scm6152 with 3" inlet

[91-gsx]

I am going to get this turbo but have read that it does have problems surging with the 3" compressor cover. I would like to go with the 4" inlet but that cost $70 more at dejontool then this webiste http://www.maperformance.com/store/p...3&cat=0&page=1

Some guy I guess spammed that link in another thread, but a hell of a deal none the less. I would like to make a cold air intake for whatever turbo I run from now on because I know they help you push the envelope on a tune. But it is a lot easier to make a 3" cold air intake fit then it is to make a 4" cold air intake fit. I am just stuck because I want the ease of making a cai on either turbo but it is hard on the 4" while it is easy on the 3" cover, but the 3" cover might make the turbo surge which worries me as well. I am going to run it full t3 with a .82 a/r for better top end with that turbine wheel. I also read that if you have less exhaust restriction such as the .82 a/r turbine hosuing, that the surge might not take place at all.
Please help because I know what I want but need some experience.

edit: They also have a S cover available as a free upgrade, that is a 4" cover, but will it prevent surge without the anti-surge ports?

 

[nikkeebabee]

its only a 50 dollar difference if you go through dejon tool....they are on sale their with the sp cover for 729....im buying one next week....

There are lots of people going very very fast with the standard cover, I can't tell you exactly how many experienced surge tho.

I know if you look in my thread in the turbo section there was a few people that did experience some surge issues, but i think that was with the bolt on housing...

 

[fulanititoo8198]

I haven't surged with the t04e then again I've only taken it to 16lbs. I've read about others not surging as well, search some more their is a few threads about it.

 

[wishihadatalon]

for future reference if you are looking at a t3 version of this turbo you are looking at the sc61. Pretty sure the M in SCM is for mitsubishi housing. Anyway like you I plan on changing out my .63 a/r housing in favor of the .82. I have been told that if I see any surging it will very minimal. It scares me but the only way I will know for sure (because there are mixed opinions and results) is to try it for myself and see how it goes.

 

[91-gsx]

The thing about the dejontool sc61 is that the guy I called told me that if I were to buy the sc61 from them with a .82 a/r housing, that it would no longer be a sc6152, but a sc6176 because that is the only wheel that they make it with that goes into a larger .82 a/r. The sc6176 has the bigger a/r and a bigger turbine wheel, so more flow overall but I do not know much about the sc6176, and do not want a very laggy turbo if I were to go with that option. A little more lag for a bigger turbine wheel that flows more air and is more efficient, I would definately go with that option, but as I said not much info on that turbine wheel. Now I look at the site i linked above and they have an option for a .82 a/r housing with the t350 turbine wheel on the sc6152. So you see even though I know what turbo I want it is still hard to choose the right combination. I read the sc6176 also flows up to either 680hp with the standard E cover so obviously with the 4" SP cover it is capable of more power then the sc6152, wich is 630hp with the E cover and 680hp with the SP.

Here is a link I just found, clears up a few things for me. If you scroll down you can see that there are 3 turbine options which i did not know about. the 52 turbine, 69, and the 76.
http://www.turbogoods.com/index.asp?PageAction=VIEWPROD&ProdID=20
Now just to find out how late the spool is with the sc6176.
later

 

[wishihadatalon]

Pretty sure the 6176 has the p-trim wheel on it which is what I have. I have a .63 a/r housing on mine but I think it was a machined to fit.

I have no first hand experience to add about when it spools or the power it makes because its just sitting on my tool box collecting dust

 

[Boostn4]

I have the 6076RS, TO4s, p-trim 76 exhaust side, .63 A/R t3 turbine housing. I see full boost on my stock 7-bolt/1ghead - intake / at around 4600-4800. I also flow consistent 47-49 lbs/min @ 23-24 psi on 2g mas.