Thread: advice

hello i am wondering what the waste gate sizes are and what they do different. i ask this cause im sick of buying 10 setups. i want to make this go around the last one. i want to go with a tial waste gate and bov with 6262 turbo and fab my own manifold. thanks

Get a 44mm tial or a 46mm precision they use the same flange and will be fine for your setup.

Yeah 44mm or larger your your going to have boost creep with the 6262. Im still running a tial 38 on my setup but thats because I dont plan on making any less than about 25lbs of boost until it presents a traction problem. Then i might add in another 38mm gate.

On my 60mm 60 trim turbo setup I had boost creep as well, 1 bar spring I would see 20psi by 8k rpm.

44mm gate should be perfect for you

have you ever ran this setup.... i didnt get creep on mine with the 38

On my set up I will be running pretty much what you mentioned. A 6262 with a Tial BOv and a 38 mm gate. I plan on going up on the boost so I am not concerned with creep if in fact it does happen.

We have yet to see any major let alone concerning creep with big turbos and a 38mm gate.

never ran a 6262 but ive been on a 38mm gate and like I said even with a smaller turbo than the 6262 I was getting boost creep. A larger compressor is only going to make things worse. Im sure some of it has to do with wastegate placement too, mine has always been at a 90 deg angle on the collector so more focusing on the turbo than the wastegate.

With my t67 h.o. setup the creep was even worse. I was seeing 22-23psi by 8700rpm. But again to me I really didnt care. We will see how the 38mm gate does with the s400 67mm Might not be as bad being the turbine is 83mm so its going to require more exhaust energy anyways. If i get too much creep and it makes traction impossible in 1st and 2nd then ill add another 38mm gate onto the collector.

the reason you got creep is because your manifold puts the wastegate in a crap spot to be honest. its really hard to get the wastegate in a correct spot with our cramped engine bays

And that 90 degree right there is probably your BIGGEST issue as far as boost creep is concerned and not the size of the wastegate discharge itself.

Just from simple flow dynamics; flows have a hard time while in transit, to come to a complete stop, turn 90degrees and then sped back to its original pace without causing a significant amount of accumulation at the corner, hence a blockage which translates into less "area" of flow. Smaller area = smaller flow volume. Its just a snowball effect at that point.

Ashton, without being a dick here, but it seems you like to spout alot of "info" without proper logic behind your posts............I know you are trying to help, but without proper explanation and proof, alot of the up and comers will end up drawing the incorrect conclusions, making massive mistakes and simply throwing a fit.

In addition, you have never ran a 6262 on a 38mm gate, so how are your "statements" valid without several (seemingly wrong) assumptions??

Just think before you post more often than not

http://www.stevericeracing.com/wasteg1.gif

lol, I already stated the fact that my wastegate position had a lot to do with the creep. What part of that did you not get. I more than understand the dynamics of flow here. Jesus. lol.

Fact is ive used larger setups here than 99% of the members on here and have my own results with them. Most manifolds i want to say 99% of them come with the wastegate flange positioned at a 90 deg angle on the collector. So unless he has a manifold that does a proper 45 deg angle off the collector then he will have exactly the same issues as me. FACT!!! Not assumptions. FACT.

So he can do one of two things. Get a larger wastegate to make up for the crappy positioning of the wastegate or use a 38mm gate with a properly positioned gate. Simple as that. There was nothing that Ive said that was wrong or assumptions. All FACT, All personal experience. 60 trim turbo setup and T67 h.o. setup (larger turbo than the 6262)

So im gonna take it as a dick but I never just spout off info that is assumption. If i say something incorrect im more than willing to correct myself and appologise. In this case I will not because I am correct in everything ive said in this thread.

Ashton, read your posts again and look at it from the view point of someone with limited knowledge and tell me if it still makes sense.........Even from my view point it still sounds as if you are putting an emphasis on wastegate SIZE as compared to wastegate LOCATION.



That statement alone is extremely misleading, as you are basically saying "yeah, I know my location is incorrect, but whatever". Then you go on to say;



To me (and I am sure a majority) you are making two entirely different claims without a proper definitive answer as to WHY you have creep..........

Again, your emphasis from your first post onwards is about SIZE and not PLACEMENT. And let me point you in the direction I am referring to



MANY of your statements are extremely misleading and will send people in the incorrect direction a majority of the time.

Look, I am not saying you do not know your stuff, but just try and put some logic behind some of your observations when you post to atleast form some sort of clarity and direction. Thats all I am saying

I don't want an apology (as I don't have an ego to feed), and I couldn't care less as to what setup you have used quiet frankly, as data without proper data reduction is just a bunch of ones and zeros. I just want the CORRECT info to be presented, and not a significant amount of convoluted and misdirected information.

Cheers