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Author Topic: dialing in the stroker ?  (Read 19565 times)

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bartlett

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Re: dialing in the stroker ?
« Reply #30 on: July 22, 2013, 10:55:22 PM »
shes running pretty cool now ! ( happy)

I switched to a 50cc pump and my hesitation is still there right off idle and now it's rich lazy through the squirt length.   It still spikes lean right off idle and if I just goose it from a cruise speed. It does not cough or stall out ect just lean spikes and catches and goes ..  I have opened the secondaries some to keep my idle up and primary plates proper.  Do I need to up the squirter size and drop the pump cam back down to a 30cc cam?   The air fuel was perfect before with the stock pump cam butt I had the hesitation.   This motor has been tricky to dial in .... Help !
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My427stang

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Re: dialing in the stroker ?
« Reply #31 on: July 23, 2013, 06:31:23 AM »
I'd try a .031 squirter and a blue pump cam with the 30cc pump.  I can't imagine that you need all that pump volume

If you look below, you will see the blue cam in #1 is pretty aggressive, it tends to work well without flooding.  The solid blue line comes in quicker and with a little more

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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

bartlett

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Re: dialing in the stroker ?
« Reply #32 on: July 23, 2013, 06:48:24 PM »
ok Ill give it a try .... From what I'm told the 50cc kit will act like a 30cc kit with a 30cc cam installed ... Im going to order a few squirters today...
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My427stang

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Re: dialing in the stroker ?
« Reply #33 on: July 23, 2013, 07:35:11 PM »
I am not sure what that means, 30 cc cam...

Every one of those curves in my last post are cams for a 30 cc pump and you can see they are all different

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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

bartlett

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Re: dialing in the stroker ?
« Reply #34 on: July 23, 2013, 09:35:18 PM »
they make some cams for the 50cc pump and a bunch for the 30cc pump if you put a blue/30cc cam it should pump the same shot no matter what cc size is.
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My427stang

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Re: dialing in the stroker ?
« Reply #35 on: July 24, 2013, 06:09:49 AM »
I don't know that's true, although I don't know it's false either. I have seen on the net that guys sometimes use a 50cc pump with the small cam, but I am not sure it is the same output as a 30cc pump.  Although the sweep and rise would be determined by the cam, seems to me the dimensions of the 50cc pump might do something different. 

Regardless, I have done a ton of Holley work, and I don't use those 50cc pumps.  I honestly have never found a need for one.  The only time I can imagine that I wouldn't be able to tune it with cam and squirter would be for an alky carb when it needed much more volume or if there is a significant issue in the transition and main circuits.
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

machoneman

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Re: dialing in the stroker ?
« Reply #36 on: July 24, 2013, 06:34:38 AM »
2X on never having to use a 50cc pump on a streeter or say an under 500hp engine.  Usually fellows who would bring me their cars after adding a 50cc pump realized that something else in the carb was off and the new pump merely masked the real problem. 
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Bob Maag

bartlett

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Re: dialing in the stroker ?
« Reply #37 on: July 27, 2013, 08:04:30 AM »
switched just the squirter to a 31 and the car runs real good just a tad lazy/rich during the pump. ran the car a good 30 miles last night and it just ran good. This morning I switched back to the 30cc pump and installed a blue cam in the #1 slot. and readjusted the pump arm.  I'm doing a 2hr drive to sleepy eye for a family gathering and will see how she runs.. just free reving it,it seems to be leaner and crisper so far ... Im happy that Im getting close on the setup. It's fun when they run good.

p.s. ... she runs 190 90% of the time now !  motors happy Im happy.. ;D
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bartlett

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Re: dialing in the stroker ?
« Reply #38 on: July 28, 2013, 08:00:14 AM »
drove 140 miles to sleepy eye and it ran  GREAT !   12mpg 3,000rpm 60mph  70oil psi   Its perfect now and time to enjoy it !

thanks everyone for all the help !  ;D
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My427stang

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Re: dialing in the stroker ?
« Reply #39 on: July 28, 2013, 08:29:15 AM »
Glad to hear it worked out!
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

jayb

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Re: dialing in the stroker ?
« Reply #40 on: July 28, 2013, 03:48:18 PM »
Quote from: bartlett on July 28, 2013, 08:00:14 AM
drove 140 miles to sleepy eye and it ran  GREAT !   12mpg 3,000rpm 60mph  70oil psi   Its perfect now and time to enjoy it !

thanks everyone for all the help !  ;D

Attaboy!  How's your water temp on the freeway?
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Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

bartlett

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Re: dialing in the stroker ?
« Reply #41 on: July 28, 2013, 10:19:27 PM »
280 MILES ! FANTASTIC ! Ran perfect !


 Jay the temp just hovered around the 190 mark all day ... most it saw sitting was 200...

Here she is in sleepy eye mn at the farm ....

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bartlett

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Re: dialing in the stroker ?
« Reply #42 on: August 03, 2013, 08:54:02 AM »
So got alittle  crazy last night and she runs pretty good ! 1,2,3 across the light lol ....

http://www.youtube.com/watch?v=Vw6HH37vtsU
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Qikbbstang

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Contrairian point of view to Jay's "I like to use 160 degree thermostats"
« Reply #43 on: August 03, 2013, 10:50:13 AM »
I got a friend that built a Boss 302 clone with a NASCAR real deal Yates headed/Ford racing block and for good measure stroked and roller cam'd it. Started out with a Griffin radiater, dual killer Spal elec fans/shrouds etc. it would over heat. Upgraded to the largest Griffin he could have made. went with flex fan and eventually went to a FoMoCo Boss 302 fan and after talking to Griffin about it still over heating he finally swapped out the low temp thermo and went with a hot thermostat and THAT finally cured his over heating. Supposedly the low temp thermo defies logic and lets flow pass to fast or something. I know it's Voodoo/defies logic but it worked 
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