View Poll Results: What are your biggest problems with a high compression engine with todays crappy gas?
Hot restart problems.
2
40.00%
Engine diesels (runs on after ignition cut off).
0
0%
Pinging on light acceleration.
2
40.00%
WOT rattle (pinging on heavy acceleration).
1
20.00%
Constant detonation at all speeds.
0
0%
Voters: 5. You may not vote on this poll
Poll: High compression woes
Thread Starter
Supreme Member
Joined: Jul 2005
Posts: 1,675
Likes: 3
From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
High compression woes
First, let me be clear, I have no problem with my engine and it's high compression. My question is: which problems are the biggest with your high compression engine given todays crappy gasoline quality?
1. Hot restart problems.
2. Engine diesels (runs on after ignition cut off).
3. Pinging on light acceleration.
4. WOT rattle (pinging on heavy acceleration).
5. Constant detonation at all speeds.
1. Hot restart problems.
2. Engine diesels (runs on after ignition cut off).
3. Pinging on light acceleration.
4. WOT rattle (pinging on heavy acceleration).
5. Constant detonation at all speeds.
Last edited by Supervisor42; Jul 9, 2006 at 09:56 PM.
Supreme Member
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Joined: Jan 2003
Posts: 1,083
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From: Northwestern Pennsylvania
Car: 1985 Pontiac Trans Am
Engine: 355 with stuffs.
Transmission: 700R4
Axle/Gears: 4.10 Posi
While I wouldn't consider 10.0:1 (mine) a HIGH compression ratio, it still gives me grief once in a while when it's good and hot. What CR do you have?
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
I haven't really had any of the problems listed, and I might have what some would considered 'high compression'. I have a 350 with just under 11:1 compression and iron heads.
Mine might be a freak, but I've never had any of the problems listed above. The only real headaches I've had with it are:
A) Keeping the tune absolutely spot-on to avoid your listed problems
B) Paying for premium
Mine might be a freak, but I've never had any of the problems listed above. The only real headaches I've had with it are:
A) Keeping the tune absolutely spot-on to avoid your listed problems
B) Paying for premium
Supreme Member
iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
My 10:1 has a crappy tune still, so I can't be totally fair in my accusations... Hot starting isn't great, but i'm using the stock 1982 305 starter, so it's not really fair.... I said WOT rattle, as it does that when I punch the gas at low RPM, load, high gear.... Maybe I should just not do that...
Moderator
Joined: Feb 2000
Posts: 7,015
Likes: 2
From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Any engine with proper tuning shouldnt exhibit any of those issues.
U will need a real mini type or high torque equivelant starter however.
Pushing much more than 10-1 on the street with pump gas on Gen 1 chevies is a careful proposition when it comes to tune and fuel quality
later
Jeremy
U will need a real mini type or high torque equivelant starter however.
Pushing much more than 10-1 on the street with pump gas on Gen 1 chevies is a careful proposition when it comes to tune and fuel quality
later
Jeremy
Thread Starter
Supreme Member
Joined: Jul 2005
Posts: 1,675
Likes: 3
From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
Originally Posted by Quick_Trans_Am
While I wouldn't consider 10.0:1 (mine) a HIGH compression ratio, it still gives me grief once in a while when it's good and hot. What CR do you have?
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