gerg 10,871 Posted March 14, 2014 wow a bittersweet end to all of your work... While I'm sure you're pretty chuffed at the result (and I would be) it's a bit disheartening to see your blood, sweat and tears go off with a bang just like that. And does this bloke have money to burn? If so, tell him to send it my way instead! 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted March 14, 2014 I was super excited when I heard it run, it sounded tougher than any of the other 6's there and torched the tyres with ease. Was gutted when he sent me pics of the head LOL. He works at the local wreckers so has plenty of parts to play with, plus I don't charge him much. I do it for the fun and to see how my work performs. I need to find a video to post. 4 gerg, rocklord, slydog and 1 other reacted to this Share this post Link to post Share on other sites
slydog 7,873 Posted March 14, 2014 Have you got Daniel to come over here yet bro? I like his ute...mmmmmmmmmmmmmmmmmmmmm super big tub's. 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Outback Jack 6,352 Posted March 14, 2014 Well, know where to go when I need me 4L tickled now..... nice work Clevo 120Y. Jack. 2 Clevo120Y and slydog reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted March 15, 2014 Slydog, Corky is buying a house at the moment so the ute is on hold for a little bit until he moves all his gear, the ute will be awesome, he is wanting to do the whole procharged mega power action and I'm sure he will head east when it's done. The 6's are just for fun, he just puts a bit more effort into his fun than most people LOL 1 slydog reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 8,863 Posted March 23, 2014 Is this head port job, anyone we know? http://performanceforums.com/forums/showthread.php?67289517-AU-ford-head-for-big-turbo-setup 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted March 24, 2014 Looks great and flows big numbers, really nice work there. Huge ports on it but being boosted it will be alright. The only thing I worry about with what he has written is that the pipemax flow rating required is with the manifold and throttlebody in place not just the head flow figure so I hope he still gets the flow he wants, the intake manifold I've realised is probably the biggest part of getting the numbers you want, the best head in the world can still be choked by a shit manifold. This bloke is obviously onto it and has probably sorted the manifold and everything else as well, Thanks for posting that up Dave PS The other guy on that thread PM308 is Pete over in Vic and is a great bloke, has given me plenty of advice and is one of the best around, much better than me hahahaha 1 nos2 reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 8,863 Posted April 1, 2014 My latest cyl head flow figures. This one started out as a brand new 91AA EB/ED cylinder head, and was supposedly ported (very lightly) to suit the cam specs as per below. It has - Crow 7339 90lb XR6 springs, Crow 11704 collets, Crow 12700 retainers. Pep Pro Stainless 1.615inch - 41mm inlet valves with 11/32 - 8.7mm stem Pep Pro Stainless 1.850inch - 47mm exhaust valves with 11/32 - 8.7mm stem It's going on my XG work panelvan which is a Dual Fuel 4spd auto, with 3.23 diff - ie, standard. I sure hope it turns out to be ok. To understand the flow sheet - The Range, is a specific sized orifice plate within the flow bench - ie, 100 = 100cfm orifice plate 200 = 200CFM plate, etc The Flow % is the amount of flow through that orifice plate, so 69% of 100 range, means it's flowing 69% of 100cfm which equals 69CFM. or 85% of 200 range = 85% of 200cfm = 170CFM and so on. Once the flow is approaching 100% through a certain sized plate, the operator steps up to the next size. Having the various sized orifice plates, allows for more accurate CFM measurements. 1. = before 2. = after porting 3. = after porting, and laying back the seat angle on the valves a bit more. 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 8,863 Posted April 1, 2014 So, in comparing the two OHC heads I've built - INTAKE - N. Standard P. Ported PB. Ported/Backcut Valves Aftermarket 91AA Factory N P N P PB Lift CFM 100: 69 - 71........ 56 - 54 - 58 200: 126 - 130........ 114 - 112 - 120 300: 178 - 190........ 170 - 174 - 176 350: 195 - 213........ 190 - 196 - 198 400: 201 - 222........ 204 - 213 - 213 450: 204 - 225........ 210 - 214 - 219 500: 198 - 228........ 213 - 222 - 225 550: 195 - 228........ 213 - 222 - 225 600: 195 - 228.... EXHAUST - N. Standard P. Ported Aftermarket 91AA Factory N P N P Lift CFM 100: 55 - 57........ 41 - 44 200: 90 - 95........ 74 - 77 300: 106 - 126........ 102 - 110 350: 108 - 144........ 112 - 120 400: 126 - 156........ 120 - 130 450: 130 - 166........ 126 - 136 500: 134 - 174........ 130 - 142 550: 136 - 176........ 130 - 148 600: 128 - 176........ Share this post Link to post Share on other sites
