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Search found 3811 matches

by jmarkaudio
Sun Aug 02, 2020 11:53 am
Forum: Engine Tech
Topic: Holley 750 Dominator Booster Change Over
Replies: 15
Views: 764

Re: Holley 750 Dominator Booster Change Over

The 1050 8896-2 test did not work out today. I think it's just too fat and my new parts for the 750 conversion don't show up until Monday. I think using a good 2 circuit with the right parts in it will be better than this 8896. Taking out the intermediate bleeds did help a lot though. I was an ASE ...
by jmarkaudio
Sat Aug 01, 2020 11:00 am
Forum: Engine Tech
Topic: Holley 750 Dominator Booster Change Over
Replies: 15
Views: 764

Re: Holley 750 Dominator Booster Change Over

Yes, even being a two circuit they respond to the same things. There are baselines in that post that give you some starting points. Just understand I've probably reworked over 100 HP Dominators, they all can respond differently. You can build two seemingly identical bodies and have to tune each diff...
by jmarkaudio
Tue Jul 28, 2020 10:34 am
Forum: Engine Tech
Topic: Holley 750 Dominator Booster Change Over
Replies: 15
Views: 764

Re: Holley 750 Dominator Booster Change Over

If you want to make it run well look over the following link. It needs t-slot restrictions, lowered idle feeds, and opened up angle channels to be ideal.


http://www.motorsportsvillage.com/forum ... f=6&t=3742
by jmarkaudio
Fri Jul 17, 2020 2:11 pm
Forum: Engine Tech
Topic: The Decker Machine carb???
Replies: 38
Views: 2044

Re: The Decker Machine carb???

Image
by jmarkaudio
Sat Jul 04, 2020 10:45 am
Forum: Engine Tech
Topic: EPA proves Drag Chevette WRONG
Replies: 31
Views: 6002

Re: EPA proves Drag Chevette WRONG

Back from the dead!!!!!!!!!!!!!!! Anybody REALLY know the top CR limit is for pump E85? I have read like 17.5 to 1 or so in Turbo race engine configurations. I do figure that at say, 13.5 to 14 to 1 CR, it would power great high compressioned street engines as long as I could get it locally here in...
by jmarkaudio
Tue Jun 02, 2020 9:54 pm
Forum: Engine Tech
Topic: Dominator - can't even get it to idle
Replies: 92
Views: 3525

Re: Dominator - can't even get it to idle

Where are you located?
by jmarkaudio
Sun May 31, 2020 10:51 pm
Forum: Engine Tech
Topic: Dominator - can't even get it to idle
Replies: 92
Views: 3525

Re: Dominator - can't even get it to idle

Something newer Holley is doing, it's not listed in the spec chart I have. 45 is small for an idle bleed, but depends in the idle feed restriction size. I have built a lot of QFX bodies until Holley quit selling bulk parts to smaller shops, with the idle feed moved to the bottom (require threading t...
by jmarkaudio
Sun May 31, 2020 10:27 pm
Forum: Engine Tech
Topic: Dominator - can't even get it to idle
Replies: 92
Views: 3525

Re: Dominator - can't even get it to idle

OK Freddie, some good and not so good info here. Are the metering blocks blue? You may have a methanol carb, the only QF 1150 that is 2 circuit is a methanol carb.
by jmarkaudio
Fri May 22, 2020 6:28 pm
Forum: Engine Tech
Topic: SBC Tunnel Ram
Replies: 31
Views: 2028

Re: SBC Tunnel Ram

For 2 carbs with E85 have them built with annular boosters, atomization will be better so a little less heat is needed.
by jmarkaudio
Wed Apr 22, 2020 10:29 am
Forum: Engine Tech
Topic: 2 vs 3 circuit metering for an auto trans road course car?
Replies: 23
Views: 857

Re: 2 vs 3 circuit metering for an auto trans road course car?

I've built up to a 2.600 blade spread base carb with 2 circuits active, adding any intermediate fuel on the dyno only hurt it. Over 1500 HP... There are a few exceptions where having the third circuit may come into play. Methanol for one, because of the sheer volume of fuel required, even then it do...
by jmarkaudio
Sat Apr 18, 2020 2:05 pm
Forum: Engine Tech
Topic: Has racing been completely shut down?
Replies: 102
Views: 5025

Re: Has racing been completely shut down?

Tracks here are only open for private testing. I want to go back to work. I'll take my chances with the China Flu, and may have already had it at the beginning of the year. Flu symptoms, test negative. Wife was around me and never got it. The economy is going to take a bit to recover, and we MUST s...
by jmarkaudio
Fri Apr 17, 2020 7:57 pm
Forum: Engine Tech
Topic: Has racing been completely shut down?
Replies: 102
Views: 5025

Re: Has racing been completely shut down?

Tracks here are only open for private testing. I want to go back to work. I'll take my chances with the China Flu, and may have already had it at the beginning of the year. Flu symptoms, test negative. Wife was around me and never got it. The economy is going to take a bit to recover, and we MUST st...
by jmarkaudio
Tue Mar 31, 2020 10:57 pm
Forum: Engine Tech
Topic: Carb Jet Flow Info
Replies: 3
Views: 538

Re: Carb Jet Flow Info

I think there is a flow chart in the BLP paper catalog, I'll have to look in the morning.
by jmarkaudio
Tue Mar 31, 2020 10:53 pm
Forum: Engine Tech
Topic: Race gas price
Replies: 15
Views: 1230

Re: Race gas price

3.84 for AV-Gas a week or so ago.
by jmarkaudio
Tue Feb 25, 2020 9:40 pm
Forum: Engine Tech
Topic: Ir intake manifolds and carbs
Replies: 43
Views: 2569

Re: Ir intake manifolds and carbs

Does anyone have actual, on track, Lambda data logged for a big bore, carbed race car? Can it be shared? Chris Uratchko probably does on some I've reworked or built for him. I may have logged some on mine, I've run up to a 2.800 on my 461" SB2.2, I know I have logs up to 2.400. These are drag cars,...