cfjan

Alex,

Do you expect the 3.9 treatment to go pretty much the same as the 997 GT3? (since you mentioned the engine are very similar) Or there will be things that need to be done differently??

Different cam?

sharkster

Hehe thanks... Well it's gotten a good response. I think in Europe the price for something like this is in the 40K Euro range so if things go well we may yet start to get engines from over seas. The 6 has a few possibilities and also some unfortunate requirements that add to the expense but the good news is we're going to learn on our car first. Play around with all the different things and once the coughers run dry we'll see what actually makes economical sense too

Thanks Michael... we also sort of opened a can of worms and possibilities when we split the case It's going to take a while longer but it will be worth it

Hehe thanks Ron... it's a long season so put some miles on!

Parking brake works a-ok

SH || NC

You guys could sell tickets to help with this kind of work; this would be like fantasy camp; really cool stuff IMO. Thanks for posting.

sharkster

Well things are similar but yet different... This is why it's good we use our car for development I'll have more soon

GTgears

We're just uprgading it with our rebuild kit. Because the 996 already has 40/60 ramps and good spider gears in it, there's no reason to go any further, even for the power levels they are making. But having an LSD in there that actually locks is going to let this car put all that extra power to the ground. They've just got to make sure their tires are sticky enough.

Ale-Superbike

Hello I am following this post, congratulations. I have a 996 Carrera 2 2003, and I want to mount the throttle body that I bought the GT3. Now I need to mount a new plenum. The original of the 996 GT3 plenum I see in this post, which has diameter in the two late? The outer diameter of the plenum to the sides where the sleeves and rubber 'of 97 mm? While in front of where the throttle body and the inner diameter 'of 83 mm, with a distance of 4 holes of 75 mm? Thank you.

Backmarker

Will you have dyno results any time soon?

sharkster

Hehe I know man... I already got a nice plate for this car "NO PSM" but with those skinny 295s... Oh oh

Hey there.. hope you got my PM. The best person to talk to is IPD who makes the plenum

Next step is assembly, break-in and then we'll get together with EVOMS to do the live tuning. So absolutely

micahbones

Absolutely love this thread. Great to see in detail the (re)build process, including differences/similarities between the 996 & 997 GT3 engines. Keep up the good work SharkWerks!

plima

After looking at this <https://rennlist.com/forums/997-gt2-gt3-forum/569382-nip-tuck.html> thread on the Akrapovic 997 GT3 exhaust, I wonder if the headers+mufflers would fit on my 996 GT3, needing only a short pipe from the muffler to the bumper cutouts. Light weight and good sound? Alex, are you interested in trying this combo on your 996 GT3 and helping us all out? Thanks for the great thread.

4porsh

inverterman

sharkster

The headers/cats would work but the mufflers wouldn't fit on existing mounts etc. it might be possible to fit and then only do a short pipe etc... but I'd be more inclined to use that set up in a similar fashion to what we're doing and go center out if you will? My pleasure on the thread and it's just been a fun journey. I've got a bunch more stuff to show you guys with the assembly starting shortly

Thanks and we'll see just where and how she ends up soon! I'm looking forward to getting her on the road in a couple of weeks. There's a few more differences that we'll point out but it's been give and take so to speak vs the 997. We've had to work a bit harder on the 996 but it's all in fun

Cool avatar!

sharkster

Back over to assembly now...

In goes the crank, GT3R oil pump, all new bearings and of course the Ti rods....


The EVOMS head stud kit installed:


There was an short break as we moved over to the new shop and James' new engine room. In go the Sharkwerks big bore pistons/liners:



Coming together... and the block starts to grow:




Now we get to the all-important cam shafts:



Timing the cams (these require different timing blocks from from the 997GT3):



More to follow shortly but we're getting closer...

Backmarker

Exciting progress

If it dynos wel this mod is a much better choice for track guys IMHO