M275

Very Nice.

With a 13:1 CR would you gain more HP with 100oct vs. the 91 garbage in California? How much?

sharkster

Thanks and actually yes we did get more power with better gas. There are a few different ignition maps the DME can choose from

sharkster

Underway now fellas working on builds 2 and 3 with a silver GT3 and white one as well...

James removing the engine on the silver one:

sharkster

Here's a few pix/updates guys on the two 997 GT3's we're building... one is a white 2008 and the other a silver 2007.

Out she comes:



Guys we should all take a lesson here... This clutch has seen 37,000 "hard" (and I mean that) miles yet look at the condition


Rear main seal? Not so good... hence we're replacing all of the cars we do these motors on (or indeed LWF's) with the 996GT3 one instead.


Over to the white one... out she comes too:


A pair of very expensive motors...


The higher mileage motor did have a lot of "dirt" and other fun stuff to clean off (along with the harnesses and other parts):



Out come the cams...


Not bad for 37K? Actually pretty darn clean/amazing...


Those Ti rods are soooo light:



Fast fwd many steps And in go the EVOMS head studs...


Ze liners...


The white one is also getting the TechArt noselift kit installed (just like on kermit):


for the rear...


Ze front...

sharkster

One of the engine's (with the higher miles- who could that be? is getting more of a work-over... In the connecting rod department we do feel it necessary to get new rod bearings and bolts.

Here's you can see a comparison between the pankl GT3 rod and a Twin Turbo one (yes I know it's a little bent lol!):


The Titanium GT3 ones are obviously lighter but by how much you ask?


Certainly helps the GT3 rev quicker

Snowboarder54

Glad to see mines not the bent one!! I wonder who's TT that ones out of??

cfjan

So Snowborder's engine is getting new Pankl Ti con-rods but the standard 3.9L build uses the stock Ti Porsche unit, is that correct?

sharkster

hey cfjan... actually no all the GT3's come stock with these. I wouldn't want to go any lighter on those and possibly weaken them But he's getting new rod bearings and con-rod bolts (see below in a minute).

cfjan

Got it, thanks for clarifying. I know GT3s all come w/ Ti con-rods, but just wasn't sure about the comment above.

I am still waiting to see a 6GT3 w/ the 3.9L..

sharkster

So after 37.5K on this motor you can see that there is indeed some decent wear on the rod bearings, which we're replacing.



All well and good but never mind the work to do that but because we're dealing with one-time use stretch bolts you need 12X new ones:



Take a long hard look at this $58 dollar bolt:P At least the bearings are only $19 a piece....

cfjan

$600+ just on the bolts?!

I think I need to work harder to make more $$$...

sharkster

I know plus 12x18 on the bearings and PDX from Germany and I'm going to make bolts myself

Snowboarder54

Ya, me too!!! But it is going to be worth every penny!!! So the kids get a little less $$$ when my time comes. I'm sure they are happy for me!!!

cfjan

LOL, yeah.. but you got to do it right, so.. since the motor is opened already, might as well... !!

Should be good for many many miles to come!!

Congrats on the conversion! I would love to one day to do it on my 6GT3.. !!

russo

This upgrade is definite on my list when either the warranty expires, have a problem with the engine, or when the engine is approaching 50k miles.