****** TTG35forT - Rev 2.0 ******
11-04-2009, 10:28 AM
#63
HPDS at Sebring last year before I damaged the rod bearings.
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On the back straight I was a little north of 160 and still accelerating when the instructor started tapping my hand to hold it there.
I was running 12 psi of boost that day.
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On the back straight I was a little north of 160 and still accelerating when the instructor started tapping my hand to hold it there.
I was running 12 psi of boost that day.
Last edited by ttg35fort; 11-04-2009 at 12:50 PM.
12-15-2009, 04:56 PM
#65
There were some issues that recently popped up during R&D. The issues are not only getting block guard in place (it's easy to just press one in), but welding a block guard in place so that it acutally serves it's pupose for providing sufficient long term structural support to the cylinders at the torque levels I will be running. Also, coolent flow is a concern. GTM has been through a number of CNC revisions and prototype blocks, but Sam believes it is very close.
Right now we are scheduled to have a meeting at GTM sometime between Chrstmas and New Years, and at that time everything with the short block is expected to be complete. Hopefully, the meeting will comprise me looking at the short block and inspecting the build sheet, and then it will ship to Japtrix to get everything together. I will take pictures and post them.
Right now we are scheduled to have a meeting at GTM sometime between Chrstmas and New Years, and at that time everything with the short block is expected to be complete. Hopefully, the meeting will comprise me looking at the short block and inspecting the build sheet, and then it will ship to Japtrix to get everything together.
I will take pictures and post them.
12-15-2009, 05:31 PM
#67
Thank you.
You'll notice I have the magnetic plate with my number on the passenger side. The one on the driver's side blew off earlier in the day, so I had to put the number on with painters tape.
I was running 12 psi of boost that day. I cant wait to get out there with the bigger motor running 20 psi!!!
Another thing to notice is how quiet the Greddy Evo TT exhaust is. Japtrix routed the dumps back into the exhaust rather than keeping them open. It did not seem to hurt the hp much, but keeps the SPL livable on a daily basis.
With the new motor, I am hoping to hit around 650-675 whp on pump gas, and 750 whp on 116 octane. Pump gas with meth injection should get me north of 700 whp. Also, with the turbos I have selected (3071/0.64 A/R) and the 4.0L motor, I should get very quick spool up. I expect to be north of 600 ft-lbs before 4,000 rpm, but we will see (and see if the Carbonetics tripple disk can hold it).
Everything is taking a lot of time, but I want to make sure everything is as close to being perfect for my goals as I can get it. I want this motor to last, and I plan on tracking it at least once a month.
You'll notice I have the magnetic plate with my number on the passenger side. The one on the driver's side blew off earlier in the day, so I had to put the number on with painters tape.
I was running 12 psi of boost that day. I cant wait to get out there with the bigger motor running 20 psi!!!
Another thing to notice is how quiet the Greddy Evo TT exhaust is. Japtrix routed the dumps back into the exhaust rather than keeping them open. It did not seem to hurt the hp much, but keeps the SPL livable on a daily basis.
With the new motor, I am hoping to hit around 650-675 whp on pump gas, and 750 whp on 116 octane. Pump gas with meth injection should get me north of 700 whp. Also, with the turbos I have selected (3071/0.64 A/R) and the 4.0L motor, I should get very quick spool up. I expect to be north of 600 ft-lbs before 4,000 rpm, but we will see (and see if the Carbonetics tripple disk can hold it).
Everything is taking a lot of time, but I want to make sure everything is as close to being perfect for my goals as I can get it. I want this motor to last, and I plan on tracking it at least once a month.
Last edited by ttg35fort; 12-15-2009 at 06:02 PM.
12-15-2009, 07:25 PM
#68
Here's your target then.
https://my350z.com/forum/shop-builds...tt-13-psi.html
That will put you at 200 ft-lbs more at 4000 rpms than XKR. you'll have 3 cars before he even gets his foot to the floor.
***my bad, that car had a 35 shot of nitrous as well. That means you really have your work cutout
https://my350z.com/forum/shop-builds...tt-13-psi.html
That will put you at 200 ft-lbs more at 4000 rpms than XKR. you'll have 3 cars before he even gets his foot to the floor.
***my bad, that car had a 35 shot of nitrous as well. That means you really have your work cutout
Last edited by str8dum1; 12-15-2009 at 07:39 PM.
12-15-2009, 07:40 PM
#69
Here's your target then.
https://my350z.com/forum/shop-builds...tt-13-psi.html
That will put you at 200 ft-lbs more at 4000 rpms than XKR. you'll have 3 cars before he even gets his foot to the floor.
https://my350z.com/forum/shop-builds...tt-13-psi.html
That will put you at 200 ft-lbs more at 4000 rpms than XKR. you'll have 3 cars before he even gets his foot to the floor.
That will be tough to match. He has a bit more displacement (4.24L vs my 4.0L), and I believe Greddy 18G turbos. The 18G turbos have a compressor that is a little smaller than my 3071s (68mm vs 71 mm). The turbines are relatively close in size, though. Between the extra displacement and smaller compressors, he is spooling up faster than I will be able to. Nonetheless, if I can get anywhere close to his mid-rpm torque, I will be very, very happy.
That car has to be an absolute blast to drive around! It would be nice for him to come on the forum and post his thoughts on the car.
Last edited by ttg35fort; 12-15-2009 at 07:43 PM.
12-15-2009, 08:16 PM
#70
PS build looks great and I can't wait to see the body mods and seats I wanted some Recaros as well but they don't seem to want to do custom colors anymore.
