Harv's Jack Myers thread

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GreyEJ
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Re: Harv's Jack Myers thread

Post by GreyEJ »

Found this out recently. There are 3 types of Jack Myers headers, notice one set says only "Jack Myers" the other two have differnt size "Sydney"

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Joe_FBHolden
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Re: Harv's Jack Myers thread

Post by Joe_FBHolden »

Very interesting, thanks for the information. I do believe that "Jack" would of had many of them stamped over different periods of time. I wonder how many survived??? Just had my second pair arrive today. Time to compare the pair....
parisian62
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Re: Harv's Jack Myers thread

Post by parisian62 »

2 sets of Jack Myer headers Andrew??? That's just greedy! :P :D
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Joe_FBHolden
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Re: Harv's Jack Myers thread

Post by Joe_FBHolden »

Always good to have a spare. This coming from the guy with an FB sedan and a EK wagon....now who's greedy
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Re: Harv's Jack Myers thread

Post by GreyEJ »

Joe_FBHolden wrote:Very interesting, thanks for the information. I do believe that "Jack" would of had many of them stamped over different periods of time. I wonder how many survived??? Just had my second pair arrive today. Time to compare the pair.... Image
I don't recon there stamped but part of the mold? Over time the molds were replaced as his business became established? Who knows. It's cool though.

Until recently I had only ever seen/heard of the cam gear that Harv mentioned but my friend just got one yesterday for an old guy as a gift. Pretty cool.
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Re: Harv's Jack Myers thread

Post by Joe_FBHolden »

Sorry I'll rephrase my previous post, i meant part of the molding and casting section
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Re: Harv's Jack Myers thread

Post by parisian62 »

This is coming from the guy with an FB sedan and a EK wagon....now who's greedy
:lol: :lol: :lol:
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Re: Harv's Jack Myers thread

Post by Joe_FBHolden »

Just wondering if anyone has pics of Jack Myers headers installed with the 'Y' join exhaust on a car. Or even better, a pic of the old Lukey exhaust system from early days. I have been advised to run pipes to atleast under the passenger side before joining into the single 2" exhaust pipe for better performance. Cheers

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Harv
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Re: Harv's Jack Myers thread

Post by Harv »

Joe_FBHolden wrote:Just wondering if anyone has pics of Jack Myers headers installed with the 'Y' join exhaust on a car. Or even better, a pic of the old Lukey exhaust system from early days. I have been advised to run pipes to atleast under the passenger side before joining into the single 2" exhaust pipe for better performance.
My post from June 6th shows the Myers Y-pipe join. Mine "Y" is in the engine bay, not under the passenger side. The Myers headers tend to lend themselves to the two pipes being run "one on top of the other". This is a big height to get under the floor without losing ground clearance. The exhaust shop would need to work a bit harder to get them to run "side by side" before passing the firewall.

The longer the system runs as dual pipe, the less pressure drop. Having said that, the difference between the "Y" in the engine bay and the "Y" under the passenger's feet would be negligible.

Cheers,
Harv
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Re: Harv's Jack Myers thread

Post by Joe_FBHolden »

Thanks Harv, much appreciated.

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mph
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Re: Harv's Jack Myers thread

Post by mph »

These are my old mans grey jack headers
Not sure which series of jacks headers though
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