BoxsterLS376 introduction - LS3 conversion :)

[BoxsterLS376]

Originally Posted by JRL

Hey John why can't you use the Boxster accelerator pedal assembly - it is drive by wire isn't it? Seem like the wires would be the same or at least similar enough. What am I missing?

Hey Randy,

Yes the porsche pedal is drive by wire, well the pedal itself is actually mechanical but it connects to an electric motor mounted in the dash. It is also a 6 wire setup like the GM unit, but i believe that the problem is in the voltages that GM uses vs. what Porsche uses, they no sprecken well~ Probably need a series of resistors or something - i'm sure you could make it work but when it comes to the throttle i'd like to keep it as simple as possible to avoid any potential issues.
J

[BoxsterLS376]

Greetings everyone,

Got a bit more done and will hopefully get back over to the shop today~ Intake is almost fabricated, I think I am going to forget about the factory box due to potential restrictions and just go with a cone filter and create a cold air box.

One thing which I didn't really think about was the fact that the GM MAF sensor bung is aluminum, not steel so you will need to have some aluminum tiggin' skillz and straight aluminum pipe plumb it into. Unfortunately I already got the 4" steel pipe so I decided to make it work, plus my aluminum tigging skills are shall we say not that great so... JB WELD TO THE RESCUE!!!!

I sometimes forget how awesome JB Weld is - scuff it up a bit, lay it on, then a nice final finishing finger weld and BAM!! Like it cam out of the factory that way!


So otherwise I also got started on the cooling system a bit... In case you don't remember the original motor cracked a cylinder head or something and the oil/coolant started to mix badly in the end. At minimum the entire cooling system needs to come apart for cleaning which is what I am starting on.

I decided in stead of spending money to have the 3 radiators, coolant reservoir and the heater core properly cleaned I would rather put it towards new parts as the stuff on the car is already 15 years old so I think it is the right way to go.

I have talked to quite a few people who have had trouble cooling these motors in other applications and really don't want to run into that issue so I am upgrading the radiators to CSF full aluminum, and getting a new heater core and coolant reservoir.

After pulling out the heater core yesterday I think I made the right call - the stuff coming out of it is nasty sticky goo, I'm sure the radiators are about the same.

Here are a few pics of the intake setup thus far~
Thanks for following~
J

[coreseller]

JJ, Your build reminds me of a day when I had much more ambition and energy, except you've MUCH MORE TALENT lol............Great thread..................