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Racing Fuel Systems Forum for carb guys. 2021-11-08T10:22:51+01:00 https://racingfuelsystems.com/feed.php?f=5&t=216 2021-11-08T10:22:51+01:00 2021-11-08T10:22:51+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1266#p1266 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by rgalajda — Mon Nov 08, 2021 10:22 am

]]> 2021-11-06T20:26:27+01:00 2021-11-06T20:26:27+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1265#p1265 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]>
lot easier to control a low simmer of emulsion, then trying to control a raging boil over of vaporization out of the boosters.

Statistics: Posted by JETFAST — Sat Nov 06, 2021 8:26 pm

]]> 2021-11-04T14:05:01+01:00 2021-11-04T14:05:01+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1256#p1256 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]>
I had a long break due to other house related projects. I'm going to try to make some test and tune events this month. I did try some TSRs experiments before the break, which were encouraging.

I have done some Launch and WOT testing with the 4781 and the HP1000, as I'm going to try to make some test and tune events this month before season end. I'm going to post about jetting and PVRC needs for primary PV vs no PVs and square jetting.

Thanks.

Statistics: Posted by dave brode — Thu Nov 04, 2021 2:05 pm

]]> 2021-09-21T12:17:18+01:00 2021-09-21T12:17:18+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1163#p1163 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Idle circuit and main circuit not overlapping.

Right hand drive wrote
"What was the issue with the factory Holley settings?

Helps to gauge the changes you have made up to now"

Agree. Otherwise just stabs in the dark

Statistics: Posted by rgalajda — Tue Sep 21, 2021 12:17 pm

]]> 2021-09-20T01:46:48+01:00 2021-09-20T01:46:48+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1158#p1158 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]>
Note: In the first post on the switch to the 4781, I wrote that it has .025"/.070" air bleeds. That is wrong, it has stock press in bleeds, .025" MABs, .067" PIABs,.0595" SIABs.

Today, I tried .033" PIFR [sec side is closed off, has .035"]. With the .033" IFRs, it really likes 2 turns out, rich spot slightly better. At 1.75 turns out, idle is "ok", rich spot IS still better than .035" IFRs. Less than 1.75 and it drops rpm, doesn't like it.

I will eventually drill/tap the bleeds for set screws, but first I will try .031" IFRs. If that doesn't improve it, I'll go back to .035" IFRs with idle mix screws at best idle, and see how T-Slot restrictors in the front effect it.

Assuming that I'll still be seeking improvement after that round, I'll pull the carb and drill/tap the air bleed for set screws and experiment on IFR/IABs combos as per your advice.

Thank you.
Dave

Statistics: Posted by dave brode — Mon Sep 20, 2021 1:46 am

]]> 2021-09-19T05:56:03+01:00 2021-09-19T05:56:03+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1155#p1155 <![CDATA[Re: Annular 80514 HP1000, also 4781? Whew!]]> Statistics: Posted by Right hand drive — Sun Sep 19, 2021 5:56 am

]]> 2021-09-19T02:51:23+01:00 2021-09-19T02:51:23+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1154#p1154 <![CDATA[Re: Annular 80514 HP1000, also 4781? Whew!]]> Statistics: Posted by dave brode — Sun Sep 19, 2021 2:51 am

]]> 2021-08-23T03:44:09+01:00 2021-08-23T03:44:09+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1031#p1031 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by FC-Pilot — Mon Aug 23, 2021 3:44 am

]]> 2021-08-23T01:13:03+01:00 2021-08-23T01:13:03+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1029#p1029 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by Right hand drive — Mon Aug 23, 2021 1:13 am

]]> 2021-08-22T23:34:34+01:00 2021-08-22T23:34:34+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1027#p1027 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by FC-Pilot — Sun Aug 22, 2021 11:34 pm

]]> 2021-08-22T04:48:43+01:00 2021-08-22T04:48:43+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1017#p1017 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by Right hand drive — Sun Aug 22, 2021 4:48 am

]]> 2021-08-22T03:04:18+01:00 2021-08-22T03:04:18+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1015#p1015 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by BradH — Sun Aug 22, 2021 3:04 am

]]> 2021-08-21T08:47:33+01:00 2021-08-21T08:47:33+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1009#p1009 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by Right hand drive — Sat Aug 21, 2021 8:47 am

]]> 2021-08-21T02:31:35+01:00 2021-08-21T02:31:35+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1008#p1008 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by dave brode — Sat Aug 21, 2021 2:31 am

]]> 2021-08-20T12:45:18+01:00 2021-08-20T12:45:18+01:00 https://racingfuelsystems.com/viewtopic.php?t=216&p=1007#p1007 <![CDATA[Re: Annular 80514 HP1000, I'm close, which way to go?]]> Statistics: Posted by Right hand drive — Fri Aug 20, 2021 12:45 pm

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