Need help finding my (grimlin) - Page 2

Mark Schmidt · 05-20-2009, 04:59 PM

I'm assuming you run on the stop, that said I would suggest 3 things

1. Lose the power valve and re-jet accordingly
2. Larger squirters
3. Roll into the throttle (if for no other reason..consistency)

Just my .02 cen ts...good luck!

buzzinhalfdozen · 05-21-2009, 08:52 AM

Probably the biggest problem I've seen on alot of cars is guys seem to run the idle very lean, the manifold MUST be full of fuel vapors or you will certainly have a stumble on quick throttle application. I'm not sure you can put a big enough squirter in it to overcome this issue. Look at it this way when you jab the throttle fuel comes out the squirters at the top of the carb, how long do you think it takes that fuel to reach the cyls? It's not instant hence your hesitation, you need that manifold rich with fuel to have the necc. responce to throttle angle change. Joe

Adger Smith · 05-22-2009, 07:15 AM

I have had customers that had problems similar. It happens after the car/boat sits without much use. Check to see if the needles below the squirters are stuck. More common a problem with alky & race fuel than with pump gas.

voltdr · 05-19-2009, 04:58 PM

Bigger squirters, ( mine are .055 in my dragster) and make sure the engine is warmed up properly. It is a bigger issue also if the weather is cooler outside. The problem will show up more when it gets cool at night vs. the daytime, even at the same race.

05-20-2009, 04:59 PM	#1
Mark Schmidt Member Join Date: Sep 2007 Posts: 273 Likes: 0 Liked 0 Times in 0 Posts	Re: Need help finding my (grimlin) I'm assuming you run on the stop, that said I would suggest 3 things 1. Lose the power valve and re-jet accordingly 2. Larger squirters 3. Roll into the throttle (if for no other reason..consistency) Just my .02 cen ts...good luck! __________________ MDS Motorsports

05-21-2009, 08:52 AM	#2
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: Need help finding my (grimlin) Probably the biggest problem I've seen on alot of cars is guys seem to run the idle very lean, the manifold MUST be full of fuel vapors or you will certainly have a stumble on quick throttle application. I'm not sure you can put a big enough squirter in it to overcome this issue. Look at it this way when you jab the throttle fuel comes out the squirters at the top of the carb, how long do you think it takes that fuel to reach the cyls? It's not instant hence your hesitation, you need that manifold rich with fuel to have the necc. responce to throttle angle change. Joe __________________ Joe Buchanan SS/BX 3117

05-22-2009, 07:15 AM	#3
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Need help finding my (grimlin) I have had customers that had problems similar. It happens after the car/boat sits without much use. Check to see if the needles below the squirters are stuck. More common a problem with alky & race fuel than with pump gas. __________________ Adger Smith (Former SS)

05-19-2009, 04:58 PM	#4
voltdr Senior Member Join Date: Jan 2008 Location: Texas Posts: 705 Likes: 77 Liked 97 Times in 50 Posts	Re: Need help finding my (grimlin) Bigger squirters, ( mine are .055 in my dragster) and make sure the engine is warmed up properly. It is a bigger issue also if the weather is cooler outside. The problem will show up more when it gets cool at night vs. the daytime, even at the same race.