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Tech Talk => Engine Mechanical / Electrical => Topic started by: aquatic kuruption on May 22, 2015, 12:04:31 AM

Title: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 22, 2015, 12:04:31 AM: I have a 455 olds. Installed single carb tunnel ram intake with 850 cfm demon carb. Fired boat up, runs good but is making small whistle noise as if there was an intake leak. Did a vacuum leak test, no leak. Not sure if this is normal.. does anyone have any input?
Title: Re: Tunnel ram intake whistle?
Post by: Bunger on May 22, 2015, 03:50:39 AM: Quote from: aquatic kuruption on May 22, 2015, 12:04:31 AM
I have a 455 olds. Installed single carb tunnel ram intake with 850 cfm demon carb. Fired boat up, runs good but is making small whistle noise as if there was an intake leak. Did a vacuum leak test, no leak. Not sure if this is normal.. does anyone have any input?

My 455 with a dual carb t ram makes all kinds of noise. Especially around half throttle under load. Kinda sounds like a turbo whistle 😎

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Title: Re: Tunnel ram intake whistle?
Post by: aquaholic72 on May 22, 2015, 04:10:39 AM: My street car makes a weird wistle when i climb into the secondaries..always has.. i just ignore it!!! Lol

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Title: Re: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 22, 2015, 10:38:42 AM: Ok cool thanks for the responses just wasnt sure if i should check something else lol >:D
Title: Re: Tunnel ram intake whistle?
Post by: GT Jets on May 22, 2015, 03:26:24 PM: What boosters do you have in your carburetors?
Title: Re: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 24, 2015, 12:36:28 AM: Quote from: GT Jets on May 22, 2015, 03:26:24 PM
What boosters do you have in your carburetors?
im not sure guessing the one that come in carb?
Title: Re: Tunnel ram intake whistle?
Post by: Flusher on May 25, 2015, 09:42:26 AM: Do you have a spark arrestor or scoop? Does it whistle with it on or off?
Title: Re: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 25, 2015, 11:28:56 AM: Quote from: Flusher on May 25, 2015, 09:42:26 AM
Do you have a spark arrestor or scoop? Does it whistle with it on or off?
both ways it whistle
Title: Re: Tunnel ram intake whistle?
Post by: Flusher on May 25, 2015, 11:49:56 AM: At all throttle positions? Is there a mismatch between the base plate and the plenum at the mounting surface i.e. can you look through the the carb and see no part of the manifold/spacer/etc. protruding into the throttle bores? Did it always do this or did it just start? If it just started, did you make any recent changes?

Some guys turn the scoop around to face backwards so the engine doesn't get swamped. Some because intake noise can be just as loud as the exhaust.
Title: Re: Tunnel ram intake whistle?
Post by: GT Jets on May 25, 2015, 12:06:32 PM: Look into dogleg boosters.
Title: Re: Tunnel ram intake whistle?
Post by: Flusher on May 25, 2015, 01:41:22 PM: Quote from: GT Jets on May 25, 2015, 12:06:32 PM
Look into dogleg boosters.

Are they easily changed in that carb?
Title: Re: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 25, 2015, 03:00:09 PM: Quote from: GT Jets on May 25, 2015, 12:06:32 PM
Look into dogleg boosters.ok ill chevk that
Title: Re: Tunnel ram intake whistle?
Post by: aquatic kuruption on May 25, 2015, 03:02:01 PM: Quote from: Flusher on May 25, 2015, 11:49:56 AM
At all throttle positions? Is there a mismatch between the base plate and the plenum at the mounting surface i.e. can you look through the the carb and see no part of the manifold/spacer/etc. protruding into the throttle bores? Did it always do this or did it just start? If it just started, did you make any recent changes?

Some guys turn the scoop around to face backwards so the engine doesn't get swamped. Some because intake noise can be just as loud as the exhaust.
i was running a torquer intake before and i put the tunnel ram on im not running a spacer but i am running the throttle cable plate to hold my cable