98camarod's twin turbo build
#121
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I've had quite a few things happen since I last posted in the thread, but so far the best et I have is on 9lbs in the 1/4 10.23@135mph. I have since raised the boost to 20lbs. I did that and went on a tnt night at the local 1/8 and destroyed the trans. I took it out and found out that I only burnt some clutches. I had it rebuilt and went back out and tried launching at 3000rpm and 3300rpm and couldn't get enough boost off the line, 4.5lbs at that level. So i bought a wet kit and I'm installing it now. I also bought some AFR 210 heads, DA versashocks for the front, adjustable lower a arms, and a manual rack. I also installed a 10pt cage over the past winter. I had it weighed when I went to the 1/4 track and it was 3525 with me in it.
Here's some pics:
![](http://i88.photobucket.com/albums/k199/Therod0120/20130401_204228_zpsa3d32c72.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130312_153800_zps4bf4968d.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130424_194026_zpsa0f697e1.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130424_194051_zpsc5a72023.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130505_123219_zpsaa885906.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130711_211155_zpsfa88dc3b.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130712_132308_zps29c5b428.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130724_190805_zps156bb5b3.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130906_140146_zps8b59309a.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_104953_zps83db968b.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_105150_zpsb47a06ec.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_081053_zps26f7f7cb.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_081039_zpsba8876e9.jpg)
Here's some pics:
![](http://i88.photobucket.com/albums/k199/Therod0120/20130401_204228_zpsa3d32c72.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130312_153800_zps4bf4968d.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130424_194026_zpsa0f697e1.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130424_194051_zpsc5a72023.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130505_123219_zpsaa885906.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130711_211155_zpsfa88dc3b.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130712_132308_zps29c5b428.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130724_190805_zps156bb5b3.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130906_140146_zps8b59309a.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_104953_zps83db968b.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_105150_zpsb47a06ec.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_081053_zps26f7f7cb.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130917_081039_zpsba8876e9.jpg)
![](http://i88.photobucket.com/albums/k199/Therod0120/20130920_052809_zps054d8ed0.jpg)
#123
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It should do that with ease at 20lbs of boost. My race weight wasn't far off yours and I went a best of 9.13 with only 15lbs. of boost.....that was leaving on 5 lbs. off the brake.
#126
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What chamber are on those AFR 210's? Did I read that you were able to leave on 4.5 lbs. of boost? If that's correct than you are leaving about where I normally did......was able to 60' in the 1.3x range with that. Tried leaving on more once and the car went skyward.
Your 347 numbers at 9 lbs. isn't far off of what my 402 did at that level. I was trapping around 140 at 10 lbs.
Your 347 numbers at 9 lbs. isn't far off of what my 402 did at that level. I was trapping around 140 at 10 lbs.
#127
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What chamber are on those AFR 210's? Did I read that you were able to leave on 4.5 lbs. of boost? If that's correct than you are leaving about where I normally did......was able to 60' in the 1.3x range with that. Tried leaving on more once and the car went skyward.
Your 347 numbers at 9 lbs. isn't far off of what my 402 did at that level. I was trapping around 140 at 10 lbs.
Your 347 numbers at 9 lbs. isn't far off of what my 402 did at that level. I was trapping around 140 at 10 lbs.
The AFR's that I bought are 66cc's. I forgot that I also picked up a bigger cam, I will install that with the heads and make sure I have sufficient PTV clearance. This will all be over the winter.
#133
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Time for some winter changes.
-Custom turbo cam from Martin
-Better sized turbos, Turbonetics 6665's
-Install manual rack and pinion
-AFR 210's
I pulled everything off in to do the heads/cam turbo swap. Ran into a problem and stripped the cam retainer plate threads. All because I'm retarded. So, to fix it I helicoiled them. In the process of doing the last one, which happened to be the bottom one, I didn't realize it wasn't a blind hole like the other three. So now the motor has to come out to verify no metal shavings went down into any crevices. I'm 90% sure that I got all the shavings since I had a grease on the tap which all the shavings stuck to. Also the drill didn't go all the way through, there's a spot for it to stop with a smaller hole. However, I really don't want to take that chance so the motor's coming out.
![](http://i88.photobucket.com/albums/k199/Therod0120/20140105_085808_zpse8209711.jpg)
cam retainer bolt thread:
![](http://i88.photobucket.com/albums/k199/Therod0120/20140105_101541_zps7e7d293f.jpg)
cam retainer plate threads fixed, torqued down:
-Custom turbo cam from Martin
-Better sized turbos, Turbonetics 6665's
-Install manual rack and pinion
-AFR 210's
I pulled everything off in to do the heads/cam turbo swap. Ran into a problem and stripped the cam retainer plate threads. All because I'm retarded. So, to fix it I helicoiled them. In the process of doing the last one, which happened to be the bottom one, I didn't realize it wasn't a blind hole like the other three. So now the motor has to come out to verify no metal shavings went down into any crevices. I'm 90% sure that I got all the shavings since I had a grease on the tap which all the shavings stuck to. Also the drill didn't go all the way through, there's a spot for it to stop with a smaller hole. However, I really don't want to take that chance so the motor's coming out.
![](http://i88.photobucket.com/albums/k199/Therod0120/20140105_085808_zpse8209711.jpg)
cam retainer bolt thread:
![](http://i88.photobucket.com/albums/k199/Therod0120/20140105_101541_zps7e7d293f.jpg)
cam retainer plate threads fixed, torqued down:
![](http://i88.photobucket.com/albums/k199/Therod0120/20140105_121624_zps36a5c517.jpg)
#135