HEUI Troubleshooting - Injection Pressure Desired and Actual Mismatch

[Keith Knight]

Mine is definitely a one piece filter housing.

 

[GeneralDisorder]

It looks like the spacer is still attached to the cooler? Isn't there a gasket between the cooler and spacer?

There's two of one gasket - block to spacer, spacer to cooler. And one of the divided gaskets - cooler to filter head/plate.

 

[Keith Knight]

Plus the divided twin inlet turbo gasket,
I think this will cover everything needed.

 

[Keith Knight]

Found the last piece of the puzzle!
Is there anything you can see that might be missing?

 

[GeneralDisorder]

The turbo exhaust gasket that CAT gave me was fully rectangular without the bolt "bumps" on the short sides. Probably irrelevant. Make sure it's got a fire ring though. It's going to see ~60 psi of pressure.

 

[Keith Knight]

I’ll visually look at the existing gasket. It took forever to find that thing. It was in a turbocharger install kit from cat and in the kit all the o-rings and gaskets that I had posted in the image earlier. Which gave me confidence that this is correct for our engine. Plus the last image it says factory fit 3126 with my engine serial number.

 

[GeneralDisorder]

Yeah looks right. Just not what they handed me. Probably you'll get the same thing I got. End of the day it's a standard T3 divided port turbo gasket. They are under every rock from a million suppliers.

 

[Keith Knight]

They look like the are sold in many thickness variations from single sheet metal to multi layers to cat design.

 

[GeneralDisorder]

They look like the are sold in many thickness variations from single sheet metal to multi layers to cat design.

You want an MLS (Multi-Layer Shim) style WITH a fire ring to prevent the exhaust gasses from working their way between the layers. If you want a really high quality (better than CAT) alternative, this is one option:

GrimmSpeed Multi-Layer Gasket for 4-Bolt T3 Divided Turbo Manifold | eBay

Well Grimmspeed™ has your answer, a premium multi-layer stainless steel w/ stainless steel fire-ring gasket at a great price. Another thing that you'll notice is that we've opened up the bolt holes to 12.5mm and slotted them 5mm to ensure that you've got flexability, even with custom made turbo...

www.ebay.com

 

[Keith Knight]

That’s why I was going with the caterpillar gasket.

 

[aw113sgte]

Tried the SIS 2.0 on the website, pretty lacking in some details, but actually seemed to use my trucks serial number instead of saying "can't find" like the main parts search. (this is for a C7). However, there are two options shown with different quantities.

 

[Keith Knight]

Thanks, With all the parts individually I plan to go to Cat tomorrow and see if they have a kit that has most of the parts then purchase what’s missing individually.