What is it about the growl from a pair of IDAs?

[javabug]

 

[Sarge]

    .....ROFL!

[Black Sheep]

Could you please warn me when your going to do something like that . Now how do you go about explaining that one to my little girl 

[Martin Greaves]

Could you please warn me when your going to do something like that . Now how do you go about explaining that one to my little girl 

Lynne not that little Glenn.

[58vw]

i dated a girl that just went crazy at the sound of them carbs howlin.....got lucky alot.......












damn....i miss her

[stealth67vw]

To get the most auditory effect out of your IDAs build a small engine with a big friggin cam and floor it way under the power band of the cam. It'll make the hair stand up on the back of your neck until it gets "on" the cam.

[fastfred]

i still have some sweatshirts and tshirts for sale to show off your preference for italy's loudest carbs from bologna... contact me at fastfred@autobahn.be

[Jim Ratto]

hi guys,
i ll be using efi,
but want a that bark as well
what is it that the IDAs make louder ?
what do you think?

honestly, and I know this sounds weird, but I think the venturi makes all the difference. Seem like 48's with "smallish" vents really REALLY bark, almost like a pierceing snap. I think the venturi makes the carb kind of like a horn or a reed instrument. the air passing through vent makes a harmonic vibration we can hear. I don't know, I'm not a scientist. Just a guess.

[lawrence]

To get the most auditory effect out of your IDAs build a small engine with a big friggin cam and floor it way under the power band of the cam. It'll make the hair stand up on the back of your neck until it gets "on" the cam.

You are right, John. 1914, 86b and 48s

[Tony M]

hey jim it think you hit a good one here - and you were woried

[j-f]

This morning, a friend call me because he will start his race car. 6 longs years of sleeping...
Engine is a type 4 2.4l. 48IDA, one off exhaust, 214hp on the dyno. Built to run endurace race.
Men, the sound of this engine reving in the garage  . how could you not fall in love off this. 15min off happiness.
I hope next time he will repair the gearbox and go for a ride 

[Zach Gomulka]

Dells sound like there is a bird under the decklid at idle. Chirp,chirp.

No kidding! IDFs sound the same way.

IDAs and Kadrons sound the meanest!

[Ivan]

I remember back in 1999 I was part of the "Return to the Fatherland" tour. The cars were off loaded in England and we had an appointment the next day at Stanford Hall (?).
Of course there were several Brits welcoming us. Ivan from VolksWorld fame was there with his white 63 Ragtop. A buddy of his grabbed the keys and I asked for a ride. We took off down the road and he let into the gas pedal. At first I thought someone was shooting a machine gun at us!!! But it was the sound of the two 48!!! Damn!!! I have to get me a pair of those! I was hooked, period
Erich

I remember that mission Erich!
You had a good blast in my old '63 Ragtop, didn't you?! I can remember you being a changed man when you came back from that e-ticket ride!

That car is now owned by Matt Sanchez, but I still have that motor - it's now in my '67.  Since then it has had a bit of reworking done to it, but it's still basically the same Gene Berg 78mm forged crank, Carrillo rods,  FK10 bottom end. The heads are VW040 by Mary at Pauter Machine. The Berg rockers have gone and I've replaced the 48IDAs that were on it with NOS Italian stallions.


I can also remember the beer flowed freely that night and this in turn lead to some of us spiraling off into oblivion. I also won't ever forget the next morning when driving to Stanford Hall, in the usual spirited manner, and nearly loosing the '63 at speed half way through a fast right hand bend - I think the fact the passenger door window was my windshield at one point should give you an idea of how close we were to becoming part of the scenery...
I don't think I've ever come as close to thinking it was all over in a VW. After coming out of it in one piece - I turned and looked at my friend Ben Lawrence who was a whiter shade of pale in the passenger seat, held my nose to help me do my best Raymond Babbitt impersonation and said "Of course, I'm an excellent driver" - We laughed for about five minutes!

[Jason Foster]

honestly, and I know this sounds weird, but I think the venturi makes all the difference. Seem like 48's with "smallish" vents really REALLY bark, almost like a pierceing snap. I think the venturi makes the carb kind of like a horn or a reed instrument. the air passing through vent makes a harmonic vibration we can hear. I don't know, I'm not a scientist. Just a guess.
[/quote]

   I think you might be on to something there I run 37 vents. in mine and I love the "bark"  great thread.   
                                       
                                                       hmmm maybe this is what Cal Look means.....

[Diederick/DVK]

37mm vents in such a large engine? 

[Jason Foster]

yup,   180 mains  50 idles   F11 emulsions dont remember airs.  FK10  it rarely sees more than 6500rpm 

   never have tuned it for the track. Since my trans is geared so tall.

[Dave Galassi]

I find that the more overlap the cam has, the more compression (of course), the louder the IDAs. Also, EFI dual throttle bodies are too quiet for my ears.

honestly, and I know this sounds weird, but I think the venturi makes all the difference. Seem like 48's with "smallish" vents really REALLY bark, almost like a pierceing snap. I think the venturi makes the carb kind of like a horn or a reed instrument. the air passing through vent makes a harmonic vibration we can hear. I don't know, I'm not a scientist. Just a guess.
[/quote]

I wish my EFI was quiet Dean.  Maybe it's that big engine bay..........

I don't think that sounds weird at all, Uncle Jim.  Having spent some time in the back of Allen's vert two weeks ago and with the time I've spent driving the truck, both 2110's with EFI, the sound is the same, but different from a 48 motor in that I didn't hear what I thought was the air going past the venturis.  The throatiness is there, though, to me.

[Jon]

I don't think that sounds weird at all, Uncle Jim.  Having spent some time in the back of Allen's vert two weeks ago and with the time I've spent driving the truck, both 2110's with EFI, the sound is the same, but different from a 48 motor in that I didn't hear what I thought was the air going past the venturis.  The throatiness is there, though, to me.

The throatiness comes from the Size of the engine and the separate runners, so it should be the same for all similar sice carbs. But the higher tones, like the "hiss" sounds I think comes from the layout on the rest of the parts in the IDA, that would not be the same in an efi motor.
And those noises is part of the "crazy" feel you get when you are flooring a IDA engine.