TRSCobra Posted September 22, 2014 Author Share Posted September 22, 2014 So I've encountered some more issues. The trans started whining in every gear but 4th (straight through), so I looked on corvette forum and found one local out of a 2007 z06 with 19k miles. I'd love a built tr6060 or even t56, but that's just not in the cards right now as I've gone nearly $8k over my annual mod budget. Any way, here's a few pics of the progress. Rear subframe/suspension out:http://i12.photobucket.com/albums/a204/TRSCobra/20140921_110301_zpsxvvpc3mj.jpg With the differential out: http://i12.photobucket.com/albums/a204/TRSCobra/20140921_135335_zpsgpt2saug.jpg And the trans out: http://i12.photobucket.com/albums/a204/TRSCobra/20140921_153449_zpskupg8my3.jpg Old one is on the left: http://i12.photobucket.com/albums/a204/TRSCobra/20140921_153414_zpsainsobjb.jpg Wasn't a bad job, but bench pressing the diff and trans alone on a creeper was a harsh reminder that I need to get back into the gym! I took a break at that point and I'll work on it in my free time over the next week. I just hope this new trans is trouble free... Link to comment Share on other sites More sharing options...
rodan Posted September 22, 2014 Share Posted September 22, 2014 You should think about doing the torque tube bearings while you're in there... Link to comment Share on other sites More sharing options...
hadvw Posted September 22, 2014 Share Posted September 22, 2014 Note to self: owning a fun toy car is rarely as easy as it sounds.. Link to comment Share on other sites More sharing options...
TRSCobra Posted September 22, 2014 Author Share Posted September 22, 2014 You should think about doing the torque tube bearings while you're in there... Considered it, but with 29k miles, they should be fine. I'll be pulling this trans out again in when I put in the built one anyways. Note to self: owning a fun toy car is rarely as easy as it sounds.. Very true. Especially when you break things like I do. So far every performance car I've owned has had a failure of some sort. My '86 camaro I blew the engine at 80k miles (305 junk), my '90 SHO snapped the clutch PP straps, which wore a hole into the transmission case, I cracked 2 piston ring lands on my LGT, and I killed the clutch and trans in this one. Every time was an excuse to build it up more though. Put a 350 in the z28, an aluminum fw/9 puck clutch and quaife'd trans in the SHO, a forged piston EFI logics shortblock in the LGT, and now this.. This trans is stock though. Maybe I need to learn how to drive. Link to comment Share on other sites More sharing options...
rodan Posted September 22, 2014 Share Posted September 22, 2014 The 1st and 2nd gear synchros were wonky in my C6, and I was terrified I was going to have to deal with the tranny before I got rid of it. Fortunately I didn't have to. The T56 and TR6060 transmissions are just unbelievably expensive. Even getting them rebuilt is $$$. I fondly remember the days of $400 T-5s, and I could swap them in/out of a 5.0 in around an hour. Of course the reason I was good at swapping them was the glass 3rd gear... Link to comment Share on other sites More sharing options...
05GT Guru Posted September 22, 2014 Share Posted September 22, 2014 Just have to get the trans manual and do it yourself. It is a bit of a pain in the ass. I did a t-3650 rebuild from a 02 mustang GT. Fun, fast cars tend to make your wallet lighter. A big reason I have been sticking with bikes lately. Even if they do have a failure parts are usually cheap and they are so easy to work on. Link to comment Share on other sites More sharing options...
hadvw Posted September 22, 2014 Share Posted September 22, 2014 Re: bikes: if I didn't have the co-ordination of a drunk hippo out of water.. Plus, no way my wife would let me get one. And the near misses (and not) that I've seen here in the Bay Area where they're allowed to cut between cars while both are moving: I just couldn't bring myself to get a bike unless I was single. Not judging, that's just my decision. I've had the following cars: '84 Jetta GLI, '90 GTi 16v, '94 Corrado VR6 (notice a trend, and the username :-). Lots of nagging electrical issues due to VW using cheap ass wires and not holding up in SW Ontario winters/salt/summers/humidity/etc. Went through 2 transmissions on the GTI before I sold it (best seats ever - Recaros rock!). On the Corrado, did Quaife, modified 3.94 final drive, 5th gear and that took a bit to get right. The Z-Engineering supercharger was a ton of fun, but not that reliable (pulley belt kept wearing out bearings). When working a super fun car (took it winter rallying, got air at 115 mph, etc). When not - well, driving my dad's Camry was not so fun :-) Now that I'm married and "responsible", I opted for the LGT. In almost 10 years, it's only left me stranded once when I hit a pothole that took out TWO tires at the same time. And the nightmares about my car breaking down, brakes overheating (not that I ever had this happen), etc have slowed to a very small trickle. I used to get those much more often when I had the VWs :lol: As a reward, I'm going to put in one more round of upgrades into the LGT (already have stage 2.5 bnr16g, etc): wilwood bbk, Grimmspeed TMIC, new DP, maybe some HIDs, etc.. I figure in 5 years, she'll be done.. At that point - who knows. I might have to settle for a Tesla (already have solar panels). In my heart, I want a Focus RS or 4-door Mustang GT or the like (I am SO done with 2-door cars!). Maybe an STI if they ever up the power.. (sorry for the threadjack!) Link to comment Share on other sites More sharing options...
