Share |
Go
New
Find
Notify
Tools
Reply
  
Blown Alcohol Exhaust Temps and A/F?
 Login/Join
 
DRR Sportsman
Picture of David Gerard
posted
As a newbie to blown alcohol, I have a couple of planning questions.

We haven't been able to get on the dyno yet with our new 548ci F-3R-112 ProCharger engine due to the backorder status on several major components [pins, rockers, etc.]

We are looking to be in the 1700-2000 HP range and run in the low 6.40's to high 6.30's for reliability and repeatability. Top Dragster is a fast bracket race and we aren't looking for "hero" numbers!

1. What are the exhaust temps I can expect on an safe alcohol motor tune?
2.About what A/F ratios?
3. Spark plug reading?

Looking for serious answers!

Thanks...

DG
 
Posts: 375 | Location: Fullerton, CA | Registered: June 08, 2008Reply With QuoteReport This Post
DRR Pro
Picture of Coloradoracer
posted Hide Post
On my buddy's funny car (Not top alky, just a blown alky car), we see exhaust temps of about 1100-1250 depending on tune. Plugs have about 1/2 of the base ring colored and timing mark is between the end of the strap and the bend. Tune is very safe and easy on parts....He's making about 20-22lbs of boost.


Mark Goulette
Owner/Driver of the Livin' The Dream Racing dragster
www.livinthedreamracing.com
"Speed kills but it's better than going slow!"
Authorized Amsoil Retailer
 
Posts: 1228 | Location: Back home in Colorado! | Registered: February 13, 2011Reply With QuoteReport This Post
DRR S/Pro
Picture of "The Bender"
posted Hide Post
Three words,

Read the plugs.


272" Spitzer
540 Chevy
The Blower Shop XR1
FTI XPM Series Converter
FTI Level 6 Powerglide
3.69@199
.916 60'

2017 Bradenton Heads Up Madness
Open Outlaw Champ

2018 PDRA T/D #5
2019 PDRA T/D #2

2020 Retired From T/D Competition....

2020 Bradenton NMCA Hemi Shootout Winner

2021 getting back into bracket racing........
 
Posts: 2969 | Location: Yes | Registered: July 08, 2009Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
quote:
Originally posted by "The Bender":
Three words,

Read the plugs.


^^^THIS^^^

Once the plugs are right, then go to the EGT/AF ratio.


1980 Camaro
Taking the Best Working Small Tire Shyt Box & making it Greater Than Before! Big Grin
3050 lbs.
Pump Gas 434
Glide/5800 Stall
4.10 Rear Gears
Car Detuned for high 9s/low10s @ 133-34 mph
 
Posts: 1443 | Location: NV. | Registered: October 20, 2006Reply With QuoteReport This Post
DRR Pro
Picture of Coloradoracer
posted Hide Post
Reitow's likely reply:

Don't read the plugs!!! Run a TSI converter, his trans, and triple chrome plate your car! Hit the cone, your et will be fastest ever in your category and you'll be able to prove it with time slips that are 20 years old and have the car number covered up so you can't actually say they are yours!!!



Sorry, couldn't resist.......


Mark Goulette
Owner/Driver of the Livin' The Dream Racing dragster
www.livinthedreamracing.com
"Speed kills but it's better than going slow!"
Authorized Amsoil Retailer
 
Posts: 1228 | Location: Back home in Colorado! | Registered: February 13, 2011Reply With QuoteReport This Post
DRR Top Comp
Picture of wideopen231
posted Hide Post
On my old combo. 526 Hemi with 14-71 and 45 lbs boost. !000 was little cold,1050 was about perfect,1100 I told diver to pull that bearing and check and 1150 plus we probably found during leakdown.

As for plugs.NGK's all cadium gone and right at firs thread was great, some cadium rich and if 2nd thread back off little.

Read plugs,bearings and ET slip then EGT's.

Also 650 on line and 750 by 60' or 1 second. Worked great for us and came from Ralph Gorr the best fuel system guy in the business,IMO


Your first mistake was thinking your opinion made a d a m n

America home of free. Brought to you by 2nd amendment.
 
Posts: 3296 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
DRR Pro
Picture of rusty
posted Hide Post
if carburated 4.4,if efi 3.6


opinions are worth what you pay for them
1.036, 6.16@ 224

 
Posts: 1216 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post



  Powered by Social Strata  
 


© DragRaceResults.com 2022