Head + Intake Flow bench #s / flow loss with intake - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech Head + Intake Flow bench #s / flow loss with intake

Print Thread

Head + Intake Flow bench #s / flow loss with intake #1280350 08/06/12 11:59 AM 08/06/12 11:59 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	FWIW, more misc. tech stuff... I've done some flow testing of my CNC Victors w/ my "Franken-intake" modified MP M1 RB and wanted to compare them to what I saw doing the same type of tests w/ my old Stage VIs w/ an earlier version of the same intake manifold. Stage VIs + M1 Intake v1 Lift -- #1 -- #3 -- #6 -- #8 .600" - 288 - 282 - 280 - 288 (Avg 285) .650" - 292 - 284 - 283 - 292 (Avg 289) Victors + M1 Intake v2 Lift -- #1 -- #3 -- #6 -- #8 .600" - 312 - 312 - 308 - 312 (Avg 311) .650" - 317 - 317 - 313 - 320 (Avg 317) Keep in mind the Stage VIs were used w/ a .600" (gross) lift solid flat-tappet cam, but the Victors are going to be using a .650" (gross) solid roller. The head-only flow #s for the Stage VIs maxed about 310, whereas the Victors are closer to 350. I noticed the additional work I did to the intake is still lagging behind the flow increase w/ the new heads, since the average flow loss w/ the intake on the Stage VIs was ~ 6% vs. an average loss on the Victors of ~ 9%. Anyone have other examples of flow loss % when intakes are installed vs. the heads by themselves?

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280351 08/06/12 12:29 PM 08/06/12 12:29 PM
Joined: Feb 2003 Posts: 1,646 Ontario,Canada F firefighter3931 top fuel
firefighter3931 top fuel F Joined: Feb 2003 Posts: 1,646 Ontario,Canada	Quote: FWIW, more misc. tech stuff... I've done some flow testing of my CNC Victors w/ my "Franken-intake" modified MP M1 RB and wanted to compare them to what I saw doing the same type of tests w/ my old Stage VIs w/ an earlier version of the same intake manifold. Stage VIs + M1 Intake v1 Lift -- #1 -- #3 -- #6 -- #8 .600" - 288 - 282 - 280 - 288 (Avg 285) .650" - 292 - 284 - 283 - 292 (Avg 289) Victors + M1 Intake v2 Lift -- #1 -- #3 -- #6 -- #8 .600" - 312 - 312 - 308 - 312 (Avg 311) .650" - 317 - 317 - 313 - 320 (Avg 317) Keep in mind the Stage VIs were used w/ a .600" (gross) lift solid flat-tappet cam, but the Victors are going to be using a .650" (gross) solid roller. The head-only flow #s for the Stage VIs maxed about 310, whereas the Victors are closer to 350. I noticed the additional work I did to the intake is still lagging behind the flow increase w/ the new heads, since the average flow loss w/ the intake on the Stage VIs was ~ 6% vs. an average loss on the Victors of ~ 9%. Anyone have other examples of flow loss % when intakes are installed vs. the heads by themselves? Andy did some manifold testing using a set of 350cfm Indy EZ's and various manifolds bolted up. http://www.moparmusclemagazine.com/techarticles/mopp_0701_mopar_intake_manifold/edelbrock.html Your std port modded M1 looks pretty good in comparison to the results posted in the link above Ron

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280352 08/06/12 12:34 PM 08/06/12 12:34 PM
Joined: Oct 2004 Posts: 5,620 long island NY A Ari440 master
Ari440 master A Joined: Oct 2004 Posts: 5,620 long island NY	my "Franken-intake" modified MP M1 RB any pics ? 1.39 9.85 - 137 mph

Re: Head + Intake Flow bench #s / flow loss with intake [Re: Ari440] #1280353 08/06/12 02:41 PM 08/06/12 02:41 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	I recalled that Andy had some tests, but hadn't bothered to go dig 'em up. I can tell the MW-type intakes aren't losing as much overall flow as my M1, but it seems to be showing pretty well for what's still a small-port intake in comparison. Sorry, no recent pictures of "final" version of Franken-intake. We've got some home 'puter issues and I can't download pics from the digi-cam to the machine I'm posting from.

