Is it possible that running a stock turbo all out on a stroker engine with good heads could cause knock? Alky make it worse from being too rich? This setup will only make 15psi of boost but I'm wondering if the stock snail is too far past an efficiency range at this point to work and overheating the intake charge or something. Been working on this car for a while, but now I just can't make it work right for a guy. Thought alky would help, but it acts the same. Checking the basics and starting from scratch in the spring, but just curious on thoughts. Bigger turbo is not in the budget right now.
low boost knock question
- Thread starter we4Mateo
- Start date
Welcome!
By registering with us, you'll be able to discuss, share and private message with other members of our community.
TurboTdr3.8
Well-Known Member
- Joined
- Jan 15, 2013
- Messages
- 1,230
What are the WB readings when this is happening with alky turned off and then turned on ?
NB only and they are solid but I never trust them when kr is happening. Could be fake too but we can't find it.
TurboTdr3.8
Well-Known Member
- Joined
- Jan 15, 2013
- Messages
- 1,230
Maybe he will let up put a WB on in the spring when you start from scratch
TurboTdr3.8
Well-Known Member
- Joined
- Jan 15, 2013
- Messages
- 1,230
I forgot to say my car had a kr at low boost and it was the valve springs
- Joined
- May 28, 2001
- Messages
- 2,562
I ran the stock turbo on the motor in my sig to get it smogged once. You dont need alky for it at all. The car would just nose over because the turbo was out of air by 15 psi on pump gas.
I don't think you can overheat using the alky but you can blow out the spark and or push a gasket out if you throw enough fuel at it. Ask me how I know.......
I don't think you can overheat using the alky but you can blow out the spark and or push a gasket out if you throw enough fuel at it. Ask me how I know.......
I ran the stock turbo on the motor in my sig to get it smogged once. You dont need alky for it at all. The car would just nose over because the turbo was out of air by 15 psi on pump gas.
I don't think you can overheat using the alky but you can blow out the spark and or push a gasket out if you throw enough fuel at it. Ask me how I know.......
I was thinking that. Thank you.
Posted from the TurboBuick.Com mobile app
Tom87GNX
Active Member
- Joined
- Nov 29, 2012
- Messages
- 790
You could be over the efficiency threshold for the turbo, yes you may still be making boost but at a certain point you will be actually heating the air more and that could cause knock. Also too rich of a mixture can cause knock as well, any Scanmaster or powerlogger readings?
Tom87GNX
Active Member
- Joined
- Nov 29, 2012
- Messages
- 790
I'm by far no expert, I'm merely just throwing out suggestions. I would probably seek advice from Bison on this matter as he is the turbo guy 
