2G Manifold Heat Shield/Melted A/C fan

[ryancampbell98]

This is the manifold I run. Doesn’t seem like the blankets or shields for the stock manifold and fp manifolds will fit this one. What can I do to manage the heat from this manifold? Heat wrap clearing isn’t working because the manifold has melted my A/C fan, unless I have an exhaust leak I don’t know…

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[Mello]

It's not the manifold that's melting the fan. The turbine housing, O2 housing, & downpipe are the culprids. If you're running external WG off the O2, then this too & don't overlook the WG dumptube.

 

[ryancampbell98]

It's not the manifold that's melting the fan. The turbine housing, O2 housing, & downpipe are the culprids. If you're running external WG off the O2, then this too & don't overlook the WG dumptube.

.Running the stock o2, now external dumptube

are you saying there is some sort of leak or something?

 

[chrysler kid]

Every time ive melted a fan it was from an exhaust leak at the flange where the turbo bolts to the manifold

Those ram horn style manifolds have cheap metal flanges that warp. No matter how tight you get them the flange leaks

 

[ryancampbell98]

This is good info. You’re probably right. I’ll look into it. I’m about to install new fans and I don’t want them melting.

Every time ive melted a fan it was from an exhaust leak at the flange where the turbo bolts to the manifold

Those ram horn style manifolds have cheap metal flanges that warp. No matter how tight you get them the flange leaks

Yea I ordered new gaskets because the ones that came with it just felt cheap.

 

[chrisman287]

Yea I ordered new gaskets because the ones that came with it just felt cheap.

If you can, hit the flanges with a belt sander.

If you can’t, hit the gaskets with a little copper spray.

 

[Mello]

I melted my fan and did not have an exhaust leak. Found that the hot spot radiating the most heat was right at the turbo housing outlet into the O2 housing/downpipe. An exhaust leak should leave a soot witness mark.

 

[SixBolt_16G]

I melted my fan and did not have an exhaust leak. Found that the hot spot radiating the most heat was right at the turbo housing outlet into the O2 housing/downpipe. An exhaust leak should leave a soot witness mark.

This is where Im at right now. No leak, but its getting so hot that its melting the edges of the fins.

 

[chrysler kid]

I melted my fan and did not have an exhaust leak. Found that the hot spot radiating the most heat was right at the turbo housing outlet into the O2 housing/downpipe. An exhaust leak should leave a soot witness mark.

You melted a fun running a stock turbo like the OP has? Or are you saying your highly modified car with an aftermarket wastegate melted the fans

Ive never melted a fan on a factory framed turbo except with one of those ebay manifolds

 

[ryancampbell98]

You melted a fun running a stock turbo like the OP has? Or are you saying your highly modified car with an aftermarket wastegate melted the fans

Ive never melted a fan on a factory framed turbo except with one of those ebay manifolds

I think my manifold is what is causing my problem. Cause my turbo is stock.

 

[Mello]

You melted a fun running a stock turbo like the OP has?

Yes. Happened to me with the T-25. Was still running the OE exhaust manifold. Had the lower heat shield off because I was connecting up a WBO2 for learning my AEM.

 

[chrysler kid]

Yes. Happened to me with the T-25. Was still running the OE exhaust manifold. Had the lower heat shield off because I was connecting up a WBO2 for learning my AEM.

Its 107 degrees here in texas and im not melting fans and my ac works. I guess thermal dyamics works differently wherever you live at

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[ryancampbell98]

The blue is awesome! It’s metallic correct?

 

[Mello]

I guess thermal dyamics works differently wherever you live at

Most likely. I'm at 6000 ft, air is thin (less density) and has a harder time carring the heat away probably. It was summer when I melted my fan & we see 100° plus temp for several days every year too.