Turbo downpipe flange

D

Dbordenb

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May 15, 2014
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I am trying to change my exhaust to a 5inch and I bought a 2nd gen downpipe with a hx40 flange that is smaller than the flange on my turbo. The flange is flat like a hx40 but measures 4 and 3/8 inch. The previous owner had a make shift down pipe set up on to fit the 2nd gen manifold an they used a holset elbow with number 3593384 on the side.

What flange adaptor do I need to fit the hx40 downpipe to the turbo?

Thanks,
David
 
Dbordenb said:
I am trying to change my exhaust to a 5inch and I bought a 2nd gen downpipe with a hx40 flange that is smaller than the flange on my turbo. The flange is flat like a hx40 but measures 4 and 3/8 inch. The previous owner had a make shift down pipe set up on to fit the 2nd gen manifold an they used a holset elbow with number 3593384 on the side.

What flange adaptor do I need to fit the hx40 downpipe to the turbo?

Thanks,
David
Click to expand...

Pm Hjoey, he has the adapter you need and clamps for,sale.
 
So you know for future reference the larger flange that's been machined flat is called a half marmon or 4.62.
 
And that is what my turbo has now, a half marmon? wouldn't a 4.62 be a 4 5/8 inch?

Maybe I am just measuring wrong but I think i have a 3/8ths
 
Last edited:
Dbordenb said:
I am trying to change my exhaust to a 5inch and I bought a 2nd gen downpipe with a hx40 flange that is smaller than the flange on my turbo. The flange is flat like a hx40 but measures 4 and 3/8 inch. The previous owner had a make shift down pipe set up on to fit the 2nd gen manifold an they used a holset elbow with number 3593384 on the side.

What flange adaptor do I need to fit the hx40 downpipe to the turbo?

Thanks,
David
Click to expand...

What turbi is it?
 
It's a 64/68 with a 13cm exhaust housing. If I remember correctly it is a high tech turbo
 
You have an he351 flange. You can by an hx40 to 351 adapter or you can get the hx40 style down pipe with the 351 flange from Stainless Diesel


Sent from my iPhone using Tapatalk
 
Last edited:
homewrecker said:
You have an he351 flange. You can by an hx40 to 351 adapter or you can get the hx40 style down pipe with the 351 flange from Stainless Diesel


Sent from my iPhone using Tapatalk
Click to expand...

Ok, awesome. I ordered an adapter since I already have a hx40 downpipe. Thanks for the help.
 
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