAB 900 T16 Ruby 1993 all weather
Dekker
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Dekker Guest of the Club
Re: Very quiet on here given we are in lockdown! 2020/05/06 15:51:05 (permalink)
I found this forum. Page 2 has contributions from Ray Stobs sadly no longer with us and Boxey who has sold his 964 a few years ago but kept an extensive diary of his work online during his ownership of a white C2 Coupe.
 
http://www.911uk.com/viewtopic.php?t=97139&sid=5b986fb3d8bac88c20cda1d05443504c
post edited by Dekker - 2020/05/06 15:52:23

David Bladon
964 C4 Cabriolet Cobalt Blue
964 C2 Coupe Marine Blue
SAAB 900 T16 Ruby 1993 all weather
daviespaj
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daviespaj PCGB Member
Re: Very quiet on here given we are in lockdown! 2020/05/06 21:25:18 (permalink)
Hi David
Thanks for the couple of links, very useful. I have downloaded the Porsche workshop article and considering purchasing the DVD from Pfixit.

964 C4 Coupe in restoration
997 C2S
BMW 330d Xdrive touring (all rounder)
Mini Cooper S (wife's all rounder)
Saab 93 Convertible (wife's summer toy)
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