Search: Posts Made By: jmarksdragster
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12-09-2016, 04:09 PM
Replies: 1
Views: 3,658
Posted By jmarksdragster

What model number carb is it for?

What model number carb is it for?
12-09-2016, 04:05 PM
Replies: 15
Views: 10,066
Posted By jmarksdragster

Did they open the angle channels on those...

Did they open the angle channels on those metering blocks? They come with around a .136" exit, but need to be at least .160
Forum: Engine Tech
11-29-2015, 02:49 PM
Replies: 5
Views: 1,970
Posted By jmarksdragster

Think about the volume a pump will supply into a...

Think about the volume a pump will supply into a bucket, and the small hole the fuel has to pass thru the N&S. It's not the pump that can't supply enough fuel, it's the regulator you have to worry...
Forum: Engine Tech
11-23-2015, 02:29 PM
Replies: 5
Views: 1,970
Posted By jmarksdragster

I've run 4.90's in the 1/8 with E85 or methanol...

I've run 4.90's in the 1/8 with E85 or methanol with a Magnafuel Prostar 500. Biggest thing to worry about is the regulator, it is the most restrictive point to worry about. I use the magna fuel...
07-18-2015, 11:56 AM
Replies: 5
Views: 8,520
Posted By jmarksdragster

I've spun my 4.25 stroke 461 SBC to 7900...

I've spun my 4.25 stroke 461 SBC to 7900 regularly. Just depends on the parts you used.
Forum: Engine Tech
07-11-2014, 02:04 PM
07-08-2014, 11:08 AM
Replies: 9
Views: 3,687
Posted By jmarksdragster

It was dyno'ed at BLP on an 800 HP BBC, 540ci....

It was dyno'ed at BLP on an 800 HP BBC, 540ci. It's also been on the track in a 700 HP SBF. With methanol you need a lot of fuel through the boosters.
07-03-2014, 05:25 PM
Replies: 9
Views: 3,687
Posted By jmarksdragster

Keep going up. I'm at around .200 on my methanol...

Keep going up. I'm at around .200 on my methanol 1050's.
06-11-2014, 11:40 AM
Replies: 18
Views: 7,484
Posted By jmarksdragster

You might try a stainless check ball the same...

You might try a stainless check ball the same diameter as the check valve, and cut the same diameter as the ball off the length of the check valve. Put the check ball in first, put the old valve on...
03-25-2014, 09:47 AM
Replies: 4
Views: 2,179
Posted By jmarksdragster

Going from a 9.325 block to a 9.025 block will...

Going from a 9.325 block to a 9.025 block will require material be removed from the intake.
Forum: Engine Tech
03-14-2014, 09:26 AM
Replies: 8
Views: 9,875
Posted By jmarksdragster

R57671A-7 at .028-.030. For a projected nose plug...

R57671A-7 at .028-.030. For a projected nose plug like you are running use a C63YC Champion.
02-27-2014, 05:14 AM
Replies: 1
Views: 1,949
Posted By jmarksdragster

Mark I have a QFX 1450 body carb with a modified...

Mark I have a QFX 1450 body carb with a modified venturi that runs just fine with no intermediate fuel. That carb flows in the 1700 CFM range. 7.56 at 174. I have a 2.400 billet carb that flows over...
Forum: Engine Tech
02-26-2014, 06:47 PM
Replies: 8
Views: 9,875
Posted By jmarksdragster

I run 7's with gas or E85 up to 14.5 to 1, my...

I run 7's with gas or E85 up to 14.5 to 1, my 15.5 to 1 engine runs 8's.
02-02-2014, 06:35 PM
Replies: 1
Views: 3,126
Posted By jmarksdragster

Most of the time a correctly tuned 2 circuit...

Most of the time a correctly tuned 2 circuit Dominator works just fine for both bracket racing and throttle stop use. The only time it might be an issue is with an under carb stop with the throttle...
01-22-2014, 01:42 PM
Replies: 5
Views: 2,532
Posted By jmarksdragster

The link has a sheet you can log all the...

The link has a sheet you can log all the metering, this will give me a direction to help, and a log for you to go back to if needed. And if it needed bigger N&S, why didn't it come with them, and...
01-22-2014, 12:58 PM
Replies: 5
Views: 2,532
Posted By jmarksdragster

Sent a PM, bigger N&S? Did you get the guys...

Sent a PM, bigger N&S? Did you get the guys name?
Forum: Transmission
01-04-2014, 05:54 AM
Replies: 15
Views: 14,306
Posted By jmarksdragster

FTI here. No better customer service from any...

FTI here. No better customer service from any company.
01-01-2014, 07:13 PM
Replies: 1
Views: 1,368
Posted By jmarksdragster

Try a 5/16 center punch, or a brass drift to set...

Try a 5/16 center punch, or a brass drift to set the booster pin tighter.
Forum: Engine Tech
12-27-2013, 10:39 AM
Replies: 24
Views: 13,098
Posted By jmarksdragster

Except there is no dip when the carb is set up...

Except there is no dip when the carb is set up correctly. Idle, transition, and main metering can be tuned to provide a smooth transition without it. The only reason it was added originally was for...
Forum: Engine Tech
12-18-2013, 02:08 PM
Replies: 24
Views: 13,098
Posted By jmarksdragster

Actually the intermediate circuit was derived...

Actually the intermediate circuit was derived from metering blocks used in a Chrysler emission carb, the application was to use them on individual runner intakes where pulsing below the throttle bore...
Forum: Engine Tech
12-16-2013, 06:37 AM
Replies: 24
Views: 13,098
Posted By jmarksdragster

What carb are you currently running? If your...

What carb are you currently running? If your stuck on the Gen 3 look, go with the 80902 2 circuit 1050.
Forum: Engine Tech
12-08-2013, 01:25 PM
Replies: 24
Views: 13,098
Posted By jmarksdragster

Carbs are quite simple, and when they are...

Carbs are quite simple, and when they are calibrated and sized correctly they work as they were designed. It's when they are plundered by those that think they understand them that it becomes an...
Forum: Engine Tech
12-05-2013, 10:40 AM
Replies: 24
Views: 13,098
Posted By jmarksdragster

I've seen the other side, two different ones on a...

I've seen the other side, two different ones on a dirt track engine on an inertia dyno and it wasn't pretty. One local runs one, tells some it's great and tells others he can't get it right...
Forum: Engine Tech
12-05-2013, 06:43 AM
Replies: 24
Views: 13,098
Posted By jmarksdragster

A 2 circuit is what I suggest, and I have a few...

A 2 circuit is what I suggest, and I have a few out there running in the Super classes. They run well on the stop, yours makes about what my 23 degree 427 makes. Either the Quick Fuel or Holley will...
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