D.I.Y. 996TT Redneck Engine Build Thread.
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I stopped by the shop the other day and I am currently in line behind some other cars they are working on. One of their mechanics is on vacation so they are swamped at the moment. They have the full set of nice Stomski tools. We were talking that we might advance the timing one half degree. Supposed to have better low end power that way at the cost of a little top end. Hopefully it will be ready next week.
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Originally Posted by brnrdtns
Going back to a few years ago I managed to blow up my car. We think it was a hydrolock situation and it destroyed my motor. I think it was a combination of bad gas and boost creep in cold weather that detonated and lifted my heads resulting in a hydrolock. You can see that thread here: https://www.6speedonline.com/forums/...otor-pics.html Anyways, I got into riding motorcycles a bit and left my car on jackstands in the garage for a few years while I debated what to do about it. I didn't want to wait this long but I got busy with a few career projects and such. I was planning on getting a pull out motor but after taking my engine apart in my garage I decided that I wanted a built motor and that I could find parts online and build it myself (against much of the advice given here! Sorry BLKMGK 
). I have quite a bit of experience building motors. I have built a few hot ATV motors, a CBR600F4 motor, and a nice Oldsmobile 455 motor with a friend. I began collecting parts last summer. I got a set of cases from Specialized German dismantler. Prodigymb hooked me up with a set of 997 pistons, liners, stock oil pump, and 997 lifters from his build which were removed with 20k miles on them. CRR hooked me up with a crank and some Pauter rods from his old 996GT2 with less than 10k on them. I got a BBI underdrive pulley from BlackHorseTurbo. Sean at Silly Rabbit drilled and tapped my cases for 12mm ARP studs. I was also able to squeeze some helpful advice out of Sean after loitering around his shop for around 5 hours (I won't reveal his engine building secrets though ). I plan to use Sean's Cometic head gasket. I am using the old IMS and heads/cams/housings from my old engine with about 58k on them. I am lightly porting the heads myself and am getting the valves all cleaned up and sealed well. I have new timing chains also. I plan to just go back to my old setup with K24 billet turbos running 1.2 bar and run a bigger setup in the future. I was fine with what I had earlier and I am running out of $$! Yes I am doing this inside my house as it is the cleanest place I have. I am waiting on some new rod bolts but I will post up and update my progress. I spent a lot of time measuring and having things magnafluxed to make sure my parts are good. Feel free to comment with any advice or criticism. I assembled the crankcase already with plastigage to double check clearances and it all looks good, so here we go:
). I have quite a bit of experience building motors. I have built a few hot ATV motors, a CBR600F4 motor, and a nice Oldsmobile 455 motor with a friend. I began collecting parts last summer. I got a set of cases from Specialized German dismantler. Prodigymb hooked me up with a set of 997 pistons, liners, stock oil pump, and 997 lifters from his build which were removed with 20k miles on them. CRR hooked me up with a crank and some Pauter rods from his old 996GT2 with less than 10k on them. I got a BBI underdrive pulley from BlackHorseTurbo. Sean at Silly Rabbit drilled and tapped my cases for 12mm ARP studs. I was also able to squeeze some helpful advice out of Sean after loitering around his shop for around 5 hours (I won't reveal his engine building secrets though ). I plan to use Sean's Cometic head gasket. I am using the old IMS and heads/cams/housings from my old engine with about 58k on them. I am lightly porting the heads myself and am getting the valves all cleaned up and sealed well. I have new timing chains also. I plan to just go back to my old setup with K24 billet turbos running 1.2 bar and run a bigger setup in the future. I was fine with what I had earlier and I am running out of $$! Yes I am doing this inside my house as it is the cleanest place I have. I am waiting on some new rod bolts but I will post up and update my progress. I spent a lot of time measuring and having things magnafluxed to make sure my parts are good. Feel free to comment with any advice or criticism. I assembled the crankcase already with plastigage to double check clearances and it all looks good, so here we go:I will be interested to hear the final parts cost and how many hours you will have into this.
