Engine Tech
> Forced Induction
User Name

Forced Induction This section for the traditional Pontiac V8

sponser links

Thread Tools
Old 05-28-15, 12:24PM   #1
conceptfab's Avatar
Join Date: Aug 2008
Location: sierra vista, az
Posts: 168
Default why is my fuel pump so loud and turbo so quiet??

I have an aeromotive "street/strip" fuel pump, an aeromotive boost referenced bypass regulator and a tv7101 on 8 lbs on a low compression 389. Maybe I need to up the boost to hear the turbo? I mean I can certainly tell when the boost hits but its just so stinking quiet except for that dang fuel pump!
Micah Prudhomme
www.confabaz.com <<< build pics
http://www.youtube.com/user/ConceptFabrication <<<< youtube channel
conceptfab is offline   Reply With Quote
Old 05-29-15, 01:01PM   #2
Procharger Posse
bad69bird's Avatar
Join Date: Aug 2002
Location: Delaware
Posts: 1,327

Try running rubber washers or bushings under the pump. It will help some but will not cure it totally. Also are you running a return line back to the cell? If not and you are "dead heading" the pump, the pump is working hard; therefore, it makes more noise.
Special thanks to:

Nitrous is like a hot girl with a STD...you want to hit, but you're afraid of the consequences.

Fastest Stock Suspension & Blow-thru Pontiac in the country
8.44 @ 166.97 (@3465#s)
1.38 60', 5.51@ 132.83-1/8th mile-DA 3800'
bad69bird is offline   Reply With Quote
Old 06-25-15, 02:24PM   #3
turbo69BIRD's Avatar
Join Date: Feb 2005
Location: simsbury CT
Posts: 5,717

Yup cut a piece of rubber and place it between the pump and sheet metal that'll quiet it.

A lot of times the turbos are very quiet especially on gas engines compared to diesels. Idk why but that does happen my car you really only hear the BOV not the turbo my dodge diesel I hear the turbo much more.
turbo69BIRD is offline   Reply With Quote
Old 06-25-15, 02:28PM   #4
turbo69BIRD's Avatar
Join Date: Feb 2005
Location: simsbury CT
Posts: 5,717

My king sumo pump is pretty loud, I can tell when I'm getting low on fuel in the cell because the pump starts cavitating making it sound different. I think it starts pulling in frothed fuel from the return line dumping back in. one of these days I'll go to a bigger cell with a gauge but until then that fuel pump sound is my best Freind. ��
turbo69BIRD is offline   Reply With Quote
Old 06-25-15, 02:29PM   #5
Registered User
JSPONT's Avatar
Join Date: Feb 2014
Posts: 1,459

The "turbo" sound will get louder with more boost. Run it with no hood you will here it more!
JSPONT is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
I put up a new gallery for my turbo project! flynbrian Forced Induction 2 11-09-07 10:48PM

All times are GMT -3. The time now is 03:17PM.

Featured Ads
Ken's Speed & Machine
Mayhem Turbocharging

Carter Cryogenics.  What can we freeze for you?

Pacific Performance Racing

Central Virginia Machine Service.  Home of the Injun Engine!

All Pontiac Engine Kits

Larry's Auto Machine.  Full serivce auto, marine machine shop, domestic and foreign.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
2001 - 2007 PontiacZone.com
Page generated in 0.07171 seconds with 23 queries