Turbo Whistle

[sparks57]

When I had the stock H1C on, I could never get the thing to whine when I up-shifted.



But now that I have this BOMBed turbo on, and pump tweeks, it whines loud when I up-shift.



Is it because of more boost, or is it because of the BOMB changes on the newer turbo?



Basically, will my old turbo make the same noise? Was it never whining because it just never made much boost?

 

[JLEONARD]

My old H1C would whine fairly good, and I could hear it pretty good thru the stock exhaust.

I can't hear (maybe once in a while) the new H1C and can barely hear it thru the 4 inch exhaust...

And I bumped up the fuel pretty good after the new one got installed.

Jay

 

[paccool]

I could never hear the stock HC1. The wife said she could hear it once in a while. When I put on the PDR HX35, I took the silencer ring out. Talk about loud! I had also replaced the stock air inlet system with one like the ASC and Old Smokey's mount but instead of the BHAF, I put on an AFE filter when I was up at Piers.



I have now reinstalled the ring and I can still hear the turbo just fine.

 

[Greenleaf]

Ahhhhh, Ummmm??????????????Silencer ring you say??? Removed it? Reinstalled it?



Well I give up. Never heard of such a part.



Scott

 

[JLEONARD]

Never heard of such a part.

Scott... . that's because it's SILENT!!!!

Shhhhhh... ...

That's a secret second gen part also available on upgrades for our engines.

That's one thing that makes our trucks so simple... . less parts to remove!!!!!!!!!

Jay

 

[quikshft]

I love that turbo whine but I can rarely hear mine. I also understand that the 1st gen trucks came with a turbo which did not have a silencer ring. I figured that out when I tried to remove it.

I'm probably going to display my ignorance here but I admit there some things I just haven't taken (or had) the time to learn yet. The stock 'turbo housing' on the early trucks is too big I understand, a smaller housing will spool up quicker and make the truck a bit more driveable. What do you replace when you change out the 'turbo housing'. I don't believe it's the entire turbo, I'm not sure what the 'turbo housing' really is. And, when or if I do this will I end up with a silencer ring I can remove????

 

[Jerry R]

you want turbo whistle without spending the bucks? Try herehttp://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33633&item=2447600916

 

[bflood]

Originally posted by quikshft

. . . What do you replace when you change out the 'turbo housing'. I don't believe it's the entire turbo, I'm not sure what the 'turbo housing' really is. And, when or if I do this will I end up with a silencer ring I can remove????

The turbo housing bolts onto the exhaust manifold. It is sandwiched between the manifold and turbo compressor. You can buy 12, 14, 16, & 18cm2 housings and the debate continues what size is the best. Depends somewhat on what you do with your truck. The lower the cm2 area the earlier the boost pressure spools up. the smaller ones, like the 12 and some 14's also have a wastegate. Generally, the 12 is better for rabbit starts off the line and the 16 is better for towing.



To change the housing, put the housing/compressor on the bench. Separateing the two is the trickyest part due to a tight fit (be careful). Other than this the changeover isn't bad, 2-3 hours for a novice taking his/her time. The silencer ring (if you have one) is in the compressor section. For more detail and info try searching the forum and you'll have a lot to read.



BTW, get boost & pyro gauges BEFORE changing the housing! Get yourself some performance benchmarks first. When you go to a smaller housing you need to be attentive to Exhaust Gas Temperatures (EGT's), especially when you also start tweeking the pump!!!

 

[quikshft]

Originally posted by Jerry R

you want turbo whistle without spending the bucks? Try herehttp://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33633&item=2447600916

LOL The add read; "Accept no imitations"!!!



Bflood thanks for the info, I'm learning.....

 

[jbolt]

Originally posted by Jerry R

you want turbo whistle without spending the bucks? Try herehttp://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33633&item=2447600916

ROFLMAO!



I wonder how many of those you could stuff in a 4" exhaust. Woo Hoo! :-laf

 

[tugboatphil]

Quikshft,



I just switched to a 16cm housing this past summer. I can't remember the title, but I posted while in progress and got lots of great help. If you run into any problems, give a shout.



When others tell you to hit the old housing hard, that's just what they mean. Now I soaked mine with Rust Blaster and tapped it into the crack. Let it soak overnight and it only took about 8 or 9 well placed hits to get it off.



On your sig line, the 70 Super Bee was THE most awesome muscle car there was, IMHO.



Phil

 

[dpuckett]

turbowhistle

I can hear my turbo whistle at idle with stock exhaust. I'm getting the parts for a 4" system this week, cutting and welding next wknd.

 

[paccool]

Guys,

The stock first gen turbos do NOT have a silencer ring. The HX35 is a second gen turbo that will work on our trucks and the PDR HX35 has been modified to spool up even faster. I was able to use the 16 housing off the old turbo on the new HX35. This thing spools way faster than the stock HC1.



I didn't put it on just to get more "whistle", it was for faster spoolup so more fuel could be put to the engine with out massive amounts of smoke.



Stan

 

[tugboatphil]

But you have to admit... . the whistle is a great side effect!!



Saw a 3rd Gen the other day and thought it was a gasser until I saw the badge. Way too quiet for me.

 

[paccool]

Phil,

You are right about the side effect! But, without the ring it was really loud. I think it is due to the inlet system I have on the truck.

 

[BushWakr - RIP]

">... the 70 Super Bee was THE most awesome muscle car there was, IMHO..... "



Oh nuts and berries to that... . . . the Hemi-Cuda was the most bad butt muscle car... just like it was when it dominated racing leading to it's introduction to the street car production line... .



Hemi's ROCK... .







Pastor Bob... .



ps: now git yerself to church and confess your sins... ...

 

[tugboatphil]

Perhaps I should have been more descriptive. It had the meanest look. ANYTHING with the 426 was the baddest kid on the block. Oh for the days of unlimited factory horsepower.



And don't get me started about how NASCAR needs to take the "SC" out of their title.

 

[1stgen4evr]

At 61, I have been sitting behind turbos for more hours than I care to remember. IH doziers, Mack trucks and Dodge CTDs. I can hear the whistle all the time except it isn't coming from the turbo any more. It lulls me to sleep and is still with me in the morning. You might want to consider sound attenuation on your truck.



On the other hand you can hear it real good if you run a small flexible tube from the area of the turbo to near your ear. This also works for hunting extraneous noise from any part of the truck.



Being a good listener is an important part of keeping your truck in good order. If you know what your transmission is telling you (through the stick noise), you will know when to work on it. Turn a big drink cup upside down on the knob and drive it through the gears. Listen carefully. Compare it to one that is known to be in good condition. You can tell if you have a drive line problem developing as well as internal transmission problems. It is hard to tell the difference between transmission and differential problems. Bigger trucks don't require the cup. They speak louder and don't require amplification.



1stgen4evr

James

 

[tugboatphil]

Thanks for the tip, James!



After so much time on ships and boats, I have a hard time getting to sleep if it's too quiet. The one thing that used to wake up an entire ship's crew was the sudden appearance of silence. It usually meant a switchboard fire or some major machinery casualty that required shutting everything down.



On another topic, if I emailed you a picture of a 50 year old Cat dozer, do you think you could identify it for me? My stapdad got it and he's not sure what it is. Most of the repairs he's had to fabricate anyway.



Phil

 

[paccool]

James,

I know what you mean about hearing it all the time. That damned ringing just stays right there. That is why I couldn't hear the old HC1, was about the same pitch!



I keep telling my son to make sure he wears hearing protection or he will end up the same way.



Stan