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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 3.6l swap to 997 3.8l
Reported or suspected cause
computers these days look
Suggestion or failed attempt
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0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that suspect a cause
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Suspected cause
Problem is the computers these days look for input from every little thing and if the pins on the 996 plugs don't line up with the pins on the 997 plugs I can imagine the project would start taking a lot of time ( and hence $) to figure out.
Leading evidence: 'computers these days look' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'computers these days look' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace standard 3.6' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
That x51 3.6 that you mentioned is going in my boxster to replace the standard 3.6.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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computers these days look
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
Problem is the computers these days look for input from every little thing and if the pins on the 996 plugs don't line up with the pins on the 997 plugs I can imagine the project would start taking a lot of time ( and hence $) to figure out.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
25 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T042512Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hey everyone, been lurking in the shadows for a while, but now have a question. Has anyone done a 3.6 to 3.8 swap, if so what is involved?
do you also have to use a 997 tranny? Im thinking about doing this swap to my 2002 c4s. Oh ya heres a pic
DSC00518.jpg
Thanks in advance for any input!
Several months ago I experienced the infamous left hand corner massife amounts of smoke ejection out the tail pipe! After careful inspection everything seemed allright. About a month later I noticed the oil pressure gauge dropping. Oil pressure stays between 1 and 3 but does not raise with higher rpm's any more. Did an oil change and found slight particles in old oil, nothing too alarming. HOWEVER after running with new oil and hoping oil pressure would resurface it did not. Apon further investigation of new oil there was a fair amount of new shavings making me believe I have a spun bearing or worse!
Because rebuild sbeing cost prohibitive iv'e decided to go a different route. I had found a new x50 3.6l motor for a good price but unfotunately missed the oppertunity. Now Iv'e found a 3.8l motor thats a new reman from porsche tha was blueprinted with reworked heads with output of a 3.8l x51 or slightly more.
Why would it kill resale? Some have said it was very feasable, others have told me that the 997 tranny is completely differrent and a 996 tranny wont bolt to a 3.8l?
Geez - I hope this doesn't happen to my 2002!
Good reason to inquire, but the project would no doubt be +$ to sort through. The people to really ask the question of are the ones who will be doing the work. You can figure on a new computer for sure, and it sounds like maybe a trans as well. Problem is the computers these days look for input from every little thing and if the pins on the 996 plugs don't line up with the pins on the 997 plugs I can imagine the project would start taking a lot of time ( and hence $) to figure out.
As an example, a customer once paid my mechanic to install a VW turbodiesel engine into his VW synchro van. The customer even supplied the wiring kit. Well, the wiring kit was wrong, the computer (and I think some hardware) was damaged, and by the time the job was finally sorted a year later, the customer could have bought pretty much any suv/camper van he wanted and come out ahead $-wise..
Not to dampen your enthusiasm, I bet it would be as economical to buy a new crate engine from Porsche, install it in the 2002, sell the 20002, and buy a 997 as it would be to engineer this swap. This supposition includes the consideration that the 996 becomes virtually un-saleable after the swap. Think about it, who would pay good money for a *bastard* 996 when a 997 can be had for just a few $ more?
EdiC4S:
There is a different solution.
Did you hear something about
Silsleeve from Autofarm
?
They are fantastic in Porsche watercooled motors.
Here you have more info.
http://www.autofarm.co.uk/engines/water_cooled
They can up your capacity to 3,8 or 4.0 l
The engineer Nick Fulljames would rebuild a boxer engine to make it unbreable and more powerful, with the same essence of OEM Porsche motors
A 3.4 to 3.6 or 3.8 is fairly well figured out swap at this point and not much of a science project. They are mostly plug n play and the shops that know how to do it have the items that do need to be tweeked well sorted out; egas, variocam plus, fuel sender, etc.
The 3.8 is a brand new motor from porsche with minor upgrades, it may have warranty. As far as swap goes I'm trying to get in contact with someone who has done this and can therefore enlighten me as to what is involved.
There are no shop's anywhere close to me with any kind of real expirience with 996's. There for it's turning into a winter project in my shop.
It wont be that hard at all.....a late model 3.6L car is VERY similar to a 997...Call FVD in Florida, they have dropped 3.8Ls in 996s so they know what you need.
It will be a very simple conversion. Putting the 3.6 into my '99 boxster was quite a bit more involved. With your car it will be plug and play, essentially just need a new program in the DME. That x51 3.6 that you mentioned is going in my boxster to replace the standard 3.6. I passed on that modified 3.8 as they wanted the same price as a factory X51 with warranty when I spoke with them. The price has come down quite a bit on it now that makes it worth the money, even without a warranty.
Todd
Todd
It sure can be a small world at times! I missed the x51 by less than a week, you're lucky you put a deposit on it. You're boxster is gone fly!Good luck with the install.
Edi
That x51 was going for 10K. Not sure what it ended up going for. By the time I called it was gone. Congrats to Todd.
I am still looking for a 3.6 or 3.8 for my car...possibly.
-P
The best price I found on a brand new 3.6 X51 was $8550 + $2600 core charge if you don't have an X51 to send Porsche back. An X51 3.8 is actually less at $8400 but the core is $5500 if you don't have one to send back.
Todd
First, you will find this to be a lot of money for just 35 hp. Selling your C4S and going to even an X51 996 C2 would have better performance. Alternatively, you will find an EVOMS supercharger to be a far cheaper and much greater perfromance upgrade than the 3.8l upgrade.
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