w00t for successful turbo install!!
I'm made of meat!
Joined: Mar 2003
Posts: 3,580
Likes: 0
From: Richmond, VA
Oh dang. I never got email reminders for that thread for some reason. Okay. I'll do it, weather permitting. I've got an embarassing squeaker of a boost leak to fix, and now that I'm running 19PSI (I put the boost controller on the car finally) it's more like an air-horn than a squeak, making me run pig-rich, too.
4500rpm hesitation
Joined: Jun 2003
Posts: 4,374
Likes: 0
From: Hesperia
Originally Posted by s1ngle
you wont have many traction issues on like 3-5 psi....
thats not entirely true.. I have traction issues with my swap and just boltons... its cuz I got crappy tires... lol =D
I'm made of meat!
Joined: Mar 2003
Posts: 3,580
Likes: 0
From: Richmond, VA
No, not at all. You do the test with the engine off. The tester plugs up the turbo inlet. The air is stopped by the valves, so the test includes your engine's throttle body, intake manifold, and all of your vacuum lines. I've had professional mechanics tell me I was crazy and that this would never work because the air will leak past the valves. WTF? At no point does your engine have all 4 valves in any cylinder open at once. DSMers have been doing this for 14 years. It works. If you have a bent or burnt valve, it won't, but it will help you diagnose a healthy motor.
It will and should leak very slowly past the rings unless you oil all of the cylinders first, but by no means do you need to do that to test it. It's easy enough to just blow some air pressure into it, listen for leaks, and if you're not sure exactly where it's coming from, spray it down with soapy water and look for bubbles. You'll definitely see them if it's leaking. You'll be surprised at what you find. I've leaked boost from my TPS sensor harness (electrical part) before... where the actual wires were coming out. Bad throttle body shaft seals were the cause.
Putting a gauge on your tester (I used a $2 tire gauge and some $.50 NPT fittings) lets you know at what point you'll blow your IC pipes off (not so funny story), or at what PSI your BOV/etc. starts leaking. You can get a friend to watch your gauge, but the one on the tester is the shit because you can do it by yourself and get better info.
It will and should leak very slowly past the rings unless you oil all of the cylinders first, but by no means do you need to do that to test it. It's easy enough to just blow some air pressure into it, listen for leaks, and if you're not sure exactly where it's coming from, spray it down with soapy water and look for bubbles. You'll definitely see them if it's leaking. You'll be surprised at what you find. I've leaked boost from my TPS sensor harness (electrical part) before... where the actual wires were coming out. Bad throttle body shaft seals were the cause.
Putting a gauge on your tester (I used a $2 tire gauge and some $.50 NPT fittings) lets you know at what point you'll blow your IC pipes off (not so funny story), or at what PSI your BOV/etc. starts leaking. You can get a friend to watch your gauge, but the one on the tester is the shit because you can do it by yourself and get better info.
clutch slipping boost
Joined: Jun 2003
Posts: 1,696
Likes: 0
From: Minneapolis MN, Golden CO
Originally Posted by Jafro
Oh dang. I never got email reminders for that thread for some reason. Okay. I'll do it, weather permitting. I've got an embarassing squeaker of a boost leak to fix, and now that I'm running 19PSI (I put the boost controller on the car finally) it's more like an air-horn than a squeak, making me run pig-rich, too.
just kidding jafro....
I'm made of meat!
Joined: Mar 2003
Posts: 3,580
Likes: 0
From: Richmond, VA
There's a sneak-preview of the Boost Leak Testing photos at the this address:
http://homepage.mac.com/jafro/PhotoAlbum15.html
I recommend watching the slide show.
These are the "cliff notes". I'll be writing the big one on HAN when I'm not as tired. I started to, but I'm too tired. I didn't take pictures of all the stuff I fixed, but I documented the HOW TO boost leak process, and the tool I made to do it with.
:sleep:
http://homepage.mac.com/jafro/PhotoAlbum15.html
I recommend watching the slide show.
These are the "cliff notes". I'll be writing the big one on HAN when I'm not as tired. I started to, but I'm too tired. I didn't take pictures of all the stuff I fixed, but I documented the HOW TO boost leak process, and the tool I made to do it with.
:sleep:
I'm made of meat!
Joined: Mar 2003
Posts: 3,580
Likes: 0
From: Richmond, VA
I slept. Goin' out to dinner w/tha female. I'm so glad she puts up with all my car stuff.
Man, all I have to say is that 21PSI IS INSANE. Once I fixed my boost leaks, I gained a few PSI of boost pressure, and my fuel pressure raised 6 PSI. Keep in mind that a fuel pressure regulator is driven by vacuum pressure. There's a good reason to test your turbo car.
Man, all I have to say is that 21PSI IS INSANE. Once I fixed my boost leaks, I gained a few PSI of boost pressure, and my fuel pressure raised 6 PSI. Keep in mind that a fuel pressure regulator is driven by vacuum pressure. There's a good reason to test your turbo car.
