Whats a safe DCR for running pump gas with no problems (including in summer heat)

Reply Subscribe

Thread Tools

Search this Thread

02-01-2005, 12:16 PM

KB99WS6

TECH Resident

Thread Starter

iTrader: (6)

Join Date: Oct 2004

Location: Long island, NY

Posts: 947

Likes: 0

Received 0 Likes on 0 Posts

Whats a safe DCR for running pump gas with no problems (including in summer heat)

Trying to plan a heads/cam combo and I didn't realize how confusing it can get!

I need to be able to run safely on 93 Octane with no ping worries...

For starters is an 8.7 DCR ok?

Reply Like

04-13-2005, 05:11 PM

CamTom12

12 Second Club

iTrader: (1)

Join Date: Apr 2004

Location: Clarksville, TN

Posts: 1,369

Likes: 0

Received 0 Likes on 0 Posts

TTT. I might be running one as high as 9.1. Is that too high for 93 Octane?

Reply Like

04-13-2005, 11:17 PM

Beast96Z

TECH Veteran

iTrader: (21)

Join Date: Apr 2003

Location: Shreveport, LA

Posts: 4,049

Likes: 0

Received 3 Likes on 2 Posts

8.7 and 9.1 should be ok on the 93 as long as it is tuned properly. The 9.1 car may have to run a bit less timing.

Reply Like

04-14-2005, 06:58 AM

DAPSUPRSLO

TECH Fanatic

iTrader: (14)

Join Date: Dec 2003

Location: Salisbury,MD

Posts: 1,729

Likes: 0

Received 0 Likes on 0 Posts

Check out David Vizards articles on the Engine Masters or Popular Hotrodding magazine. I can't remember which it is right off the top of my head. He has a chart which listes what DCR can be run on what fuel at different engine collant temperatures. Very neet stuff.