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Originally Posted by brnrdtns
Going back to a few years ago I managed to blow up my car. We think it was a hydrolock situation and it destroyed my motor. I think it was a combination of bad gas and boost creep in cold weather that detonated and lifted my heads resulting in a hydrolock. You can see that thread here: https://www.6speedonline.com/forums/...otor-pics.html Anyways, I got into riding motorcycles a bit and left my car on jackstands in the garage for a few years while I debated what to do about it. I didn't want to wait this long but I got busy with a few career projects and such. I was planning on getting a pull out motor but after taking my engine apart in my garage I decided that I wanted a built motor and that I could find parts online and build it myself (against much of the advice given here! Sorry BLKMGK ). I have quite a bit of experience building motors. I have built a few hot ATV motors, a CBR600F4 motor, and a nice Oldsmobile 455 motor with a friend. I began collecting parts last summer. I got a set of cases from Specialized German dismantler. Prodigymb hooked me up with a set of 997 pistons, liners, stock oil pump, and 997 lifters from his build which were removed with 20k miles on them. CRR hooked me up with a crank and some Pauter rods from his old 996GT2 with less than 10k on them. I got a BBI underdrive pulley from BlackHorseTurbo. Sean at Silly Rabbit drilled and tapped my cases for 12mm ARP studs. I was also able to squeeze some helpful advice out of Sean after loitering around his shop for around 5 hours (I won't reveal his engine building secrets though ). I plan to use Sean's Cometic head gasket. I am using the old IMS and heads/cams/housings from my old engine with about 58k on them. I am lightly porting the heads myself and am getting the valves all cleaned up and sealed well. I have new timing chains also. I plan to just go back to my old setup with K24 billet turbos running 1.2 bar and run a bigger setup in the future. I was fine with what I had earlier and I am running out of $$! Yes I am doing this inside my house as it is the cleanest place I have. I am waiting on some new rod bolts but I will post up and update my progress. I spent a lot of time measuring and having things magnafluxed to make sure my parts are good. Feel free to comment with any advice or criticism. I assembled the crankcase already with plastigage to double check clearances and it all looks good, so here we go:
). I have quite a bit of experience building motors. I have built a few hot ATV motors, a CBR600F4 motor, and a nice Oldsmobile 455 motor with a friend. I began collecting parts last summer. I got a set of cases from Specialized German dismantler. Prodigymb hooked me up with a set of 997 pistons, liners, stock oil pump, and 997 lifters from his build which were removed with 20k miles on them. CRR hooked me up with a crank and some Pauter rods from his old 996GT2 with less than 10k on them. I got a BBI underdrive pulley from BlackHorseTurbo. Sean at Silly Rabbit drilled and tapped my cases for 12mm ARP studs. I was also able to squeeze some helpful advice out of Sean after loitering around his shop for around 5 hours (I won't reveal his engine building secrets though ). I plan to use Sean's Cometic head gasket. I am using the old IMS and heads/cams/housings from my old engine with about 58k on them. I am lightly porting the heads myself and am getting the valves all cleaned up and sealed well. I have new timing chains also. I plan to just go back to my old setup with K24 billet turbos running 1.2 bar and run a bigger setup in the future. I was fine with what I had earlier and I am running out of $$! Yes I am doing this inside my house as it is the cleanest place I have. I am waiting on some new rod bolts but I will post up and update my progress. I spent a lot of time measuring and having things magnafluxed to make sure my parts are good. Feel free to comment with any advice or criticism. I assembled the crankcase already with plastigage to double check clearances and it all looks good, so here we go:
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Hats off to the OP for tackling this project. I wouldn't have to ***** or know how to undertake this, and it I did it would take me a year. My builder had my engine dropped and fully broken down in one day. With all parts on hand it took him a couple of days to get it fully reassembled. Of course he's build over 100 of these motors over the years so it was like riding a bike to him. If I did it I would likely end up with a bunch of nuts and bolts left over wondering what I missed. Lol
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I've had a bit of good luck. I found a shop in my town that has a factory trained Porsche and Ferrari tech. Looks like they get most of their business rebuilding older Porsche motors. I stopped by and asked if they had the tools, "we have everything." I'm going to get it ready and drop it off tomorrow.
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I stopped by the shop the other day and I am currently in line behind some other cars they are working on. One of their mechanics is on vacation so they are swamped at the moment. They have the full set of nice Stomski tools. We were talking that we might advance the timing one half degree. Supposed to have better low end power that way at the cost of a little top end. Hopefully it will be ready next week.
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he doesnt understand the difference between ignition timing and cam timing. if your shop has the stomski tools and the knowledge to use them your in great hands. the single best way to exacting cam timing bar none.
keith heres a little tutorial for you
this is an early engine but the basics still apply regarding the tools
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Joined: Apr 2012
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pay no attention to the peanut gallery bernard. he doesnt understand the difference between ignition timing and cam timing.
if your shop has the stomski tools and the knowledge to use them your in great hands. the single best way to exacting cam timing bar none.
keith heres a little tutorial for you
this is an early engine but the basics still apply regarding the tools
https://www.youtube.com/watch?v=0t7gpEBJEf4
he doesnt understand the difference between ignition timing and cam timing. if your shop has the stomski tools and the knowledge to use them your in great hands. the single best way to exacting cam timing bar none.
keith heres a little tutorial for you
this is an early engine but the basics still apply regarding the tools
https://www.youtube.com/watch?v=0t7gpEBJEf4
There is a video of Stomski timing a GT3:
You can play with the cam timing a little bit and a half degree or so is probably still within the margin of error. If you crack the valves open a little early it gives you a little more power at low RPM. Going the other way if you retard the cam timing a bit at high RPM it has the intake velocity to pack a little more air in there at the bottom of the stroke, so you can adjust based on your goals for the car.
