Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, WERE due Dec 4th, 2022. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

996 C4 engine conversion


Recommended Posts

Hi guy's, a big hello from over in Scotland here. 

 

I've been reading this site since I've had my 996 but only joined this morning as there seems to be a wealth of knowledge, I realise this question has probably been asked over and over but I'm hoping for a definitive answer regarding my own car. 

 

It's a 1999 Carrera C4, the bottom end is done and requires and expensive rebuild, my thoughts are, if I'm spending quite a bit of money it would be nice to get some more power. 

 

As it stands I would like to go either 3.6 or ideally 3.8, how possible is this on my my 99 C4, the DME is the 7.2 variant and the car already has egas with it being the C4, any info or guides I would very grateful for. 

 

Thanks Craig

Link to comment
Share on other sites

Craig,

Suggest you tell us your budget,skill and equipment level and reason for wanting the larger displacement.

This has been done but the difficulty  depends on how you do it. If you go for any DME 7.8 engine ,you need some very sophisticated engine management manipulation skills. It is way more than just Vario-cam Plus issues. And would such modifications pass your Smog Tests?

So better to stay with  the DME 7.2 you have and consider enlarging the existing engine as part of your rebuild. Hartech and AutoFarm could advise you.

A rebuild with simple upgrades ( if diy) is well over $7,000. If you increase displacement or need professional services it would double.

Your roller C4 may be a better candidate for a 'good used' engine than a massive expense? Yemv

Edited by Schnell Gelb
Link to comment
Share on other sites

Budget I'm thinking around 10k max, regarding skill level etc, pulling the engine out and refitting is no issue at all, my fabrication skills are next to nothing, I can't weld etc, I can work a multi meter but I don't think I'd manage to much loom adaptation.

 

Regarding smog test over here, that wouldn't be too much of an issue to be honest.

 

I have contacted Hartech but I got thinking about what else I could do if I'm gonna spend alot of cash anyway, a rebuild on my motor if the crank is shot is approx 9k, now that's alot of money to end up with a standard output engine all be it the engine should be bullet proof you would think. 

 

And lastly, your right regarding a used engine, I've priced this up and it is the cheapest option but my worry is that 6 month down the line the replacement engine go's bad then I'm back to square 1

Link to comment
Share on other sites

58 minutes ago, Locosaki said:

 

 "regarding a used engine, I've priced this up and it is the cheapest option but my worry is that 6 month down the line the replacement engine go's bad then I'm back to square 1"

But by then you will have rebuilt the original motor and can fit that - again & again & ..... !

That may sound factitious but it is probably closer to the reality of owning one of these cars than many will concede.  M96 ownership is a gamble and if you have $10K+ cash  and like playing the odds it is an exciting,high stakes game. Technically it is fascinating and if you have no other life it can be absorbing, even obsessional !

I suspect many of the cheaper 996 that are for sale  are what we call "flippers" - because the current owner looses their nerve for the gamble when they realize the  cars value vs repair cost is so unattractive. As soon as they get it running again, they sell quickly to avoid another big expense.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.