loool thats the article that got me thinking i need to build one for the porsche

 

Very interested to hear what you end up doing to get the dash cluster to work. Does the Porsche PCM know the engine is running (as in did you use Porsche starter wiring or bypass it)?
I must have missed it: What do you have the Porsche crank sensor and cam sensors hooked up to?
Edit, I see your flywheel and trigger setup. Curious about the other factors. I've got my eye on an 06 Cayman S.

 

climber , the sensors are connected to the porsche computer which relays the message to the cluster
and i still use the porsche wiring for the starter ( the starter is the porsche unit )

other than that not much going on , i finished the catch can :



and how it looks in the car:



and finally some shots of the new shortblock





right now i'm waiting for a bunch of parts to show up to complete the longblock , then i should start mocking up and building the turbos .

mean while i need to just sit down and get the wiring done ; the rpm and temp guages are really pissing me off.

i'm also planning on removing the deck lid and bumper , and taking them over to get painted along with the rocker panels . that way i don't have to take the car over to a paint shop and have it sit there for god knows how long.

 

Dirty,
Are you going to make sure you solved the problem of your rngine puking oil before tossing in the new motor/turbo setup? Resisting from doing donuts would prolly help ALOT

 

looool , donuts are part of the testing process

by the time i have the new engine ready i'm sure i would have already fixed most issues . i'm thinking it would take me some where around 4 to 6 months to have the new engine ready to bolt in .

 

I love you for this build I am going into the Marines soona and I will need something to blow all my money into and this seems perfect. I have been looking at the renegade website but they don't really have any wiring tips on there. If you could post some up that would be amazing.

 

there's not that much to the wiring if you ask me , you will need a wiring diagram , then find the wires you want and cut out the rest

 

update time

the camshaft showed up recently along with the lifters, lifter retainers , oil pump, head studs and timing chain and related hardware ,,, so those found their way on to the shortblock




so after spending time on things i should be doing later in the build process , i decided to focus on the wiring again . so i re printed the diagrams and hilighted the wires from the rpm sensor and coolant temp sensor all the way to the cluster. i then proceeded to compare the diagram to the old harness, which turned out to be the same , then i compared the existing harness with the diagram ( checked colors , pin outs , and continuity ) and it all checked out ok . i also checked the CAN BUS wired from the dme to the cluster .

so this means that either :

1- both sensors are shot.
2- there is some thing i'm missing in the wiring , something having to do with the transmission computer i guess .

it just has me really bummed out right now , i really was hoping to have the wiring issue done by now .

i guess worst case scenario is getting a brand new interior harness from an auto car and drop it in there and hopefully that would fix it .

but before that i have one more thing to try with the current wiring harness; there are two sets of can-bus wires going out of the DME , one to the cluster and the other set to the auto tranny computer . the thing that i just thought about is that the second set of wires ties in to the other two , which means maybe the rpm and temp signals are carried on that set of wires then it gets tied in to the other set.

off course i could just be speaking jibberish , but i always say try the easiest and cheapest fixes first .

i'm also waiting on the valve springs to show up , so as soon as they do its time to install them on the patriot heads i got and install those on to the shortblock as well as the front and rear covers and call the engine done for now.

 

Dirty, ill look at the wiring diagrams when i get home tonight. Its very unlikely the transmission control unit has anything to do with it. What year is the car, and what year is the harness you installed? The newer the harness the more items were done with CAN. The reason for 2 can wires is redundancy, if the high fails the low backs it up, it is unlikely both have failed but Porsche builds these harnesses by VIN, so that will likely be your issue. If you have the vin of the origonal car from donor harness, that would help also

 

hey marky , thanks for replying the car is a 2001 and the harness is off a 2001 also .

the can wires actually have two sets ; one hi/low can signal going from the DME ( pin B$/B3) to the tiptronic control unit (sheet 11 pin C1L/C2H)
and another hi and low signal wires going from the DME ( pin D36/D37) to the PSM controller it seems ( sheet 10A - pin A40/A24), and to the cluster as well (sheet 2 - pin A12/A31) .

i guess i should have been more clear in my previous post , the tiptronic contoller can bus signal is not what i'm concerned about , it actually the other can bus signal wires ; the one that goes out from the DME then splits and goes to the PSM and cluster . there just might be something wrong with where the split is?

ps. here is the the wiring diagram i'm using :
http://www.vividracing.com/catalog/i...ingdiagram.pdf

 

Is there no way to read the data on the bus and see if it's even there?