Last edited by Sylvan Lake V35; 12-15-2009 at 08:53 PM.
12-15-2009, 08:17 PM
#71
Here's your target then.
https://my350z.com/forum/shop-builds...tt-13-psi.html
***my bad, that car had a 35 shot of nitrous as well. That means you really have your work cutout
https://my350z.com/forum/shop-builds...tt-13-psi.html
***my bad, that car had a 35 shot of nitrous as well. That means you really have your work cutout
That build has 680 ft-lbs at 4000 rpm!!!
That will be tough to match. He has a bit more displacement (4.24L vs my 4.0L), and I believe Greddy 18G turbos. The 18G turbos have a compressor that is a little smaller than my 3071s (68mm vs 71 mm). The turbines are relatively close in size, though. Between the extra displacement and smaller compressors, he is spooling up faster than I will be able to. Nonetheless, if I can get anywhere close to his mid-rpm torque, I will be very, very happy.
That car has to be an absolute blast to drive around! It would be nice for him to come on the forum and post his thoughts on the car.
That will be tough to match. He has a bit more displacement (4.24L vs my 4.0L), and I believe Greddy 18G turbos. The 18G turbos have a compressor that is a little smaller than my 3071s (68mm vs 71 mm). The turbines are relatively close in size, though. Between the extra displacement and smaller compressors, he is spooling up faster than I will be able to. Nonetheless, if I can get anywhere close to his mid-rpm torque, I will be very, very happy.
That car has to be an absolute blast to drive around! It would be nice for him to come on the forum and post his thoughts on the car.
Sam
Last edited by Sam@GTM; 12-15-2009 at 08:38 PM.
12-16-2009, 07:21 PM
#73
heres another build that is interesting. didnt notice it before.
https://my350z.com/forum/shop-builds...cams-vpro.html
prolly very close to what you'll have.
^^ welll, where's the sheets, build info etc? I'm sure XKR woulda loved to see that before his tune was done and it woulda put to rest every questioned posed about the T25 GT35's making power..
https://my350z.com/forum/shop-builds...cams-vpro.html
prolly very close to what you'll have.
I'm sure XKR woulda loved to see that before his tune was done and it woulda put to rest every questioned posed about the T25 GT35's making power..
Last edited by str8dum1; 12-16-2009 at 07:22 PM.
12-17-2009, 08:01 PM
#74
Here are some photos of the prototype block. This is a junk block being used for R&D by GTM. The coolant passages have not yet been drilled out, but it gives an indication of what they are doing with my block. Needeless to say, I am excited as h@ll about this. It looks like everything is really starting to come together. Combined with the billet girtle, main caps and crank, my block should be very, very strong, and should hold up well for my target torque/hp.
Combined with the billet girtle, main caps and crank, my block should be very, very strong, and should hold up well for my target torque/hp.
12-17-2009, 08:15 PM
#76
I think they are running a billet girdle. I thought they were also running Darton sleeves. Are they not?
Also remember, they run their car for 9 seconds at a time. I'll be pushing it for 20 minutes each run.... That means a night and day difference on how you want to approach the build.
Also remember, they run their car for 9 seconds at a time. I'll be pushing it for 20 minutes each run.... That means a night and day difference on how you want to approach the build.
Last edited by ttg35fort; 12-17-2009 at 08:24 PM.
12-17-2009, 08:20 PM
#77
ahh u got me...
ya SP is running sleeves and a girdle
dammit. I dont wanna mess with my upper pan to girdle. I had to do that 3 times with my last build to stop my rear seal leak. blah.
we havent seen a block break with the stock girdle anyhow
ya SP is running sleeves and a girdle
dammit. I dont wanna mess with my upper pan to girdle. I had to do that 3 times with my last build to stop my rear seal leak. blah.
we havent seen a block break with the stock girdle anyhow
Last edited by str8dum1; 12-17-2009 at 08:21 PM.
12-17-2009, 08:29 PM
#78
The VQ block is aluminum, which means it is much more prone to flexing than a cast iron block. When it flexes, it puts a lot of stress on the bearings, which will tend to cause them to wear faster. The billit girdle adds rigidity to the motor, thus reducing the amount it flexes, which should prolong the life of the bearings in high HP builds.
EDIT: Also, one point to note is that I am building my car to be both for street and track use. If it were only for track use, I would NOT have gone with a stroker crank nor with the 3071 / 0.64 A/R turbos. Instead, I would have kept the stock stroke to allow me to rev higher, gone with larger turbos with a larger A/R, and use longer duration cams (e.g., 282 or 284 dur. cams). Such a motor would be very happy to rev, but would not be as fun to me as the stroker motor when driving around. I just happen to like the kick in the seat of a larger displacement motor. As I previously said, it is best to build the car for its intended purpose, which is what I am trying to do.
EDIT: Also, one point to note is that I am building my car to be both for street and track use. If it were only for track use, I would NOT have gone with a stroker crank nor with the 3071 / 0.64 A/R turbos. Instead, I would have kept the stock stroke to allow me to rev higher, gone with larger turbos with a larger A/R, and use longer duration cams (e.g., 282 or 284 dur. cams). Such a motor would be very happy to rev, but would not be as fun to me as the stroker motor when driving around. I just happen to like the kick in the seat of a larger displacement motor. As I previously said, it is best to build the car for its intended purpose, which is what I am trying to do.
Last edited by ttg35fort; 12-17-2009 at 09:00 PM.
