Pyro tap/drill size

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01-15-2006, 08:53 AM

#16

P.J

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Quote:

Originally Posted by G1625S

Oh, BTW, if I'm now drilling for 1/8'' NPT and then adapting up, what size drill do I need for THAT?

Supposed to be an 'R". I used a 21/64" Worked out just fine for me.

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01-15-2006, 08:56 AM

#17

P.J

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Less than $4.00 at Sears.

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01-15-2006, 09:31 AM

#18

wannadiesel

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The chart I used says 11/32" for 1/8" NPT. It worked fine on mine.

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01-15-2006, 09:33 AM

#19

G1625S

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Cool, thanks fellas! How about adapters? Can I get them from the hardware section at Lowes? Will brass take the heat, or do I need cast iron fittings? Never really messed with anything like this, so I'm in the dark...

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01-15-2006, 09:35 AM

#20

wannadiesel

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Iron. Any decent hardware store will have what you need. The reducer is bell-shaped, and you want the shortest 1/8" nipple they have. It's called a close nipple, the threads meet in the middle.

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01-15-2006, 10:12 AM

#21

G1625S

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Thanks again

I'm nervous to watch the pre-turbo pyro for the first time--it'll probably make me all

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01-15-2006, 01:12 PM

#22

DODGE 92

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11/32 drill sizes is supplied with tap kit usualy

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01-15-2006, 01:14 PM

#23

DODGE 92

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11/32 is drill size you need

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01-15-2006, 03:54 PM

#24

Underpsi

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Quote:

Originally Posted by G1625S

Oh yeah

I bought the early 1st gen DonM EDM's from Bill

I don't think they're hugely bigger than my stockers (waiting to hear back from Don on the details) but from all I've read about EDM's, it sounds like I'll be able to use more of the fuel they deliver due to a cleaner pattern/burn. I'll be the guinea pig for this one and let ya'll know in about a week

Are they suppose to be bigger then pod's or just a cleaner burn? Can't wait for the results!

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01-15-2006, 05:32 PM

#25

G1625S

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Quote:

Originally Posted by Underpsi

Are they suppose to be bigger then pod's or just a cleaner burn? Can't wait for the results!

Rumor has it they don't flow as much as POD's--still waiting to hear from DonM on the specifics. As it is, I've got way more fuel than I can burn anyway, so I'm not terribly concerned about max fuel delivery. A cleaner burn with less smoke/egt would have me all

As I posted earlier, I'm the guniea pig on this one, so I'll keep everyone updated. I've had my truck for a little over a year and 30k+ miles now, so I've got a good idea of what she'll do and what she won't. Heat is my biggest concern, with smoke a close second. Since this is my only driver I can't focus on peak dyno #'s in favor of long term reliability. This summer I plan to skip the hybrid and head for the HTB2 with a custom crossover pipe and h2o/meth. I just can't hack up my old-school grill for an intercooler...yet. I'm such a purist