TRSCobra Posted September 24, 2014 Author Share Posted September 24, 2014 Why not "havevw"? None of their current line up meets your criteria? I find myself more and more drawn to a new golf GTI or TDI when my current commuter mazda 3 gets ready to expire. I keep my hopes up for a GTD, but they delayed the american release for some reason. Link to comment Share on other sites More sharing options...
hadvw Posted September 24, 2014 Share Posted September 24, 2014 Why not "havevw"? None of their current line up meets your criteria? I find myself more and more drawn to a new golf GTI or TDI when my current commuter mazda 3 gets ready to expire. I keep my hopes up for a GTD, but they delayed the american release for some reason. Not "havevw" because both my wife and I had them before we got married, and agreed we didn't need to spend most of our married lives driving our cars to/from the mechanic If I knew they'd be reliable, there are a few VW models I'd consider, but I'm still not convinced. Probably will never be again I can understand the TDI thing if you have a fun car too - I don't have a fun car, so I have to have a DD that's somewhat fun. And generally need 4 doors, and wife would prefer auto so she doesn't have to relearn manual that's she's only driven a few times. Plus, I do encounter my share of commute time.. Ideal type of car (for now): Focus RS / STI / MS3 / etc hatch with Recaro seats, decent leg room (our girls will be TALL), 4 doors (a must) and dual-clutch or auto trans. Who knows - maybe the new WRX CVT in a few years. Wouldn't trust a VW dual-clutch trans as far as I could throw it.. Link to comment Share on other sites More sharing options...
TRSCobra Posted September 24, 2014 Author Share Posted September 24, 2014 Yeah I'd need an automatic type trans, too. I've got a 100 mile daily commute and it's hell with a stick. My mazda has been really good in the 2.5 years I've owned it (69k miles!), but I'm kind of wanting a nicer and slightly faster car, as I spend so much time in it. VW seems to fit the bill, but their relibility reputation has me concerned. Maybe I'll get the next gen mazda 6 if they have the diesel by then. Link to comment Share on other sites More sharing options...
hadvw Posted September 24, 2014 Share Posted September 24, 2014 Yeah I'd need an automatic type trans, too. I've got a 100 mile daily commute and it's hell with a stick. My mazda has been really good in the 2.5 years I've owned it (69k miles!), but I'm kind of wanting a nicer and slightly faster car, as I spend so much time in it. VW seems to fit the bill, but their relibility reputation has me concerned. Maybe I'll get the next gen mazda 6 if they have the diesel by then. We had an '05 Madza 3 sedan for approx 3 years, until the 2nd baby came and we bought my wife a minivan. Nice car, a bit of quickness off the line. 4 spd auto had fast shifts, but a little lacking in mpg. If Mazdaspeed3 came in auto, would probably already own one instead of the LGT.. Link to comment Share on other sites More sharing options...
TRSCobra Posted June 27, 2015 Author Share Posted June 27, 2015 [ame=http://www.youtube.com/watch?v=FU71B78k9aw]Erik Bengtson cam only Z06 - YouTube[/ame] http://i12.photobucket.com/albums/a204/TRSCobra/20150404_162725_zpswgyp6exg.jpg No changes to the car this year, just practicing my launch. Got my 60' time in the 1.7 second range, but it has 1.5 in the setup. Unfortunately, the car is down on power now (488whp on a dynojet vs 510 on a mustang dyno last year) and has a bit of knock retard in my datalogs. Still, a 11.14 is good enough for me until my next round of mods in 2016. Link to comment Share on other sites More sharing options...
BDII Posted June 27, 2015 Share Posted June 27, 2015 That's great, but you still owe me a 10 second car Need forum help? Private Message legGTLT Link to comment Share on other sites More sharing options...
