Power Adders Getting a Supercharger or Turbocharger? Thinking about using Nitrous? All forced induction and N2O topics discussed here.

Pinning and bogging under boost.

Thread Tools
 
Search this Thread
 
Old Jul 26, 2023 | 07:42 PM
  #1  
dana0330's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Nov 2019
Posts: 80
Likes: 6
Pinning and bogging under boost.

Hi I have a 86 Camaro with a 2.8l 5 speed. I put on a small Rotorex C30 supercharger, it has a bog and it pings under boost, it goes up to about 10 psi at higher rpms. I have a water intercooler, 17lbs injectors from Southbay, second fuel pump, 8:1 FMU. it is worse in first and second gear. I turned the timing down but that did not help. I was thinking of adding a MSD with boost retard. The engine is all stock with headers, and a JET chip. Any help would be appreciated.
Reply
Old Jul 31, 2023 | 10:52 PM
  #2  
thatsupnow's Avatar
Supreme Member
15 Year Member
Liked
 
Joined: Apr 2010
Posts: 1,198
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Pinning and bogging under boost.

Originally Posted by dana0330
Hi I have a 86 Camaro with a 2.8l 5 speed. I put on a small Rotorex C30 supercharger, it has a bog and it pings under boost, it goes up to about 10 psi at higher rpms. I have a water intercooler, 17lbs injectors from Southbay, second fuel pump, 8:1 FMU. it is worse in first and second gear. I turned the timing down but that did not help. I was thinking of adding a MSD with boost retard. The engine is all stock with headers, and a JET chip. Any help would be appreciated.
What fuel are you using?? Is this combo tuned for everything?? Have you data logged anything??
Reply
Old Aug 1, 2023 | 09:24 AM
  #3  
dana0330's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Nov 2019
Posts: 80
Likes: 6
Re: Pinning and bogging under boost.

I am running premium gas. I am running a stock computer, no data logger.
Reply
Old Aug 1, 2023 | 09:39 AM
  #4  
thatsupnow's Avatar
Supreme Member
15 Year Member
Liked
 
Joined: Apr 2010
Posts: 1,198
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Pinning and bogging under boost.

Originally Posted by dana0330
I am running premium gas. I am running a stock computer, no data logger.
Premium gas as in 93 octane?? Either way I'd suggest you take it to the rollers and get it sorted out that way
Reply
Old Aug 4, 2023 | 08:37 AM
  #5  
Street Lethal's Avatar
Supreme Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Jul 2003
Posts: 10,521
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: Pinning and bogging under boost.

Originally Posted by dana0330
Any help would be appreciated.
You need a wideband reading, a solid datalog, and better timing control...

Otherwise you're shooting your arrows during the night at a target you cannot even see...

dynamicefi.com

- Rob
Reply
Old Aug 4, 2023 | 09:39 AM
  #6  
dana0330's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Nov 2019
Posts: 80
Likes: 6
Re: Pinning and bogging under boost.

I got the pinning sorted out with a timing adjustment, But it still bucks under boost. I closed up the gap on the plugs to .032, and replaced the cap and rotor. The wires are fairly new.
Reply
Old Aug 19, 2023 | 05:47 PM
  #7  
dana0330's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Nov 2019
Posts: 80
Likes: 6
Re: Pinning and bogging under boost.

I got the bogging sorted out. I got a set of 20lbs injectors from South Bay Fuel injectors that seemed to do the trick. No more bucking and it has way more power.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dana0330
V6
0
Feb 20, 2022 01:03 PM
BigWhiteGTP
Power Adders
18
Aug 23, 2006 09:46 PM
GreenChevelleSS
Power Adders
9
Jun 2, 2005 01:16 AM
antoine
Power Adders
11
Nov 30, 2003 03:56 PM
StocRoc
Power Adders
4
Dec 30, 2001 11:53 PM




All times are GMT -5. The time now is 01:19 PM.