Jason's reverse Build
#321
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It's been awhile since I have done an update on all the changes. Recently decided to make the car quieter so I can get under the limit at a few tracks that I run. The dump tube is now routed back into the exhaust and it's extremely quiet now. The brakes needed to be upgraded so I went with the Trackspeed BBK, thanks Savington. So far getting bit by the track bug has been one of the best things to ever happen to me. It's really changing the way I want to mod the car.
Unfortunately I haven't been able to make a single event in the Miata and today wasn't any different, had to fall back on the SLK again. Last night after finishing up the exhaust I made a few pulls and the intake manifold burst under 17.4# of boost. I'm planning on pulling it this week and will post some pictures when I do. For now, here's a picture of the from when I was test fitting the calipers.
Unfortunately I haven't been able to make a single event in the Miata and today wasn't any different, had to fall back on the SLK again. Last night after finishing up the exhaust I made a few pulls and the intake manifold burst under 17.4# of boost. I'm planning on pulling it this week and will post some pictures when I do. For now, here's a picture of the from when I was test fitting the calipers.
#327
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Thank you.
Last edited by JayL; 03-22-2010 at 11:33 AM.
#328
Yes, this is the Flipside manifold and the planned changes to prevent something like this from happening had NOT been done yet. From what I can see it came apart across the entire top seam where the plenum is welded to the runners. I left a message for him this weekend, but I haven't heard back yet. Even though I don't think he wants to continue working with me on this project, I would think he'd be interested in seeing this. That's all I can really say at this point until I get the manifold off and get some trained eyes on it. It's all part of the development process and as disappointed as I am, I was more upset about not having the car for the track yesterday.
Do you still have your factory manifold for the time being?
#333
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The V6 in the Benz made it fun to drive, but I could be in a Yugo and it would be more capable than the driver at this point. I have so much respect for the instructors that are helping people like myself learn to drive on the track safely. Hopefully someday I will be able to give back to the sport as well.
#339
Well, as I was the only other person there, I'm going to go ahead and chime in to avoid speculation. It wasn't a backfire. We started up Jason's car and got it to the shop where he had some exhaust work done. After his car got down off of the lift, he did a few WOT pulls to test everything out. Everything worked as expected at that point. On the way home, the car was running fine for a while, but we pulled off when Jason noticed that his maximum boost level kept getting lower and lower. He then proceeded to putt the car home where we then noticed the crack.
To me, this says that it was forced open under boost pressure and then ripped apart. If it had blown open due to a backfire (which once again, the manifold was fine when we started working on the car, and it never once backfired) it would have just blown out, not slowly been torn apart.
To me, this says that it was forced open under boost pressure and then ripped apart. If it had blown open due to a backfire (which once again, the manifold was fine when we started working on the car, and it never once backfired) it would have just blown out, not slowly been torn apart.