TRSCobra Posted July 19, 2015 Author Share Posted July 19, 2015 Raced a 2012 R8 V10, the AWD got me on the launch though. Even with my drag radials at 18psi, I just spun through first gear. Couldn't catch him by the yellow flag finish for dig races. [ame]www.youtube.com/watch?v=40kJgkS6i5U[/ame] But from a 40 roll... [ame]www.youtube.com/watch?v=mZUiySol420[/ame] This guy called me out a while back with his stock motor 2v mustang GT. He's got a big single turbo on it and puts down an estimated 550whp. [ame]www.youtube.com/watch?v=RaGNu8yq6Fw[/ame] Here's a clean e46 M3 with 600whp from a turbo (also stock motor) and SMG trans. [ame]www.youtube.com/watch?v=BhWTWTTO02s[/ame] And a stock '14 GT500 with drag radials and exhaust. I missed the second gear shift and couldn't pull on him after that. That was my first roll race of the day and I started in second gear after that. [ame]www.youtube.com/watch?v=13Vy4YJEEXo[/ame] Link to comment Share on other sites More sharing options...
BDII Posted July 19, 2015 Share Posted July 19, 2015 Granny shiftin' not double clutchin' like you should. You're lucky that hundred shot of NOS didn't blow the welds on the intake! Need forum help? Private Message legGTLT Link to comment Share on other sites More sharing options...
TRSCobra Posted October 25, 2015 Author Share Posted October 25, 2015 So I went back to my tuner and he leaned it out to around 12.8. Came in at 473whp and left at around 493 (forgot to ask for a printout), but I gained ~20whp across the entire powerband. Went to a track rental yesterday and pulled my best time ever. http://i12.photobucket.com/albums/a204/TRSCobra/20151024_122146_zpsw0d9uhrc.jpg Tuner says I should be making more power with the heads/cam, and I'm considering changing it out, but I'm going to see how it responds to full bolt ons first. If I get 560 or more on his mustang dyno with halltech/nw102/msd/arh, I'll keep this cam. if not, a BTR stage 2 or 3 is likely going in. Overall, I can't complain too much! Link to comment Share on other sites More sharing options...
tommypenguin Posted October 26, 2015 Share Posted October 26, 2015 What's your cam profile looking like? Ten seconds NA is screaming. Link to comment Share on other sites More sharing options...
TRSCobra Posted October 26, 2015 Author Share Posted October 26, 2015 What's your cam profile looking like? Ten seconds NA is screaming. 236/245@.050 duration, .648/.650 lift, 114 LSA Relatively mild for an engine with this much displacement. Link to comment Share on other sites More sharing options...
Penguin Posted October 27, 2015 Share Posted October 27, 2015 Will your heads flow well past .648/.650 valve opening? Just curious. Link to comment Share on other sites More sharing options...
TRSCobra Posted October 31, 2015 Author Share Posted October 31, 2015 I believe they continue to gain flow up to .700 but I can't find the flow bench numbers anymore. I'm actually a bit high for lift on the stock rockers though. They start side loading the valve guides at like .640 and higher. Link to comment Share on other sites More sharing options...
Penguin Posted October 31, 2015 Share Posted October 31, 2015 Time for a roller rocker set then. Come to think of it if you change the geometry on those, you might pick up more valve lift with a different ratio. What is the stock roller rocker ratio anyway? Link to comment Share on other sites More sharing options...
TRSCobra Posted October 31, 2015 Author Share Posted October 31, 2015 To do that I need to have the rocker pedestals machined off the heads, and a good set of Jesel rockers is $3k. Not worth it for a street car, IMHO. Stock ratio is 1.8 on the LS7. Yella Terra makes roller tip rockers that bolt up to the factory pedestals, but they add quite a bit of weight to the valvetrain. Most shops prefer just using the lightweight stock rockers. Link to comment Share on other sites More sharing options...
Penguin Posted November 1, 2015 Share Posted November 1, 2015 Roger that. Clearly it's time to pull the whole engine and replace it with an RHS tall deck, and build from there. It's only money, and even better not my money. Link to comment Share on other sites More sharing options...
TRSCobra Posted November 1, 2015 Author Share Posted November 1, 2015 I always have that idea rolling around in my head. I can sell the longblock for probably $11k as is, then use that money plus another $10k for a forged RHS setup that will handle a lot more power. Way better than blowing mine up and needing over $20k I suppose! Gotta boost it at that point. Or I could do a LSX block and ruin the weight distribution. Link to comment Share on other sites More sharing options...
Penguin Posted November 1, 2015 Share Posted November 1, 2015 Well if 1/4 mile is all you care about a blown or turbocharged GM performance LSX iron block build would be cheaper (by a little) than sticking with aluminum. If I had the $$$ though, for a Z06 I would stick with aluminum for block material, and to keep the motor more throttle responsive and simple I'd stick with natural aspiration. Just add more displacement and of course build it with parts that can support around 470 cubic inches. For longevity I would probably not stroke a tall deck block out to the max stroke to avoid wearing out piston skirts prematurely. How much power are you looking to make? Link to comment Share on other sites More sharing options...
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