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Old 10-30-2007   #1
Jagdpanzer
 
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Default 63 mm Throttle Body

I see a lot of Z owners mention 63mm throttle body as one of their mods.
Who makes it and about how much $?
How does it differ from the stock throttle body and when does this mode make since?
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Old 10-30-2007   #2
Jeffvette
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Default Re: 63 mm Throttle Body

The two big blades inside the TB are a 58mm size. The bore is enlarged to 63m and new butterflies are cut out and mounted up.

Cost is around 300.

The gain on a P&P plenum and injector housing set is minimal.
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Old 10-30-2007   #3
Ccmano
 
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Default Re: 63 mm Throttle Body

Quote:
Originally Posted by Jeffvette
The gain on a P&P plenum and injector housing set is minimal.
That's interesting Jeff, are you saying the 63mm TB isn't really worthwhile unless there are major air flow enhancements to the heads?

Hans
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Old 10-30-2007   #4
blackjack
 
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Default Re: 63 mm Throttle Body

thats an interesting topic...i also heard that 58mm is big enough to feed a 350 cu.in,no matter what kind of mods you have...any real world results?...dyno comparo?
bj
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Old 10-30-2007   #5
Jeffvette
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Default Re: 63 mm Throttle Body

I would rather see somebody put the 300 bucks towards headers than to modify the TB.
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Old 10-30-2007   #6
GOLDCYLON
 
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Default Re: 63 mm Throttle Body

Quote:
Originally Posted by Jeffvette
I would rather see somebody put the 300 bucks towards headers than to modify the TB.

This is what Jeff told me 6 months unless you punch the block you are throwing your money away on this TB mod.
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