 

i wish , it would make life a whole lot easier .

the annoying thing is that it worked just fine with the old messed up harness, and i had to go and swap out the old harness with a new one because i thought something was bound to stop working with the way the old one was damaged ,,, guess i should have listened to the old saying " if it ain't broke ,, don't fix it"

 

Actually if you could see the actual values in the DME you would know if it is getting the signal from the sensors, then they are passed along to the cluster via the CAN. im looking at diagrams now. Any chance they gave you the VIN of the donor car for the harness?

Also, have you found any wires that dont match up to your harness?

Mark

 

i really can't tell you if had the vin number or not , if they did provided it i don't recall what i did with it

as for wires not matching , there were a few , but non essential as far as i remeber .
i'll re look at them when i get back into town.

 

not much to report , been busy with work and other stuff

i broke down and ordered a new ( used ) interior harness that is off the same car as mine from LAdismantler, so it should be just like the melted one - for an auto car.

aaaaand thats about it
i have the harness sitting in a box right next to the car and just been to lazy to install it
i should have it in some time this week and hopefully get the whole guages dilemma behind me !

i'm also just about to take the deck lid and side skirts and rear bumper to get painted , just need to get my *** to the paint shop

on a side note, the new engine is a little closer to completion : i have the heads on the short block and all buttoned up so now its officially a long block !

i'm planning on installing the LS3 exhaust manifold on the heads just to see how the turbo routing is going to be ( have you noticed how far ahead of myself i'm going - i should focus on finishing the car's interior first! )

so , on to the never ending list :

- take parts to paint.
- install new harness and test
- if all is well re-install interior , if not set car on fire
- install manifolds on new engine
- install inner fender

 

Just wanted to say thanks for doing such a great job in documenting this swap! A buddy of mine used to have an 04 911 Turbo Cab that we drove all over the place and had a blast in it! Those cars are a ton of fun and would be so much more with an LSx!!

I'm in Saudi every now and again on business and I'll definitely be keeping my eyes peeled for this car on my next trip!!!

 

thanks 85mcss , hit me up next time you are in saudi

i try to document everything for 2 reasons , the first being i learned so much from this community through build threads like this and i would like to give back a little bit of what i learned. and the second reason is that i have the memory span of a goldfish: i need somewhere to keep track of what i did and how i did it and what not

 

Awesome build, I try not to check back in the hopes that if I wait long enough this thing will eventually be finished. Strong work.

 

amazing build i have been watching from the begining

 

update time!

took the stuff to get painted , got it back and it looks good





while i was contemplating installing those parts , i decided to install the new harness. i was in no rush to finish stuff, so i did it in stages ; i took the oul one out , layed the new one in place , wired the engine compartment connectors , spliced into the interior harness , and finally put the throttle cable back in .

the result ,,,,, IT WORKS!

rpm worked right away and it took a while to get the temp needle to move , but it did

so this got made me motivated to work some more on the car ( who would have thought it ! ) , so i slapped the decklid and wing and bumper on the car and they look gooood ( sorry no pics )

i still have to install the rocker panels , but those can wait for now.

so next up is :
- putting the interior back in
- retune cold idle ( car just surges from 700 to 2000 rpm regularly )
- pull the car out and get the 10 feet off dust blown off the car.
- install the intake tube
- install the front inner fender

wish me luck !