Turbo Waste Gate Flapper Mod

[1600dave]

How big is the hole to begin with?

I've got a turbo that's been modded, has a 37 or 38mm flap, but only a 30mm hole.

Also I noticed alot of cracks in around the port - its a ford rear housing. Is cracking in this area okay or going to cause problems?

[1600dave]

Some photos of the cracks.

Havent been able to find any others on the housing. anywhere in particular I should be looking?

[Rhino1980]

she farked bru

[Wenier]

You do have a lot of crack there. Bad part is they will keep working and getting bigger.

[1600dave]

So, if its left as is, what problems can it cause, as its obviously just going to get worse.

At the moment that's the only cracks I can see in it - none around the bolt holes.

[Bonjaz]

bump what is the size of the hole stock and what are people porting them out to??? is 30mm enough???

[HI PSI]

Read my previous post and click on the link for my pictures.

[Bonjaz]

excuse my ignorance, I had a look through how you did it but I couldnt see any exact measurements, I am also at work and the pictures are being gaaaaaaaay... would a 30mm port be enough to control boost at say 350+kw???

[HI PSI]

When you port the housing the wastegate exit, It will be ovaled not round. Due to the height restrictions of the upper and lower floor you can only take until it is level. So you then extend the port horizontally.. Once you have the housing in your hand you'll see what I mean.

[JVK]

Anyone come accross the larger flapper catching on the port and the way around it ?