Knock or noise?

mrlaw · 08-02-2007, 10:04 AM

Today I build myself a *knock headphone*.The design is so simple ,it took me 30 minutes total

here is what you need:

ear defenders
1 foot of copper pipe 3/8"
about 10 feet of hose (fuel hose will do )
a 3/8 " T piece
2 3/8" -1/8 npt barb fittings

Drill the defenders in the lower spot and tap the holes to 1/8 ntp
fit the barb and slide the hose on them, the connect both hoses to the T-piece.

Flatten the copper pipe and drill a hole in it then bolt it to the head (or block)
Slip the hose over the pipe and over the T piece aswell

done:

Does it work? Yes! I can hear knock when my PFC Datalogit shows '48' knockcount

You can clearly hear any noise coming out the engine
You will clearly hear the motor Knocking .The sound is very distinctive from other noises!
So before you go out and buy the Turbos XS tuner pro or the HK$ knock amp try this .It cost me about $40

Lawrence

Bak@EMSPowered · 08-02-2007, 10:15 AM

where did you get the head piece?

mrlaw · 08-02-2007, 10:18 AM

any hardware store near you should have it .They are just regular ear muffs

Lawrence

Bak@EMSPowered · 08-02-2007, 10:20 AM

Oh nice. I'll have to make one of these soon. Good writeup!

lsgheero · 08-02-2007, 08:37 PM

ive always just used a good flathead screwdriver, none the less nice writeup

Enthalpy · 08-24-2007, 06:29 PM

I have used something like this for awhile. I no longer use it. I use something called ChassisEar. It's FANTASTIC! Trace knock is much more clear now. It's a mechanic's tool that is used to diagnose suspension clunks and such, but it works so well for knock detection!

08-02-2007, 10:04 AM	#1 (permalink)
mrlaw No Skills Join Date: Feb 2005 Posts: 18 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Knock or noise? Today I build myself a knock headphone.The design is so simple ,it took me 30 minutes total here is what you need: ear defenders 1 foot of copper pipe 3/8" about 10 feet of hose (fuel hose will do ) a 3/8 " T piece 2 3/8" -1/8 npt barb fittings Drill the defenders in the lower spot and tap the holes to 1/8 ntp fit the barb and slide the hose on them, the connect both hoses to the T-piece. Flatten the copper pipe and drill a hole in it then bolt it to the head (or block) Slip the hose over the pipe and over the T piece aswell done: Does it work? Yes! I can hear knock when my PFC Datalogit shows '48' knockcount You can clearly hear any noise coming out the engine You will clearly hear the motor Knocking .The sound is very distinctive from other noises! So before you go out and buy the Turbos XS tuner pro or the HK$ knock amp try this .It cost me about $40 Lawrence

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08-02-2007, 10:15 AM	#2 (permalink)
Bak@EMSPowered Banned Seller Join Date: Oct 2005 Location: Austin, TX Posts: 5,925 Thanks: 30 Thanked 193 Times in 165 Posts My Google Map iTrader Rating: (49/93% )	where did you get the head piece?

08-02-2007, 10:18 AM	#3 (permalink)
mrlaw No Skills Join Date: Feb 2005 Posts: 18 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	any hardware store near you should have it .They are just regular ear muffs Lawrence

08-02-2007, 10:20 AM	#4 (permalink)
Bak@EMSPowered Banned Seller Join Date: Oct 2005 Location: Austin, TX Posts: 5,925 Thanks: 30 Thanked 193 Times in 165 Posts My Google Map iTrader Rating: (49/93% )	Oh nice. I'll have to make one of these soon. Good writeup!

08-02-2007, 08:37 PM	#5 (permalink)
lsgheero RAR! Join Date: Feb 2007 Location: Arizona Posts: 747 Thanks: 9 Thanked 31 Times in 31 Posts My Google Map iTrader Rating: (1/100% )	ive always just used a good flathead screwdriver, none the less nice writeup

08-24-2007, 06:29 PM	#6 (permalink)
Enthalpy EMS Harmonizer Join Date: Feb 2006 Location: Denver, CO Posts: 1,226 Thanks: 8 Thanked 55 Times in 43 Posts My Google Map iTrader Rating: (2/100% )	I have used something like this for awhile. I no longer use it. I use something called ChassisEar. It's FANTASTIC! Trace knock is much more clear now. It's a mechanic's tool that is used to diagnose suspension clunks and such, but it works so well for knock detection!