Almost finished!
Thread Starter
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Almost finished! Hey guys, just about gotter done... Just testing the line to the turbo and checking for leaks, got the boost gauge and BOV reference all plumbed up, and was able to pump oil from the motor to the back, and up into the valve cover through a 5/8" ID hose, big WHOOP. I do have a mocal, so don't flame, just had one quick question. What happens if you don't install the side vacuum line on the turbosmart WG? Why does it have to be installed on the charge pipe before the TB? Doesn't the spring inside the WG determine when it opens and closes? Just curious... Thanks in advance!
Tony
Tony
Originally Posted by JZ 97 SS 1500
Leave the WG with no hoses connected and it will default to the spring pressure.
JZ
JZ
Thread Starter
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
See, this is what I don't know. Do I need a reference to the charge pipe up near the TB? What would happen if I put the reference on the charge pipe coming right out of the compressor? Just some questions, I'd really like to figure this out!
doesn't really matter where it comes from, just need to have a reference on the side of the gate, the top can be open. If you pull it from the compressor however you will see less boost in the intake manifold. If your reference is in the intake the compressor will actually be above the spring level to maintain the right level inside the intake, therefore overcoming the losses through IC/piping/etc.
Last edited by Tiago; Dec 9, 2005 at 08:05 AM.
Thread Starter
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
For my application would it be better off up closer to the TB or should I get it from closer to the compressor? That makes sense though with the reference now, I didn't think of it that way, I figured it would just be based on the pressure on the inlet to the wastegate that would hold the valve open... Strange... Thanks for the answer.
I have a STS turbo on my truck and have added a intercooler to it. I referenced my wastegate to the intake manifold its self and the gate controls boost very well. Before the inter cooler, when it was referenced to the compressor snell, it wasn't as smooth and didn't hold the boost pressure as constant.
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Thread Starter
Joined: Sep 2004
Posts: 2,552
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From: Visalia, California
I was going to put it on the charge pipe before the TB, but you're saying you're referencing on the motor-side of the throttle body, like where you'd hook up the boost gauge, BOV, etc? Is it referenced from the brake booster, that's where I have my BOV and gauge hooked in. I'm dying to figure out where to put everything!
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Verdad Gallardo I was going to put it before the TB but all the other truck guys that have done it said they just used an unused nipple that is about half way back on the pass side of the truck intakes under the cover, so that's where I put mine. Having vacuum to it doesnt seem to hurt anything and I have my gauge and BOV T'd into the brake booster line. Has work great for the last 14,000 miles.
Thread Starter
Joined: Sep 2004
Posts: 2,552
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From: Visalia, California
Interesting, I'll probably put a bung on the MAF housing or something, not sure yet, but I have to figure out something, my new oil lines from the turbo (AN to NPT) are going to be here the middle of next week and I'm ready to go! I'm drilling/tapping the passenger side valve cover in the corner and putting a push-on fitting on it to run the 5/8" ID return hose to, and I have a chrome breather. Now where exactly is the PCV on this car? I bought a check valve so I wouldn't boost the crankcase, but not sure what that's all about, or where it goes... Any help would be much appreciated!
That's funny, I have the EXACT same set-up as you do, custom STS style MP T70, intercooler, Turbosmart 48mm 42#Furd injectors. I hope to have mine running again today, I started it last night just to verify it is running fine and today I will have it up and ready to go again. To bad there is over 8"s of snow on the ground! I have never had time to get mine dyno'd and tuned yet, I look forward to hearing your results. Looks like the only other differences are the cam and I have the 317 heads. Good luck brother!
Wolfee
Wolfee
BTW,
I just returned the oil into the pan, much better than the valve cover thing IMHO. As for boost reference, I place the vaccum hose fitting just before the TB. This works great, I initially didn't have one hooked up, the wastgate will NOT open where it's supposed to with out it. Deffinately hook it up.
Wolfee
I just returned the oil into the pan, much better than the valve cover thing IMHO. As for boost reference, I place the vaccum hose fitting just before the TB. This works great, I initially didn't have one hooked up, the wastgate will NOT open where it's supposed to with out it. Deffinately hook it up.
Wolfee
Thread Starter
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
I'm using 5/8" ID hose for the return off a 10AN fitting on the turbo, and had to get a 3/8" NPT to 5/8" hose (clamp on) fitting. How did you get your fitting in your pan, did you take it off and if so, how hard is it to do so? I've pulled the front down to do the cam swap, but haven't ever pulled it out. I'd much rather put it in the pan if it is still relatively easy. If you could attach some pics for reference, I would definitely use them! Thanks!