Would having no wastegate flapper make car run bad?(PICS ADDED)

[SnowBird]

I ask this because I just took off my 14B and the housing is so cracked around the flapper it mine as well not be there, it is obviously leaking like crazy and when its shut you can almost slide a penny through it. Would a leak like this cause my car to rev up super slow? This is my first turbo car with problems, so thanks in advance.

 

[xveganxcowboyx]

Your car will not be able to boost properly, because the exhaust gasses will be bypassing the turbine via the wastegate. No ill effects other than loss of power.

 

[luvmygst]

The crack is pretty common and usually not a major problem. Its not a good thing but the turbo will still operate and build boost, unless its bigger than any I have seen you probably wont notice a difference. As for the wastegate the stock actuator doesnt have the travel to open it all the way. Unless you have problems with boost creep that isnt a problem either.

 

[xveganxcowboyx]

The crack in your wastegate won't effect your compression, only your boost pressure. 120-125 is at service limit, but you're still doing better than me.

Fortunately for you 14b junk is cheap.

 

[romeen]

The loss of power could be from a boost leak. Pressure test your intake.

 

[SnowBird]

So, are these normal cracks? Or would any amount of cracks not kill power significantly?

 

[delta448]

Those cracks are a common issue, seems to be a weak point in mitsu turbos. If it is not allowing the flapper to close, or is a large enough bypass, your spool time goes to crap. You can remove the flapper, port the seat out and run an external wastegate on the O2 housing if you have an O2 housing like this one. Other options would be to replace the turbine housing, or replace the entire turbo.

 

[SnowBird]

Those cracks are a common issue, seems to be a weak point in mitsu turbos. If it is not allowing the flapper to close, or is a large enough bypass, your spool time goes to crap. You can remove the flapper, port the seat out and run an external wastegate on the O2 housing if you have an O2 housing like this one. Other options would be to replace the turbine housing, or replace the entire turbo.

Ok, thanks, I figured even if there wasnt a flapper the car would still operate. I currently have full 3 inch exhaust with a cutout and I ordered a o2 with dump. I currently have a new short block waiting to go in also. Scrapping this turbo and getting a E316G, but have to wait for tax return to buy the MHI. The cheap turbos are tempting, but I dont want to hear " I told you so". Thanks to everyone for their input, this is just my first Turbo ride that is problematic, so Im still learning, I found out quick how much more a turbo system complicates things.