I found an even easier way to stabilize my aluminum heads, just keep the power to a minimum........ works great for meeee

I almost pulled the trigger on the Voodoo 250/255 .636/.663 112lsa endurance grind.. $335 on a billet core, can`t beat that. I decided it wasn`t worth it over my 651 (244/256 .632)

Some nice results on the dyno sym thou

I think maybe this has been posted before in another thread (?)......found it interesting though what he says at the 4:08 mark. Sounds familiar.


http://www.youtube.com/watch?v=X-7lgXGani4

Yeah we buy most of our heads bare and they are setup for the application. After a season of abuse things move around as I stated in previous posts.

That's just life in the big city! Actually very informative, for me at least.

I love my new Engine Quest Iron heads. After replacing my old aluminum darts with them, my engines did not go into a detonation frenzy due to chamber temperatures, my boat didnt do a back flip from the extra 150 lbs on the stern. Nobody has walked past the dock and laughed at me for no longer having "aluminum" heads, as if I am less of a high performance boater with iron castings.

I do not plan to "compensate" for my iron heads, by reducing boost levels, changing octane levels, timing , cam parameters, or any of that due to my heads being cast iron instead of cast aluminum.

As soon as I heard his voice I knew who it was. He has a lot of videos loaded with good info the average joe wouldn't have a clue. Also does a good job covering all the different heads we use, good, bad indifferent. Amazing how many assembled heads purchased ready to be so called bolt on ready are scary. I'd never think about buying heads complete from even the top 3 companies without having gone through them.

Best reason for aluminum is being able to repair, besides that flow, and all the rest is the same... Oh and when you break your chit all the time like me it's easier to lift tnem in the boat!!! Hahah

My motors are 9.5:1 iron heads 170-180 block temps run on 89 octane. The only advantage I see with aluminum is if you own a Fountain. Too much weight in the stern and it may sink.

I remember i posted one of his videos , that one in particular i believe, in regards to "out of the box heads". I immediately got a phone call from Bob M. I got filled in about how that guy is a complete moron. I then recieved an earful about how great afr's heads are, their manufacturing techniques, and how they are superior to brands like dart, and brodix.

I still stand behind , getting cylinder heads bare, and going thru them. The simple mistake of recieving a set of afr heads as full force tim did, ready to bolt on for a mild hyd roller engine, only to accidently stumble on the fact, they had solid roller springs with over 750lbs or whatever open pressure. We can talk about fancy valve seat cutters, or whatever equipment used, but at the end of the day, something as simple as installing the proper spring, was overlooked.