Replacement Header

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Gornal
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Replacement Header

Post by Gornal »

Hi all,

I have now removed my engine and in the process of detailing and replacing all my gaskets etc. I noticed the exhaust manifold / header is rusty but still in good working order. Any advice whether I should replace it for a new coated one or should I seek to have it coated? Will there be any performance increase with a new header over the original in the 2.0l U20?
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sports imports
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Re: Replacement Header

Post by sports imports »

Most shops will not coat a used header as it is contaminated with exhaust dirt internally. if it is still solid, re use until it fails.

Ross
sports imports
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mraitch
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Re: Replacement Header

Post by mraitch »

just paint it with some high temp paint, if you have access to sand blasting - then use that first!
Peter Harrison
1970 1600 (Stroker) - TOAD SAN (Eliza)
1970 1600 (Stock) - As Yet Unnamed
Lake Balboa (SFV) , California
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Gregs672000
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Re: Replacement Header

Post by Gregs672000 »

Just make sure the damn thing isn't cracked anywhere. I was never able to get mine to weld up for the long term, and swapped to a header. The swap does require an exhaust shop as the collector etc is different than stock. Will probably morph into a brand new exhaust if you go that route!
Greg Burrows
'67 2000 #588
Tacoma, WA
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mraitch
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Re: Replacement Header

Post by mraitch »

Exactly, WHAT header?

Earlier 'stock' ones had a bracket that bolted to the alternator/motor mount bracket - rarely replaced, 'cos it's a pain/

In any case, STRONGLY suggest getting a 'flex' connex between header and exhaust pipe. Takes up the damaging tension from engine rotation.
Peter Harrison
1970 1600 (Stroker) - TOAD SAN (Eliza)
1970 1600 (Stock) - As Yet Unnamed
Lake Balboa (SFV) , California
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