SPArKy_Dave 8,863 Posted April 1, 2014 On a side note, here's a nifty valve spring removal tool, for these heads - Read more about it here - http://www.boostedfalcon.net/viewtopic.php?f=3&t=7390&start=480&sid=2d6e2ea406b26b7b8dc5bb959a306da6 (note: you may have to sign up to Boosted, to view the thread) Share this post Link to post Share on other sites
Trev Vaa 1,185 Posted April 2, 2014 man that is some huge low lift figures on that head, both aftermarket and ported. who the hell is casting these heads? racer pro by any chance? lol also how much are they? fuck i can see me ending up with another ED at this rate.... lol 1 SPArKy_Dave reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 8,863 Posted April 2, 2014 man that is some huge low lift figures on that head, both aftermarket and ported. who the hell is casting these heads? racer pro by any chance? lol also how much are they? fuck i can see me ending up with another ED at this rate.... lol Cost me $500 - $600, for a brand new bare head - aftermarket, through the engine builder I use. (a mate of my uncles) The NOS 91AA Head, was about $300 off ebay, still in the Ford box, and came with new standard valves, and sec/hand springs,retainers,collets - all of which I discarded. 3 Outback Jack, Clevo120Y and nos2 reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted May 12, 2014 I flow tested a BBM and a Log manifold on the same head today which was a EF 94ab head, the Log manifold outflowed the BBM by 11cfm. Just thought you guys would be interested in that. 5 gerg, SPArKy_Dave, nos2 and 2 others reacted to this Share this post Link to post Share on other sites
Campo 869 Posted May 12, 2014 I flow tested a BBM and a Log manifold on the same head today which was a EF 94ab head, the Log manifold outflowed the BBM by 11cfm. Just thought you guys would be interested in that. That is interesting. I changed from log manifold to bbm on my speedway engine and gained about 10kw and a shitload of torque, odd. Share this post Link to post Share on other sites
PRO250 1,506 Posted May 12, 2014 thats why dan still runs one i still have one and greny went back to oneboth of them had gone the bbm i learned from them but my engine made shit numbers funny so did dans but it backs the shit numbers with a epic time slip for the power level Share this post Link to post Share on other sites
gerg 10,871 Posted May 12, 2014 I'm guessing the BBM having the longer inlet runners could possibly have a pulse-tuning effect that the log manifold lacks, the extent of which cannot be measured on a flow bench. Also the throttle lives smack in the centre of the plenum, vs right at the front on the log. Better air distribution me thinks Share this post Link to post Share on other sites
Clevo120Y 815 Posted May 12, 2014 Yeah I'm going to do more testing at a later date, both tests were done on port number 4 which for the BBM is right in front of the throttlebody, I will see if the BBM is even flow wise across all the cylinders as I will with the log manifold. Will keep you posted when I get to it. 3 gerg, Outback Jack and Jonathan Mark Davidson reacted to this Share this post Link to post Share on other sites
nos2 751 Posted May 13, 2014 I flow tested a BBM and a Log manifold on the same head today which was a EF 94ab head, the Log manifold outflowed the BBM by 11cfm. Just thought you guys would be interested in that. Even when both are ported the log out flows the bbm. The main reason I'm switching from bbm to log. Hey clevo120y, what were the figures on the stock manifolds? Share this post Link to post Share on other sites
dizzy616 183 Posted May 13, 2014 i love the log manifold. apart from its a bastard to work around. and not that i have tried a bbm on my engine yet. 1 Outback Jack reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted May 13, 2014 The EF head flows 217cfm, the log flows 197cfm the BBM flowed 186cfm. All tested at 28in. 2 Outback Jack and nos2 reacted to this Share this post Link to post Share on other sites
Valvebouncer 2,389 Posted June 22, 2017 I just re-read this thread, so much good info here. One thing i want to know, i have an AU XR6 non vct engine to eventually put in my ute. What is the difference in the head between it and a standard AU head other than a big T cast in the front? Are the valves springs and cam any different from the standard motor? Share this post Link to post Share on other sites
Thom 6,650 Posted June 22, 2017 Yes as well as bigger exhaust valves and a higher fuel pressure regulator 1 Valvebouncer reacted to this Share this post Link to post Share on other sites
Outback Jack 6,352 Posted June 22, 2017 Thom da man.... great thread. Different valve guides on xr6 also but ya got the rest.Sent from my GT-S7583T Share this post Link to post Share on other sites
Valvebouncer 2,389 Posted June 22, 2017 Yes as well as bigger exhaust valves and a higher fuel pressure regulator Ok cool, so a standard AU head has the same size exhaust valves as an EF XR6 head and an AU XR6 head has even bigger exhaust valves again. Correct? Share this post Link to post Share on other sites