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280354 08/06/12 03:03 PM 08/06/12 03:03 PM
Joined: Jan 2003 Posts: 31,203 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,203 Oregon	I redid my website so you don't have to go far to dig up stuff anymore. www.arengineering.com then click on tech articles. The intake flow bench work is on there. One thing I've observed is that an intake with bad flow numbers will not make power. But an intake with good flow numbers will not necessarily make lots of power.

Re: Head + Intake Flow bench #s / flow loss with intake [Re: AndyF] #1280355 08/06/12 04:10 PM 08/06/12 04:10 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Quote: I redid my website so you don't have to go far to dig up stuff anymore. www.arengineering.com then click on tech articles. The intake flow bench work is on there. One thing I've observed is that an intake with bad flow numbers will not make power. But an intake with good flow numbers will not necessarily make lots of power. nice website. Brad, maybe the 337 intake would be much better than what you have. I wish I still had mine to send it to you to try but its a cheap intake to pick up and we all know you got the Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: Head + Intake Flow bench #s / flow loss with intake [Re: sixpackgut] #1280356 08/07/12 10:57 AM 08/07/12 10:57 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH OP Taking time off to work on my car
BradH OP Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	I have a Victor 440 (4150), but haven't taken the time to do any work on it to match the heads. It's also so tall that it doesn't leave any room under the scoop for any spacers. The 337 seems more suited to bigger engines + MW-sized heads.

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280357 08/07/12 12:57 PM 08/07/12 12:57 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Quote: I have a Victor 440 (4150), but haven't taken the time to do any work on it to match the heads. It's also so tall that it doesn't leave any room under the scoop for any spacers. The 337 seems more suited to bigger engines + MW-sized heads. the 337 port is on the small size where it meets the head. and I thought you have slightly over sized ports on the heads you have. may be worth a look. If you compare the plenum and port entry of the 337 to the victor, the 337 IMO looks better although, like you said it might be more suited for more cubes but your motor is no slouch for a small block can you tell I really like the 337 intake? I tried a victor intake on my 493 when I was running standard ports with a couple different carbs and was not happy with the results. only slightly faster than stock six pack intake and way slower than weiand cross ram and weiand tunnel ram six pack. Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: Head + Intake Flow bench #s / flow loss with intake [Re: sixpackgut] #1280358 08/07/12 01:13 PM 08/07/12 01:13 PM
Joined: Oct 2004 Posts: 5,620 long island NY A Ari440 master
Ari440 master A Joined: Oct 2004 Posts: 5,620 long island NY	weiand cross ram and weiand tunnel ram six pack. which one was faster 1.39 9.85 - 137 mph

Re: Head + Intake Flow bench #s / flow loss with intake [Re: Ari440] #1280359 08/07/12 01:49 PM 08/07/12 01:49 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Quote: weiand cross ram and weiand tunnel ram six pack. which one was faster they ran about the same. the tunnel ram worked better though. no weird fuel puddling and on the crossram you need to use the side hung float bowls which i hate Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280360 08/08/12 03:39 AM 08/08/12 03:39 AM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	I had an edelbrock perf rpm head with a 2.250 intake valve, max wedge port flowing 346 cfm at something like .700" lift. It would fall off after .720" if I remember correctly. Anyway, adding an indy single plane for a low deck, that was already MW port, but as cast, dropped the flow to a peak of about 317-320 if I remember correctly. I remember being a bit upset and thinking I had a lot of work to do on that manifold. Never did get to do anything with it as the place I worked at couldn't afford to build an engine that hadn't already been paid for...

Re: Head + Intake Flow bench #s / flow loss with intake [Re: BradH] #1280361 08/08/12 05:20 PM 08/08/12 05:20 PM
Joined: Jul 2012 Posts: 430 Washington skrews mopar
skrews mopar Joined: Jul 2012 Posts: 430 Washington	flowed some BB Chevy Dart heads a few year back right around 400 cfm alone , with cast Dart intake lost about 35 cfm , with fab. sheet metal intake lost only a few cfm , total eye opener for the merit of a well built fab. intake

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1