MK-I MK-II MK-III MK-IV GULF MIRAGE J-CAR LOLA
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Why not start with your first post today and become an active part of GT40s.com now! And, if you find you enjoy GT40s.com think about becoming a Forum Supporter. | | GT40 Tech - Engines/Induction/Exhaust Motors and engine related - right here! | 
04-30-04, 06:14 PM
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#1 (permalink)
| | Rookie 
Join Date: Jan 2004
Posts: 57
Rep Power: 5  | Holley vs 48 IDA\'s back to back dyno result!!!
Holley Weber
Tq HP Tq HP
4000 338 257 382 291
4400 371 311 400 335
4800 398 364 449 411
5200 411 407 441 436
5600 413 440 438 467
6000 412 470 434 496
6400 400 488 422 515
6800 401 519 399 517
7000 390 534 386 514
331 CU SB ford,victor Jr head ported and topped with Victor JR manifold and IDA's manifold,pump gas (11.0 cr)dynoed in Knigth racig services on in house Superflow!!! | 
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04-30-04, 07:11 PM
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#2 (permalink)
| | kmcgowen 2 Tenths 
Join Date: Nov 2003
Posts: 246
Rep Power: 7 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Very interesting info 289.
What size chokes were the Webers fitted with, and how much time was spent on the dyno fine tuning each carb setup? Also, do you know the specs of the cam that was used?
Kevin | |
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04-30-04, 08:35 PM
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#3 (permalink)
| | Lukas Rookie 
Join Date: Aug 2003 Location: Vienna, Austria GT40: None yet...
Posts: 84
Rep Power: 6 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
514 horses out of a 331??? Wow, very very impressive numbers! | |
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04-30-04, 10:44 PM
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#4 (permalink)
| | Faili F 6 Tenths 
Join Date: Aug 2002 Location: Axis Of Evil GT40: A Fake one
Posts: 699
Rep Power: 14 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
289,
Is this a chassis (Dynajet, Dynamics) Dyno or flywheel Dyno, What kind of a car? | |
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04-30-04, 11:33 PM
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#5 (permalink)
| | BenL 6 Tenths
Join Date: Apr 2004 Location: USA
Posts: 680
Rep Power: 11 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
For folks like me who prefer pictures to numbers, here's the numbers as a graph.  | |
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05-01-04, 02:31 AM
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#6 (permalink)
| | Rookie
Join Date: Jan 2004
Posts: 57
Rep Power: 5 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Try first 42 and after 44 and back to 42,14 hours on dyno (flywheel dyno,this engine will be fitted on ac cobra
Cam specs:flat tappet 592/.544,262/264 @.50,11.0 CR with unleaded pump gas! | |
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05-01-04, 07:17 AM
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#7 (permalink)
| | CCX33911 10 tenths
Join Date: Dec 2001 GT40: Virginia
Posts: 1,222
Rep Power: 19 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Very nice results! Are those US or UK HP figures?? [img]/ubbthreads/images/graemlins/grin.gif[/img] | |
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05-01-04, 08:54 AM
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#8 (permalink)
| | kmcgowen 2 Tenths
Join Date: Nov 2003
Posts: 246
Rep Power: 7 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Ron,
Looks like you are going to get some good material for that Dyno section.
Kevin | |
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05-01-04, 09:56 AM
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#9 (permalink)
| | Rookie
Join Date: Jan 2004
Posts: 57
Rep Power: 5 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
About dyno is a superflow US brand,figures are the same (UK vs US)
Bernie | |
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05-01-04, 03:20 PM
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#10 (permalink)
| | Faili F 6 Tenths
Join Date: Aug 2002 Location: Axis Of Evil GT40: A Fake one
Posts: 699
Rep Power: 14 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Bernie,It would be FANTASTIC (for all members) if you post Rear wheel HP results once you have installed this motor in a vehicle.
Kevin, I think Ron was talking about a section for rear wheel HPs. | |
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05-01-04, 03:45 PM
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#11 (permalink)
| | Ron Earp Site Administrator
Join Date: Sep 2001
Posts: 3,933
Rep Power: 57  | Re: Holley vs 48 IDA\'s back to back dyno result!!!
We'll accept anything in the dyno section, provided they are dyno results. I strongly prefer rear wheel numbers because so often the 500hp stoker turns into the 325 rwhp stroker. Mine stoker will probably do the same. Makes me even happier with my tiny 2.2L Lotus!!
R | |
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05-01-04, 05:36 PM
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#12 (permalink)
| | christian.39 A Tenth
Join Date: Oct 2002
Posts: 197
Rep Power: 8 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
289, any chance you could tell us the runner length of the IDA's? That would be the length from the head flange to the bellmouthed webber inlet.
I'll bet dollars to doughnuts that the runner length for the webbers was longer than the primaries of the victor jr. | |
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05-01-04, 05:49 PM
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#13 (permalink)
| | Rookie
Join Date: Jan 2004
Posts: 57
Rep Power: 5 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
lenght are 13.180 from top of the stack (2.5")and 17.830 to center of the valve
Bernie | |
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05-02-04, 08:57 AM
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#14 (permalink)
| | christian.39 A Tenth
Join Date: Oct 2002
Posts: 197
Rep Power: 8 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
Thanks Bernie,
I think the Victor Jr. is more like 12-16" (the length varies quite a bit from runner to runner) from the plenum to the valve, so this probably explains most of torque difference. | |
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06-27-04, 08:38 PM
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#15 (permalink)
| | Ron Earp Site Administrator
Join Date: Sep 2001
Posts: 3,933
Rep Power: 57 | Re: Holley vs 48 IDA\'s back to back dyno result!!!
ttt | |
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