Cracked hot side = okay?

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Oct 19, 2015 | 03:03 PM

#16

kikiturbo

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Joined: Mar 2008

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From: Croatia

Quote:

Originally Posted by Erik@MIL.SPEC

So, because of this, I had my new MHI hotside ceramic coated inside and out plus I had it cryotreated. We'll see if this helps or not in the long run. If all that doesn't work, then really, it's inevitable to see cracks in the divider wall with long term use.

comparing a 60000 mile unit to a brand new one, I can see the divider getting thinner from use.. and then cracking.. so I think it is inevitable.. Keep the EGT in check and enjoy while it lasts... I think you will go for something bigger after 50000 miles.. or no?

Oct 19, 2015 | 03:18 PM

#17

Erik@MIL.SPEC

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From: Los Angeles

Quote:

Originally Posted by kikiturbo

Well, I got 115,000 miles out of my OG FP Green. It only had the outside of the hotside ceramic coated. Hoping the cryo + ceramic on the inside as well (on the scroll divider housing) helps keep the housing in one piece longer than normal.

Plus, hopefully EGT's on E85 are lower as well. Time will tell

Oct 19, 2015 | 03:37 PM

#18

WRC-LVR

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From: Marietta GA

Quote:

Originally Posted by kikiturbo

I have worked on a car with a problem like that.. and it had a crack in the manifold to housing gasket + a major problem with the wastegate flapper not sealing propperly... I woul look at that first..

My car, with a crack in the volute divider always had slightly slower transient response than a car with a good turbo..

Ahh ok then i will check that out when i take the turbo off. I did think about teh WG flapper not sealing properly. My car requires several 1/2 turns on teh WG adjustment other wise it is at 4000 before it hits 20 psi. Forge WG BTW Once adjusted properly as said then i get 20 at 3600 and 27 by 4000.

Thanks for your input, Kikiturbo !!